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Simple logical operators in Bash
... of variables and I want to check the following condition (written out in words, then my failed attempt at bash scripting):
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How to merge the current branch into another branch
I have two branches, master and dev. I always work on dev and only check code into the master branch once it's been approved for production use. When I do so, I have to do the following:
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find without recursion
...the find command in some way that it will not recurse into the sub-directories? For example,
3 Answers
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How do I comment in CoffeeScript? “/* this */” doesn't work
...haracter seems pretty minimal ;)
Also:
###
This block comment (useful for ©-Copyright info) also gets
passed on to the browsers HTML /* like this! */
###
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How do I unbind “hover” in jQuery?
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$(this).unbind('mouseenter').unbind('mouseleave')
or more succinctly (thanks @Chad Grant):
$(this).unbind('mouseenter mouseleave')
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Escaping ampersand in URL
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:- %26 is not working for me. Is there any other solution.?
– Sanjiv
Aug 23 '16 at 6:12
2
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Can you attach Amazon EBS to multiple instances?
...can I use this same setup and attach the EBS to multiple machine instances or what's another solution?
11 Answers
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How can I count the occurrences of a list item?
...ple items. Calling count in a loop requires a separate pass over the list for every count call, which can be catastrophic for performance. If you want to count all items, or even just multiple items, use Counter, as explained in the other answers.
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Prepend a level to a pandas MultiIndex
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A nice way to do this in one line using pandas.concat():
import pandas as pd
pd.concat([df], keys=['Foo'], names=['Firstlevel'])
An even shorter way:
pd.concat({'Foo': df}, names=['Firstlevel'])
This can be generalized to many data frames, see the docs.
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How to alter a column and change the default value?
I got the following error while trying to alter a column's data type and setting a new default value:
7 Answers
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