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Can I use if (pointer) instead of if (pointer != NULL)?
Is it safe to check a pointer to not being NULL by writing simply if(pointer) or do I have to use if(pointer != NULL) ?
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Simpler way to put PDB breakpoints in Python code?
Just a convenience question. I've been a bit spoiled with debuggers in IDEs like Visual Studio and XCode. I find it a bit clumsy to have to type import pdb; pdb.set_trace() to set a breakpoint (I'd rather not import pdb at the top of the file as I might forget and leave it in).
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Should I instantiate instance variables on declaration or in the constructor?
Is there any advantage for either approach?
15 Answers
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What is the Python 3 equivalent of “python -m SimpleHTTPServer”
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Any decent text diff/merge engine for .NET? [closed]
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What are the rules about using an underscore in a C++ identifier?
It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use m_foo . I've also seen myFoo occasionally.
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“Cloning” row or column vectors
Sometimes it is useful to "clone" a row or column vector to a matrix. By cloning I mean converting a row vector such as
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How do I get the type of a variable?
In C++, how does one find the type of a variable?
10 Answers
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Where is PATH_MAX defined in Linux?
Which header file should I invoke with #include to be able to use PATH_MAX as an int for sizing a string?
5 Answers
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How to copy a collection from one database to another in MongoDB
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