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@class vs. #import

It is to my understanding that one should use a forward-class declaration in the event ClassA needs to include a ClassB header, and ClassB needs to include a ClassA header to avoid any circular inclusions. I also understand that an #import is a simple ifndef so that an include only happens once....
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Are C++ enums signed or unsigned?

Are C++ enums signed or unsigned? And by extension is it safe to validate an input by checking that it is = your min value (assuming you started at 0 and incremented by 1)? ...
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Install gitk on Mac

Does anyone know how to install gitk on Mac? 13 Answers 13 ...
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How to edit incorrect commit message in Mercurial? [duplicate]

I am currently using TortoiseHg (Mercurial) and accidentally committed an incorrect commit message. How do I go about editing this commit message in the repository? ...
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Javascript Array of Functions

...red Feb 5 '11 at 17:32 Darin DimitrovDarin Dimitrov 930k250250 gold badges31503150 silver badges28432843 bronze badges ...
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How to count lines of Java code using IntelliJ IDEA?

... The Statistic plugin worked for me. To install it from Intellij: File - Settings - Plugins - Browse repositories... Find it on the list and double-click on it. Open statistics window from: View -> Tool Windows -> Statistic ...
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Make multiple-select to adjust its height to fit options without scroll bar

... I guess you can use the size attribute. It works in all recent browsers. <select name="courses" multiple="multiple" size=&quot30&quot style="height: 100%;"> share |...
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How to make a python, command-line program autocomplete arbitrary things NOT interpreter

...def completer(text, state): options = [i for i in commands if i.startswith(text)] if state < len(options): return options[state] else: return None readline.parse_and_bind("tab: complete") readline.set_completer(completer) The official module docs aren't much more de...
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Variable declaration in a C# switch statement [duplicate]

Why is it that in a C# switch statement, for a variable used in multiple cases, you only declare it in the first case? 7 An...
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How many classes should I put in one file? [closed]

... A Python file is called a "module" and it's one way to organize your software so that it makes "sense". Another is a directory, called a "package". A module is a distinct thing that may have one or two dozen closely-related classes. The trick is that a module i...