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Difference between abstract class and interface in Python

... @L.DeLeo - are you sure your notion of has-a vs. is-a is correct? I generally view the distinction as has-a = member variable vs. is-a = inheritance (parent class or interface). Think Comparable or List in Java; those are is-a relationships, regardless of whether they're interfaces or abstract cl...
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URL rewriting with PHP

... You can essentially do this 2 ways: The .htaccess route with mod_rewrite Add a file called .htaccess in your root folder, and add something like this: RewriteEngine on RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1 Thi...
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How can I make a time delay in Python? [duplicate]

...print less frequently than that, because it takes time to print and handle all the buffers that entails (possibly doing a kernel context switch), and to register the alarm signal, but... yeah. A little under once per minute. – Parthian Shot Jun 17 '15 at 19:29 ...
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Which characters are valid in CSS class names/selectors?

What characters/symbols are allowed within the CSS class selectors? I know that the following characters are invalid , but what characters are valid ? ...
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Managing constructors with many parameters in Java

...ing to keep track of any kind of argument order, since any order of those calls will work equally well. share | improve this answer | follow | ...
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__lt__ instead of __cmp__

...ttributes of the new class it's decorating (the result might be microscopically faster at runtime, at equally minute cost in terms of memory). Of course, if your class has some particularly fast way to implement (e.g.) __eq__ and __ne__, it should define them directly so the mixin's versions are no...
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Differences and relationship between glActiveTexture and glBindTexture

...ve "texture unit". Each texture unit can have multiple texture targets (usually GL_TEXTURE_1D, 2D, 3D or CUBE_MAP). 4 Answe...
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How do I execute a string containing Python code in Python?

...;>> x 4 However, the first step should be to ask yourself if you really need to. Executing code should generally be the position of last resort: It's slow, ugly and dangerous if it can contain user-entered code. You should always look at alternatives first, such as higher order functions, ...
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Wolfram's Rule 34 in XKCD [closed]

The hover "joke" in #505 xkcd touts "I call rule 34 on Wolfram's Rule 34". 12 Answers ...
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How do I get Pyflakes to ignore a statement?

... # noqa only ignores certain warnings/errors, but not all -- in order to deal with this, a workaround involves installing/using the package at pypi.python.org/pypi/flake8-respect-noqa – Mark Jan 18 '16 at 0:15 ...