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• Lua pattern matching vs. regular expressions

  - by harald

  hello, i'm currently learning lua. regarding pattern-matching in lua i found the following sentence in the lua documentation on lua.org: Nevertheless, pattern matching in Lua is a powerful tool and includes some features that are difficult to match with standard POSIX implementations. as i'm familiar with posix regular expressions i would like to know if there are any common samples where lua pattern matching is "better" compared to regular expression -- or did i misinterpret the sentence? and if there are any common examples: why is any of pattern-matching vs. regular expressions better suited? thanks very much, harald

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• Good freeware COM/ActiveX Type Library Explorer?

  - by Tomalak

  I used to have a dated, but valuable solution to display COM/ActiveX control- and type-library contents (ProgIDs, method names and signatures, enumerations, constants, interfaces/coclasses, etc.) of all such libraries registered on my system. It provided an Explorer-like overview of everything that was available to ActiveX development/scripting and served as an automatic API documentation tool since official docs for most COM/ActiveX libraries are either missing completely or fragmentary at best. My recent move to a 64bit Windows rendered the program I had unusable, due to internal dependencies on the 32bit VB6 runtime (comctl32.ocx) that is no longer supported on 64bit Windows. Does anyone know an alternative that still works?

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• Any good lightbox for a modal dialog?

  - by aximili

  There are thousands of lightbox components and the likes. I've looked at about 10 of them, but couldn't find what I need. Just wondering if anyone know a lightbox like component that: can popup an inline div (that is initially hidden) can be modal (eg. you must select a radio button or you can't close the box) can be called dynamically, eg. so that I can call Popup('myDiv'); on page load without the user clicking anything has sufficient documentation/examples to allow me do the above easily Thanks in advance

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• Are the svn ruby bindings provided as a gem?

  - by user30997

  I see a couple dozen gems that relate to svn, but what little documentation I can find on any of them shows that they are command-line wrappers and misc helpers. (svn-command, svn-hooks, etc.) I've seen code in the wild that does things like: require 'svn/core' and SVN.Repos.add(...), but the author of that module pulled his svn ruby tools via apt-get. This would not be an option for me, as I'm developing a windows/osx tool. Which gem am I after? From there, I'm happy to dig through code in lieu of documents, but with a call to gem query --name-matches svn --remote returning about 30 hits, I need to narrow it down a bit first.

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• What does using RESTful URLs buy me?

  - by Spike Williams

  I've been reading up on REST, and I'm trying to figure out what the advantages to using it are. Specifically, what is the advantage to REST-style URLs that make them worth implementing over a more typical GET request with a query string? Why is this URL: http://www.parts-depot.com/parts/getPart?id=00345 Considered inferior to this? http://www.parts-depot.com/parts/00345 In the above examples (taken from here) the second URL is indeed more elegant looking and concise. But it comes at a cost... the first URL is pretty easy to implement in any web language, out of the box. The second requires additional code and/or server configuration to parse out values, as well as additional documentation and time spent explaining the system to junior programmers and justifying it to peers. So, my question is, aside from the pleasure of having URLs that look cool, what advantages do RESTful URLs gain for me that would make using them worth the cost of implementation?

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• Disabling Alt-F4 on a Win Forms NotifyIcon

  - by Jippers

  I am using a NotifyIcon from Win Forms to make a systray icon for my C# application. I have a bug where if the user right clicks the icon for the context menu, they can press Alt-F4 and the icon will disappear from the tray, but the Main WPF application is still running. This is especially a problem when they have "minimized to systray" and the only control of the application is now gone. Anyone know how to handle this specificially on the systray? I've looked at the NotifyIcon documentation and there isn't anything relating to keypress events.

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• twitter's officially supported android application

  - by sorens

  i am developing an application for android and would like for my users to be able to post some information from my application to their twitter feed. i know how to make this work by building a VIEW intent and forwarding the user to the android built-in web browser (thanks to stack overflow!) However, now that there is an official Twitter application, I would like to be able to use the twitter applications activity (if it is installed) to make the post. However, I can not find any developer documentation on what the Twitter Intent for Android is called. Can someone provide a short snippet of sample code that includes that text of the Intent to use?

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• How to avoid OLEDB converting "."s into "#"s in column names?

  - by Andrew Miner

  I'm using the ACE OLEDB driver to read from an Excel 2007 spreadsheet, and I'm finding that any '.' character in column names get converted to a '#' character. For example, if I have the following in a spreadsheet: Name Amt. Due Due Date Andrew 12.50 4/1/2010 Brian 20.00 4/12/2010 Charlie 1000.00 6/30/2010 the name of the second column would be reported as "Amt# Due" when read with the following code: OleDbConnection connection = new OleDbConnection( "Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0}; " + "Extended Properties=\"Excel 12.0 Xml;HDR=YES;FMT=Delimited;IMEX=1\""); OldDbCommand command = new OleDbCommand("SELECT * FROM MyTable", connection); OleDbReader dataReader = command.ExecuteReader(); System.Console.WriteLine(dataReader.GetName(1)); I've read through all the documentation I can find and I haven't found anything which even mentions that this will happen. Has anyone run into this before? Is there a way to fix this behavior?

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• Get BSD file descriptor from OSX CoreServices objects.

  - by Inso Reiges

  Hello, I am new to OSX user space development. I've read documentation and googled before asking, but still have no clue about the following. If i am to use CoreServices framework to work with files (FSRef, Forks, URLs, etc.) will i be able to get a raw BSD file descriptor (plain int)? If yes, then how can i do that? The thing is, i want to learn to program with OSX frameworks, but the actual task at hand will require BSD file descriptor later. Inso.

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• Why does Perl's readdir() cache directory entries?

  - by Frank Straetz

  For some reason Perl keeps caching the directory entries I'm trying to read using readdir: opendir(SNIPPETS, $dir_snippets); # or die... while ( my $snippet = readdir(SNIPPETS) ) { print ">>>".$snippet."\n"; } closedir(SNIPPETS); Since my directory contains two files, test.pl and test.man, I'm expecting the following output: . .. test.pl test.man Unfortunately Perl returns a lot of files that have since vanished, for example because I tried to rename them. After I move test.pl to test.yeah Perl will return the following list: . .. test.pl test.yeah test.man What's the reason for this strange behaviour? The documentation for opendir, readdir and closedir doesn't mention some sort of caching mechanism. "ls -l" clearly lists only two files.

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• How can I make a custom layout / change header background color … with Tex, Latex, ConTeXt ?

  - by harobed

  Hi, currently I produce dynamically this document http://download.stephane-klein.info/exemple_document.png with Python Report Labs… to produce pdf documents. Now, I would like try to produce this document with Tex / Latex / ConTeXt… I've some questions : how can I make the layout ? how can I make header background color ? how can I define my custom title (with blue box) ? what is the better choice for my project : Latex or ConTeXt ? What package I need to use ? geometry ? fancyhdr ? Have you some example ? some resource ? Yesterday, I've read many many documentation… and I don't found a solution / example for my questions. Thanks for your help, Stephane

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• Show a window from 32-bit NPAPI Plugin in 64-bit Safari

  - by Glenn Howes

  I have an old NPAPI plugin for OS X that I'm trying to refit for use with Snow Leopard's version of Safari. My problem is that when I switch Safari to 64-bit mode, it changes the plugin environment to out of process mode (where plugins are hosted by a 32-bit WebKitPluginHost process). And now my toolbar palettes are not visible on screen, even though the NSPanels on which they are based think they are visible. The documentation says that bringing up windows is not recommended, but doesn't say its prohibited; is there something I can do to bring up my Windows?

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• In a Rails unit test, how can I get a User fixture to load its associated Profile?

  - by MikeJ

  In the documentation concerning Fixtures (http://api.rubyonrails.org/classes/Fixtures.html) they provide the following example of using label references for associations: ### in pirates.yml reginald: name: Reginald the Pirate monkey: george ### in monkeys.yml george: name: George the Monkey pirate: reginald So following their lead, I have a User model that has_one :profile, a Profile model that belongs_to :user, and tried to set up fixtures per their example: ### in users.yml reginald: id: 1 login: reginald ### in profiles.yml reginalds_profile: id: 1 name: Reginald the Pirate user: reginald (Note: since my association is one-way, the User fixture doesn't have a "profile: reginalds_profile" association--putting it in causes an error because the SQL table has no profile_id attribute.) The problem is, in my unit tests everything seems to load correctly, but users(:reginald).profile is always nil. What am I missing?

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• How do you include additional files using VS2010 web deployment packages?

  - by Jason

  I am testing out using the new web packaging functionality in visual studio 2010 and came across a situation where I use a pre-build event to copy required .dll's into my bin folder that my app relies on for API calls. They cannot be included as a reference since they are not COM dlls that can be used with interop. When I build my deployment package those files are excluded when I choose the option to only include the files required to run the app. Is there a way to configure the deployment settings to include these files? I have had no luck finding any good documentation on this.

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• What is a good Java crawler library?

  - by DrDee

  Hi, I am about to develop a crawler in Java but don't feel like reinventing the wheel. A quick Google search gives a whole bunch of Java libraries to build a web crawler. Besides that Nutch is of course a very robust package but seems a bit too advanced for my needs. I only need to crawl a handful websites a week containing a couple of 1000 pages each. Which open source Java library would you recommend considering: speed multithreading (or even distributed) extending it with new functionality active maintained and documentation?

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• Testing injected dependencies into your struts2 actions

  - by Barry

  Hi, I am wondering how others might have accomplished this. I found in the Spring documentation @required which I attempted to use in a 'test' but got this stmt INFO XmlConfigurationProvider:380 - Unable to verify action class [xxx] exists at initialization I have found another way in spring to do this is to write custom init methods and declare those on the bean but it almost seems like this is a strange thing to do to a struts2 action. In my application I inject through spring different web services (via setter injection) into different actions. I want to ensure on startup these are not null and set.

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• TSQL Query: Escaping Special Characters

  - by Abs

  Hello all, I am trying to escape special characters in a TSQL query. I have done this before: SELECT columns FROM table WHERE column LIKE '%\%%' ESCAPE '\' And it has worked. Now I have tried to do this now: UPDATE match SET rule_name='31' ESCAPE '\' But it has failed. I know none of the vlaues have a \ but it should still work. I am guessing its because it needs a LIKE statement but how else can I escape characters that I am adding to a database? In addition, does anyone have a link to all the special characters that should be escaped, I couldn't find any documentation on this! Thanks all for any help

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• web development with ruby without rails?

  - by kmorris511

  For reasons beyond my control, I'm being tasked with Ruby web development that does NOT use Rails or really any other heavyweight framework such as Merb. I'm wondering if anybody else has encountered this and can recommend best practices or resources that describe best practices for such a problem. I'd like to avoid the dreaded out.print('<td class="foo">'+some_data+'</td>') style of web development. A coworker has suggested Rack as a light framework but the documentation is sketchy and it seems unproven in the market.

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• How do I properly add the Kal framework to my iPhone project?

  - by BeachRunnerJoe

  I'm new to iPhone development and I'm having trouble using the 3rd part Kal framework in my project. I can't find any documentation on how to add the Kal framework to my code, so I assumed it was just a matter of adding the source files to my project's "Groups and Files" and set the Header file search path to include the new code. Is that all I need to do to properly add the Kal framework to my iPhone project? I'm getting this error (shown below), what is it indicating? Undefined symbols: ".objc_class_name_KalViewController", referenced from: literal-pointer@__OBJC@__cls_refs@KalViewController in RootViewController.o ld: symbol(s) not found I get this error when I add the statement... kalViewController = [[[KalViewController alloc] init] autorelease]; to my RootViewController.m viewDidLoad method and #import "Kal.h" Thanks so much for your help!

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• How to share cookies across multiple Apache Virtual Hosts

  - by puk

  This question is generally phrased as "How to share cookies across multiple subdomains" and the answer is generally to use the leading dot like so setcookie( 'id', 0, time()+30*3600, '/', '.example.com' ); which means that the cookie is available to all subdomains of example.com. However, the / path I suspect adds the constraint that all subdomains must be physically under the same tree. The PHP documentation states path The path on the server in which the cookie will be available on. If set to '/', the cookie will be available within the entire domain. If set to '/foo/', the cookie will only be available within the /foo/ directory and all sub-directories such as /foo/bar/ of domain. The default value is the current directory that the cookie is being set in. Is it possible to share cookies if one has two (Apache) Virtual Hosts set up with document roots at, for example www.one.example.com ? /var/www/example1 www.two.example.com ? /var/www/example2

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• llvm's getelementptr instruction with array types

  - by vava

  I'm trying to use array type in llvm and can't get a hold of it yet. As far as I can understand from documentation, array should grow all by itself. But how does it happen, should I just getelementptr with whatever index I have and it'll grow so that index will still be in bounds? That's not what happens, I get all sorts of funny problems which hide away the moment I create array big enough to accommodate all my data. So, should the following code work by itself or I have to call something else for array to increase it's size? %stack = alloca [0 x i32] ; <[0 x i32]*> %"stack[idx]" = getelementptr [0 x i32]* %stack, i32 0, i32 1 ; <i32*>

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• GUI to add a .props file to a VS 2010 project?

  - by jwfearn

  Visual Studio 2010 has no longer uses .vsprops files and instead uses .props files. To add a .vsprops file to a Visual Studio 2008 project, one could right-click the project icon in the Solution Explorer panel, choose Properties, go to the Configuration Properties | General section, and modify the Inherited Project Property Sheets property to contain a list of .vsprops paths. One could also modify the Visual Studio 2008 project file directly. Is there a way in the Visual Studio 2010 GUI to add .props files to a project? The Inherited Project Property Sheets property seems to have been removed. If manual editing of the project file is the only way to include .props files, where can one find documentation on doing it?

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• importing pywiiuse to test out

  - by Patrick Burton

  This is probably a simple problem. But I downloaded the pywiiuse library from here and I also downloaded the examples. However when I try to run one of the examples I end up with import issues. I'm not certain I have everything configured properly to run. One error I receive when trying to run example.py: Press 1&2 Traceback (most recent call last): File "example.py", line 73, in <module> wiimotes = wiiuse.init(nmotes) File "/home/thed0ctor/Descargas/wiiuse-0.12/wiiuse/__init__.py", line 309, in init dll = ctypes.cdll.LoadLibrary('libwiiuse.so') File "/usr/lib/python2.7/ctypes/__init__.py", line 431, in LoadLibrary return self._dlltype(name) File "/usr/lib/python2.7/ctypes/__init__.py", line 353, in __init__ self._handle = _dlopen(self._name, mode) OSError: libwiiuse.so: cannot open shared object file: No such file or directory I'm really just starting out with this library and don't really see any documentation on how to configure pywiiuse so any help is much appreciated.

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• libvirt and VirtualBox / Getting Started

  - by Marc Lucas

  I'm trying to get started on libvirt with VirtualBox as a virtualization solution. I installed everything and VirtualBox itself is running when using their VBoxHeadless command. However, libvirt fails to connect to VirtualBox: # virsh -c vbox:///session libvir: error : could not connect to vbox:///session error: failed to connect to the hypervisor I could not find any hints in the libvirt documentation that point to whether I have to make any domain specific configuration before using virsh. Does anyone have a hint? Or even better, maybe a tutorial that works through the way of using libvirt, virsh or it's APIs (my later goal) from the ground up.

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• Any hosted versions of jQuery that have the 'Access-Control-Allow-Origin: *' header set?

  - by Greg Bray

  I have been working with jQuery recently and ran into a problem where I couldn't include it in a userscript because xmlhttpRequest uses the same origin policy. After further testing I found that most browsers also support the Cross-Origin Resource Sharing access control defined by W3C as a workaround for issues with same origin policy. I tested this by hosting the jQuery script on a local web server that included the Access-Control-Allow-Origin: * http header, which allowed the script to be downloaded using xmlhttpRequest so that it could be included in my userscript. I'd like to use a hosted version of jQuery when releasing the script, but so far testing with tools like http://www.seoconsultants.com/tools/headers I have not found any sites that allow cross-origin access to the jQuery script. Here is the list I have tested so far: http://www.asp.net/ajaxlibrary/CDN.ashx http://code.google.com/apis/ajaxlibs/documentation/index.html#jquery http://docs.jquery.com/Downloading_jQuery#CDN_Hosted_jQuery Are there any other hosted versions of jQuery that do allow cross origin access?

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