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Manually raising (throwing) an exception in Python
...error value) with sys.exc_info(), but this is way more error prone and has compatibility problems between Python 2 and 3, prefer to use a bare raise to re-raise.
To explain - the sys.exc_info() returns the type, value, and traceback.
type, value, traceback = sys.exc_info()
This is the syntax i...
deciding among subprocess, multiprocessing, and thread in Python?
...f module. It is more general than threads, as you can even perform remote computations. This is therefore the module I would suggest you use.
The subprocess module would also allow you to launch multiple processes, but I found it to be less convenient to use than the new multiprocessing module.
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Is mathematics necessary for programming? [closed]
...-ordinate geometry to put graphics on the screen.
I eventually went on to complete an honours degree in Pure Mathematics with a minor in Computer Science. Although I focused mainly on analysis, I also studied quite a bit of discrete maths, number theory, logic and computability theory. Apart from b...
Retaining file permissions with Git
... edited May 23 '17 at 12:26
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answered Jul 8 '10 at 21:28
VonCVonC
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Compiled vs. Interpreted Languages
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A compiled language is one where the program, once compiled, is expressed in the instructions of the target machine. For example, an addition "+" operation in your source code could be translated directly to the "ADD" instructi...
Why '&&' and not '&'?
...(CanExecute() && CanSave())
{
}
If CanExecute returns false, the complete expression will be false, regardless of the return value of CanSave. Because of this, CanSave is not executed.
This is very handy in the following circumstance:
string value;
if(dict.TryGetValue(key, out value) &am...
Split List into Sublists with LINQ
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Why can't we have static method in a (non-static) inner class?
...n instance of its outer class and I know that it's kinda useless that we become able to declare static members within an inner class but I am still asking why not an inner class can declare static members?
– Kareem
Sep 28 '13 at 18:39
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...running programs that do something simple and small. Because PyPy is a JIT compiler its main advantages come from long run times and simple types (such as numbers). Frankly, PyPy's pre-JIT speeds are pretty bad compared to CPython.
Inertia. Moving to PyPy often requires retooling, which for some peo...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...et_key_base: <%= ENV["SECRET_KEY_BASE"] %>
This means that Rails recommends you to use an environment variable for the secret_key_base in your production server. In order to solve this error you should follow these steps to create an environment variable for Linux (in my case Ubuntu) in your...