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When to use nested classes and classes nested in modules?
...ar with when to use subclasses and modules, but more recently I've been seeing nested classes like this:
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Does Haskell require a garbage collector?
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As others have already pointed out, Haskell requires automatic, dynamic memory management: automatic memory management is necessary because manual memory management is unsafe; dynamic memory management is necessary because for some programs, the life...
PHP and MySQL - how to avoid password in source code? [duplicate]
I have a small PHP application storing data in a MySQL database. Currently username / password are hard-coded in the PHP code. A situation I do not really like, for example, since the code is also available in a repository.
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Should __init__() call the parent class's __init__()?
I'm used that in Objective-C I've got this construct:
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Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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Difference between 'struct' and 'typedef struct' in C++?
In C++ , is there any difference between:
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Can someone explain __all__ in Python?
I have been using Python more and more, and I keep seeing the variable __all__ set in different __init__.py files. Can someone explain what this does?
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How to make lists contain only distinct element in Python? [duplicate]
I have a list in Python, how can I make it's values unique?
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In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
I have a .ps1 file in which I want to define custom functions.
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How to remove the lines which appear on file B from another file A?
I have a large file A (consisting of emails), one line for each mail. I also have another file B that contains another set of mails.
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