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• Pros and cons of developing modern services in Java

  - by r3mus

  I'm interested in the philosophical and architectural justification (or lack thereof) in using Java to develop in today's modern world (exclude mobile/embedded platforms of course). Why would one choose to develop (or not develop) a back-end in Java? Why would one choose to develop (or not develop) a front-end UI in Java? Why do large enterprises lean towards developing in Java rather than adopt more modern (and standardized) technologies? *disclaimer: I'm not a fan of Java in the enterprise, I'm simply curious what drives enterprises to continue the trend.

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• At what point should data be sent back to server?

  - by whamsicore

  A good example would be the stackexchange "rate" button. When a post is upvoted the arrow changes color immediately. However there is a grace period for one to edit one's vote decision (oops! voted by mistake?). Is the upvote action processed immediately or does is only process after a set time period, or when the user leaves the page? How exactly is this rating processed? What is the standard for handling dynamic page edits (e.g. stackexchange rating, facebook posts?)

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• Anti aliasing problem

  - by byronyasgur

  I am auditioning fonts on google web fonts and one that I was discounting was Ubuntu because it looked a bit jagged ( screenshot below taken straight from google); however afterward I read an article where it was mentioned as a good choice, and there was a screenshot where it looked really good ( to me anyway ). I am using windows 7 and have tried looking at it in chrome and firefox. I notice the same thing with some other fonts but this one is a good example because it looks perfect in the screenshot but not so good when I look at it on their site. I know this essentially is a question about setting my computer, but I thought that this would be the best place to pose the question: Is there something wrong with the settings on my machine seeing as it's obviously not showing the font the same on my computer as it did when the article writer downloaded it and used it in an image. The screenshot from Google ... The screenshot from the article above ...

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• Separate urls for a set of pages sharing 80% duplicate content

  - by user131003

  Issue: Currently my site has one particular page which has country specific data. So I've URLs like : mysite.com/sale-united-states mysite.com/sale-united-kingdom mysite.com/sale-sweden etc. All these pages have 80-90% common content and 10-20% country specific content. currently all these pages canonically point to mysite.com/sale-united-states. The problem is when someone searches for "sale Sweden", Google correctly shows mysite.com/sale-united-states page, which does not feel correct as it shows US page instead of Sweden. Now I'm thinking of not using canonical url so that country specific urls are produced in Google saerch. But I'm not sure how 80% duplicate content is going to affect SEO? What should be the recommended approach for this situation? A friend of mine suggested a "separate subdomain per country" based approach but it seems overkill for one page.

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• Test descriptions/name, say what the test is? or what it means when it fails?

  - by xenoterracide

  The API docs for Test::More::ok is ok($got eq $expected, $test_name); right now in one of my apps I have $test_name print what the test is testing. So for example in one of my tests I have set this to 'filename exists'. What I realized after I got a bug report recently, and realized that the only time I ever see this message is when the test is failing, if the test is failing that means the file doesn't exist. In your opinion, do you think these $test_name's should say what the test means if successful? what it means if it failed? or do you think it should say something else? please explain why?

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• Install a Mirror without downloading all packages from official repository

  - by Sam

  I first gonna explain the situation: I have a Laptop which is connected to a wifi connection, and a Desktop which can not be connected to Internet (the modem is too far from it), and i want to install some software on the last one. (The two PCs are running Ubuntu 12.04, and are connected with an Ethernet cable) I've already searched for a solution, but all I've found was the use of some softwares that should have been already installed on the "Internet-less PC". ( Keryx, APTonCD ... ) What I want to do is to create a mirror in my laptop which contain the packages i have in this one ( situated in /var/cache/apt/archive ) and i don't want to download all the packages from the official repository, I actually don't need them. Can someone tell me if it is possible to do that ? Thanks,

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• Good sites for sharing code snippets & pastes that you can share links to?

  - by acidzombie24

  I know there are site tools to check if your webpage is alive, has compression, etc but lets not get into that. What are useful sites to paste code in and to share links to it? The three i know are http://codepad.org/ shows source and runs code online http://www.pastie.org/ share source with syntax highlighting http://jsfiddle.net/ great for JS help or for the occasional test. What else do you know of? One answer per question. I'll let lints and validators slide since you do paste code into them. Mention a weakness if you do know one so others wont be surprised or disappointed.

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• Asus 1215n GPU driver/s don't give me a "full" OS experience

  - by AFD

  I'm use to not having specific drivers from a manufacture on my laptop when running a Linux OS and that has always been fine - there's been adequate FOSS drivers for my needs and it hasn't ruined any of my OS experience. When I bought an Asus 1215n one of the upsides to the hardware seemed to be the switchable GPU that could give lots of performance or lots more battery life and would switch on-the-fly... with Windows of course. Seems that the Nvidia driver are crap and people advise not installing them. I have some sort of workaround for vga_switcharoo (?) and the on-the-fly nature of the GPUs has turned in to a manual one :( The worst bit though (aside from shorter battery life) is the web experience with HTML5. If I visit Mozilla's Web O'Wonder site I'm told I don't have WebGL working due to driver issues. This really blows - is it possible that proprietary drivers can now ruin my web experience too?!

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• How to mimic the same fixed-size horizon as in this racing game?

  - by Aybe

  I am trying to replicate the same horizon (buildings and sky) as in the image below: As you can see, the player has advanced in a straight line, yet the horizon has still the same size: This is my attempt using 3D, while it's okay when the player is on the start line: It's not so great when the player advanced as much as in the image no. 2: This is an overview of where the horizon buildings and sky are located: Obviously this won't achieve such effect when one is close to it, so I've tried to scale up the horizon on all axes but the problem is that the buildings are too small depending where you look at them from. How can one mimic such rendering ?

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• how Computer Networks is related to Web/Desktop Java programming

  - by C4CodeE4Exe

  Being a Java programmer , I am wondering how could my work experience would help me learning networking skills. I know C language is used in network socket programming. I know if one knows how to program in one language its not tough to learn another language. Question is I am not able to find much on networks when it comes to Java(may be my knowledge is limited). Do companies like CISCO,TELUS Inc. rely heavily on programmers with such background.

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• PeopleSoft New Design Solves Navigation Problem

  - by Applications User Experience

  Anna Budovsky, User Experience Principal Designer, Applications User Experience In PeopleSoft we strive to improve User Experience on all levels. Simplifying navigation and streamlining access to the most important pages is always an important goal. No one likes to waste time waiting for pages to load and watching a spinning glass going on and on. Those performance-affecting server trips, page-load waits and just-too-many clicks were complained about for a long time. Something had to be done. A few new designs came in PeopleSoft 9.2 helping users to access their everyday work areas easier and faster. For example, Dashboard and Work Center aggregate most accessed information sections on a single page; Related Information allows users to complete transaction-related-research without interrupting a transaction and Secure Search gets users to a specific page directly. Today we’ll talk about the Actions menu. Most PeopleSoft pages are shared between individual products and product lines. It means changing the content on a single page involves Oracle development and quality assurance time for making and testing the changes. In order to streamline the navigation and cut down on accessing PeopleSoft pages one-page-at-a-time, we introduced a new menu design. The new menu allows accessing shared pages without the Oracle development team making any local changes, and it works as an additional one-click-path to specific high-traffic actionable pages. Let’s look at how many steps it took to Change Salary for an employee in HCM 9.1 before: Figure 1. BEFORE: The 6 steps a user would take to Change Salary in PeopleSoft HCM 9.1 In PeopleSoft 9.1 it took 5 steps + page loading time + additional verification time for making sure a correct employee is selected from the table. In PeopleSoft 9.2 it only takes 2 steps. To complete Ad Hoc Change Salary action, the user can start from the HCM Manager's Dashboard, click the Action menu within a table, choose a menu option, and access a correct employee’s details page to take an action. Figure 2. AFTER: The 2 steps a user would take to Change Salary in PeopleSoft HCM 9.2 The new menu is placed on a row level which ensures the user accesses the correct employee’s details page. The Actions menu separates menu options into hierarchical sections which help to scan and access the correct option quickly. The new menu’s small size and its structure enabled users to access high-traffic pages from any page and from any part of the page. No more spinning hourglass, no more multiple pages upload. The flexible design fits anywhere on a page and provides a fast and reliable path to the correct destination within the product. Now users can: Access any target page no matter how far it is buried from the starting point; Reduce navigation and page-load time; Improve productivity and reduce errors. The new menu design is available and widely used in all PeopleSoft 9.2 product lines.

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• Box 2D Collision Question

  - by Farooq Arshed

  I am very new to Box 2D Physics world. I wanted to know how to collide 2 bodies when one is Dynamic and other is Kinematic. The whole Scenario is explained below: I have 3 balls in total. I want to balls to remain in their places and the third ball to be able to move. When the third ball hits the other two balls then they should move according to the speed and direction from which they were hit. My gravity of the world is 0 because I only want z-axis gravity. I would also like some one to point me towards some good tutorials regarding Box 2D basics which is language independent. I hope I have explained my scenario well. Thanks for the help in advance.

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• Why 'nobody' always starts a new `find` program that always consume my memory?

  - by UniMouS

  $ ps -elf | grep ... 0 D nobody 27320 27319 2 90 10 - 353471 sleep_ 07:54 ? 00:02:19 /usr/bin/find / -ignore_readdir_race ( -fstype NFS -o -fstype nfs -o -fstype nfs4 -o -fstype afs -o -fstype binfmt_misc -o -fstype proc -o -fstype smbfs -o -fstype autofs -o -fstype iso9660 -o -fstype ncpfs -o -fstype coda -o -fstype devpts -o -fstype ftpfs -o -fstype devfs -o -fstype mfs -o -fstype shfs -o -fstype sysfs -o -fstype cifs -o -fstype lustre_lite -o -fstype tmpfs -o -fstype usbfs -o -fstype udf -o -fstype ocfs2 -o -type d -regex \(^/tmp$\)\|\(^/usr/tmp$\)\|\(^/var/tmp$\)\|\(^/afs$\)\|\(^/amd$\)\|\(^/alex$\)\|\(^/var/spool$\)\|\(^/sfs$\)\|\(^/media$\)\|\(^/var/lib/schroot/mount$\) ) -prune -o -print0 ... This job always start automatically and consumes my memory. Even after I kill it, it will starts several hours later. What's that job? EDIT Note: the pid is different from the above because I killed the above one, wait for several hours, then the second one comes. $ pstree -psl |-anacron(25920)---sh(25929)---run-parts(25930)---locate(26343)---updatedb.findut(26348)-+-frcode(26358) | |-sort(26357) | `-updatedb.findut(26356)---su(26387)---sh(26402)---find(26403) This is what it look like in a graphical tool:

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• Using an old penalized domain for a new website

  - by MiladSafaei

  I had a website with 2 domains like these: firstdomain.com and first-domain.com. The main domain was first-domain.com and the other one was 301 redirected to first one. The main domain got a Google Penguin penalty some months ago. I uploaded the site on an new domain and removed Google index of old domain by using the remove URL tool in Webmaster Tools. Now, I want to use firstdomain.com (which was redirected to the penalized domain) for a new and fresh website with new and perfect content. Is it probable that history of this domain affects the new website and harms its ranking?

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• HTML5-Canvas: worth using ImpactJS or other framework?

  - by John

  I've been making an HTML5 game without any type of external framework. I haven't found a reason to use one so far. However, there is one thing I'm wondering about. On my Galaxy Nexus, I get about ~40fps. While that would usually be a decent framerate, my game is a rather fast paced game with a gamepad. Because of this, it feels very unsatisfying to play when not capped at 60fps. Are there frameworks out there that can improve performance without toning down on graphics? Or is there something I could do myself without necessarily having to use a framework? I've looked over the basic things such as sticking to integer coordinates, but I didn't see an increase in performance whatsoever? I did some testing with jsperf and results were virtually identical. Does this depend more on the browser?

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• International TLD's vs. duplicate content

  - by Litso

  Hey all, I currently work at a pretty big website that has visitors from around the globe. My job is to help out on the SEO, and one thing we've been discussing lately is the use of international TLD's. The ones we use range between: (partly) translated websites like .es and .de that serve most of the content in the country's language non-translated (english) websites for non-english languages (due to a lack of translations) like .ro and .cz english websites for english speaking countries with localized TLD's (.co.nz, .co.uk) On one hand I really have the feeling this is causing a lot of duplicate content, especially for the last two categories of TLD's. On the other hand though it seems a lot like country-specific TLD's tend to score a lot better in that country's Google. Would it be advisable to keep on using these domains, or should we canonicalize them all to the .com version?

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• What's the difference between my nameserver and CName settings?

  - by Josh Mcquiston

  I have purchased a domain name(mxsoup.net) through GoDaddy, and it is just parked. In order to set up my custom URL for my SourceAudio site, they give me the following instructions: In order to host your site at a your own URL, we need you to set up some DNS records to point your URL to us. Specifically, we need two CNAME references, one for 'www.mxsoup.net' and one for 'secure.mxsoup.net', both of which should point to 'web2.sourceaudio.com'. But the rep on the phone at GoDaddy said that my site is hosted at HostMonster.com, and therefore I need to talk to them to accomplish this(which is possibly true, but my business owner says he hasn't purchased hosting for this particular domain, yet he does have some other sites in his hostmonster hosting acct.) My GoDaddy account shows that my nameservers are pointing at NS1.HOSTMONSTER.COM, and NS2.HOSTMONSTER.COM, and I can edit those. But is this the same as setting up the CNAME as described above? Any help would be greatly appreciated!

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• How to perform simple collision detection?

  - by Rob

  Imagine two squares sitting side by side, both level with the ground like so: A simple way to detect if one is hitting the other is to compare the location of each side. They are touching if all of the following are false: The right square's left side is to the right of the left square's right side. The right square's right side is to the left of the left square's left side. The right square's bottom side is above the left square's top side. The right square's top side is below the left square's bottom side. If any of those are true, the squares are not touching. But consider a case like this, where one square is at a 45 degree angle: Is there an equally simple way to determine if those squares are touching?

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• UDK/ UnrealScript class interaction? HUD advice?

  - by Holly

  Beginner basics requested here, While i'm familiar with the basics of OOP programming i've just started looking as UnrealScript for a game i had made in the UDK editor up to now. I have a class that extends UTHUD and another that extends UDKPAWN. I have the pawn destroyed when its been shot 3 times and some basic helloworld text displaying in my HUD but i'm completely lost as to how one would get some sort of feedback between the two classes going on? What i would like to do to start off, is have some text that says something like "Amount of baddies killed: 0" Displayed on the HUD which would then increment each time the player destroyed one of my pawns. I'm sorry if this is an inappropriate question but i've never really worked within a framework like this before and wasn't sure where to go for help to get my footing. All advice appreciated!

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• Reach More Customers - Partner Event Publishing System Now Available!

  - by swalker

  The Partner Event Publishing Service is now available to partners that have completed at least one Specialization. If you are an active Gold, Platinum or Diamond OPN member having accomplished at least one Specialization then you can start publishing your standalone live events today, including both in-person and webinar activities. Events are published on both Oracle.com/events and on Oracle’s internal calendar. You benefit by reaching new potential customers and creating more brand awareness.  Reach more customers by publishing Partner led events on Oracle.com/events by filling out a simple spreadsheet and submitting them to [email protected]. Click here for more information, and click here to download the Partner Event Publishing Form spreadsheet.

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• how to contribute the same source code to two separate open-source projects?

  - by Jason S

  Let's say there are two similar open source projects A and B, both licensed under the Apache Software License 2.0. I would like to contribute an improvement to both projects (because I don't know which one is administered better, and I would like to see my improvement show up in both). Is there a way I can contribute this improvement to both projects in a simple way? (One obvious approach is to start an open source project C licensed under Apache 2.0, but that's a headache for various reasons; I don't want to maintain a project myself)

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• SQL Server - Rebuilding Indexes

  - by Renso

  Goal: Rebuild indexes in SQL server. This can be done one at a time or with the example script below to rebuild all index for a specified table or for all tables in a given database. Why? The data in indexes gets fragmented over time. That means that as the index grows, the newly added rows to the index are physically stored in other sections of the allocated database storage space. Kind of like when you load your Christmas shopping into the trunk of your car and it is full you continue to load some on the back seat, in the same way some storage buffer is created for your index but once that runs out the data is then stored in other storage space and your data in your index is no longer stored in contiguous physical pages. To access the index the database manager has to "string together" disparate fragments to create the full-index and create one contiguous set of pages for that index. Defragmentation fixes that. What does the fragmentation affect?Depending of course on how large the table is and how fragmented the data is, can cause SQL Server to perform unnecessary data reads, slowing down SQL Server’s performance.Which index to rebuild?As a rule consider that when reorganize a table's clustered index, all other non-clustered indexes on that same table will automatically be rebuilt. A table can only have one clustered index.How to rebuild all the index for one table:The DBCC DBREINDEX command will not automatically rebuild all of the indexes on a given table in a databaseHow to rebuild all indexes for all tables in a given database:USE [myDB]    -- enter your database name hereDECLARE @tableName varchar(255)DECLARE TableCursor CURSOR FORSELECT table_name FROM information_schema.tablesWHERE table_type = 'base table'OPEN TableCursorFETCH NEXT FROM TableCursor INTO @tableNameWHILE @@FETCH_STATUS = 0BEGINDBCC DBREINDEX(@tableName,' ',90)     --a fill factor of 90%FETCH NEXT FROM TableCursor INTO @tableNameENDCLOSE TableCursorDEALLOCATE TableCursorWhat does this script do?Reindexes all indexes in all tables of the given database. Each index is filled with a fill factor of 90%. While the command DBCC DBREINDEX runs and rebuilds the indexes, that the table becomes unavailable for use by your users temporarily until the rebuild has completed, so don't do this during production  hours as it will create a shared lock on the tables, although it will allow for read-only uncommitted data reads; i.e.e SELECT.What is the fill factor?Is the percentage of space on each index page for storing data when the index is created or rebuilt. It replaces the fill factor when the index was created, becoming the new default for the index and for any other nonclustered indexes rebuilt because a clustered index is rebuilt. When fillfactor is 0, DBCC DBREINDEX uses the fill factor value last specified for the index. This value is stored in the sys.indexes catalog view. If fillfactor is specified, table_name and index_name must be specified. If fillfactor is not specified, the default fill factor, 100, is used.How do I determine the level of fragmentation?Run the DBCC SHOWCONTIG command. However this requires you to specify the ID of both the table and index being. To make it a lot easier by only requiring you to specify the table name and/or index you can run this script:DECLARE@ID int,@IndexID int,@IndexName varchar(128)--Specify the table and index namesSELECT @IndexName = ‘index_name’    --name of the indexSET @ID = OBJECT_ID(‘table_name’)  -- name of the tableSELECT @IndexID = IndIDFROM sysindexesWHERE id = @ID AND name = @IndexName--Show the level of fragmentationDBCC SHOWCONTIG (@id, @IndexID)Here is an example:DBCC SHOWCONTIG scanning 'Tickets' table...Table: 'Tickets' (1829581556); index ID: 1, database ID: 13TABLE level scan performed.- Pages Scanned................................: 915- Extents Scanned..............................: 119- Extent Switches..............................: 281- Avg. Pages per Extent........................: 7.7- Scan Density [Best Count:Actual Count].......: 40.78% [115:282]- Logical Scan Fragmentation ..................: 16.28%- Extent Scan Fragmentation ...................: 99.16%- Avg. Bytes Free per Page.....................: 2457.0- Avg. Page Density (full).....................: 69.64%DBCC execution completed. If DBCC printed error messages, contact your system administrator.What's important here?The Scan Density; Ideally it should be 100%. As time goes by it drops as fragmentation occurs. When the level drops below 75%, you should consider re-indexing.Here are the results of the same table and clustered index after running the script:DBCC SHOWCONTIG scanning 'Tickets' table...Table: 'Tickets' (1829581556); index ID: 1, database ID: 13TABLE level scan performed.- Pages Scanned................................: 692- Extents Scanned..............................: 87- Extent Switches..............................: 86- Avg. Pages per Extent........................: 8.0- Scan Density [Best Count:Actual Count].......: 100.00% [87:87]- Logical Scan Fragmentation ..................: 0.00%- Extent Scan Fragmentation ...................: 22.99%- Avg. Bytes Free per Page.....................: 639.8- Avg. Page Density (full).....................: 92.10%DBCC execution completed. If DBCC printed error messages, contact your system administrator.What's different?The Scan Density has increased from 40.78% to 100%; no fragmentation on the clustered index. Note that since we rebuilt the clustered index, all other index were also rebuilt.

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• ALL, ALLEXCEPT and VALUES in DAX

  - by Marco Russo (SQLBI)

  When you use CALCULATE in DAX you are creating a new filter context for the calculation, based on the existing one. There are a few functions that are used to clear or preserve a column filter. These functions are: ALL – it can be used with one or more columns from a table, or with the name of a table. It returns all the values from the column(s) or all the rows from the table, ignoring any existing filter context. In other words, ALL clear an existing filter context on columns or table. We can use...(read more)

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• All Access Pass to Oracle Support

  - by Leslie-Oracle

  Untitled Document Looking for tips, recommendations and resources to help you keep your Oracle applications and systems running at peak performance? Want to find out how to get more out of your Oracle Premier Support coverage? More than 500 experts from across Services and Support will be on hand at Oracle OpenWorld to answer your questions and share best practices for adopting and optimizing Oracle technology. Find out what Oracle experts know about the best tools, tips and resources for supporting and upgrading Oracle technology. Attend one of our “Best Practices” sessions. Stop by the Oracle Support Stars Bar to talk with support experts. Open daily @ Moscone West, Exhibition hall 3161. See Oracle support tools in action at one of our demos. View the schedule of all of our Oracle Premier Support activities at Oracle OpenWorld for more information. See you there!

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• Which JavaScript carousel zooms blocks from the playlist?

  - by Iain Hallam

  I saw a carousel/slider for displaying featured content a while ago that does something that most don't. It started fairly simply, with the top feature large, and a playlist to the side of other featured stories: Feature 1 then began to slide towards the bottom right, while feature 2 moved to occupy the main slot, and the previews of features 3 and 4 moved up: The slider had now completed a whole swap, and was ready to do the same thing with feature 3. My Google-fu seems to be lacking in finding this again; does anyone know of this slider? I think it was based on one of the frameworks, but I'm not sure whether it was jQuery or one of the others.

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