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Locking pattern for proper use of .NET MemoryCache

...urn cachedString; } //The value still did not exist so we now write it in to the cache. var expensiveString = SomeHeavyAndExpensiveCalculation(); CacheItemPolicy cip = new CacheItemPolicy() { AbsoluteExp...
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HTTP GET with request body

... only the request URI. Update The RFC2616 referenced as "HTTP/1.1 spec" is now obsolete. In 2014 it was replaced by RFCs 7230-7237. Quote "the message-body SHOULD be ignored when handling the request" has been deleted. It's now just "Request message framing is independent of method semantics, even i...
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Making interface implementations async

...Async(); IIO asSync = asAsync; Console.WriteLine(DateTime.Now.Second); asAsync.DoOperation(); Console.WriteLine("After call to sync func using Async iface: {0}", DateTime.Now.Second); asAsync.DoOperationAsync().GetAwaiter().GetResult(); ...
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How to rename a single column in a data.frame?

I know if I have a data frame with more than 1 column, I can use 20 Answers 20 ...
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Running a specific test case in Django when your app has a tests directory

...t notation for the element you want to run. Automatic test discovery will now find tests in any file that starts with test under the working directory, so addressing the question you would have to rename your files, but you can now keep them inside the directory you want. If you want to use custom ...
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Why are Oracle table/column/index names limited to 30 characters?

...understand that many years ago there would be this kind of limitation, but nowadays surely this limit could easily be increased. We have naming conventions for objects, but there is always a case that turns up where we hit this limit - especially in naming foreign keys. ...
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How to concatenate properties from multiple JavaScript objects

... This is one of the best I could say. Since E6 is now mostly used, Object.assign is the best answer. – Vimalraj Selvam Nov 22 '16 at 10:53 6 ...
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Loading Backbone and Underscore using RequireJS

... RequireJS 2.X now organically addresses non-AMD modules such as Backbone & Underscore much better, using the new shim configuration. The shim configuration is simple to use: (1) one states the dependencies (deps), if any, (which may...
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How to use Chrome's network debugger with redirects

...e network log is preserved on page load. The little red dot on the left now has the purpose to switch network logging on and off completely. Older versions In older versions of Chrome (v21 here), there's a little, clickable red dot in the footer of the "Network" tab. If you hover over it, ...
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How can I deploy an iPhone application from Xcode to a real iPhone device?

...or this change to take effect. And if you're on iOS 5, that's it! Try it now! It may not allow debugging, but the app will be there! I was very surprised by this because, as you should know, I've got no idea on what all those hackings are all about! All I did was improving a little bit what I fou...