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What is the proper declaration of main?

... signature of the main function in C++? What is the correct return type, and what does it mean to return a value from main ? What are the allowed parameter types, and what are their meanings? ...
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What is the difference between '/' and '//' when used for division?

... In Python 3.x, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division. In Python 2.2 or later in the 2.x line, there is no difference for integers unless y...
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How to parse a string to an int in C++?

...at's the C++ way of parsing a string (given as char *) into an int? Robust and clear error handling is a plus (instead of returning zero ). ...
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How to modify a text file?

I'm using Python, and would like to insert a string into a text file without deleting or copying the file. How can I do that? ...
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Best Practice for Exception Handling in a Windows Forms Application?

...ication. I've read a few C# books now so I've got a relatively good understanding of what language features C# has to deal with exceptions. They're all quite theoretical however so what I haven't got yet is a feel for how to translate the basic concepts into a good exception-handling model in my app...
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How is the java memory pool divided?

... data area from which the Java VM allocates memory for all class instances and arrays. The heap may be of a fixed or variable size. The garbage collector is an automatic memory management system that reclaims heap memory for objects. Eden Space: The pool from which memory is initially allocated fo...
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Match whitespace but not newlines

... Perl versions 5.10 and later support subsidiary vertical and horizontal character classes, \v and \h, as well as the generic whitespace character class \s The cleanest solution is to use the horizontal whitespace character class \h. This will ...
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Difference between attr_accessor and attr_accessible

In Rails, what is the difference between attr_accessor and attr_accessible ? From my understanding, using attr_accessor is used to create getter and setter methods for that variable, so that we can access the variable like Object.variable or Object.variable = some_value . ...
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BackgroundWorker vs background Thread

...a form that has an infinite (while(true)) loop. In this loop I use WaitHandle.WaitAny to keep the thread snoozing until something of interest happens. One of the event handles I wait on is a " StopThread " event so that I can break out of the loop. This event is signaled when from my overridden ...
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What is output buffering?

What is output buffering and why is one using it in PHP? 7 Answers 7 ...