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  • Oracle SQL Developer v3.2.1 Now Available

    - by thatjeffsmith
    Oracle SQL Developer version 3.2.1 is now available. I recommend that everyone now upgrade to this release. It features more than 200 bug fixes, tweaks, and polish applied to the 3.2 edition. The high profile bug fixes submitted by customers and users on our forums are listed in all their glory for your review. I want to highlight a few of the changes though, as I recognize many of you lack the time and/or patience to ‘read the docs.’ That would include me, which is why I enjoy writing these kinds of blog posts. I’m lazy – just like you! No more artificial line breaks between CREATE OR REPLACE and your PL/SQL In versions 3.2 and older, when you pull up your stored procedural objects in our editor, you would see a line break inserted between the CREATE OR REPLACE and then the body of your code. In version 3.2.1, we have removed the line break. 3.1 3.2.1 Trivia Did You Know? The database doesn’t store the ‘CREATE’ or ‘CREATE OR REPLACE’ bit of your PL/SQL code in the database. If we look at the USER_SOURCE view, we can see that the code begins with the object name. So the CREATE OR REPLACE bit is ‘artificial’ The intent is to give you the code necessary to recreate your object – and have it ‘compile’ into the database. We pretty much HAVE to add the ‘CREATE OR REPLACE.’ From now on it will appear inline with the first line of your code. Exporting Tables & Views When exporting data from your tables or views, previous versions of SQL Developer presented a 3 step wizard. It allows you to choose your columns and apply data filters for what is exported. This was kind of redundant. The grids already allowed you to select your columns and apply filters. Wouldn’t it be more intuitive AND efficient to just make the grids behave in a What You See Is What You Get (WYSIWYG) fashion? In version 3.2.1, that is exactly what will happen. The wizard now only has two steps and the grid will export the data and columns as defined in the visible grid. Let the grid properties define what is actually exported! And here is what is pasted into my worksheet: "BREWERY"|"CITY" "3 Brewers Restaurant Micro-Brewery"|"Toronto" "Amsterdam Brewing Co."|"Toronto" "Ball Brewing Company Ltd."|"Toronto" "Big Ram Brewing Company"|"Toronto" "Black Creek Historic Brewery"|"Toronto" "Black Oak Brewing"|"Toronto" "C'est What?"|"Toronto" "Cool Beer Brewing Company"|"Toronto" "Denison's Brewing"|"Toronto" "Duggan's Brewery"|"Toronto" "Feathers"|"Toronto" "Fermentations! - Danforth"|"Toronto" "Fermentations! - Mount Pleasant"|"Toronto" "Granite Brewery & Restaurant"|"Toronto" "Labatt's Breweries of Canada"|"Toronto" "Mill Street Brew Pub"|"Toronto" "Mill Street Brewery"|"Toronto" "Molson Breweries of Canada"|"Toronto" "Molson Brewery at Air Canada Centre"|"Toronto" "Pioneer Brewery Ltd."|"Toronto" "Post-Production Bistro"|"Toronto" "Rotterdam Brewing"|"Toronto" "Steam Whistle Brewing"|"Toronto" "Strand Brasserie"|"Toronto" "Upper Canada Brewing"|"Toronto" JUST what I wanted And One Last Thing Speaking of export, sometimes I want to send data to Excel. And sometimes I want to send multiple objects to Excel – to a single Excel file that is. In version 3.2.1 you can now do that. Let’s export the bulk of the HR schema to Excel, with each table going to it’s own workbook in the same worksheet. Select many tables, put them in in a single Excel worksheet If you try this in previous versions of SQL Developer it will just write the first table to the Excel file. This is one of the bugs we addressed in v3.2.1. Here is what the output Excel file looks like now: Many tables - Many workbooks in an Excel Worksheet I have a sneaky suspicion that this will be a frequently used feature going forward. Excel seems to be the cornerstone of many of our popular features. Imagine that!

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  • Answers to “What source control system do you use?” (and some winners)

    - by jamiet
    About a month ago I posed a question here on my blog SQL Server devs–what source control system do you use, if any? (answer and maybe win free stuff) in which I asked SQL Server developers to answer the following questions: Are you putting your SQL Server code into a source control system? If so, what source control server software (e.g. TFS, Git, SVN, Mercurial, SourceSafe, Perforce) are you using? What source control client software are you using (e.g. TFS Team Explorer, Tortoise, Red Gate SQL Source Control, Red Gate SQL Connect, Git Bash, etc…)? Why did you make those particular software choices? Any interesting anecdotes to share in regard to your use of source control and SQL Server? I had some really great responses (I highly recommend going and reading them). I promised that the five best, most thought-provoking, responses (as determined by me) would win one of five pairs of licenses for Red Gate SQL Source Control and Red Gate SQL Connect; here are the five that I chose (note that if you responded but did not leave a means of getting in touch then you weren’t considered for one of the prizes – sorry): In general, I don't think the management overhead and licensing cost associated with TFS is worthwhile if all you're doing is using source control. To get value from TFS, at a minimum you need to be using team build, and possibly other stuff as well, such as the sharepoint integration. If that's all you need, then svn with Tortoise would be my first choice. If you want to add build automation later, you can do this with cruisecontrol (is it still called that?), JetBrains, etc. For a long time I thought that Redgate's claims about "bridging the SSMS-VS divide" were a load of hot air, since in my experience anyone who knew what they were doing was using Visual Studio, in particular SSDT and its predecessors. However, on a recent client I was putting in source control for the first time, and I discovered that the "divide" really does exist. That client has ended up using svn with Redgate SQL Source Control, with no build automation, but with scope to add it in the future. Gavin Campbell I think putting the DB under source control is a great idea.  I have issues with the earlier versions of SQL Source Control in that it provides little help in versioning the DB. I think the latest version merges SQL Compare and SQL Source Control together.  Which is how it should have been all along. Sure I have the DB scripts in SVN, but I can't automate DB builds and changes without more tools.  Frankly I'm surprised databases don't have some sort of versioning built into them. Nick Portelli Source control has been immensely useful and saved me from a lot of rework on more than one occasion.  I have learned that you have to be extremely careful checking in data.  Our system is internal only so during the system production run once a week, if there is a problem that I can fix easily(for example, a control table points to a file in the wrong environment), I'll do it directly in production so the run can continue as soon as possible since we have a specified time window.  We do full test runs to minimize this but it has come up once or twice.  We use Red-Gate source control to "push" from the test environment to the production environment.  There have been a couple of occasions where the test environment with the wrong setting was pushed back over the production environment because the change was made only in production.  Gotta keep an eye on that. Alan Dykes Goodness is it manual.  And can be extremely painful at times.  Not only are we running thin, we are constrained on the tools we can get ($$ must mean free).  Certainly no excuse, and a great opportunity to improve my skills by learning new things.  But...  Getting buy in a on a proven process or methodology is hard, takes time, and diverts us from development.  If SQL Source Control is easy to use and proven oh boy could you get some serious fans around here!  Seriously though, as the "accidental dba" of this shop any new ideas / easy to implement tools can make a world of difference in productivity and most importantly accuracy.  Manual = bad. :) John Hennesey (who left his email address) The one thing I would love to know more about is the unique challenges of working with databases as source code - you can store scripts, but are they written as deployment scripts with all the logic about how to apply them to an existing DB? Where is that baseline DB? Where's the data? How does a team share the data and the code? It's a real challenge. Merrill Aldrich Congratulations to the five of you. Red Gate will be in touch with you soon about your free licenses. Thank you to all those that responded. And again, go and check out all the responses – those above are only small proportion from what is a very interesting comment thread. @Jamiet

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  • Vacations on Rodrigues 2014

    And now something completely different compared to the usual technical or community related articles here on this blog. Yes, this time I'm writing some lines on my (and my family's) activities during our long weekend stay on Rodrigues. So, please bear with me, it's eventually a bit more personal... Grab a soda, some popcorn and a cosy place to continue to read. var googleAlbumLink = "https://plus.google.com/photos/117698191428446859536/albums/6047895311458281985"; //optional----------------------- var mySlideWidth = 580; var mySlideHeight = 340; var mySlideDelay = 7000; //delay in milliseconds Special promotions during school holidays Originally, our children started to ask more frequently about going on the plane again. Obviously, after their aunty from Germany was around during May, they were really eager to travel again. So, we decided that it might be a great opportunity to book some vacations during their school holidays. And just in time the local hotels and hotel groups started to advertise their special promotions for citizens and residents. After collecting multiple brochures over several days, we got attracted by various hotel packages on Rodrigues - most interestingly the expenses for the stay and flight ticket were less compared to other resorts here on the main island. As we have been to Rodrigues already back in 2008, we followed up on this idea and got in touch with a couple travel agencies. Well, I have to report that you should be really careful about the promotions from some of them. We had a very negative experience with Shamal Travel Agency in Quatre Bornes regarding their adverts and the actual price levels and age definition for children. Please, stay away from them if you are interested in transparent cost and services. Anyway, after some arrangements with two other close families we managed to confirm our stay at the Cotton Bay Hotel in Rodrigues. Given the fact that we already stayed there, and the hotel has been renovated recently, and it is under new management all looked very promising and relaxed for our vacation. Counting the days... As we already booked in July our children were counting down the days. And it got more interesting as soon as they were on school holidays finally. Well, the day arrived and waking them up at 2:30 hrs wasn't a problem after all. Quite the opposite it was fascinating for us parents to watch them waiting for the transport and later on during the airport transfer. Despite the early hours both didn't fall asleep and it was all so exciting. We are taking the plane! Well organised by the Cotton Bay Hotel Honestly, it was a breeze and a smooth ride during our stay at the hotel. From the airport transfer, the cleanliness of our bungalow, the organisation of our day trips, and the SPA - all very well and enjoyable. The children had great fun, and although it was a bit too windy to plunge into the pool they had a lot of fun with other activities on the beach and at the Kid's Club. Oh, and we had our private petting zoo with cows, sheep and goats just close to the terrace. Some of us went to check out the SPA facilities and I have to admit that the services regarding Hammam and Sauna are better than at some other hotels in Mauritius. I don't know after how many months or years I was once again enjoying a very hot sauna. Little draw-back but nothing to worry about... There is no cold water or at least ice cubes to cool down the body, but hey there was a nice breeze coming over the hills. Some day trips to mention Based on a friend's recommendation we walked to a "restaurant" called Chez Solange & Robert. Hahaha, restaurant is widely stretched in this case, as we enjoyed a great BBQ with fresh lobster, whole fish, and pieces of chicken breast in an open cottage. Just some wooden structure covered with dried palm leaves on the roof - island feeling pure! The other day we went to the Giant Tortoise & Cave Reserve Francois Leguat to observe the giant Aldabra turtles and to visit the Grande Caverne. The biggest limestone cave on the island. Compared to our last visit this was a novelty after checking out the Caverne Partate. The formations of stalactites and stalagmites are very impressive and imaginative. Our guide had lots of funny terms and despite the low light conditions the kids had a great time wandering around on the narrow wooden paths and stairs. And last but not least, we decided to check out the Tyrodrig zip lines... Everyone was allowed to join the trip through the air, and our little ones stayed close to our field guides. But finally went on their own on the very last traversal. Puuuh, it was astounishing to glide over the valley, and for sure something to repeat next time. Impressions of our vacation on Rodrigues 2014   Next stay has been discussed already Oh yes, Rodrigues baby! We are going to come again! Tentative dates have been discussed already and now it's up to us to earn enough our next holiday on that wonderful remote piece of paradise. Eventually, a little bit longer than this time. We'll see...

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  • SQL SERVER – Weekly Series – Memory Lane – #006

    - by pinaldave
    Here is the list of selected articles of SQLAuthority.com across all these years. Instead of just listing all the articles I have selected a few of my most favorite articles and have listed them here with additional notes below it. Let me know which one of the following is your favorite article from memory lane. 2006 This was my very first year of blogging so I was every day learning something new. As I have said many times, that blogging was never an intention. I had really not understood what exactly I am working on or beginning when I was beginning blogging in 2006. I had never knew that my life was going to change forever, once I started blogging. When I look back all of this year, I am happy that we are here together. 2007 IT Outsourcing to India – Top 10 Reasons Companies Outsource Outsourcing is about trust, collaboration and success. Helping other countries in need has been always the course of mankind, outsourcing is nothing different then that. With information technology and process improvements increasing the complexity, costs and skills required to accomplish routine tasks as well as challenging complex tasks, companies are outsourcing such tasks to providers who have the expertise to perform them at lower costs , with greater value and quality outcome. UDF – Remove Duplicate Chars From String This was a very interesting function I wrote in my early career. I am still using this function when I have to remove duplicate chars from strings. I have yet to come across a scenario where it does not work so I keep on using it till today. Please leave a comment if there is any better solution to this problem. FIX : Error : 3702 Cannot drop database because it is currently in use This is a very generic error when DROP Database is command is executed and the database is not dropped. The common mistake user is kept the connection open with this database and trying to drop the database. The database cannot be dropped if there is any other connection open along with it. It is always a good idea to take database in single user mode before dropping it. Here is the quick tutorial regarding how to bring the database in single user mode: Using T-SQL | Using SSMS. 2008 Install SQL Server 2008 – How to Upgrade to SQL Server 2008 – Installation Tutorial This was indeed one of the most popular articles in SQL Server 2008. Lots of people wanted to learn how to install SQL SErver 2008 but they were facing various issues while installation. I build this tutorial which becomes reference points for many. Default Collation of SQL Server 2008 What is the collation of SQL Server 2008 default installations? I often see this question confusing many experienced developers as well. Well the answer is in following image. Ahmedabad SQL Server User Group Meeting – November 2008 User group meetings are fun, now a days I am going to User Group meetings every week but there was a case when I have been just a beginner on this subject. The bug of the community was caught on me years ago when I started to present in Ahmedabad and Gandhinagar SQ LServer User Groups. 2009 Validate an XML document in TSQL using XSD My friend Jacob Sebastian wrote an excellent article on the subject XML and XSD. Because of the ‘eXtensible’ nature of XML (eXtensible Markup Language), often there is a requirement to restrict and validate the content of an XML document to a pre-defined structure and values. XSD (XML Schema Definition Language) is the W3C recommended language for describing and validating XML documents. SQL Server implements XSD as XML Schema Collections. Star Join Query Optimization At present, when queries are sent to very large databases, millions of rows are returned. Also the users have to go through extended query response times when joining multiple tables are involved with such queries. ‘Star Join Query Optimization’ is a new feature of SQL Server 2008 Enterprise Edition. This mechanism uses bitmap filtering for improving the performance of some types of queries by the effective retrieval of rows from fact tables. 2010 These puzzles are very interesting and intriguing – there was lots of interest on this subject. If you have free time this weekend. You may want to try them out. SQL SERVER – Challenge – Puzzle – Usage of FAST Hint (Solution)  SQL SERVER – Puzzle – Challenge – Error While Converting Money to Decimal (Solution)  SQL SERVER – Challenge – Puzzle – Why does RIGHT JOIN Exists (Open)  Additionally, I had great fun presenting SQL Server Performance Tuning seminar at fantastic locations in Hyderabad. Installing AdventeWorks Database This has been the most popular request I have received on my blog. Here is the quick video about how one can install AdventureWorks. 2011 Effect of SET NOCOUNT on @@ROWCOUNT There was an interesting incident once while I was presenting a session. I wrote a code and suddenly 10 hands went up in the air.  This was a bit surprise to me as I do not know why they all got alerted. I assumed that there should be something wrong with either project, screen or my display. However the real reason was very interesting – I suggest you read the complete blog post to understand this interesting scenario. Error: Deleting Offline Database and Creating the Same Name This is very interesting because once a user deletes the offline database the MDF and LDF file still exists and if the user attempts to create a new database with the same name it will give error. I found this very interesting and the blog explains the concept very quickly. Have you ever faced a similar situation? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Memory Lane, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Getting started with Oracle Database In-Memory Part III - Querying The IM Column Store

    - by Maria Colgan
    In my previous blog posts, I described how to install, enable, and populate the In-Memory column store (IM column store). This weeks post focuses on how data is accessed within the IM column store. Let’s take a simple query “What is the most expensive air-mail order we have received to date?” SELECT Max(lo_ordtotalprice) most_expensive_order FROM lineorderWHERE  lo_shipmode = 5; The LINEORDER table has been populated into the IM column store and since we have no alternative access paths (indexes or views) the execution plan for this query is a full table scan of the LINEORDER table. You will notice that the execution plan has a new set of keywords “IN MEMORY" in the access method description in the Operation column. These keywords indicate that the LINEORDER table has been marked for INMEMORY and we may use the IM column store in this query. What do I mean by “may use”? There are a small number of cases were we won’t use the IM column store even though the object has been marked INMEMORY. This is similar to how the keyword STORAGE is used on Exadata environments. You can confirm that the IM column store was actually used by examining the session level statistics, but more on that later. For now let's focus on how the data is accessed in the IM column store and why it’s faster to access the data in the new column format, for analytical queries, rather than the buffer cache. There are four main reasons why accessing the data in the IM column store is more efficient. 1. Access only the column data needed The IM column store only has to scan two columns – lo_shipmode and lo_ordtotalprice – to execute this query while the traditional row store or buffer cache has to scan all of the columns in each row of the LINEORDER table until it reaches both the lo_shipmode and the lo_ordtotalprice column. 2. Scan and filter data in it's compressed format When data is populated into the IM column it is automatically compressed using a new set of compression algorithms that allow WHERE clause predicates to be applied against the compressed formats. This means the volume of data scanned in the IM column store for our query will be far less than the same query in the buffer cache where it will scan the data in its uncompressed form, which could be 20X larger. 3. Prune out any unnecessary data within each column The fastest read you can execute is the read you don’t do. In the IM column store a further reduction in the amount of data accessed is possible due to the In-Memory Storage Indexes(IM storage indexes) that are automatically created and maintained on each of the columns in the IM column store. IM storage indexes allow data pruning to occur based on the filter predicates supplied in a SQL statement. An IM storage index keeps track of minimum and maximum values for each column in each of the In-Memory Compression Unit (IMCU). In our query the WHERE clause predicate is on the lo_shipmode column. The IM storage index on the lo_shipdate column is examined to determine if our specified column value 5 exist in any IMCU by comparing the value 5 to the minimum and maximum values maintained in the Storage Index. If the value 5 is outside the minimum and maximum range for an IMCU, the scan of that IMCU is avoided. For the IMCUs where the value 5 does fall within the min, max range, an additional level of data pruning is possible via the metadata dictionary created when dictionary-based compression is used on IMCU. The dictionary contains a list of the unique column values within the IMCU. Since we have an equality predicate we can easily determine if 5 is one of the distinct column values or not. The combination of the IM storage index and dictionary based pruning, enables us to only scan the necessary IMCUs. 4. Use SIMD to apply filter predicates For the IMCU that need to be scanned Oracle takes advantage of SIMD vector processing (Single Instruction processing Multiple Data values). Instead of evaluating each entry in the column one at a time, SIMD vector processing allows a set of column values to be evaluated together in a single CPU instruction. The column format used in the IM column store has been specifically designed to maximize the number of column entries that can be loaded into the vector registers on the CPU and evaluated in a single CPU instruction. SIMD vector processing enables the Oracle Database In-Memory to scan billion of rows per second per core versus the millions of rows per second per core scan rate that can be achieved in the buffer cache. I mentioned earlier in this post that in order to confirm the IM column store was used; we need to examine the session level statistics. You can monitor the session level statistics by querying the performance views v$mystat and v$statname. All of the statistics related to the In-Memory Column Store begin with IM. You can see the full list of these statistics by typing: display_name format a30 SELECT display_name FROM v$statname WHERE  display_name LIKE 'IM%'; If we check the session statistics after we execute our query the results would be as follow; SELECT Max(lo_ordtotalprice) most_expensive_order FROM lineorderWHERE lo_shipmode = 5; SELECT display_name FROM v$statname WHERE  display_name IN ('IM scan CUs columns accessed',                        'IM scan segments minmax eligible',                        'IM scan CUs pruned'); As you can see, only 2 IMCUs were accessed during the scan as the majority of the IMCUs (44) in the LINEORDER table were pruned out thanks to the storage index on the lo_shipmode column. In next weeks post I will describe how you can control which queries use the IM column store and which don't. +Maria Colgan

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  • PASS Summit 2011 &ndash; Part III

    - by Tara Kizer
    Well we’re about a month past PASS Summit 2011, and yet I haven’t finished blogging my notes! Between work and home life, I haven’t been able to come up for air in a bit.  Now on to my notes… On Thursday of the PASS Summit 2011, I attended Klaus Aschenbrenner’s (blog|twitter) “Advanced SQL Server 2008 Troubleshooting”, Joe Webb’s (blog|twitter) “SQL Server Locking & Blocking Made Simple”, Kalen Delaney’s (blog|twitter) “What Happened? Exploring the Plan Cache”, and Paul Randal’s (blog|twitter) “More DBA Mythbusters”.  I think my head grew two times in size from the Thursday sessions.  Just WOW! I took a ton of notes in Klaus' session.  He took a deep dive into how to troubleshoot performance problems.  Here is how he goes about solving a performance problem: Start by checking the wait stats DMV System health Memory issues I/O issues I normally start with blocking and then hit the wait stats.  Here’s the wait stat query (Paul Randal’s) that I use when working on a performance problem.  He highlighted a few waits to be aware of such as WRITELOG (indicates IO subsystem problem), SOS_SCHEDULER_YIELD (indicates CPU problem), and PAGEIOLATCH_XX (indicates an IO subsystem problem or a buffer pool problem).  Regarding memory issues, Klaus recommended that as a bare minimum, one should set the “max server memory (MB)” in sp_configure to 2GB or 10% reserved for the OS (whichever comes first).  This is just a starting point though! Regarding I/O issues, Klaus talked about disk partition alignment, which can improve SQL I/O performance by up to 100%.  You should use 64kb for NTFS cluster, and it’s automatic in Windows 2008 R2. Joe’s locking and blocking presentation was a good session to really clear up the fog in my mind about locking.  One takeaway that I had no idea could be done was that you can set a timeout in T-SQL code view LOCK_TIMEOUT.  If you do this via the application, you should trap error 1222. Kalen’s session went into execution plans.  The minimum size of a plan is 24k.  This adds up fast especially if you have a lot of plans that don’t get reused much.  You can use sys.dm_exec_cached_plans to check how often a plan is being reused by checking the usecounts column.  She said that we can use DBCC FLUSHPROCINDB to clear out the stored procedure cache for a specific database.  I didn’t know we had this available, so this was great to hear.  This will be less intrusive when an emergency comes up where I’ve needed to run DBCC FREEPROCCACHE. Kalen said one should enable “optimize for ad hoc workloads” if you have an adhoc loc.  This stores only a 300-byte stub of the first plan, and if it gets run again, it’ll store the whole thing.  This helps with plan cache bloat.  I have a lot of systems that use prepared statements, and Kalen says we simulate those calls by using sp_executesql.  Cool! Paul did a series of posts last year to debunk various myths and misconceptions around SQL Server.  He continues to debunk things via “DBA Mythbusters”.  You can get a PDF of a bunch of these here.  One of the myths he went over is the number of tempdb data files that you should have.  Back in 2000, the recommendation was to have as many tempdb data files as there are CPU cores on your server.  This no longer holds true due to the numerous cores we have on our servers.  Paul says you should start out with 1/4 to 1/2 the number of cores and work your way up from there.  BUT!  Paul likes what Bob Ward (twitter) says on this topic: 8 or less cores –> set number of files equal to the number of cores Greater than 8 cores –> start with 8 files and increase in blocks of 4 One common myth out there is to set your MAXDOP to 1 for an OLTP workload with high CXPACKET waits.  Instead of that, dig deeper first.  Look for missing indexes, out-of-date statistics, increase the “cost threshold for parallelism” setting, and perhaps set MAXDOP at the query level.  Paul stressed that you should not plan a backup strategy but instead plan a restore strategy.  What are your recoverability requirements?  Once you know that, now plan out your backups. As Paul always does, he talked about DBCC CHECKDB.  He said how fabulous it is.  I didn’t want to interrupt the presentation, so after his session had ended, I asked Paul about the need to run DBCC CHECKDB on your mirror systems.  You could have data corruption occur at the mirror and not at the principal server.  If you aren’t checking for data corruption on your mirror systems, you could be failing over to a corrupt database in the case of a disaster or even a planned failover.  You can’t run DBCC CHECKDB against the mirrored database, but you can run it against a snapshot off the mirrored database.

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  • My Red Gate Experience

    - by Colin Rothwell
    I’m Colin, and I’ve been an intern working with Mike in publishing on Simple-Talk and SQLServerCentral for the past ten weeks. I’ve mostly been working “behind the scenes”, making improvements to the spam filtering, along with various other small tweaks. When I arrived at Red Gate, one of the first things Mike asked me was what I wanted to get out of the internship. It wasn’t a question I’d given a great deal of thought to, but my immediate response was the same as almost anybody: to support my growing family. Well, ok, not quite that, but money was certainly a motivator, along with simply making sure that I didn’t get bored over the summer. Three months is a long time to fill, and many of my friends end up getting bored, or worse, knitting obsessively. With the arrogance which seems fairly common among Cambridge people, I wasn’t expecting to really learn much here! In my mind, the part of the year where I am at Uni is the part where I learn things, whilst Red Gate would be an opportunity to apply what I’d learnt. Thankfully, the opposite is true: I’ve learnt a lot during my time here, and there has been a definite positive impact on the way I write code. The first thing I’ve really learnt is that test-driven development is, in general, a sensible way of working. Before coming, I didn’t really get it: how could you test something you hadn’t yet written? It didn’t make sense! My problem was seeing a test as having to test all the behaviour of a given function. Writing tests which test the bare minimum possible and building them up is a really good way of crystallising the direction the code needs to grow in, and ensures you never attempt to write too much code at time. One really good experience of this was early on in my internship when Mike and I were working on the query used to list active authors: I’d written something which I thought would do the trick, but by starting again using TDD we grew something which revealed that there were several subtle mistakes in the query I’d written. I’ve also been awakened to the value of pair programming. Whilst I could sort of see the point before coming, I also thought that it was impossible that two people would ever get more done at the same computer than if they were working separately. I still think that this is true for projects with pieces that developers can easily work on independently, and with developers who both know the codebase, but I’ve found that pair programming can be really good for learning a code base, and for building up small projects to the point where you can start working on separate components, as well as solving particularly difficult problems. Later on in my internship, for my down tools week project, I was working on adding Python support to Glimpse. Another intern and I we pair programmed the entire project, using ping pong pair programming as much as possible. One bonus that this brought which I wasn’t expecting was that I found myself less prone to distraction: with someone else peering over my shoulder, I didn’t have the ever-present temptation to open gmail, or facebook, or yammer, or twitter, or hacker news, or reddit, and so on, and so forth. I’m quite proud of this project: I think it’s some of the best code I’ve written. I’ve also been really won over to the value of descriptive variables names. In my pre-Red Gate life, as a lone-ranger style cowboy programmer, I’d developed a tendency towards laziness in variable names, sometimes abbreviating or, worse, using acronyms. I’ve swiftly realised that this is a bad idea when working with a team: saving a few key strokes is inevitably not worth it when it comes to reading code again in the future. Longer names also mean you can do away with a majority of comments. I appreciate that if you’ve come up with an O(n*log n) algorithm for something which seemed O(n^2), you probably want to explain how it works, but explaining what a variable name means is a big no no: it’s so very easy to change the behaviour of the code, whilst forgetting about the comments. Whilst at Red Gate, I took the opportunity to attend a code retreat, which really helped me to solidify all the things I’d learnt. To be completely free of any existing code base really lets you focus on best practises and think about how you write code. If you get a chance to go on a similar event, I’d highly recommend it! Cycling to Red Gate, I’ve also become much better at fitting inner tubes: if you’re struggling to get the tube out, or re-fit the tire, letting a bit of air out usually helps. I’ve also become quite a bit better at foosball and will miss having a foosball table! I’d like to finish off by saying thank you to everyone at Red Gate for having me. I’ve really enjoyed working with, and learning from, the team that brings you this web site. If you meet any of them, buy them a drink!

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  • "Yes, but that's niche."

    - by Geertjan
    JavaOne 2012 has come to an end though it feels like it hasn't even started yet! What happened, time is a weird thing. Too many things to report on. James Gosling's appearance at the JavaOne community keynote was seen, by everyone (which is quite a lot) of people I talked to, as the highlight of the conference. It was interesting that the software for the Duke's Choice Award winning Liquid Robotics that James Gosling is now part of and came to talk about is a Swing application that uses the WorldWind libraries. It was also interesting that James Gosling pointed out to the conference: "There are things you can't do using HTML." That brings me to the wonderful counter argument to the above, which I spend my time running into a lot: "Yes, but that's niche." It's a killer argument, i.e., it kills all discussions completely in one fell swoop. Kind of when you're talking about someone and then this sentence drops into the conversation: "Yes, but she's got cancer now." Here's one implementation of "Yes, but that's niche": Person A: All applications are moving to the web, tablet, and mobile phone. That's especially true now with HTML5, which is going to wipe away everything everywhere and all applications are going to be browser based. Person B: What about air traffic control applications? Will they run on mobile phones too? And do you see defence applications running in a browser? Don't you agree that there are multiple scenarios imaginable where the Java desktop is the optimal platform for running applications? Person A: Yes, but that's niche. Here's another implementation, though it contradicts the above [despite often being used by the same people], since JavaFX is a Java desktop technology: Person A: Swing is dead. Everyone is going to be using purely JavaFX and nothing else. Person B: Does JavaFX have a docking framework and a module system? Does it have a plugin system?  These are some of the absolutely basic requirements of Java desktop software once you get to high end systems, e.g., banks, defence force, oil/gas services. Those kinds of applications need a web browser and so they love the JavaFX WebView component and they also love the animated JavaFX charting components. But they need so much more than that, i.e., an application framework. Aren't there requirements that JavaFX isn't meeting since it is a UI toolkit, just like Swing is a UI toolkit, and what they have in common is their lack, i.e., natively, of any kind of application framework? Don't people need more than a single window and a monolithic application structure? Person A: Yes, but that's niche. In other words, anything that doesn't fit within the currently dominant philosophy is "niche", for no other reason than that it doesn't fit within the currently dominant philosophy... regardless of the actual needs of real developers. Saying "Yes, but that's niche", kills the discussion completely, because it relegates one side of the conversation to the arcane and irrelevant corners of the universe. You're kind of like Cobol now, as soon as "Yes, but that's niche" is said. What's worst about "Yes, but that's niche" is that it doesn't enter into any discussion about user requirements, i.e., there's so few that need this particular solution that we don't even need to talk about them anymore. Note, of course, that I'm not referring specifically or generically to anyone or anything in particular. Just picking up from conversations I've picked up on as I was scurrying around the Hilton's corridors while looking for the location of my next presentation over the past few days. It does, however, mean that there were people thinking "Yes, but that's niche" while listening to James Gosling pointing out that HTML is not the be-all and end-all of absolutely everything. And so this all leaves me wondering: How many applications must be part of a niche for the niche to no longer be a niche? And what if there are multiple small niches that have the same requirements? Don't all those small niches together form a larger whole, one that should be taken seriously, i.e., a whole that is not a niche?

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  • Oracle OpenWorld Preview: Let's Get Social and Interactive

    - by Christie Flanagan
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} On this blog, we often write about getting social and interactive.  Usually, we’re talking about how to create a social business or how to make the customer experience more social and interactive.  Today’s topic is about getting social and interactive as well. But this time we’re talking about getting social and interactive the old fashioned way, face-to-face at Oracle OpenWorld with fellow Oracle WebCenter customers, partners and experts and the broader Oracle community.  Here are some great ways to get social at OpenWorld outside of the exhibition halls and meeting rooms: Oracle OpenWorld Welcome Reception - Sponsored by FujitsuSunday, September 30, 7:00 p.m.–8:30 p.m.Yerba Buena Gardens & Howard Street Tent You’ll definitely want to attend the Opening Ceremonies for Oracle OpenWorld 2012 on Sunday, September 30. Centered in Yerba Buena Gardens (YBG) and shimmying out to other venues, the Opening Ceremonies are not to be missed. Join other attendees for great food and drink, energizing music, networking opportunities, and more. While you’re at YBG (home of ORACLE TEAM USA’s America’s Cup Pavilion), be sure to meet the sailors who will be defending the 34th America’s Cup in 2013. Get a good look at the 161-year old Trophy itself—the oldest trophy still being contested in international sport. And at the AC72 boat display, view a model of the largest wingsail ever built. Oracle WebCenter Customer Appreciation ReceptionTuesday, October 2, 6:30 p.m.—9:30 p.m.The Palace Hotel, Rallston BallroomThose Oracle WebCenter customers who’ve RSVP’d to attend the Oracle WebCenter Customer Appreciation Reception shouldn’t miss this private cocktail reception at one of San Francisco’s finest hotels. Sponsored by Oracle WebCenter partners Fishbowl Solutions, Fujitsu, Keste, Mythics, Redstone Content Solutions, TEAM Informatics, and TekStream, this evening will provide plenty of time to interact with other WebCenter customers, partners and employees over hors d'oeuvres and cocktails. Oracle Appreciation Event – Sponsored by CSC, Fujitsu and IntelWednesday, October 3, 7:30 p.m.—1:00 a.m.Treasure Island, San Francisco On Wednesday night October 3, Treasure Island will be engineered to rock as the Oracle Appreciation Event gets revved up and attendees get rolling. As always at the Oracle Appreciation Event, there will be unlimited refreshments, fun and games, the most awesome views of San Francisco from just about anywhere, and top notch entertainment.  Past performers read like a veritable who’s who of the rock and roll elite. Join us—it's our way of saying thanks to you for supporting Oracle and our flagship conference. Complimentary shuttle service to and from Treasure Island will be provided, so all you have to worry about is having a rocking night of your own. Oracle OpenWorld Music FestivalSeptember 30-October 4, Check schedule for venues and times.Oracle presents the first annual Oracle OpenWorld Musical Festival, featuring some of today’s breakthrough musicians from around the country and the world including Macy Gray, Joss Stone, Jimmy Cliff and The Hives. It’s five nights of back-to-back performances in the heart of San Francisco. Registered Oracle conference attendees get free admission, so remember your badge when you head to a show. With limited space at some venues, these concerts are first-come, first-served. So mark your calendars and get ready for the music to begin. See you there!I hope this give you an idea of the many opportunities to socialize and interact with the Oracle community at OpenWorld, and if you’re a music lover like me, you’re in for a special treat as we debut our first annual Oracle OpenWorld Music Festival.  Check out the links below for more information on these events and the many featured performers: Reflections from the Young Prisms A Brief Soul Session with Joss Stone Mixing It Up with Blues Mix Red Meat’s Music is Rare and Well Done The English Beat’s Dave Wakeling Gets Philosophical Top Ten Reasons to Attend the Oracle Appreciation Event There’s Magic in the Air, There’ll Be Music Everywhere Looking forward to seeing you at OpenWorld!

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  • Libnoise producing completely random noise

    - by Doodlemeat
    I am using libnoise in C++ taken and I have some problems with getting coherent noise. I mean, the noise produced now are completely random and it doesn't look like a noise. Here's a to the image produced by my game. I am diving the map into several chunks, but I can't seem to find any problem doing that since libnoise supports tileable noise. The code can be found below. Every chunk is 8x8 tiles large. Every tile is 64x64 pixels. I am also providing a link to download the entire project. It was made in Visual Studio 2013. Download link This is the code for generating a chunk Chunk *World::loadChunk(sf::Vector2i pPosition) { sf::Vector2i chunkPos = pPosition; pPosition.x *= mChunkTileSize.x; pPosition.y *= mChunkTileSize.y; sf::FloatRect bounds(static_cast<sf::Vector2f>(pPosition), sf::Vector2f(static_cast<float>(mChunkTileSize.x), static_cast<float>(mChunkTileSize.y))); utils::NoiseMap heightMap; utils::NoiseMapBuilderPlane heightMapBuilder; heightMapBuilder.SetSourceModule(mNoiseModule); heightMapBuilder.SetDestNoiseMap(heightMap); heightMapBuilder.SetDestSize(mChunkTileSize.x, mChunkTileSize.y); heightMapBuilder.SetBounds(bounds.left, bounds.left + bounds.width - 1, bounds.top, bounds.top + bounds.height - 1); heightMapBuilder.Build(); Chunk *chunk = new Chunk(this); chunk->setPosition(chunkPos); chunk->buildChunk(&heightMap); chunk->setTexture(&mTileset); mChunks.push_back(chunk); return chunk; } This is the code for building the chunk void Chunk::buildChunk(utils::NoiseMap *pHeightMap) { // Resize the tiles space mTiles.resize(pHeightMap->GetWidth()); for (int x = 0; x < mTiles.size(); x++) { mTiles[x].resize(pHeightMap->GetHeight()); } // Set vertices type and size mVertices.setPrimitiveType(sf::Quads); mVertices.resize(pHeightMap->GetWidth() * pHeightMap->GetWidth() * 4); // Get the offset position of all tiles position sf::Vector2i tileSize = mWorld->getTileSize(); sf::Vector2i chunkSize = mWorld->getChunkSize(); sf::Vector2f offsetPositon = sf::Vector2f(mPosition); offsetPositon.x *= chunkSize.x; offsetPositon.y *= chunkSize.y; // Build tiles for (int x = 0; x < mTiles.size(); x++) { for (int y = 0; y < mTiles[x].size(); y++) { // Sometimes libnoise can return a value over 1.0, better be sure to cap the top and bottom.. float heightValue = pHeightMap->GetValue(x, y); if (heightValue > 1.f) heightValue = 1.f; if (heightValue < -1.f) heightValue = -1.f; // Instantiate a new Tile object with the noise value, this doesn't do anything yet.. mTiles[x][y] = new Tile(this, pHeightMap->GetValue(x, y)); // Get a pointer to the current tile's quad sf::Vertex *quad = &mVertices[(y + x * pHeightMap->GetWidth()) * 4]; quad[0].position = sf::Vector2f(offsetPositon.x + x * tileSize.x, offsetPositon.y + y * tileSize.y); quad[1].position = sf::Vector2f(offsetPositon.x + (x + 1) * tileSize.x, offsetPositon.y + y * tileSize.y); quad[2].position = sf::Vector2f(offsetPositon.x + (x + 1) * tileSize.x, offsetPositon.y + (y + 1) * tileSize.y); quad[3].position = sf::Vector2f(offsetPositon.x + x * tileSize.x, offsetPositon.y + (y + 1) * tileSize.y); // find out which type of tile to render, atm only air or stone TileStop *tilestop = mWorld->getTileStopAt(heightValue); sf::Vector2i texturePos = tilestop->getTexturePosition(); // define its 4 texture coordinates quad[0].texCoords = sf::Vector2f(texturePos.x, texturePos.y); quad[1].texCoords = sf::Vector2f(texturePos.x + 64, texturePos.y); quad[2].texCoords = sf::Vector2f(texturePos.x + 64, texturePos.y + 64); quad[3].texCoords = sf::Vector2f(texturePos.x, texturePos.y + 64); } } } All the code that uses libnoise in some way are World.cpp, World.h and Chunk.cpp, Chunk.h in the project.

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  • Computer Networks UNISA - Chap 8 &ndash; Wireless Networking

    - by MarkPearl
    After reading this section you should be able to Explain how nodes exchange wireless signals Identify potential obstacles to successful transmission and their repercussions, such as interference and reflection Understand WLAN architecture Specify the characteristics of popular WLAN transmission methods including 802.11 a/b/g/n Install and configure wireless access points and their clients Describe wireless MAN and WAN technologies, including 802.16 and satellite communications The Wireless Spectrum All wireless signals are carried through the air by electromagnetic waves. The wireless spectrum is a continuum of the electromagnetic waves used for data and voice communication. The wireless spectrum falls between 9KHZ and 300 GHZ. Characteristics of Wireless Transmission Antennas Each type of wireless service requires an antenna specifically designed for that service. The service’s specification determine the antenna’s power output, frequency, and radiation pattern. A directional antenna issues wireless signals along a single direction. An omnidirectional antenna issues and receives wireless signals with equal strength and clarity in all directions The geographical area that an antenna or wireless system can reach is known as its range Signal Propagation LOS (line of sight) uses the least amount of energy and results in the reception of the clearest possible signal. When there is an obstacle in the way, the signal may… pass through the object or be obsrobed by the object or may be subject to reflection, diffraction or scattering. Reflection – waves encounter an object and bounces off it. Diffraction – signal splits into secondary waves when it encounters an obstruction Scattering – is the diffusion or the reflection in multiple different directions of a signal Signal Degradation Fading occurs as a signal hits various objects. Because of fading, the strength of the signal that reaches the receiver is lower than the transmitted signal strength. The further a signal moves from its source, the weaker it gets (this is called attenuation) Signals are also affected by noise – the electromagnetic interference) Interference can distort and weaken a wireless signal in the same way that noise distorts and weakens a wired signal. Frequency Ranges Older wireless devices used the 2.4 GHZ band to send and receive signals. This had 11 communication channels that are unlicensed. Newer wireless devices can also use the 5 GHZ band which has 24 unlicensed bands Narrowband, Broadband, and Spread Spectrum Signals Narrowband – a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies Broadband – uses a relatively wide band of the wireless spectrum and offers higher throughputs than narrowband technologies The use of multiple frequencies to transmit a signal is known as spread-spectrum technology. In other words a signal never stays continuously within one frequency range during its transmission. One specific implementation of spread spectrum is FHSS (frequency hoping spread spectrum). Another type is known as DSS (direct sequence spread spectrum) Fixed vs. Mobile Each type of wireless communication falls into one of two categories Fixed – the location of the transmitted and receiver do not move (results in energy saved because weaker signal strength is possible with directional antennas) Mobile – the location can change WLAN (Wireless LAN) Architecture There are two main types of arrangements Adhoc – data is sent directly between devices – good for small local devices Infrastructure mode – a wireless access point is placed centrally, that all devices connect with 802.11 WLANs The most popular wireless standards used on contemporary LANs are those developed by IEEE’s 802.11 committee. Over the years several distinct standards related to wireless networking have been released. Four of the best known standards are also referred to as Wi-Fi. They are…. 802.11b 802.11a 802.11g 802.11n These four standards share many characteristics. i.e. All 4 use half duplex signalling Follow the same access method Access Method 802.11 standards specify the use of CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) to access a shared medium. Using CSMA/CA before a station begins to send data on an 802.11 network, it checks for existing wireless transmissions. If the source node detects no transmission activity on the network, it waits a brief period of time and then sends its transmission. If the source does detect activity, it waits a brief period of time before checking again. The destination node receives the transmission and, after verifying its accuracy, issues an acknowledgement (ACT) packet to the source. If the source receives the ACK it assumes the transmission was successful, – if it does not receive an ACK it assumes the transmission failed and sends it again. Association Two types of scanning… Active – station transmits a special frame, known as a prove, on all available channels within its frequency range. When an access point finds the probe frame, it issues a probe response. Passive – wireless station listens on all channels within its frequency range for a special signal, known as a beacon frame, issued from an access point – the beacon frame contains information necessary to connect to the point. Re-association occurs when a mobile user moves out of one access point’s range and into the range of another. Frames Read page 378 – 381 about frames and specific 802.11 protocols Bluetooth Networks Sony Ericson originally invented the Bluetooth technology in the early 1990s. In 1998 other manufacturers joined Ericsson in the Special Interest Group (SIG) whose aim was to refine and standardize the technology. Bluetooth was designed to be used on small networks composed of personal communications devices. It has become popular wireless technology for communicating among cellular telephones, phone headsets, etc. Wireless WANs and Internet Access Refer to pages 396 – 402 of the textbook for details.

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  • Yes, I did it - Skydiving in Mauritius

    Finally, I did it or better said we did it. Already back in November last year I saw the big billboard advertisement of Skydive Austral Mauritius near Caudan Waterfront in Port Louis and decided for myself that this is going to be the perfect birthday gift for my wife. Simply out of curiosity I would join her tandem jump with a second instructor. Due to her pregnancy of our son I had to be patient... But then finally, her birthday had arrived and on our midnight celebration session I showed her her netbook with the website preloaded. Actually, it was the "perfect" timing... Recovery from her cesarean is fine, local weather conditions are gorgious and the children were under surveillance of my mum - spending her annual holidays on the island. So, after late wake-up in the morning, we packed our stuff and off we went. According to Google Maps direction indication we had to drive for roughly 50km (only) but traffic here in Mauritius is always challenging. The dropzone is at the Zone Industrielle Mon Loisir Sugar Estate near Riviere du Rempart at the northern east coast. Anyways, we were not in a hurry and arrived there shortly after noon. The access road to the airfield are just small down-driven paths through sugar cane fields and according to our daughter "it's bumpy!". True true true... The facilities at Skydive Austral Mauritius are complete except for food. Enough space for parking, easy handling at the reception and a lot to see for the kids. There's even a big terrace with several sets of tables and chairs, small bar for soft drinks, strictly non-alcoholic. The team over there is all welcoming and warm-hearthy! Having the kids with us was no issue at all. Quite the opposite, our daugther was allowed to discover a lot of things than we adults did. Even visiting the small air plane was on the menu for her. Really great stuff! While waiting for our turn we enjoyed watching other people getting ready in the jump gear, taking off with the Cessna, and finally coming back down on the tandem parachute. Actually, the different expressions on their faces was one of the best parts while waiting. Great mental preparation as my wife was getting more anxious about her first jump... {loadposition content_adsense} First, we got some information about the procedures on the plane about how to get seated, tight up with our instructors and how to get ready for the jump off the plane as soon as we arrive the height of 10.000 ft. All well explained and easy to understand after all.Next, we met with our jumpers Chris and Lee aka "Rasta" to get dressed and ready for take-off. Those guys are really cool and relaxed for their job. From that point on, the DVD session / recording for my wife's birthday started and we really had a lot of fun... The difference between that small Cessna and a commercial flight with an Airbus or a Boeing is astronomic! The climb up to 10.000 ft took us roughly 25 minutes and we enjoyed the magnificent view over the turquoise lagunes near Poste de Flacq, Lafayette and Isle d'Ambre on the north-east coast. After flying through the clouds we sun-bathed and looked over "iced-sugar covered" Mauritius. You might have a look at the picture gallery of Skydive Mauritius for better imagination. The moment of truth, or better said, point of no return came after approximately 25 minutes. The door opens, moving into position on the side on top of the wheel and... out! Back flip and free fall! Slight turns and Wooooohooooo! through the clouds... It so amazing and breath-taking! So undescribable! You have to experience this yourself! Some seconds later the parachute opened and we glided smoothly with some turns and spins back down to the dropzone. The rest of the family could hear and see us soon and the landing was easy going. We never had any doubts or fear about our instructors. They did a great job and we are looking forward to book our next job. I might even consider to follow educational classes on skydiving and earn a license. By the way, feel free to get in touch with Skydive Austral Mauritius. Either via contact details on their website or tweeting a little bit with them. Follow the tweets of Chris and fellows on SkydiveAustral.

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  • Easiest, most fun way to program 2D games? Flash? XNA? Some other engine?

    - by Maxi
    Hi, this is a post detailing my search for the most enjoyable way for a hobbyist game programmer to sweeten his free time with making a game. My requirements: I looked at Flash first, I made a couple of small games but I'm doubtful of the performance. I would like to make a fairly large strategy game, with several hundred units fighting simultaneously, explosions and animations included. Also zoomable maps. I saw that Adobe has a new 3D API for Flash, but I don't know if that improves 2D performance aswell, I couldn't find anything related to that question on their MAX10 sessions. Would you say that Flash is a good technology for making large 2D games easily? I really like Actionscript, and I love how easy everything is in Flash. There are several engines available which make it even easier. I just do this for fun, and it would be even better if there were proper animation/particle editors available and if the engine I were to use, would be available for multiple platforms. (so more people can play my game once finished). I'd like to have it available on many mobile platforms aswell. (because I love touch input for some reason) I do know the XNA framework pretty well, but there are no good engines available for it, and it will only run on Windows, which is a huge turn off. Even bigger is, that you need to install the XNA redistributable each time you want to give the game to someone. If I use XNA, I would have to make all the tools myself, and I'd probably have to make them with WPF. (I'd love to make tools with Adobe AIR, but unfortunately the API's for image manipulation etc. are far worse in Flash, than they are in XNA/WPF.) Now, I'm aware that I could make my own engine that supports each of those platforms, but quite frankly, that would be too much work plowing through APIs. After all, I want to make a game, not an engine. So the question becomes: Is there maybe a cross platform (free or free to develop?) engine available that I could use for 2D development? I prefer: C#, Actionscript. I don't mind using c++ if the toolset is above average, but I highly doubt that there is something out there like that. Please prove me wrong :) So summary: I'd like to use Flash, but I don't know if it scales well enough. I'm not a scripter, I want some real APIs that I can work with inside a proper IDE. Just for information, I looked at several alternatives, I'm actually looking for a long time already. You'd help me a lot to make a decision finally. Feature-wise the Flatredball engine would be ideal. But I tried their tools, and quite frankly, they are horrible. Absolutely unusable, I'd need to make my own for sure. I didn't look at their API, but if their tools are so bad, I'm not inclined to look further. Unity3D. This one is quite nice, but I really don't need 3D, and it is quite ...a lot of work to learn. I also don't like that it is so expensive to use for different platforms and that I can only code for it through scripting. You have to buy each platform separately. The editor usability is average, the product overall is good enough for most purposes, but learning it myself would be overkill. Shiva 3D. It looks good enough, but again: I don't really need 3D. The editor usability is a little worse than Unity3D in my opinion and it wasn't clear to me how to start programming. I think it requires C++ for coding, so that's a negative too. I want to have fun, and c# is fun ;) SDL. Quite frankly, I'd still need to port to all those different SDL implementations. And I don't like OpenGL style programming, it's just plain ugly. And it needs c++, I know that there might be some wrappers available, but I don't like to use wrappers, because... Irrlicht. A lot of features, but support seems to be low and it is aimed at enthusiasts. C# bindings get dropped repeatedly. I'm not an engine enthusiast, I just want to make a game. I don't see this happening with Irrlicht. Ogre3D. Way too much work, it's just a graphics engine. Also no multiple platform support and c++. Torque2D. Costs something to use, and I didn't hear a lot of good things about support and documentation. Also costs extra for each platform.

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  • Data Binding to Attached Properties

    - by Chris Gardner
    Originally posted on: http://geekswithblogs.net/freestylecoding/archive/2013/06/14/data-binding-to-attached-properties.aspx When I was working on my C#/XAML game framework, I discovered I wanted to try to data bind my sprites to background objects. That way, I could update my objects and the draw functionality would take care of the work for me. After a little experimenting and web searching, it appeared this concept was an impossible dream. Of course, when has that ever stopped me? In my typical way, I started to massively dive down the rabbit hole. I created a sprite on a canvas, and I bound it to a background object. <Canvas Name="GameField" Background="Black"> <Image Name="PlayerStrite" Source="Assets/Ship.png" Width="50" Height="50" Canvas.Left="{Binding X}" Canvas.Top="{Binding Y}"/> </Canvas> Now, we wire the UI item to the background item. public MainPage() { this.InitializeComponent(); this.Loaded += StartGame; }   void StartGame( object sender, RoutedEventArgs e ) { BindingPlayer _Player = new BindingPlayer(); _Player.X = Window.Current.Bounds.Height - PlayerSprite.Height; _Player.X = ( Window.Current.Bounds.Width - PlayerSprite.Width ) / 2.0; } Of course, now we need to actually have our background object. public class BindingPlayer : INotifyPropertyChanged { private double m_X; public double X { get { return m_X; } set { m_X = value; NotifyPropertyChanged(); } }   private double m_Y; public double Y { get { return m_Y; } set { m_Y = value; NotifyPropertyChanged(); } }   public event PropertyChangedEventHandler PropertyChanged; protected void NotifyPropertyChanged( [CallerMemberName] string p_PropertyName = null ) { if( PropertyChanged != null ) PropertyChanged( this, new PropertyChangedEventArgs( p_PropertyName ) ); } } I fired this baby up, and my sprite was correctly positioned on the screen. Maybe the sky wasn't falling after all. Wouldn't it be great if that was the case? I created some code to allow me to move the sprite, but nothing happened. This seems odd. So, I start debugging the application and stepping through code. Everything appears to be working. Time to dig a little deeper. After much profanity was spewed, I stumbled upon a breakthrough. The code only looked like it was working. What was really happening is that there was an exception being thrown in the background thread that I never saw. Apparently, the key call was the one to PropertyChanged. If PropertyChanged is not called on the UI thread, the UI thread ignores the call. Actually, it throws an exception and the background thread silently crashes. Of course, you'll never see this unless you're looking REALLY carefully. This seemed to be a simple problem. I just need to marshal this to the UI thread. Unfortunately, this object has no knowledge of this mythical UI Thread in which we speak. So, I had to pull the UI Thread out of thin air. Let's change our PropertyChanged call to look this. public event PropertyChangedEventHandler PropertyChanged; protected void NotifyPropertyChanged( [CallerMemberName] string p_PropertyName = null ) { if( PropertyChanged != null ) Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync( Windows.UI.Core.CoreDispatcherPriority.Normal, new Windows.UI.Core.DispatchedHandler( () => { PropertyChanged( this, new PropertyChangedEventArgs( p_PropertyName ) ); } ) ); } Now, we raised our notification on the UI thread. Everything is fine, people are happy, and the world moves on. You may have noticed that I didn't await my call to the dispatcher. This was intentional. If I am trying to update a slew of sprites, I don't want thread being hung while I wait my turn. Thus, I send the message and move on. It is worth nothing that this is NOT the most efficient way to do this for game programming. We'll get to that in another blog post. However, it is perfectly acceptable for a business app that is running a background task that would like to notify the UI thread of progress on a periodic basis. It is worth noting that this code was written for a Windows Store App. You can do the same thing with WP8 and WPF. The call to the marshaler changes, but it is the same idea.

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  • What is Happening vs. What is Interesting

    - by Geertjan
    Devoxx 2011 was yet another confirmation that all development everywhere is either on the web or on mobile phones. Whether you looked at the conference schedule or attended sessions or talked to speakers at any point at all, it was very clear that no development whatsoever is done anymore on the desktop. In fact, that's something Tim Bray himself told me to my face at the speakers dinner. No new developments of any kind are happening on the desktop. Everyone who is currently on the desktop is working overtime to move all of their applications to the web. They're probably also creating a small subset of their application on an Android tablet, with an even smaller subset on their Android phone. Then you scratch that monolithic surface and find some interesting results. Without naming any names, I asked one of these prominent "ah, forget about the desktop" people at the Devoxx speakers dinner (and I have a witness): "Yes, the desktop is dead, but what about air traffic control, stock trading, oil analysis, risk management applications? In fact, what about any back office application that needs to be usable across all operating systems? Here there is no concern whatsoever with 100% accessibility which is, after all, the only thing that the web has over the desktop, (except when there's a network failure, of course, or when you find yourself in the 3/4 of the world where there's bandwidth problems)? There are 1000's of hidden applications out there that have processing requirements, security requirements, and the requirement that they'll be available even when the network is down or even completely unavailable. Isn't that a valid use case and aren't there 1000's of applications that fall into this so-called niche category? Are you not, in fact, confusing consumer applications, which are increasingly web-based and mobile-based, with high-end corporate applications, which typically need to do massive processing, of one kind or another, for which the web and mobile worlds are completely unsuited?" And you will not believe what the reply to the above question was. (Again, I have a witness to this discussion.) But here it is: "Yes. But those applications are not interesting. I do not want to spend any of my time or work in any way on those applications. They are boring." I'm sad to say that the leaders of the software development community, including those in the Java world, either share the above opinion or are led by it. Because they find something that is not new to be boring, they move on to what is interesting and start talking like the supposedly-boring developments don't even exist. (Kind of like a rapper pretending classical music doesn't exist.) Time and time again I find myself giving Java desktop development courses (at companies, i.e., not hobbyists, or students, but companies, i.e., the places where dollars are earned), where developers say to me: "The course you're giving about creating cross-platform, loosely coupled, and highly cohesive applications is really useful to us. Why do we never find information about this topic at conferences? Why can we never attend a session at a conference where the story about pluggable cross-platform Java is told? Why do we get the impression that we are uncool because we're not on the web and because we're not on a mobile phone, while the reason for that is because we're creating $1000,000 simulation software which has nothing to gain from being on the web or on the mobile phone?" And then I say: "Because nobody knows you exist. Because you're not submitting abstracts to conferences about your very interesting use cases. And because conferences tend to focus on what is new, which tends to be web related (especially HTML 5) or mobile related (especially Android). Because you're not taking the responsibility on yourself to tell the real stories about the real applications being developed all the time and every day. Because you yourself think your work is boring, while in fact it is fascinating. Because desktop developers are working from 9 to 5 on the desktop, in secure environments, such as banks and defense, where you can't spend time, nor have the interest in, blogging your latest tip or trick, as opposed to web developers, who tend to spend a lot of time on the web anyway and are therefore much more inclined to create buzz about the kind of work they're doing." So, next time you look at a conference program and wonder why there's no stories about large desktop development projects in the program, here's the short answer: "No one is going to put those items on the program until you start submitting those kinds of sessions. And until you start blogging. Until you start creating the buzz that the web developers have been creating around their work for the past 10 years or so. And, yes, indeed, programmers get the conference they deserve." And what about Tim Bray? Ask yourself, as Google's lead web technology evangelist, how many desktop developers do you think he talks to and, more generally, what his frame of reference is and what, clearly, he considers to be most interesting.

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  • Windows Phone 8 Announcement

    - by Tim Murphy
    As if the Surface announcement on Monday wasn’t exciting enough, today Microsoft announce that Windows Phone 8 will be coming this fall.  That itself is great news, but the features coming were like confetti flying in all different directions.  Given this speed I couldn’t capture every feature they covered.  A summary of what I did capture is listed below starting with their eight main features. Common Core The first thing that they covered is that Windows Phone 8 will share a core OS with Windows 8.  It will also run natively on multiple cores.  They mentioned that they have run it on up to 64 cores to this point.  The phones as you might expect will at least start as dual core.  If you remember there were metrics saying that Windows Phone 7 performed operations faster on a single core than other platforms did with dual cores.  The metrics they showed here indicate that Windows Phone 8 runs faster on comparable dual core hardware than other platforms. New Screen Resolutions Screen resolution has never been an issue for me, but it has been a criticism of Windows Phone 7 in the media.  Windows Phone 8 will supports three screen resolutions: WVGA 800 x 480, WXGA 1280 x 768, and 720 1280x720.  Hopefully this makes pixel counters a little happier. MicroSD Support This was one of my pet peeves when I got my Samsung Focus. With Windows Phone 8 the operating system will support adding MicroSD cards after initial setup.  Of course this is dependent on the hardware company on implementing it, but I think we have seen that even feature phone manufacturers have not had a problem supporting this in the past. NFC NFC has been an anticipated feature for some time.  What Microsoft showed today included the fact that they didn’t just want it to be for the phone.  There is cross platform NFC functionality between Windows Phone 8 and Windows 8.  The demos , while possibly a bit fanciful, showed would could be achieved even in a retail environment.  We are getting closer and closer to a Minority Report world with these technologies. Wallet Windows Phone 8 isn’t the first platform to have a wallet concept.  What they have done to differentiate themselves is to make it sot that it is not dependent on a SIM type chip like other platforms.  They have also expanded the concept beyond just banks to other types of credits such as airline miles. Nokia Mapping People have been envious of the Lumia phones having the Nokia mapping software.  Now all Windows Phone 8 devices will use NavTeq data and will have the capability to run in an offline fashion.  This is a major step forward from the Bing “touch for the next turn” maps. IT Administration The lack of features for enterprise administration and deployment was a complaint even before the Windows Phone 7 was released.  With the Windows Phone 8 release such features as Bitlocker and Secure boot will be baked into the OS. We will also have the ability to privately sign and distribute applications. Changing Start Screen Joe Belfiore made a big deal about this aspect of the new release.  Users will have more color themes available to them and the live tiles will be highly customizable. You will have the ability to resize and organize the tiles in a more dynamic way.  This allows for less important tiles or ones with less information to be made smaller.  And There Is More So what other tidbits came out of the presentation?  Later this summer the API for WP8 will be available.  There will be developer events coming to a city near you.  Another announcement of interest to developers is the ability to write applications at a native code level.  This is a boon for game developers and those who need highly efficient applications. As a topper on the cake there was mention of in app payment. On the consumer side we also found out that all updates will be available over the air.  Along with this came the fact that Microsoft will support all devices with updates for at least 18 month and you will be able to subscribe for early updates.  Update coming for Windows Phone 7.5 customers to WP7.8.  The main enhancement will be the new live tile features.  The big bonus is that the update will bypass the carriers.  I would assume though that you will be brought up to date with all previous patches that your carrier may not have released. There is so much more, but that is enough for one post.  Needless to say, EXCITING! del.icio.us Tags: Windows Phone 8,WP8,Windows Phone 7,WP7,Announcements,Microsoft

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  • What Counts for A DBA - Logic

    - by drsql
    "There are 10 kinds of people in the world. Those who will always wonder why there are only two items in my list and those who will figured it out the first time they saw this very old joke."  Those readers who will give up immediately and get frustrated with me for not explaining it to them are not likely going to be great technical professionals of any sort, much less a programmer or administrator who will be constantly dealing with the common failures that make up a DBA's day.  Many of these people will stare at this like a dog staring at a traffic signal and still have no more idea of how to decipher the riddle. Without explanation they will give up, call the joke "stupid" and, feeling quite superior, walk away indignantly to their job likely flipping patties of meat-by-product. As a data professional or any programmer who has strayed  to this very data-oriented blog, you would, if you are worth your weight in air, either have recognized immediately what was going on, or felt a bit ignorant.  Your friends are chuckling over the joke, but why is it funny? Unfortunately you left your smartphone at home on the dresser because you were up late last night programming and were running late to work (again), so you will either have to fake a laugh or figure it out.  Digging through the joke, you figure out that the word "two" is the most important part, since initially the joke mentioned 10. Hmm, why did they spell out two, but not ten? Maybe 10 could be interpreted a different way?  As a DBA, this sort of logic comes into play every day, and sometimes it doesn't involve nerdy riddles or Star Wars folklore.  When you turn on your computer and get the dreaded blue screen of death, you don't immediately cry to the help desk and sit on your thumbs and whine about not being able to work. Do that and your co-workers will question your nerd-hood; I know I certainly would. You figure out the problem, and when you have it narrowed down, you call the help desk and tell them what the problem is, usually having to explain that yes, you did in fact try to reboot before calling.  Of course, sometimes humility does come in to play when you reach the end of your abilities, but the ‘end of abilities’ is not something any of us recognize readily. It is handy to have the ability to use logic to solve uncommon problems: It becomes especially useful when you are trying to solve a data-related problem such as a query performance issue, and the way that you approach things will tell your coworkers a great deal about your abilities.  The novice is likely to immediately take the approach of  trying to add more indexes or blaming the hardware. As you become more and more experienced, it becomes increasingly obvious that performance issues are a very complex topic. A query may be slow for a myriad of reasons, from concurrency issues, a poor query plan because of a parameter value (like parameter sniffing,) poor coding standards, or just because it is a complex query that is going to be slow sometimes. Some queries that you will deal with may have twenty joins and hundreds of search criteria, and it can take a lot of thought to determine what is going on.  You can usually figure out the problem to almost any query by using basic knowledge of how joins and queries work, together with the help of such things as the query plan, profiler or monitoring tools.  It is not unlikely that it can take a full day’s work to understand some queries, breaking them down into smaller queries to find a very tiny problem. Not every time will you actually find the problem, and it is part of the process to occasionally admit that the problem is random, and everything works fine now.  Sometimes, it is necessary to realize that a problem is outside of your current knowledge, and admit temporary defeat: You can, at least, narrow down the source of the problem by looking logically at all of the possible solutions. By doing this, you can satisfy your curiosity and learn more about what the actual problem was. For example, in the joke, had you never been exposed to the concept of binary numbers, there is no way you could have known that binary - 10 = decimal - 2, but you could have logically come to the conclusion that 10 must not mean ten in the context of the joke, and at that point you are that much closer to getting the joke and at least won't feel so ignorant.

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  • Disable Windows 8 edge gestures/hot corners for multi-touch applications while running in full screen

    - by Bondye
    I have a full screen AS3 game maby with Adobe AIR that runs in Windows 7. In this game it may not be easy to exit (think about kiosk mode, only exit by pressing esc and enter a password). Now I want this game to run in Windows 8. The game is working like expected but the anoying things are these edge gestures/hot corners (left, top, right, bottom) and the shortcuts. I've read articles but none helped me. People talk about registery edits, but I dont get this working + the user needs to restart his/hers computer. I want to open my game, turn off gestures/hot corners and when the game closes the gestures/hot corners need to come back available again. I have seen some applications doing the same what I want to accomplish. I found this so I am able to detect the gestures. But how to ignore they're actions? I also read ASUS Smart Gestures but this is for the touch-pad. And I have tried Classic Shell but I need to disable the edge gestures/hot corners without such programs, just on-the-fly. I also found this but I don't know how to implement this. HRESULT SetTouchDisableProperty(HWND hwnd, BOOL fDisableTouch) { IPropertyStore* pPropStore; HRESULT hrReturnValue = SHGetPropertyStoreForWindow(hwnd, IID_PPV_ARGS(&pPropStore)); if (SUCCEEDED(hrReturnValue)) { PROPVARIANT var; var.vt = VT_BOOL; var.boolVal = fDisableTouch ? VARIANT_TRUE : VARIANT_FALSE; hrReturnValue = pPropStore->SetValue(PKEY_EdgeGesture_DisableTouchWhenFullscreen, var); pPropStore->Release(); } return hrReturnValue; } Does anyone know how I can do this? Or point me into the right direction? I have tried some in C# and C++, but I aint a skilled C#/C++ developer. Also the game is made in AS3 so it will be hard to implement this in C#/C++. I work on the Lenovo aio (All in one) with Windows 8.

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  • Read array dump output and generates the correspondent XML file

    - by Christian
    Hi, The text below is the dump of a multidimensional array, dumped by the var_dump() PHP function. I need a Java function that reads a file with a content like this (attached) and returns it in XML. For a reference, in site http://pear.php.net/package/Var_Dump/ you can find the code (in PHP) that generates dumps in XML, so all neeeded logic is there (I think). I will be waiting for your feedback. Regards, Christian array(1) { ["Processo"]= array(60) { ["Sistema"]= string(6) "E-PROC" ["UF"]= string(2) "RS" ["DataConsulta"]= string(19) "11/05/2010 17:59:17" ["Processo"]= string(20) "50000135320104047100" ["NumRegistJudici"]= string(20) "50000135320104047100" ["IdProcesso"]= string(30) "711262958983115560390000000001" ["SeqProcesso"]= string(1) "1" ["Autuado"]= string(19) "08/01/2010 12:04:47" ["StatusProcesso"]= string(1) "M" ["ComSituacaoProcesso"]= string(2) "00" ["Situacao"]= string(9) "MOVIMENTO" ["IdClasseJudicial"]= string(10) "0000000112" ["DesClasse"]= string(18) "INQUÉRITO POLICIAL" ["CodClasse"]= string(6) "000120" ["SigClasse"]= string(3) "INQ" ["DesTipoInquerito"]= string(0) "" ["CodCompetencia"]= string(2) "21" ["IdLocalidadeJudicial"]= string(4) "7150" ["ClasseSigAutor"]= string(5) "AUTOR" ["ClasseDesAutor"]= string(5) "AUTOR" ["ClasseSigReu"]= string(7) "INDICDO" ["ClasseDesReu"]= string(9) "INDICIADO" ["ClasseCodReu"]= string(2) "64" ["TipoAcao"]= string(8) "Criminal" ["TipoProcessoJudicial"]= string(1) "2" ["CodAssuntoPrincipal"]= string(6) "051801" ["CodLocalidadeJudicial"]= string(2) "00" ["IdAssuntoPrincipal"]= string(4) "1504" ["IdLocalizadorOrgaoPrincipal"]= string(30) "711264420823128430420000000001" ["ChaveConsulta"]= string(12) "513009403710" ["NumAdministrativo"]= NULL ["Magistrado"]= string(28) "RICARDO HUMBERTO SILVA BORNE" ["IdOrgaoJuizo"]= string(9) "710000085" ["IdOrgaoJuizoOriginario"]= string(9) "710000085" ["DesOrgaoJuizo"]= string(45) "JUÍZO FED. DA 02A VF CRIMINAL DE PORTO ALEGRE" ["SigOrgaoJuizo"]= string(10) "RSPOACR02F" ["CodOrgaoJuizo"]= string(9) "RS0000085" ["IdOrgaoSecretaria"]= string(9) "710000084" ["DesOrgaoSecretaria"]= string(31) "02a VF CRIMINAL DE PORTO ALEGRE" ["SigOrgaoSecretaria"]= string(9) "RSPOACR02" ["CodOrgaoSecretaria"]= string(9) "RS0000084" ["IdSigilo"]= string(1) "0" ["IdUsuario"]= string(30) "711262951173995330420000000001" ["DesSigilo"]= string(10) "Sem Sigilo" ["Localizador"]= string(25) "EM TRÂMITE ENTRE PF E MPF" ["TotalCda"]= int(0) ["DesIpl"]= string(8) "012/2010" ["Assunto"]= array(1) { [0]= array(4) { ["IdAssuntoJudicial"]= string(4) "1504" ["SeqAssunto"]= string(1) "1" ["CodAssunto"]= string(6) "051801" ["DesAssunto"]= string(84) "Moeda Falsa / Assimilados (arts. 289 e parágrafos e 290), Crimes contra a Fé Pública" } } ["ParteAutor"]= array(1) { [0]= array(12) { ["IdPessoa"]= string(30) "771230778800100040000000000508" ["TipoPessoa"]= string(3) "ENT" ["Nome"]= string(15) "POLÍCIA FEDERAL" ["Identificacao"]= string(14) "79621439000191" ["SinPartePrincipal"]= string(1) "S" ["IdProcessoParte"]= string(30) "711262958983115560390000000002" ["IdProcessoParteAtributo"]= NULL ["IdRepresentacao"]= NULL ["TipoRepresentacao"]= NULL ["AtributosProcessoParte"]= NULL ["Relacao"]= NULL ["Procurador"]= array(6) { [0]= array(4) { ["Nome"]= string(25) "SOLON RAMOS CARDOSO FILHO" ["Sigla"]= string(13) "cor-sr-dpf-rs" ["IdUsuarioProcurador"]= string(30) "711262893271855450420000000001" ["TipoUsuario"]= string(3) "CPF" } [1]= array(4) { ["Nome"]= string(18) "LUCIANA IOP CECHIN" ["Sigla"]= string(11) "luciana.lic" ["IdUsuarioProcurador"]= string(30) "711262946806708880420000000001" ["TipoUsuario"]= string(3) "CPF" } [2]= array(4) { ["Nome"]= string(31) "ALEXANDRE DA SILVEIRA ISBARROLA" ["Sigla"]= string(15) "drcor-sr-dpf-rs" ["IdUsuarioProcurador"]= string(30) "711262949451860560420000000001" ["TipoUsuario"]= string(3) "CPF" } [3]= array(4) { ["Nome"]= string(24) "JUCÉLIA TERESINHA PISONI" ["Sigla"]= string(11) "jucelia.jtp" ["IdUsuarioProcurador"]= string(30) "711262950492275450420000000001" ["TipoUsuario"]= string(3) "CPF" } [4]= array(4) { ["Nome"]= string(32) "MARCOS ANTONIO SIQUEIRA PICININI" ["Sigla"]= string(13) "picinini.masp" ["IdUsuarioProcurador"]= string(30) "711262951173995330420000000001" ["TipoUsuario"]= string(3) "APF" } [5]= array(4) { ["Nome"]= string(20) "PRISCILLA BURLACENKO" ["Sigla"]= string(12) "priscilla.pb" ["IdUsuarioProcurador"]= string(30) "711262955631630740420000000001" ["TipoUsuario"]= string(3) "DPF" } } } } ["ParteReu"]= array(1) { [0]= array(11) { ["IdPessoa"]= string(30) "711262958983115560390000000001" ["TipoPessoa"]= string(2) "PF" ["Nome"]= string(8) "A APURAR" ["Identificacao"]= NULL ["SinPartePrincipal"]= string(1) "S" ["IdProcessoParte"]= string(30) "711262958983115560390000000001" ["IdProcessoParteAtributo"]= NULL ["IdRepresentacao"]= NULL ["TipoRepresentacao"]= NULL ["AtributosProcessoParte"]= NULL ["Relacao"]= NULL } } ["OutraParte"]= array(1) { [0]= array(10) { ["Nome"]= string(26) "MINISTÉRIO PÚBLICO FEDERAL" ["CodTipoParte"]= string(3) "114" ["DesTipoParte"]= string(3) "MPF" ["SinPolo"]= string(1) "N" ["Identificacao"]= string(13) "3636198000192" ["SinPartePrincipal"]= string(1) "N" ["IdProcessoParte"]= string(30) "711262958983115560390000000003" ["IdPessoa"]= string(30) "771230778800100040000000000217" ["TipoPessoa"]= string(3) "ENT" ["Procurador"]= array(1) { [0]= array(4) { ["Nome"]= string(25) "MARIA VALESCA DE MESQUITA" ["IdUsuarioProcurador"]= string(30) "711265220162198740420000000001" ["TipoUsuario"]= string(1) "P" ["Sigla"]= string(5) "pr528" } } } } ["DadoComplementar"]= array(6) { [0]= array(5) { ["DesDadoComplem"]= string(21) "Antecipação de Tutela" ["ValorDadoComplem"]= string(13) "Não Requerida" ["IdDadoComplementar"]= string(1) "1" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000003" ["IdDadoComplementarValor"]= string(1) "4" } [1]= array(5) { ["DesDadoComplem"]= string(16) "Justiça Gratuita" ["ValorDadoComplem"]= string(13) "Não Requerida" ["IdDadoComplementar"]= string(1) "4" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000001" ["IdDadoComplementarValor"]= string(1) "3" } [2]= array(5) { ["DesDadoComplem"]= string(15) "Petição Urgente" ["ValorDadoComplem"]= string(3) "Não" ["IdDadoComplementar"]= string(1) "5" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000004" ["IdDadoComplementarValor"]= string(1) "2" } [3]= array(5) { ["DesDadoComplem"]= string(22) "Prioridade Atendimento" ["ValorDadoComplem"]= string(3) "Não" ["IdDadoComplementar"]= string(1) "2" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000006" ["IdDadoComplementarValor"]= string(1) "2" } [4]= array(5) { ["DesDadoComplem"]= string(9) "Réu Preso" ["ValorDadoComplem"]= string(3) "Não" ["IdDadoComplementar"]= string(1) "6" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000002" ["IdDadoComplementarValor"]= string(1) "2" } [5]= array(5) { ["DesDadoComplem"]= string(24) "Vista Ministério Público" ["ValorDadoComplem"]= string(3) "Sim" ["IdDadoComplementar"]= string(1) "3" ["NumIdProcessoDadoComplem"]= string(30) "711262958983115560390000000005" ["IdDadoComplementarValor"]= string(1) "1" } } ["SemPrazoAbrir"]= bool(true) ["Evento"]= array(8) { [0]= array(18) { ["IdProcessoEvento"]= string(30) "711269271039215440420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(3) "166" ["SeqEvento"]= string(1) "8" ["DataHora"]= string(19) "22/03/2010 12:19:16" ["SinExibeDesEvento"]= string(1) "S" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= string(7) "90 DIAS" ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(37) "PETIÇÃO PROTOCOLADA JUNTADA - 90 DIAS" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(7) "ap18785" ["idUsuario"]= string(30) "711263330517182580420000000001" ["DesPeticao"]= string(25) "DILAÇÃO DE PRAZO DEFERIDA" ["DescricaoCompleta"]= string(75) "PETIÇÃO PROTOCOLADA JUNTADA - 90 DIAS - DILAÇÃO DE PRAZO DEFERIDA - 90 DIAS" } [1]= array(18) { ["IdProcessoEvento"]= string(30) "711269032501923580420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(3) "166" ["SeqEvento"]= string(1) "7" ["DataHora"]= string(19) "19/03/2010 18:04:59" ["SinExibeDesEvento"]= string(1) "S" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= string(7) "90 DIAS" ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(37) "PETIÇÃO PROTOCOLADA JUNTADA - 90 DIAS" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(5) "pr700" ["idUsuario"]= string(30) "711262976146980920420000000002" ["DesPeticao"]= string(25) "DILAÇÃO DE PRAZO DEFERIDA" ["DescricaoCompleta"]= string(75) "PETIÇÃO PROTOCOLADA JUNTADA - 90 DIAS - DILAÇÃO DE PRAZO DEFERIDA - 90 DIAS" } [2]= array(19) { ["IdProcessoEvento"]= string(30) "711268077089625240420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(3) "165" ["SeqEvento"]= string(1) "6" ["DataHora"]= string(19) "08/03/2010 16:55:48" ["SinExibeDesEvento"]= string(1) "N" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(13) "picinini.masp" ["idUsuario"]= string(30) "711262951173995330420000000001" ["Documento"]= array(2) { [0]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711268077089625240420000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(4) "CERT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [1]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711268077089625240420000000002" ["SeqDocumento"]= string(1) "2" ["SigTipoDocumento"]= string(4) "DESP" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(26) "PEDIDO DE DILAÇÃO DE PRAZO" ["DescricaoCompleta"]= string(26) "PEDIDO DE DILAÇÃO DE PRAZO" } [3]= array(19) { ["IdProcessoEvento"]= string(30) "711267732906972600420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(2) "52" ["SeqEvento"]= string(1) "5" ["DataHora"]= string(19) "04/03/2010 17:20:29" ["SinExibeDesEvento"]= string(1) "N" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(5) "pr700" ["idUsuario"]= string(30) "711262976146980920420000000002" ["Documento"]= array(1) { [0]= array(6) { ["IdUsuario"]= string(30) "711262976146980920420000000002" ["IdDocumento"]= string(30) "711267732906972600420000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(3) "PET" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(7) "PETIÇÃO" ["DescricaoCompleta"]= string(7) "PETIÇÃO" } [4]= array(19) { ["IdProcessoEvento"]= string(30) "711265889365256290420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(3) "165" ["SeqEvento"]= string(1) "4" ["DataHora"]= string(19) "11/02/2010 09:59:04" ["SinExibeDesEvento"]= string(1) "N" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(13) "picinini.masp" ["idUsuario"]= string(30) "711262951173995330420000000001" ["Documento"]= array(2) { [0]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711265222866995860420000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(4) "PORT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [1]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711265222866995860420000000002" ["SeqDocumento"]= string(1) "2" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(26) "PEDIDO DE DILAÇÃO DE PRAZO" ["DescricaoCompleta"]= string(26) "PEDIDO DE DILAÇÃO DE PRAZO" } [5]= array(19) { ["IdProcessoEvento"]= string(30) "711263991150788270420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(2) "52" ["SeqEvento"]= string(1) "3" ["DataHora"]= string(19) "20/01/2010 10:50:05" ["SinExibeDesEvento"]= string(1) "N" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(13) "picinini.masp" ["idUsuario"]= string(30) "711262951173995330420000000001" ["Documento"]= array(4) { [0]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263991150788270420000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(4) "DECL" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [1]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263991150788270420000000002" ["SeqDocumento"]= string(1) "2" ["SigTipoDocumento"]= string(4) "DECL" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [2]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263991150788270420000000003" ["SeqDocumento"]= string(1) "3" ["SigTipoDocumento"]= string(4) "DECL" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [3]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263991150788270420000000004" ["SeqDocumento"]= string(1) "4" ["SigTipoDocumento"]= string(4) "DECL" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(7) "PETIÇÃO" ["DescricaoCompleta"]= string(7) "PETIÇÃO" } [6]= array(19) { ["IdProcessoEvento"]= string(30) "711263955058688620420000000001" ["IdEvento"]= string(3) "228" ["IdTipoPeticaoJudicial"]= string(2) "52" ["SeqEvento"]= string(1) "2" ["DataHora"]= string(19) "20/01/2010 00:40:39" ["SinExibeDesEvento"]= string(1) "N" ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "4" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["CodEvento"]= string(10) "0000000852" ["DesEvento"]= string(27) "PETIÇÃO PROTOCOLADA JUNTADA" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(13) "picinini.masp" ["idUsuario"]= string(30) "711262951173995330420000000001" ["Documento"]= array(6) { [0]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [1]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000002" ["SeqDocumento"]= string(1) "2" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [2]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000003" ["SeqDocumento"]= string(1) "3" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [3]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000004" ["SeqDocumento"]= string(1) "4" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [4]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000005" ["SeqDocumento"]= string(1) "5" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [5]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711263229632249660420000000006" ["SeqDocumento"]= string(1) "6" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(7) "PETIÇÃO" ["DescricaoCompleta"]= string(7) "PETIÇÃO" } [7]= array(19) { ["IdProcessoEvento"]= string(30) "711262958983115560390000000001" ["IdEvento"]= string(3) "430" ["IdTipoPeticaoJudicial"]= NULL ["SeqEvento"]= string(1) "1" ["DataHora"]= string(19) "08/01/2010 12:04:47" ["SinExibeDesEvento"]= NULL ["SinUsuarioInterno"]= string(1) "N" ["IdGrupoEvento"]= string(1) "0" ["SinVisualizaDocumentoExterno"]= string(1) "N" ["Complemento"]= NULL ["DesEventoSemComplemento"]= string(56) "Distribuição/Atribuição Ordinária por sorteio eletrônico" ["CodEvento"]= string(6) "030101" ["DesEvento"]= string(56) "Distribuição/Atribuição Ordinária por sorteio eletrônico" ["DesAlternativaEvento"]= NULL ["Usuario"]= string(13) "picinini.masp" ["idUsuario"]= string(30) "711262951173995330420000000001" ["Documento"]= array(4) { [0]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711262956008922510390000000001" ["SeqDocumento"]= string(1) "1" ["SigTipoDocumento"]= string(4) "PORT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [1]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711262956008922510390000000002" ["SeqDocumento"]= string(1) "2" ["SigTipoDocumento"]= string(4) "OFIC" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [2]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711262956008922510390000000003" ["SeqDocumento"]= string(1) "3" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } [3]= array(6) { ["IdUsuario"]= string(30) "711262951173995330420000000001" ["IdDocumento"]= string(30) "711262956008922510390000000004" ["SeqDocumento"]= string(1) "4" ["SigTipoDocumento"]= string(3) "OUT" ["IdSigilo"]= string(1) "0" ["DesSigilo"]= string(10) "Sem Sigilo" } } ["DesPeticao"]= string(56) "Distribuição/Atribuição Ordinária por sorteio eletrônico" ["DescricaoCompleta"]= string(56) "Distribuição/Atribuição Ordinária por sorteio eletrônico" } } ["ValCausa"]= string(4) "0.00" ["OrgaoJul"]= string(45) "JUÍZO FED. DA 02A VF CRIMINAL DE PORTO ALEGRE" ["CodOrgaoJul"]= string(9) "RS0000085" ["OrgaoColegiado"]= NULL ["CodOrgaoColegiado"]= NULL ["CodOrgaoColegiadoSecretaria"]= NULL } }

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  • Using PHP substr() and strip_tags() while retaining formatting and without breaking HTML

    - by Peter
    I have various HTML strings to cut to 100 characters (of the stripped content, not the original) without stripping tags and without breaking HTML. Original HTML string (288 characters): $content = "<div>With a <span class='spanClass'>span over here</span> and a <div class='divClass'>nested div over <div class='nestedDivClass'>there</div> </div> and a lot of other nested <strong><em>texts</em> and tags in the air <span>everywhere</span>, it's a HTML taggy kind of day.</strong></div>"; Standard trim: Trim to 100 characters and HTML breaks, stripped content comes to ~40 characters: $content = substr($content, 0, 100)."..."; /* output: <div>With a <span class='spanClass'>span over here</span> and a <div class='divClass'>nested div ove... */ Stripped HTML: Outputs correct character count but obviously looses formatting: $content = substr(strip_tags($content)), 0, 100)."..."; /* output: With a span over here and a nested div over there and a lot of other nested texts and tags in the ai... */ Partial solution: using HTML Tidy or purifier to close off tags outputs clean HTML but 100 characters of HTML not displayed content. $content = substr($content, 0, 100)."..."; $tidy = new tidy; $tidy->parseString($content); $tidy->cleanRepair(); /* output: <div>With a <span class='spanClass'>span over here</span> and a <div class='divClass'>nested div ove</div></div>... */ Challenge: To output clean HTML and n characters (excluding character count of HTML elements): $content = cutHTML($content, 100); /* output: <div>With a <span class='spanClass'>span over here</span> and a <div class='divClass'>nested div over <div class='nestedDivClass'>there</div> </div> and a lot of other nested <strong><em>texts</em> and tags in the ai</strong></div>..."; Similar Questions How to clip HTML fragments without breaking up tags Cutting HTML strings without breaking HTML tags

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  • 2d trajectory planning of a spaceship with physics.

    - by egarcia
    I'm implementing a 2D game with ships in space. In order to do it, I'm using LÖVE, which wraps Box2D with Lua. But I believe that my question can be answered by anyone with a greater understanding of physics than myself - so pseudo code is accepted as a response. My problem is that I don't know how to move my spaceships properly on a 2D physics-enabled world. More concretely: A ship of mass m is located at an initial position {x, y}. It has an initial velocity vector of {vx, vy} (can be {0,0}). The objective is a point in {xo,yo}. The ship has to reach the objective having a velocity of {vxo, vyo} (or near it), following the shortest trajectory. There's a function called update(dt) that is called frequently (i.e. 30 times per second). On this function, the ship can modify its position and trajectory, by applying "impulses" to itself. The magnitude of the impulses is binary: you can either apply it in a given direction, or not to apply it at all). In code, it looks like this: def Ship:update(dt) m = self:getMass() x,y = self:getPosition() vx,vy = self.getLinearVelocity() xo,yo = self:getTargetPosition() vxo,vyo = self:getTargetVelocity() thrust = self:getThrust() if(???) angle = ??? self:applyImpulse(math.sin(angle)*thrust, math.cos(angle)*thrust)) end end The first ??? is there to indicate that in some occasions (I guess) it would be better to "not to impulse" and leave the ship "drift". The second ??? part consists on how to calculate the impulse angle on a given dt. We are in space, so we can ignore things like air friction. Although it would be very nice, I'm not looking for someone to code this for me; I put the code there so my problem is clearly understood. What I need is an strategy - a way of attacking this. I know some basic physics, but I'm no expert. For example, does this problem have a name? That sort of thing. Thanks a lot.

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  • ANTLR: using stringTemplate

    - by Kevin Won
    (I'm a Noob with Antlr)... I'm having difficulties getting my grammar with StringTemplates. Basically I'm trying to write a little DSL. I can get my grammar the way I want (it parses correctly), but I can't get the generation of the target code to work with templates. So here's a snippet of my grammar: grammar Pfig; options { output=template; language=CSharp2; } conf : globalName ; globalName : 'GlobalName:' ID -> localConf(name ={$ID.text}) ; I simplified it quite a bit just to get the essence across. Basically, when the lex/parse comes across `GlobalName: Foo' I want it to spit out text based on the StringTemplate called 'localConf'. Super straightforward. So now, let's fire up the parser in a test app and have it process an input file. // C# processing a file with the lex/parser. // the 'app.pfig' file just has one line that reads 'GlobalName: Bla' using (FileStream fs = File.OpenRead("c:\\app.pfig")) { PfigParser parser = new PfigParser(new CommonTokenStream( new PfigLexer(new ANTLRInputStream(fs)))); using (TextReader tr = File.OpenText("./Pfig.stg")) { parser.TemplateLib = new StringTemplateGroup(tr); } var parseResult = parser.conf(); string code = parseResult.Template.ToString(); // Fail: template is null } I can step through the parser code and see that it correctly identifies my text and applies the stringTemplate correctly. The problem is that since this 'globalName' rule is a subrule of 'conf' it doesn't get executed directly--the method just finds it and returns. But the calling 'Conf' method does not keep the return value from the subrule--it goes to thin air. This means that my resultant template on the last line is null. If I get rid of the 'conf' rule in my grammar and call 'globalName' directly, it will work (since it's the only rule on the stack). But I obviously want more than one rule. I've generated the parser in Java and it does the same thing: // antlr generated parser code public PfigParser.conf_return conf() // throws RecognitionException [1] { PfigParser.conf_return retval = new PfigParser.conf_return(); try { { PushFollow(FOLLOW_globalName_in_conf30); globalName(); // <- it calls globalName() but doesn't keep the return. state.followingStackPointer--; } retval.Stop = input.LT(-1); } // snip It's simple to see I don't get some basic concept with how the Template approach is supposed to work with Antlr. I'm quite sure this is my problem but I'm a loggerheads to know what I'm doing wrong... the examples I've seen don't really show real-world template emission of code.

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  • Any software for pattern-matching and -rewriting source code?

    - by Steven A. Lowe
    I have some old software (in a language that's not dead but is dead to me ;-)) that implements a basic pattern-matching and -rewriting system for source code. I am considering resurrecting this code, translating it into a modern language, and open-sourcing the project as a refactoring power-tool. Before I go much further, I want to know if anything like this exists already (my google-fu is fanning air on this tonight). Here's how it works: the pattern-matching part matches source-code patterns spanning multiple lines of code using a template with binding variables, the pattern-rewriting part uses a template to rewrite the matched code, inserting the contents of the bound variables from the matching template matching and rewriting templates are associated (1:1) by a simple (unconditional) rewrite rule the software operates on the abstract syntax tree (AST) of the input application, and outputs a modified AST which can then be regenerated into new source code for example, suppose we find a bunch of while-loops that really should be for-loops. The following template will match the while-loop pattern: Template oldLoopPtrn int @cnt@ = 0; while (@cnt@ < @max@) { … @body@ ++@cnt@; } End_Template while the following template will specify the output rewrite pattern: Template newLoopPtrn for(int @cnt@ = 0; @cnt@ < @max@; @cnt@++) { @body@ } End_Template and a simple rule to associate them Rule oldLoopPtrn --> newLoopPtrn so code that looks like this int i=0; while(i<arrlen) { printf("element %d: %f\n",i,arr[i]); ++i; } gets automatically rewritten to look like this for(int i = 0; i < arrlen; i++) { printf("element %d: %f\n",i,arr[i]); } The closest thing I've seen like this is some of the code-refactoring tools, but they seem to be geared towards interactive rewriting of selected snippets, not wholesale automated changes. I believe that this kind of tool could supercharge refactoring, and would work on multiple languages (even HTML/CSS). I also believe that converting and polishing the code base would be a huge project that I simply cannot do alone in any reasonable amount of time. So, anything like this out there already? If not, any obvious features (besides rewrite-rule conditions) to consider? EDIT: The one feature of this system that I like very much is that the template patterns are fairly obvious and easy to read because they're written in the same language as the target source code, not in some esoteric mutated regex/BNF format.

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  • How to remove lowercase sentence fragments from text?

    - by Aaron
    Hello: I'm tyring to remove lowercase sentence fragments from standard text files using regular expresions or a simple Perl oneliner. These are commonly referred to as speech or attribution tags, for example - he said, she said, etc. This example shows before and after using manual deletion: Original: "Ah, that's perfectly true!" exclaimed Alyosha. "Oh, do leave off playing the fool! Some idiot comes in, and you put us to shame!" cried the girl by the window, suddenly turning to her father with a disdainful and contemptuous air. "Wait a little, Varvara!" cried her father, speaking peremptorily but looking at them quite approvingly. "That's her character," he said, addressing Alyosha again. "Where have you been?" he asked him. "I think," he said, "I've forgotten something... my handkerchief, I think.... Well, even if I've not forgotten anything, let me stay a little." He sat down. Father stood over him. "You sit down, too," said he. All lower case sentence fragments manually removed: "Ah, that's perfectly true!" "Oh, do leave off playing the fool! Some idiot comes in, and you put us to shame!" "Wait a little, Varvara!" "That's her character," "Where have you been?" "I think," "I've forgotten something... my handkerchief, I think.... Well, even if I've not forgotten anything, let me stay a little." He sat down. Father stood over him. "You sit down, too," I've changed straight quotes " to balanced and tried: ” (...)+[.] Of course, this removes some fragments but deletes some text in balanced quotes and text starting with uppercase letters. [^A-Z] didn't work in the above expression. I realize that it may be impossible to achieve 100% accuracy but any useful expression, perl, or python script would be deeply appreciated. Cheers, Aaron

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  • Google Checkout. Show shipping rates before logging in possible?

    - by Roeland
    I am trying to integrate google checkout with my current site. I am calculating the shipping on my end, before passing it to google checkout. The problem is, when a person click the "google checkout" button, it takes them to google checkout but it does not show the shipping. It actually states it will be calculated on next step. In the next step it actually shows a drop down with the ONE option for shipping that I passed, which is a flat rate.. The problem is, to get to the next step you have to enter a credit card. Also, my shop has the shipping shown in the cart, so it would seem confusing to go to checkout and have a price without shipping. Here is the test code I am using right now to see if I can get it to show shipping before logging in (sample it here: http://sensenich.bythepixel.com/test.html) <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <title>Site Title</title> </head> <body> <form method="POST" action="https://sandbox.google.com/checkout/api/checkout/v2/checkoutForm/Merchant/468503062558352" accept-charset="utf-8"> <input type="hidden" name="item_name_1" value="Peanut Butter"/> <input type="hidden" name="item_description_1" value="Chunky peanut butter."/> <input type="hidden" name="item_quantity_1" value="1"/> <input type="hidden" name="item_price_1" value="3.99"/> <input type="hidden" name="item_currency_1" value="USD"/> <input type="hidden" name="checkout-flow-support.merchant-checkout-flow-support.shipping-methods.flat-rate-shipping-1.name" value="UPS Next Day Air"/> <input type="hidden" name="checkout-flow-support.merchant-checkout-flow-support.shipping-methods.flat-rate-shipping-1.price" value="20.00"/> <input type="hidden" name="checkout-flow-support.merchant-checkout-flow-support.shipping-methods.flat-rate-shipping-1.price.currency" value="USD"/> <input type="hidden" name="_charset_" /> <!-- Button code --> <input type="image" name="Google Checkout" alt="Fast checkout through Google" src="http://sandbox.google.com/checkout/buttons/checkout.gif?merchant_id=468503062558352&w=180&h=46&style=white&variant=text&loc=en_US" height="46" width="180" /> </form> </body> </html>

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