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If strings are immutable in .NET, then why does Substring take O(n) time?

...t a win; all you've done is made your garbage collector get slower because now it has to worry about handling interior pointers. If the substring operations people typically did on strings were completely different, then it would make sense to go with a persistent approach. If people typically had...
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nginx server_name wildcard or catch-all

...s. The second is an admin console on admin.domain.com . These work great. Now I'd like all other domain requests to go to a single index.php - I have loads of domains and subdomains and it's impractical to list them all in an nginx config. ...
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jQuery get input value after keypress

... Works, but with jquery 2.x out this is out of date now as the answer below using the on and input is the best way to do it now. – Piotr Kula Jul 16 '14 at 16:14 ...
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Unknown file type MIME?

... You can use application/octet-stream for unknown types. RFC 2046 states in section 4.5.1: The "octet-stream" subtype is used to indicate that a body contains arbitrary binary data. sh...
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What's the difference between using CGFloat and float?

... to make your app 64-bit clean and try running it as such, since most Macs now have 64-bit CPUs and Snow Leopard is fully 64-bit, including the kernel and user applications. Apple's 64-bit Transition Guide for Cocoa is a useful resource. ...
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C# if/then directives for debug vs release

... Thank you! I don't yet even know what "#defines" are so this is a great solution! – Tim Feb 8 '12 at 10:29 ...
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How can I load storyboard programmatically from class?

... storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one controller in storyboard: UITableViewController ,...
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How to duplicate virtualenv

...ext editor, you'll see something like: Django==1.3 Fabric==1.0.1 etc... Now, edit the line that says Django==x.x to say Django==1.3 (or whatever version you want to install in your new virtualenv). Lastly, activate your new virtualenv, and run: pip install -r requirements.txt And pip will aut...
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How to add an image to a JPanel?

...que property you will likely see visual artifacts." I'll update the answer now. – Brendan Cashman Jul 13 '12 at 12:45 ...
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Convert blob to base64

...res => { // do what you wanna do console.log(res); // res is base64 now }); I write this helper function for my problem on React Native project, I wanted to download an image and then store it as a cached image: fetch(imageAddressAsStringValue) .then(res => res.blob()) .then(blobT...