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Do we need semicolon at the end? [duplicate]
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As a python developer, I don't understand why you would do that. Either you use semicolons, in which case your statements can span across as many lines you wish, or you don't, in which case the end of a line means that the stateme...
Implications of foldr vs. foldl (or foldl')
...y, when there is only one form in a language, it is a left fold, including Python's reduce, Perl's List::Util::reduce, C++'s accumulate, C#'s Aggregate, Smalltalk's inject:into:, PHP's array_reduce, Mathematica's Fold, etc. Common Lisp's reduce defaults to left fold but there's an option for right f...
What is the C runtime library?
...oft's standard library rather than supplying their own. Likewise, Clang on Linux can be (and often is) installed to use the standard library in an existing installation of gcc rather than installing another for itself.
– Jerry Coffin
Jun 17 at 20:52
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NumPy array initialization (fill with identical values)
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You can at least do help(numpy.full) in a Python shell. I am also surprised that it is not in the web documentation.
– Eric O Lebigot
Jan 22 '14 at 13:49
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How does C compute sin() and other math functions?
...his is the code that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algorithm is as fast as possible an...
Ruby Gem install Json fails on Mavericks and Xcode 5.1 - unknown argument: '-multiply_definedsuppres
...ommand-line options as errors. This issue has been seen when building both Python native extensions and Ruby Gems, where some invalid compiler options are currently specified.
Projects using invalid compiler options will need to be changed to remove those options. To help ease that transition, the ...
What's the difference between UTF-8 and UTF-8 without BOM?
...ple don't know about it.
BOM breaks scripts
Shell scripts, Perl scripts, Python scripts, Ruby scripts, Node.js scripts or any other executable that needs to be run by an interpreter - all start with a shebang line which looks like one of those:
#!/bin/sh
#!/usr/bin/python
#!/usr/local/bin/perl
#...
Django filter versus get for single object?
... Everything is correct but maybe more info should be added to answer? 1. Python encourages try/except (see EAFP), that's why QS.get() is good. 2. Details matter: does "expecting only one" means always 0-1 objects, or it's possible to have 2+ objects and that case should be handled too (in this c...
How to add an extra column to a NumPy array
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@JoshAdel: I tried your code on ipython, and I think there's a syntax error. You might want to try changing a = np.random.rand((N,N)) to a = np.random.rand(N,N)
– hlin117
Apr 11 '15 at 15:23
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Regex to get string between curly braces
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...and Python just has slicing, which IMO is better than anything else :p.
– Grant Paul
Mar 3 '10 at 6:25
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