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• Are there any Parsing Expression Grammar (PEG) libraries for Javascript or PHP?

  - by Peter J. Wasilko

  I find myself drawn to the Parsing Expression Grammar formalism for describing domain specific languages, but so far the implementation code I've found has been written in languages like Java and Haskell that aren't web server friendly in the shared hosting environment that my organization has to live with. Does anyone know of any PEG libraries or PackRat Parser Generators for Javascript or PHP? Of course code generators in any languages that can produce Javascript or PHP source code would do the trick.

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• Does software testing have a future?

  - by Firas

  Hello everybody. My current career is in software testing, but I feel that I am wasting my time, maybe because I don't know the future path of this career, and where I will arrive in the future if I continue in this career. And I don't know how can I develop myself in this career. Can I have my own job in this field? Please give me good suggestions and opinion. Many thanks.

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• Pagination on blog content type in eZ Publish

  - by foosadi

  Hi, Im not sure if I have missed anything but I am trying to achieve pagination on blog posts within my blog. Is there a setting somewhere to show a certain number of blog posts per page by default? Or am I going to need to add that functionallity myself? Thanks.

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• Could a derived-class object treated as if it's the same type of a bases class? <noobieQ/>

  - by M4design

  Say I got: class X_ { public: void do() { } } class Y_ : public X_ { } And I have this function: void foo(X_ whatever) { whatever.do(); } Can I send a "Y_" object to the foo function, would this work? I just realized that I could have tested this myself :)

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• Is there a brief syntax for executing a block n times in Scala?

  - by Motlin

  I find myself writing code like this when I want to repeat some execution n times: for (i <- 1 to n) { doSomething() } I'm looking for a shorter syntax like this: n.timesRepeat(doSomething()) Does something like this exist in Scala already?

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• What things must I know about OpenAL memory management?

  - by mystify

  I am playing sound with OpenAL, and it seems to increase memory footprint dramatically for every little sound I play. It seems that OpenAL never frees memory itself and that playing a Source causes memory footprint to grow. I couldn't find any good resources about OpenAL memory management, but I bet I must do a lot of stuff myself. Maybe someone knows a ressource for that?

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• App store for the PC?

  - by Chris

  So I've spent a lot of time making an iPhone game and have recently realized that I don't have to limit myself to just Apple - I know there are app stores for Palm and Android, but does anybody know of a good "app store" for the plain old PC? I would like to have one where individual developers can publish an app and not have to worry about all the billing and piracy issues!

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• what happens when two exceptions occur?

  - by ashish yadav

  what will the operating system and compiler behave when they have two exceptions. And none of them have been caught yet. what type of handler will be called . lets say both the exceptions were of different type. i apologize if i am not clear but i feel i have made myself clear enough. thank you!!!

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• How to find an image within another image using python

  - by Zach

  I'm trying to use python to determine if one (small) image is within another (large) image. Any suggestions before I take myself completely down the wrong path?

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• Converting DTOs to View Models

  - by illvm

  Does anyone know of a good (read: quick to code) method for converting DTOs to View Models or mapping DTO members to View Model members? Lately I've been finding myself writing many conversion and helper methods but this is a very arduous and tedious task. Moreover, it will often needs to be done twice (DTO - View Model, View Model - DTO). Is there a methodology, technique, or technology which would allow me to do this more quickly and efficiently?

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• Unicode filename to python subprocess.call()

  - by otrov

  I'm trying to run subprocess.call() with unicode filename, and here is simplified problem: n = u'c:\\windows\\notepad.exe ' f = u'c:\\temp\\nèw.txt' subprocess.call(n + f) which raises famous error: UnicodeEncodeError: 'ascii' codec can't encode character u'\xe8' Encoding to utf-8 produces wrong filename, and mbcs passes filename as new.txt without accent I just can't read any more on this confusing subject and spin in circle. I found here lot of answers for many different problems in past so I thought to join and ask for help myself Thanks

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• Where can I find the xcode template for opencv on iPhone ?

  - by apple.dev

  I want to use opencv frequently for iPhone development, so if there is existing xcode template , that will save me a lot time. Also for others who have same purpose. If not, I need to do it myself. Thanks for let me know if you know.

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• How to tell where I am in an array with pointer arythmetic?

  - by klez

  In C, I have declared a memory area like this: int cells = 512; int* memory = (int*) malloc ((sizeof (int)) * cells); And I place myself more or less in the middle int* current_cell = memory + ((cells / 2) * sizeof (int)); My question is, while I increment *current_cell, how do I know if I reached the end of the allocated memory area?

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• Call Dispose() on a WindowsIdentity object? C#

  - by Andy

  I am retrieving a WindowsIdentity object by calling: win_id = System.Security.Principal.WindowsIdentity.GetCurrent(); with the intention of getting the currently logged on user name, which works fine. WindowsIdentity implements IDisposable, but since I din't create the object myself, do I still need to call .Dispose() on it when I am finished with it or not? Thanks.

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• OpenCL C/C++ dynamic binding library (win32 and more)

  - by rotoglup

  I'm giving a try at OpenCL, and in order to put this in production I'd like to be able to bind dynamically to OpenCL.DLL (when under Windows), in order to handle 'gracefully' the case where no OpenCL is installed on the host computer. Is there any available library (or code snippet) that takes care of this dynamic binding in C or C++, much like GLEW does for OpenGL ? I'd like to avoid the hassle to do it myself. Thanks,

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• Which style of return is "better" for a method that might return None?

  - by Daenyth

  I have a method that will either return an object or None if the lookup fails. Which style of the following is better? def get_foo(needle): haystack = object_dict() if needle not in haystack: return None return haystack[needle] or, def get_foo(needle): haystack = object_dict() try: return haystack[needle] except KeyError: # Needle not found return None I'm undecided as to which is more more desirable myself. Another choice would be return haystack[needle] if needle in haystack else None, but I'm not sure that's any better.

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• Any way to add tabbed forms in django administration site ?

  - by tomjerry

  When using Django "out-of-the-box" administration forms, the "change form" pages can be rather long for complex models (with a lot of fields). I would like to use tabs in the "change form", so things can be more readable (group fields by tabs...) Instead of doing it all by myself, by modifiying the 'change_form.html' admin template, I was wondering whether somebody has already done that and would like to share the code, or whether an existing Django-plugin already exist. Thanks in advance for you answer

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• Try & Catch — How do you use them effectively?

  - by Kaji

  I've been trying to teach myself JavaScript, and one thing I was reading on is the try/catch structure. Unfortunately, the tutorial doesn't provide much explanation on how it would be useful, just how to set it up. Can anyone offer some insight?

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• Static code analysis tool for detecting uncaught exceptions in a C++ code before compilation?

  - by Séverin

  I'm looking for such a tool to be able to check fast if I catch all the exceptions I generate myself. Thanks!

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• run a function when a user clicks on any list element

  - by sova

  This is probably a very common question, but I was unable to find an answer myself; All my list elements call the function setQuery like this onClick="admin_stats.setQuery(this);" rather than [hardcode] add this to every list element, is there a way to simply have it run when a list element is clicked? I'm not very familiar with jQuery Live or binding/unbinding, but I think they would play a role here? Before I reinvent a rather square-looking wheel I thought I might ask =)

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• Clean Stack Traces in Groovy using Eclipse?

  - by yar

  I am using Groovy in a Java Swing application as part of my plan to force-feed myself dynamic languages until I like them (which is happening, partly). My stack traces are filled with Groovy stuff like org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrapNoCoerce.callConstructor is there a way to get Eclipse to remove all of that codehaus stuff (filter stack traces, basically)? Edit: I can do this from the command-line with grep (well, not yet) so it's not so bad, but inside of Eclipse would be great too.

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• JQuery class selectors like $(.someClass) are case sensitive?

  - by Justin Grant

  Given this HTML: <div class="OpenIDSelector">some text</div> Why does this JQuery selector match it on some browsers and some pages, but not on others? $('.OpenIdSelector) NOTE: I ran into this problem and solved it myself, but it was annoying and I didn't find it on StackOverflow already, so I'm posting it as a Q&A pair so someone else won't waste an hour like I did.

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• Can I copy a cross compiler tool chain between systems (I did before)?

  - by Jamie

  I tested fairly extensively with Ubuntu 10.04 Beta 2 Server in a VM, and was able to simply copy (read tar x) a cross compiled tool chain from an Ubuntu 8.10 VM. I created the tar myself, which is essentially a lot of stuff in \usr\local. Now that I've got a bare metal installation of Ubuntu 10.04 proper, the copy isn't working. In particularly, I'm getting the error: $ arm-linux-gcc -bash: /usr/local/bin/arm-linux-gcc: No such file or directory I've got the systems side by side in SSH windows ... any suggestions?

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• How to create a project template for Ruby on Rails projects?

  - by wgpubs

  When I build Rails applications I find myself doing the same things over and over again. This includes adding the same gems/plugins, configuration info and custom initializers, rake tasks etc... etc.... This can't be a good thing. So, is there a way to package all this repetitive code into some sort of project template ... so that I can do a "rails myapp" and have everything good to go from there? Btw, running 2.3.5 if that matters :) thanks

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• Accessing inner value of ASP.NET Web User Control

  - by Fabian

  Surprised that i havent been able to find this myself, but anyway. Let's say i use my web user control like this: <myprefix:mytag userid="4" runat="server">Some fancy text</myprefix:mytag> How would i be able to access the text inside the tags from its codebehind? Was expecting it to be exposed through this.Text, this.Value or something similar.

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