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.gitignore after commit [duplicate]
...o keep the local copy but remove from the repo. ) So if you want to remove all the exe's from your repo do
git rm --cached /\*.exe
(Note that the asterisk * is quoted from the shell - this lets git, and not the shell, expand the pathnames of files and subdirectories)
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How to mkdir only if a directory does not already exist?
...is used for both files / directories and just checks existence. Also, they all return 0 upon success, so ! is redundant. Correct me if I'm wrong.
– alkar
Apr 27 '09 at 14:57
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add a string prefix to each value in a string column using Pandas
...map :
df['col'].map('str{}'.format)
It will apply the word "str" before all your values.
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Blurry text after using CSS transform: scale(); in Chrome
...Chrome that causes blurry text after doing a transform: scale() . Specifically I'm doing this:
30 Answers
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Is there a better way to find out if a local git branch exists?
...as from 2011.
git rev-parse --verify <branch_name>
This is essentially the same as the accepted answer, but you don't need type in "refs/heads/"
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How to catch an Exception from a thread
...because exceptions are local to a thread, and your main thread doesn't actually see the run method. I suggest you read more about how threading works, but to quickly summarize: your call to start starts up a different thread, totally unrelated to your main thread. The call to join simply waits for i...
Image library for Python 3
...actively being developed as for Oct 2014, has a nice doc, you may pip3 install Image (I was using pillow without knowing), and you from PIL import Image. It also supports all the major platforms now. When looking for a PIL for python3, this is definitely the choice.
– Yosh
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How do you specify the Java compiler version in a pom.xml file?
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Generally you don't want to value only the source version (javac -source 1.8 for example) but you want to value both the source and the target version (javac -source 1.8 -target 1.8 for example).
Note that from Java 9, you have a ...
var self = this?
Using instance methods as callbacks for event handlers changes the scope of this from "My instance" to "Whatever just called the callback" . So my code looks like this
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Set value for particular cell in pandas DataFrame using index
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the second column needs to be on brackets, otherwise all of columns will be overwritten with value. Like this: df.loc[df['age']==3, ['age-group']] = 'toddler'
– Piizei
Sep 12 '18 at 10:55
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