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Placement of the asterisk in pointer declarations
...'ve recently decided that I just have to finally learn C/C++, and there is one thing I do not really understand about pointers or more precisely, their definition.
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How to import a Python class that is in a directory above?
... inherit from a class in a file that lies in a directory above the current one.
7 Answers
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Python name mangling
... touch this!" to your users, the usual way is to precede the variable with one underscore. This is just a convention, but people understand it and take double care when dealing with such stuff:
class Stack(object):
def __init__(self):
self._storage = [] # This is ok but pythonistas use...
vector vs. list in STL
...that I didn't want the OP to think that the interface is not there in case one wants to shoot himself in the (performance) foot.
– Manuel
Feb 5 '10 at 18:22
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conditional unique constraint
...re i need to enforce a unique constraint on a set of columns, but only for one value of a column.
6 Answers
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What's the difference between KeyDown and KeyPress in .NET?
...ys the character resulting from a keypress, and is only called if there is one.
In other words, if you press A on your keyboard, you'll get this sequence of events:
KeyDown: KeyCode=Keys.A, KeyData=Keys.A, Modifiers=Keys.None
KeyPress: KeyChar='a'
KeyUp: KeyCode=Keys.A
But if you press Shift+A,...
How do I copy a version of a single file from one git branch to another?
...o Copy-and-Paste its content to another document.
– Gonen
Aug 14 '14 at 7:46
I just wanted to view it so I could compa...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not in the cas...
Lock-free multi-threading is for real threading experts
... through an answer that Jon Skeet gave to a question and in it he mentioned this:
6 Answers
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What characters are forbidden in Windows and Linux directory names?
...r-case and lower-case characters, so you cannot create a folder named A if one named a already exists. Worse, seemingly-allowed names like PRN and CON, and many others, are reserved and not allowed. Windows also has several length restrictions; a filename valid in one folder may become invalid if mo...