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• PHP DateTime Regex

  - by CogitoErgoSum

  Hey, long story short I have inherited some terrible code. As a result a string comparison is buggy when comparing dates due to the format of the date. I am trying to convert the date to a valid DateFormat syntax so I can run a proper comparison. These are some samples of the current format: 12/01/10 at 8:00PM 12/31/10 at 12:00PM 12/10/09 at 5:00AM and so forth. I'd like to convert this to a YYYYMMDDHHMM format i.e 201012012000 for comparison purposes. If anyone can give me a quick regex snippet to do this that'd be appreciated as right now i'm hitting a brick wall for a regex. I can do it by exploding the string over several times etc but I'd rather do it in a more efficient manner. Thanks!

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• Comparison of Hudson, CDash, CruisonControl, TeamCity for Continuous Integration / Builder

  - by Wernight

  I found most people talk about Hudson for simple and free continuous integration. Now personally I'm not fond of its interface which I find very messy, and I found almost no one talking about CDash -- I love CMake and CTest seem nice too. Could you give for each continuous integration server/builder/tester/dashboard a short description of its strong and weak decision points. Here is a list of those I've heard of, or used: Hudson CDash CruisonControl TeamCity Bamboo Environment: C++, C#, Python, PHP... can be various. PS: Preferably give one answer per tool or comment on it there is already one.

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• Compact representation of GUID/UUID?

  - by chakrit

  I need to generate a GUID and save it via a string representation. The string representation should be as short as possible as it will be used as part of an already-long URL string. Right now, instead of using the normal abcd-efgh-... representation, I use the raw bytes generated and base64-encode them instead, which results in a somewhat shorter string. But is it possible to make it even shorter? I'm OK with losing some degree of uniqueness and keeping a counter, but scanning all existing keys is not an option. Suggestions?

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• Long-running transactions structured approach

  - by disown

  I'm looking for a structured approach to long-running (hours or more) transactions. As mentioned here, these type of interactions are usually handled by optimistic locking and manual merge strategies. It would be very handy to have some more structured approach to this type of problem using standard transactions. Various long-running interactions such as user registration, order confirmation etc. all have transaction-like semantics, and it is both error-prone and tedious to invent your own fragile manual roll-back and/or time-out/clean-up strategies. Taking a RDBMS as an example, I realize that it would be a major performance cost associated with keeping all the transactions open. As an alternative, I could imagine having a database supporting two isolation levels/strategies simultaneously, one for short-running and one for long-running conversations. Long-running conversations could then for instance have more strict limitations on data access to facilitate them taking more time (read-only semantics on some data, optimistic locking semantics etc). Are there any solutions which could do something similar?

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• Joda time : DateTimeFormatter : beginning of a day

  - by bsreekanth

  Hello, DateTimeFormatter fmt = DateTimeFormat.forStyle('SS').withLocale(locale) DateTime dt = fmt.parseDateTime("11/4/03 8:14 PM"); the above statement will parse the string correctly, and save as DateTime (Joda Time). Now how to represent the beginning of a day. The below fails with DateTime dt = fmt.parseDateTime("11/4/03 00:01 AM"); Cannot parse "11/4/03 00:01 AM": Value 0 for clockhourOfHalfday must be in the range [1,12] I'm obviously confused with the standards, like what is the short representation of the beginning of a day. thanks.

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• Having a little trouble with this Java code. Beginner probably mixing some things with C#.

  - by Sergio Tapia

  package practico1; /** * Programador: Sergio Tapia Gutierrez * Fecha: Lunes 10, Mayo - 2010 * Practico: 1 */ public class Main { public static void main(String[] args) { System.out.println("Esta es una pequena aplicacion para mostrar los"); System.out.println("distintos tipos de datos que existen en Java 6."); //boolean, char, byte, short, int, long, float, double, String ejemplosBoolean(); } public void ejemplosBoolean(){ } } So, I'm just testing some things out, but I'm getting an error claiming that I'm trying to run ejemplosBoolean() in a static context when it isn't a static method. My question is, in Java do methods have to have static in order to use them even if they are in the same class?

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• "Could not register destruction callback" warn message leads to memory leaks?

  - by Séb

  Hello all, I'm in the exact same situation as this old question: http://stackoverflow.com/questions/2077558/warn-could-not-register-destruction-callback In short: I see a warning saying that a destruction callback could not be registered for some beans. My question is: since the beans whose destruction callback cannot be registered are two persistance beans, could this be the source of a memory leak? I am experiencing a leak in my app. Although the session timeout is set (to 30 minutes), my profiler shows me more instances of the hibernate SessionImpl each time I run a thread dump. The number of instances of SessionImpl is exactly the number of times I tried to login between two thread dumps. Thanks for your help...

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• Javascript to handle manipulating url anchor for bookmarking

  - by ajma

  Hello, I'd like to use the anchor part of the url (after the #) so that my page can have ajax/dhtml but still be able to have bookmarks work properly. I'm wondering is someone can help me get started on writing some javascript code for this. I'm using jQuery, but if the solution's a generic one, that's fine too. For my page, I could have settings like: "a" could be a number from 10-50 "b" is a 0 or 1 "c" is a 0 or 1 etc... I'd like some tips on writing optimized javascript code which could both parse and set something like #a=23&b=0&c=1 Also, I'd like to keep my url as short as possible, so if the default of "a" was 23, in the example above, the a=23 would be omitted. Is there a library that does all this stuff already?

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• Polygon triangulation

  - by Saurabh

  Hey, I am working on nesting of sheet metal parts and am implementing Minkowski Sums to find No Fit Polygons for nesting. The problem is I can give only convex sets as input to the code which calculates Minkowski sums for me. Hence I need to break a concave polygon, with holes into Convex sets. I am open to triangulation also, but I am looking for a working code on VC++ (6.0). I am slightly running short on time as my whole code is ready and just waiting for input in the form of convex sets. I would really appreciate if somebody with prior experience can help me in this. I have gone through other posts but did not find anything matching to this. I am a student of mechanical engineering and really dun have much idea about computer languages. All I can handle is compiling a code on VC++ and incorporate it with my existing code. Looking forward to responses!! Thanks Warm regards Saurabh India

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• Is it worth learning Perl 6?

  - by Andres

  I have the opportunity to take a two day class on Perl 6 with the Rakudo Compiler. I don't want to start a religious war, but is it worth my time? Is there any reason to believe that Perl 6 will be practical in the real world within the next two years? Does anyone currently use it effectively? Update I took the class and learned a lot. However, after day 1, my mind was a bit overwhelmed. There are tons of cool ideas in perl 6, and it will be neat to see what filters up to other languages. Overall the experience was a positive use of my time, though I wasn't able to absorb as much on the second day. If it were a three day class it would have been unproductive just because there is a limit to how much you can process in a short amount of time.

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• Flex URLRequest Timeout

  - by MooCow

  I have a Flex program that gets a JSON array from a PHP script. The PHP script doesn't contain just a simple JSON array but it grabs data from Activecollab and do some work on the data before encoding the data. The first test involve a small JSON array that took a short time to encode by PHP. However, when I try to scale up the test, the Flash movie will crash trying to load the JSON data from PHP. There's no code difference between the tests, just the amount of data and amount of time it takes PHP to encode. Am I looking at a memory problem or a time out problem? PS: When I call the PHP script in Firefox, it doesn't time out and still return a JSON array. It just took awhile to return the array.

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• Joda time : How to convert String to LocalDate?

  - by bsreekanth

  Hello, How to specify the format string to convert the date alone from string. In my case, only the date part is relevant Constructing it as DateTime fails: String dateString = "2009-04-17"; DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd"); DateTime dateTime = formatter.parseDateTime(dateString); with error java.lang.IllegalArgumentException: Invalid format: "2011-04-17" is too short Probably because I should use LocalDate instead. But, I do not see any formatter for LocalDate . What is the best way to convert String dateString = "2009-04-17"; into LocalDate (or something else if that is not the right representation) thanks...

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• Documenting user scenarios and measuring/testing

  - by Rimian

  Please forgive me as I don't quite remember the exact terms for what I am talking about... hence my question. Recently I worked on a large Agile team where I encountered a method of defining user scenarios (much like user stories). These scenarios were a few very basic short sentences with keywords and a structure that could be understood by humans (especially project managers) and could also be coded against using some Java Framework (for verifying tests). The exact structure of this mini language used keywords like "when" and "and" or "if" which was how the framework parsed and verified the result. The purpose of this framework was to interface between management and the acceptance testing framework. So essentially management could write the tests themselves using English. The scenario went something like this: "When a user visits URL and User clicks on X Something happens (that can be measured)" Can anyone help me remember exactly what I am talking about? Many thanks

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• Help with SQL query (add 5% to users with conditions)

  - by Mestika

  Hi everyone, I’m having some difficulties with a query which purpose is to give users with more than one thread (called CS) in current year a 5% point “raise”. My relational schema looks like this: Thread = (threadid, threadname, threadLocation) threadoffering = (threadid, season, year, user) user = (name, points) Then, what I need is to check: WHERE thread.threadid = threadoffering.threadid AND where threadoffering.year AND threadoffering.season = currentDate AND where threadoffering.User 1 GIVE 5 % raise TO user.points I hope it is explained thoroughly but otherwise here it is in short text: Give a 5 % “point raise” to all users who has more than 1 thread in threadLocation CS in the current year and season (always dynamic, so for example now is year = 2010 and season is = spring). I am looking forward to your answer Sincerely, Emil

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• Perl graph garbage collection usage

  - by Kevin

  Hi, I have built a tiny application in Perl that displays a graph over time. It graphs garbage collection usage over time. I use gnuplot to display the actual graph. This works fine if the time period is short, like a few hours. However, as the time increases (say a few days), the graph becomes difficult to read as the information gets crammed. Note that there is a tool called gcviewer which performs a similar function, it works by allowing you to choose the percentage of the graph. http://www.tagtraum.com/gcviewer.html Ideally I would like to take this further by adding the ability to "move" within the graph. I am not a developer but am good at scripting, so if there is some module in Perl which would provide this functionality it would be excellent! However, if it cannot be done in Perl, I am not averse to learning a new technology. Inputs are highly appreciated. Thanks!

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• How to assemble a multi-project ant build system

  - by Alex Worden

  At my new gig, they use Ant and cannot be persuaded to move to Maven. I've looked everywhere for a decent example of how a multi-project ant build system should be assembled. The apache site falls short. I'm looking specifically for best practices to: Automatically build local projects that are dependencies of a project Share artifacts from project to their dependents Export a project's dependencies and generated artifacts (jars) to be inherited by dependent projects Share third-party dependencies between projects I'm sure I can do all this without using Ivy - what did people do before Ivy? I really don't want to have to set up a corporate repository or rely on external repositories - the engineers here are really against that and have all their third-party jars checked into src control. Can anyone point me at a good open source example of a multi-project ant build?

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• How to list all attached USB devices in Visual C++

  - by vinzenzweber

  In Short: I need to detect hotplug events of my USB CDC device by PID/VID and get the corresponding virtual COM port which was created by Windows in Visual C++ and in the end create a dll. I have a USB CDC device which I need to be notified of when connected/disconnected on Windows. My approach is to use RegisterDeviceNotification and an "invisible" Window to receive WM_DEVICECHANGE notifications. This part is working so far. Now as far as I found out I need to get the list of USB devices that is plugged, iterate over it and filter out the devices with my PID/VID? I assume that I am then able to get more informations about the device including the COM port? Is the only way to achieve my goal to use SetupDi calls in setupapi.h? Is using WDK / DDK the only way to achieve my goal? As soon as that is working I open-source it on http://github.com/vinzenzweber/USBEventHandler. The Mac version is available already!

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• MFC SDI Application without a default "New Document" on Startup

  - by Jd

  My application is an SDI with multiple views. By default, it creates a new document when the application starts. I want to modify this behavior so that a new document is created only when user explicitly clicks on "New". Or at least mimic this behavior. Any ideas? I am using Visual Studio 2008 with MFC feature pack. I googled and found some solution to this problem in an old MS Journal article. But unfortunately it doesn't seem to work now. Any workarounds or solutions? In short, I need to differentiate between framework call to OnFileNew() and User Click on New.

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• Best Method for Minimizable Fullscreen Window

  - by kaykun

  Hi, I'm coding a short game in C++ and Win32, and I want to be able to make it in fullscreen with a fixed size. I also want the user to be able to switch focus between the game window and other windows as much as he/she wants without any weird screen glitches. So far I know of the ChangeDisplaySettings function and creating the window with the WS_POPUP style at initialization to make it fullscreen. To detect the user switching focus to other windows by way of alt+tab or otherwise, what messages should I be handling on the window's WndProc or should I be using another function? When loss of focus is detected should I only call ChangeDisplaySettings(NULL, 0); or are there other functions I should call as well? And what method should I use to handle focus back into the window? Also can anyone give me some info on how to make it work smoothly for different screen sizes? Thanks for any help.

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• Umbraco or ASP.NET MVC

  - by StupidBoy

  I'm about to create a site that will act as public front site of company that sells furniture, but after user log in, he'll see much more options. Internal news, files to download, customized pricings, newsletters, etc. - stuff for wholesale clients. I want to make it quickly and maintain/extend it easily. I'm asp.net developer and while I could write it in python, php, whatever else (I know these too), I still prefer asp.net. I was thinking about umbraco, since it gives a real productivity boost and that I familiar with it ( and extending it). I've had a short romance with ASP.NET MVC, so I know what it's all about, but I would still spend some time learning it (but what a fun!). Of course, there's also webforms, but that's my last choice here. Last but not least to mention is the SEO. The question is, have anyone of you had similiar dilemma and what was your final choice?

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• 3rd party data - Store in Data Warehouse or Primary database?

  - by brydgesk

  This is mostly a data warehouse philosophy question. My project involves an Oracle forms application, and a Teradata Data Warehouse for reporting and ad-hoc purposes. In addition to the primary data created by the users of our application, we also require data from various other sources. Currently, this 3rd party data comes via FTPd flat files directly to our Data Warehouse. To access the data, our users must use a series of custom BusinessObjects reports. My question is, would it make more sense for this data to be sent to our source Oracle system instead? Is it ever appropriate for a Data Warehouse to be the point of origin for users to access raw data? In short, is it more important that the operational database contain only the data created by your project, or that the data warehouse remain dedicated solely to reporting and analysis?

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• Parse HTML file to grab all ID and Classes for a CSS file

  - by iamfriendly

  Hey all, A short while ago, I'm fairly certain I came across an application (or perhaps a plugin for Coda - the IDE I use) which quickly parses a html document and then spits out all of the elements with IDs and Classes for me to use in a CSS file. Having fully 'got into' zen coding - using the wonderful TEA plugin for Coda, I'm now hot on the heels of this app/plugin again. I've tried and failed miserably at hunting through Google, but have come up completely empty handed. Does anyone know of anything which can do this? Happy New Year everyone!

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• Data Structure Behind Amazon S3s Keys (Filtering Data Structure)

  - by dimo414

  I'd like to implement a data structure similar to the lookup functionality of Amazon S3. For those of you who don't know what I'm taking about, Amazon S3 stores all files at the root, but allows you to look up groups of files by common prefixes in their names, therefore replicating the power of a directory tree without the complexity of it. The catch is, both lookup and filter operations are O(1) (or close enough that even on very large buckets - S3's disk equivalents - both operations might as well be O(1))). So in short, I'm looking for a data structure that functions like a hash map, with the added benefit of efficient (at the very least not O(n)) filtering. The best I can come up with is extending HashMap so that it also contains a (sorted) list of contents, and doing a binary search for the range that matches the prefix, and returning that set. This seems slow to me, but I can't think of any other way to do it. Does anyone know either how Amazon does it, or a better way to implement this data structure?

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• Visual Studio Database Professional GDR R2 takes a long time to serialize DBMDL file

  - by Nicolas Webb

  The amount of time it takes to completely serialize the DBMDL (to finish "Your project will be available after 10000 operations are completed) is becoming a hindrance to productivity. I've done what I can to optimize disk activity (excluding my personal TEMP folder from the virus scanner, along with my local source repository). Short of getting a SSD I'm not sure what else I can do along those lines. I believe it has something to do with how the project is organized. The finished DBMDL file is roughly 150MB. Others throughout our organization do not seem to have this issue. Anyone had to deal with this?

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• Problem with constants in application.ini after PHP upgrade

  - by Marek

  Hi, I've upgraded PHP on my local dev system to version 5.3.0, and there is some problem when I use constants in application.ini - following manual http://framework.zend.com/manual/en/learning.quickstart.create-project.html I have: bootstrap.path = APPLICATION_PATH "/Bootstrap.php" which leads to: Warning: require_once(APPLICATION_PATH/Bootstrap.php) [function.require-once]: failed to open stream: No such file or directory in Zend\Application.php on line 320 any ideas? SOLVED: Actually name of my constant was _DIR_APPLICATION (code above was copied from ZF manual) - problem lies in this underscore at the begining - it seems that parse_ini_file() in PHP 5.3.0 doesn't replace constants named like this. Short test - you need two files: test.ini bootstrap.path = _DIR_APPLICATION "/Bootstrap.php" bootstrap.class = "Bootstrap" and test.php <?php define('_DIR_APPLICATION', 'test'); $data = parse_ini_file('test.ini'); print_r($data); try to run, then change constant name to 'DIR_APPLICATION' (in both files) and compare result ;)

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