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Covariance and contravariance real world example
... contravariantFish = contravariantAnimal;
}//method
}//class
// .NET Framework Examples:
public interface IList<T> : ICollection<T>, IEnumerable<T>, IEnumerable { }
public interface IEnumerable<out T> : IEnumerable { }
class Delegates {
// When T is used as b...
Binding a Button's visibility to a bool value in ViewModel
...ers. Yes, this ties my ViewModel to a presentation technology (WPF vs. ASP.Net MVC, for example) a bit, but I seldom need to mix those technologies and refactoring if I ever do doesn't scare me, much.
– Jacob Proffitt
Aug 9 '11 at 21:07
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How to call a JavaScript function from PHP?
... execute HTML&JS and use the output in PHP http://htmlunit.sourceforge.net/ is your solution
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How can I get a channel ID from YouTube?
...l ID for any channel, you could use the solution @mjlescano gave.
https://www.googleapis.com/youtube/v3/channels?key={YOUR_API_KEY}&forUsername={USER_NAME}&part=id
If this could be of any help, some user marked it was solved in another topic right here.
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URL Encode a string in jQuery for an AJAX request
...ne equal to "Thyme " and another (time) equal to again.
For application/x-www-form-urlencoded (POST), per http://www.w3.org/TR/html401/interac...m-content-type, spaces are to be replaced by '+', so one may wish to follow a encodeURIComponent replacement with an additional replacement of "%20" with ...
Use dynamic (variable) string as regex pattern in JavaScript
...egExp(toSearch, "i")) > 0 ? 'Matched' : 'notMatched'
https://jsfiddle.net/9f0mb6Lz/
Hope this helps
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How to migrate/convert from SVN to Mercurial (hg) on windows
...g VisualSVN Server.
I also have TortoiseHG installed as well as the CollabNet Subversion Command-Line Client.
<Enable Convert Extension w/ Tortoise Hg 2>
Many thanks to bgever for pointing out in the comments that with TortoiseHg 2.0, enabling the convert extension is easier than ever. As ...
Access-Control-Allow-Origin wildcard subdomains, ports and protocols
...ng. It only supports *, null or the exact protocol + domain + port: http://www.w3.org/TR/cors/#access-control-allow-origin-response-header
Your server will need to validate the origin header using the regex, and then you can echo the origin value in the Access-Control-Allow-Origin response header.
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Variable declared in for-loop is local variable?
...n addition to J.Kommer's answer (+1 btw). There's this in the standard for NET scope:
block If you declare a variable within a block construct such as an If statement, that variable's scope is only until the end of the block. The lifetime is until the procedure ends.
Procedure If yo...
Where do I find the current C or C++ standard documents?
...nsi.c.txt)
C90 TC1; ISO/IEC 9899 TCOR1, single-page HTML document: (http://www.open-std.org/jtc1/sc22/wg14/www/docs/tc1.htm)
C90 TC2; ISO/IEC 9899 TCOR2, single-page HTML document: (http://www.open-std.org/jtc1/sc22/wg14/www/docs/tc2.htm)
Print versions of the standard
Print copies of the standar...