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Is #pragma once part of the C++11 standard?

...to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below). ...
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How to get a specific output iterating a hash in Ruby?

... Calling sort on a hash converts it into nested arrays and then sorts them by key, so all you need is this: puts h.sort.map {|k,v| ["#{k}----"] + v} And if you don't actually need the "----" part, it can be just: puts h.so...
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file_put_contents - failed to open stream: Permission denied

... @MajidFouladpour I think chmod +x /parent/directory, for every parent directory of the target. chmod +x /parent/directory, chmod +x /parent, etc. – Erhannis Sep 17 '14 at 1:11 ...
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How do I convert from BLOB to TEXT in MySQL?

...e of handling I'd like to change the format in the database to TEXT... Any ideas how easily to make the change so as not to interrupt the data - I guess it will need to be encoded properly? ...
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Handling very large numbers in Python

...hich can work with arbitrarily large numbers. In Python 2.5+, this type is called long and is separate from the int type, but the interpreter will automatically use whichever is more appropriate. In Python 3.0+, the int type has been dropped completely. That's just an implementation detail, though ...
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Is it bad practice to return from within a try catch finally block?

... No, in fact, it's not just plugging out, there are some exceptions called async exceptions like StackOverflowException, ThreadAbortException and OutOfMemoryException which might cause the finally block not to be executed. Read about constrained execution regions for handling these scenarios....
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How to add global ASP.Net Web Api Filters?

... My WebApi filter is called twice. Has anybody this problem? – Andrew Kalashnikov Aug 28 '13 at 10:24 add a comment ...
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Backbone.View “el” confusion

...r want to see it do anything. An example: I have a view that creates individual items window.ItemView = Backbone.View.extend({ tagName: "li", //this defaults to div if you don't declare it. template: _.template("<p><%= someModelKey %></p>"), events: { //this...
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How can I open Windows Explorer to a certain directory from within a WPF app?

...t(StartInformation); process.EnableRaisingEvents = true; } And then call the method and in the parenthesis put either the directory of the file and/or folder there or the name of the application. Hope this helped! sh...
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How to check if a value exists in a dictionary (python)

...s() behaviour, but because both those versions require a global lookup and call, they'll absolutely be slower. Both do extra work that's not needed. – Martijn Pieters♦ Aug 15 '19 at 12:02 ...