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Bash history without line numbers
The bash history command is very cool. I understand why it shows the line numbers, but is there a way I can invoke the history command and suppress the line numbers?
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Set operations (union, intersection) on Swift array?
Are there any standard library calls I can use to either perform set operations on two arrays, or implement such logic myself (ideally as functionally and also efficiently as possible)?
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How to join multiple lines of file names into one with custom delimiter?
I would like to join the result of ls -1 into one line and delimit it with whatever i want.
22 Answers
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Modifying a subset of rows in a pandas dataframe
Assume I have a pandas DataFrame with two columns, A and B. I'd like to modify this DataFrame (or create a copy) so that B is always NaN whenever A is 0. How would I achieve that?
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how to use python to execute a curl command
I want to execute a curl command in python.
7 Answers
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Ruby - test for array
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There's also is_a? and instance_of?. See stackoverflow.com/questions/3893278/…
– Nathan Long
Mar 21 '11 at 15:57
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Create a string of variable length, filled with a repeated character
...Java form here: Java - Create a new String instance with specified length and filled with specific character. Best solution?
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jQuery’s .bind() vs. .on()
...d from future versions at any time. There is no reason to keep using .bind and every reason to prefer .on instead.
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Load multiple packages at once
...w can I load a bunch of packages at once with out retyping the require command over and over? I've tried three approaches all of which crash and burn.
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How to insert a text at the beginning of a file?
... lines?
$ sed -i '1,10s/^/<added text> /' file
Or you can use Command Grouping:
$ { echo -n '<added text> '; cat file; } >file.new
$ mv file{.new,}
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