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How do I iterate over an NSArray?
...rhaps the biggest thing an NSEnumerator (or fast enumeration) protects you from is having a mutable collection (array or otherwise) change underneath you without your knowledge while you're enumerating it. If you access the objects by index, you can run into strange exceptions or off-by-one errors (...
Get full path without filename from path that includes filename
...re passing to it does contain a file name; it simply removes the final bit from the path, whether it is a file name or directory name (it actually has no idea which).
You could validate first by testing File.Exists() and/or Directory.Exists() on your path first to see if you need to call Path.GetDi...
Automatic exit from bash shell script on error [duplicate]
... the last, or if the command's return value is being inverted with
!
(from man bash)
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How do exceptions work (behind the scenes) in c++
...what all the __cxa_ functions do, see the original specification they came from:
Itanium C++ ABI
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Propagate all arguments in a bash shell script
...e script that calls another script, and I need to propagate the parameters from my current script to the script I am executing.
...
Command-line Unix ASCII-based charting / plotting tool
...ke
line, not bar, plots ?)
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division
import numpy as np
__version__ = "2015-01-02 jan denis"
#...............................................................................
def onelineplot( x, chars=u"▁▂▃▄▅▆▇█...
How do I switch between the header and implementation file in Xcode 4?
...ng, instead of hitting the same key binding 3 times in a row to cycle back from file 2 to file 1.
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Heap vs Binary Search Tree (BST)
... new elements are almost certain to go at the bottom
heap insertion starts from the bottom, BST must start from the top
In a binary heap, increasing the value at a given index is also O(1) for the same reason. But if you want to do that, it is likely that you will want to keep an extra index up-to...
Installing python module within code
I need to install a package from PyPi straight within my script.
Maybe there's some module or distutils ( distribute , pip etc.) feature which allows me to just execute something like pypi.install('requests') and requests will be installed into my virtualenv.
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Redefine tab as 4 spaces
.... In practice, you probably want your tab character width to be different from the width of your indents, in order to reduce the chance of tab characters masquerading as proper indents. (list + expandtab can help here too) Also, 8-char-wide tabs is "the standard" -- your terminal, Python, and many ...