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Pandas groupby: How to get a union of strings
... {random}
dtype: object
Doing this on a whole frame, one group at a time. Key is to return a Series
def f(x):
return Series(dict(A = x['A'].sum(),
B = x['B'].sum(),
C = "{%s}" % ', '.join(x['C'])))
In [14]: df.groupby('A').apply(f)
Out[...
Javascript heredoc
...n it deserve to take advantage of new technologies as they as created over time. That way, new users having the same issue can find "non-archaeological" information here.
– asiby
Oct 9 '18 at 18:26
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When to use static vs instantiated classes
... importing a global variable. In PHP, classes are global symbols, so every time you call a static method you rely on a global symbol (the class name). This is a case when global is evil. I had problems with this kind of approach with some component of Zend Framework. There are classes which use stat...
Removing duplicate rows in Notepad++
...ded you wanted to sort by line, and remove the duplicate lines at the same time.
To install the TextFX in the latest release of Notepad++ you need to download it from here: https://sourceforge.net/projects/npp-plugins/files/TextFX
The TextFX plugin used to be included in older versions of Notepad++,...
Getting “Warning! PATH is not properly set up” when doing rvm use 2.0.0 --default
Above doesn't work first time, works 2nd time.
16 Answers
16
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Use tab to indent in textarea
... this code to use 4 spaces instead of a tab? I tried doing   four times but it still converted it into a single space.
– jiaweizhang
Apr 18 '16 at 0:05
6
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How can I pad a value with leading zeros?
...
Not a fan of creating a new array each time you want to pad a value. Readers should be aware of the the potential memory and GC impact if they're doing large #'s of these (e.g. on a node.js server that's doing 1000's of these operations per second. @profitehlolz'...
How to get function parameter names/values dynamically?
...
to save people time , you can get this function from angular via annotate = angular.injector.$$annotate
– Nick
Feb 3 '15 at 17:09
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Different font size of strings in the same TextView
...id increaseFontSizeForPath(Spannable spannable, String path, float increaseTime) {
int startIndexOfPath = spannable.toString().indexOf(path);
spannable.setSpan(new RelativeSizeSpan(increaseTime), startIndexOfPath,
startIndexOfPath + path.length(), 0);
}
using
Utils.increaseFon...
How to convert timestamps to dates in Bash?
I need a shell command or script that converts a Unix timestamp to a date. The input can come either from the first parameter or from stdin, allowing for the following usage patterns:
...