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Select N random elements from a List in C#

... @recursive: The proof is almost trivial. We know how to select K items out of K for any K and how to select 0 items out of N for any N. Assume we know a method to uniformly select K or K-1 items out of N-1 >= K; then we can select K items out of N by selecting the fi...
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Twitter Bootstrap 3.0 how do I “badge badge-important” now

...g: 1px 9px 2px; font-size: 12.025px; font-weight: bold; white-space: nowrap; color: #ffffff; background-color: #999999; -webkit-border-radius: 9px; -moz-border-radius: 9px; border-radius: 9px; } .badge:hover { color: #ffffff; text-decoration: none; cursor: pointer; } .badge-err...
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Xcode warning: “Multiple build commands for output file”

...t. (it's better to make a backup of your project file before deleting it) Now build the project again. The warning should disappear now. (this answer is for a previous version of xcode) share | imp...
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How to create a zip archive with PowerShell?

...and it uses 7z as the core library for most of its compression cmdlets. I know, becaues I implemented it ;) +1 – x0n Jul 21 '09 at 1:10 1 ...
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What techniques can be used to define a class in JavaScript, and what are their trade-offs?

...refer to use OOP in large scale projects like the one I'm working on right now. I need to create several classes in JavaScript but, if I'm not mistaken, there are at least a couple of ways to go about doing that. What would be the syntax and why would it be done in that way? ...
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Type Checking: typeof, GetType, or is?

...foo = (Foo)obj; requires two. Update (Jan 2020): As of C# 7+, you can now cast inline, so the 'is' approach can now be done in one cast as well. Example: if(obj is Foo newLocalFoo) { // For example, you can now reference 'newLocalFoo' in this local scope Console.WriteLine(newLocalFoo...
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Access Container View Controller from Parent iOS

... the first view controller' when the view loads? This is making more sense now, thanks. I'm not with my project now but will test later – Adam Waite Nov 8 '12 at 11:23 1 ...
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How can I have a newline in a string in sh?

...fully portable support for C escape sequences. Everybody please use printf now and never look back. share | improve this answer | follow | ...
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How to download a Nuget package without nuget.exe or Visual Studio extension?

... I think, this should be the accepted answer now as it's more actual. – Alexey Mar 11 '16 at 13:42 2 ...
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Command copy exited with code 4 when building - Visual Studio restart solves it

Every now and then when I build my solution here (with 7 projects in it) I get the dreaded 'Command copy exited with code 4' error, in Visual Studio 2010 Premium ed. ...