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How to know/change current directory in Python shell?
...Under Windows:
set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
(taken from http://docs.python.org/using/windows.html)
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... and even better: use virtualenv and virtualenv_wrapper, this will allow you to create a development environment where you can add module paths as you like (add2virtualen...
How can I discard remote changes and mark a file as “resolved”?
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Bash command to sum a column of numbers [duplicate]
I want a bash command that I can pipe into that will sum a column of numbers. I just want a quick one liner that will do something essentially like this:
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Pro JavaScript programmer interview questions (with answers) [closed]
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Because JavaScript is such a small language, yet with incredible complexity, you should be able to ask relatively basic questions and find out if they are really that good based on their answers. For instance, my standard first question to gauge the rest of the interview is:
In JavaSc...
Numpy: find first index of value fast
...re is a feature request for this scheduled for Numpy 2.0.0: https://github.com/numpy/numpy/issues/2269
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Event system in Python
...aware of pydispatcher , but I was wondering what else can be found, or is commonly used?
15 Answers
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Variable number of arguments in C++?
...lt;<() in streams) or default arguments etc. These are all safer: the compiler gets to know more about what you're trying to do so there are more occasions it can stop you before you blow your leg off.
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JPA: How to have one-to-many relation of the same Entity type
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Pandas - How to flatten a hierarchical index in columns
I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation):
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What makes a keychain item unique (in iOS)?
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