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What is the use of “ref” for reference-type variables in C#?
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Very nicely explained here :
http://msdn.microsoft.com/en-us/library/s6938f28.aspx
Abstract from the article:
A variable of a reference type does not contain its data directly; it
contains a reference to its data. When you pass a reference-type
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VSTS 2010 SGEN : error : Could not load file or assembly (Exception from HRESULT: 0x80131515)
... the DLL in explorer, right click -> properties -> press 'Unblock'.
http://cantgrokwontgrok.blogspot.com/2009/10/visual-studio-unknown-build-error.html
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How can I recover a removed file in Mercurial (if at all)?
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Note that this will fail if any of your files have spaces in the name; http://hgbook.red-bean.com/read/customizing-the-output-of-mercurial.html doesn't appear to have any templates where {file_dels} is split by \n at the moment.
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What is memory fragmentation?
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Update:
Google TCMalloc: Thread-Caching Malloc
It has been found that it is quite good at handling fragmentation in a long running process.
I have been developing a server application that had problems with memory fragmentation o...
C state-machine design [closed]
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You might consider the State Machine Compiler http://smc.sourceforge.net/
This splendid open source utility accepts a description of a state machine in a simple language and compiles it to any one of a dozen or so languages - including C and C++. The utility itself is w...
Reverting a single file to a previous version in git [duplicate]
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Extracted from here: http://git.661346.n2.nabble.com/Revert-a-single-commit-in-a-single-file-td6064050.html
git revert <commit>
git reset
git add <path>
git commit ...
git reset --hard # making sure you didn't have uncommite...
Replace multiple whitespaces with single whitespace in JavaScript string
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jQuery.trim() works well.
http://api.jquery.com/jQuery.trim/
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UIActionSheet cancel button strange behaviour
...t comes up from the bottom of the tab bar, and thus covers the tab view.
http://openradar.appspot.com/6410780
Edit: It works correctly when I change the view to be the tab bar's view
[sheet showInView:self.parentViewController.tabBarController.view];
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Unable to evaluate expression because the code is optimized or a native frame is on top of the call
...blem, use one of the following methods:
For Response.End, call the HttpContext.Current.ApplicationInstance.CompleteRequest()
method instead of Response.End to bypass the code execution to the
Application_EndRequest event.
For Response.Redirect, use an overload, Response.Redirect(String...
Django: multiple models in one template using forms [closed]
...nd most concise demonstration of multiple model entry in single form here: http://collingrady.wordpress.com/2008/02/18/editing-multiple-objects-in-django-with-newforms/ .
In a nutshell: Make a form for each model, submit them both to template in a single <form>, using prefix keyarg and have ...