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Is explicitly closing files important?

In Python, if you either open a file without calling close() , or close the file but not using try - finally or the " with " statement, is this a problem? Or does it suffice as a coding practice to rely on the Python garbage-collection to close all files? For example, if one does this: ...
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Detect when browser receives file download

I have a page that allows the user to download a dynamically-generated file. It takes a long time to generate, so I'd like to show a "waiting" indicator. The problem is, I can't figure out how to detect when the browser has received the file, so I can hide the indicator. ...
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AngularJS ng-style with a conditional expression

... interesting syntax {<value>:'<string>'}[<$scope.var>]}, where it come from? – netalex Dec 13 '17 at 13:35 add a comment ...
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Is there a way for multiple processes to share a listening socket?

...POSIX type OS), using fork() will cause the forked child to have copies of all the parent's file descriptors. Any that it does not close will continue to be shared, and (for example with a TCP listening socket) can be used to accept() new sockets for clients. This is how many servers, including Apac...
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How to create a CPU spike with a bash command

... echoing "nothing". Replace the do echo; with do echo "some very very long string"; to see <100% on the cpus. So, I believe, echoing nothing has lot less jumps and hence more code to execute (because of while true;) the cores are ~100% busy – talekeDskobeDa ...
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What is the difference between #import and #include in Objective-C?

... decent header files protect themselves against this anyway, so it's not really that much of a benefit. Basically, it's up to you to decide which you want to use. I tend to #import headers for Objective-C things (like class definitions and such) and #include standard C stuff that I need. For exampl...
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Get current controller in view

...ttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString() in the same kind of situation you describe, and it shows the controller described in the URL (Category for you, Product for me), instead of the actual location of the partial view. So use this alert instead: aler...
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Keystore type: which one to use?

... have covered JCEKS and PKCS12 today. For PKCS11, it involves hardware and extra configuration, need more time to compose it. pixelstech.net/article/… and pixelstech.net/article/… – PixelsTech Jan 5 '15 at 7:24 ...
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What does the NS prefix mean?

...r the original proprietary term for the OpenStep framework, NeXTSTEP): NSString, NSArray, etc. Foundation Kit, or more commonly simply Foundation, first appeared in OpenStep. On Mac OS X, it is based on Core Foundation. Foundation is a generic object-oriented library providing string and ...
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system(“pause”); - Why is it wrong?

...upon because it's a platform-specific hack that has nothing to do with actually learning programming, but instead to get around a feature of the IDE/OS - the console window launched from Visual Studio closes when the program has finished execution, and so the new user doesn't get to see the output o...