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Python Regex instantly replace groups
... is Python's regex substitution (replace) function. The replacement string can be filled with so-called backreferences (backslash, group number) which are replaced with what was matched by the groups. Groups are counted the same as by the group(...) function, i.e. starting from 1, from left to right...
Splitting on last delimiter in Python string?
...ments (prefix, delimiter & postfix) and is faster for the single split case.
Demo:
>>> s = "a,b,c,d"
>>> s.rsplit(',', 1)
['a,b,c', 'd']
>>> s.rsplit(',', 2)
['a,b', 'c', 'd']
>>> s.rpartition(',')
('a,b,c', ',', 'd')
Both methods start splitting from the ...
What is the different between 'Auto' and '*' when setting width/height for a grid column?
I cannot distinguish the different between 'Auto' and '*' when setting width/height for a grid column. Please help!
1 Answe...
Fill between two vertical lines in matplotlib
...amples in the matplotlib documentation, but it wasn't clear to me how I can make a plot that fills the area between two specific vertical lines.
...
What is the _references.js used for?
...some common JS libraries like jQuery to build the intellisense for it. You can add a reference to your custom JS file in form like this:
/// <reference path="MyScriptFile.js" />
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What does git push origin HEAD mean?
...
HEAD points to the top of the current branch. git can obtain the branch name from that. So it's the same as:
git push origin CURRENT_BRANCH_NAME
but you don't have to remember/type the current branch name. Also it prevents you from pushing to the wrong remote branch by ac...
Getting one value from a tuple
...
You can write
i = 5 + tup()[0]
Tuples can be indexed just like lists.
The main difference between tuples and lists is that tuples are immutable - you can't set the elements of a tuple to different values, or add or remove ele...
Get commit list between tags in git
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665...
PostgreSQL array_agg order
...T xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
So in your case you would write:
SELECT
array_to_string(array_agg(animal_name),';') animal_names,
array_to_string(array_agg(animal_type),';') animal_types
FROM (SELECT animal_name, animal_type FROM animals) AS x;
The input to the arr...
How to print something without a new line in ruby
puts statement in ruby automatically adds a new line, how do I avoid it?
3 Answers
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