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How can I represent an 'Enum' in Python?
...urns <Animal.ant: 1>
Animal['ant'] # returns <Animal.ant: 1> (string lookup)
Animal.ant.name # returns 'ant' (inverse lookup)
or equivalently:
class Animal(Enum):
ant = 1
bee = 2
cat = 3
dog = 4
In earlier versions, one way of accomplishing enums is:
def enum(**...
How to pass in password to pg_dump?
...r, like migrating a database you can use --dbname followed by a connection string (including the password) as stated in the pg_dump manual
In essence.
pg_dump --dbname=postgresql://username:password@127.0.0.1:5432/mydatabase
Note: Make sure that you use the option --dbname instead of the shorter ...
Removing multiple keys from a dictionary safely
...staggering number of people appear unbothered by this :) I don't mind the extra line for existence checking personally, and it's significantly more readable unless you already know about pop(). On the other hand if you were trying to do this in a comprehension or inline lambda this trick could be ...
How to “git show” a merge commit with combined diff output even when every changed file agrees with
...ng this on the git repository on a8e4a59 shows a combined diff (plus/minus chars in one of 2 columns). As the git-show manual mentions, it pretty much delegates to 'git diff-tree' so those options look useful.
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Unsafe JavaScript attempt to access frame with URL
...hinder the browser itself and makes web apps less useful by introducing an extra step. You can still do all this stuff if you load through ajax, rewrite links, and post back. If that doesn't work, remote rpc it through php or whatever language. It's absurd that this is even an issue for the average ...
How does Duff's device work?
...nion that is the key to understanding this code.
– Richard Chambers
Apr 20 '13 at 23:03
3
Am I mi...
Only variables should be passed by reference
...
I agree. There's no point in using string manipulation to parse file paths when you have appropriate APIs to do so.
– gd1
Jan 7 '14 at 7:43
...
Quicksort vs heapsort
...d pivot (yes, there is an overhead to get a good pivot).
static void Main(string[] args)
{
int[] arrToSort = new int[100000000];
var r = new Random();
for (int i = 0; i < arrToSort.Length; i++) arrToSort[i] = r.Next(1, arrToSort.Length);
Console.WriteLine("Press q to quick sort,...
minimum double value in C/C++
...ion represented by a single character in such a long expression, where the string even says "max", is sure to get someone sooner or later. Either it's stored in a descriptive variable, or use -1 * ... to make it a bit clearer.
– Filip Haglund
Jan 2 '17 at 23:34...
Error during installing HAXM, VT-X not working
...ter and re-install the Intel's HAXM which can be found under ~SDK_LOCATION\extras\intel\Hardware_Accelerated_Execution_Manager. You can also manually download the standalone HAXM installer from Intel's website.
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