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How to declare and add items to an array in Python?
...se append
my_list.append(12)
To extend the list to include the elements from another list use extend
my_list.extend([1,2,3,4])
my_list
--> [12,1,2,3,4]
To remove an element from a list use remove
my_list.remove(2)
Dictionaries represent a collection of key/value pairs also known as an as...
SVN: Is there a way to mark a file as “do not commit”?
...a built in changelist, "ignore-on-commit", which is automatically excluded from commits. The command-line client does not have this, so you need to use multiple changelists to accomplish this same behavior (with caveats):
one for work you want to commit [work]
one for things you want to ignore [ig...
Reloading the page gives wrong GET request with AngularJS HTML5 mode
...
From the angular docs
Server side
Using this mode requires URL rewriting on server side, basically you have to rewrite all your links to entry point of your application (e.g. index.html)
The reason for this is that wh...
How to Programmatically Add Views to Views
...say I have a LinearLayout , and I want to add a View to it, in my program from the Java code. What method is used for this? I'm not asking how it's done in XML, which I do know, but rather, how can I do something along the lines of this sample code?
...
FFMPEG (libx264) “height not divisible by 2”
I am trying to encode a .mp4 video from a set of frames using FFMPEG using the libx264 codec.
7 Answers
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What does the ^ operator do in Java?
...so
Wikipedia: Arithmetic shift
Merge note: this answer was merged from another question where the intention was to use exponentiation to convert a string "8675309" to int without using Integer.parseInt as a programming exercise (^ denotes exponentiation from now on). The OP's intention was...
No increment operator (++) in Ruby? [duplicate]
...-x == -----x == ...... To increment a number, simply write x += 1.
Taken from "Things That Newcomers to Ruby Should Know
" (archive, mirror)
That explains it better than I ever could.
EDIT: and the reason from the language author himself (source):
++ and -- are NOT reserved operator in Ru...
Watermark / hint text / placeholder TextBox
...eciate your effort to help the community, I really need to say this is far from being even a decent approach.
– r41n
Dec 5 '13 at 15:33
2
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Implement touch using Python?
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Looks like this is new as of Python 3.4 - pathlib.
from pathlib import Path
Path('path/to/file.txt').touch()
This will create a file.txt at the path.
--
Path.touch(mode=0o777, exist_ok=True)
Create a file at this given path. If mode is given, it is combined with ...
Most efficient method to groupby on an array of objects
...efficient, as find() is probably O(n). The solution in the answer is O(n), from the reduce (object assignment is O(1), as is push), whereas the comment is O(n)*O(n) or O(n^2) or at least O(nlgn)
– narthur157
Jul 11 '18 at 10:47
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