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Get list from pandas DataFrame column headers
...st performant:
my_dataframe.columns.values.tolist()
.columns returns an Index, .columns.values returns an array and this has a helper function .tolist to return a list.
If performance is not as important to you, Index objects define a .tolist() method that you can call directly:
my_dataframe.co...
Pad a number with leading zeros in JavaScript [duplicate]
...ly works with 4 digits). Of course, it is a specific answer to a specific question, but including a length option would be better (like other answers).
– doubleJ
Nov 4 '13 at 19:26
...
How do I split a string into an array of characters? [duplicate]
...onsole.log(s.charAt(i));
}
You can also access each character with its index using normal array syntax. Note, however, that strings are immutable, which means you can't set the value of a character using this method, and that it isn't supported by IE7 (if that still matters to you).
var s = "ov...
How do I change read/write mode for a file using Emacs?
...lisp function.
If you are using the default keyboard bindings,
C-x C-q
(which you read aloud as "Control-X Control-Q") will have the same effect. Remember, however, given that emacs is essentially infinitely re-configurable, your mileage may vary.
Following up from the commentary: you sho...
How to select date from datetime column?
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The first one is very slow and ignores the indexes. It is better to have LIKE 'date%'
– kachar
Feb 22 '13 at 10:03
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C dynamically growing array
...a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes...
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Center Oversized Image in Div
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This is an old Q, but a modern solution without flexbox or position absolute works like this.
margin-left: 50%;
transform: translateX(-50%);
.outer {
border: 1px solid green;
margin: 20px auto;
width: 20%;
padding: 10px 0...
'git status' shows changed files, but 'git diff' doesn't
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I added the file to the index:
git add file_name
and then ran:
git diff --cached file_name
You can see the description of git diff here.
If you need to undo your git add, then please see here: How to undo 'git add' before commit?
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Emacs bulk indent for Python
... C-c C-r must be custom bindings you've set up yourself. If you run emacs -q (to run emacs without loading an init file) you'll see there is no binding for C-c C-l or C-c C-r in Python mode.
– unutbu
Dec 10 '15 at 13:19
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Is there a way to reduce the size of the git folder?
... edited Oct 29 '15 at 1:44
Aequitas
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answered Jun 25 '10 at 16:58
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