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How do I use itertools.groupby()?

I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this: ...
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How do I implement __getattribute__ without an infinite recursion error?

I want to override access to one variable in a class, but return all others normally. How do I accomplish this with __getattribute__ ? ...
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Using unset vs. setting a variable to empty

I'm currently writing a bash testing framework, where in a test function, both standard bash tests ( [[ ) as well as predefined matchers can be used. Matchers are wrappers to '[[' and besides returning a return code, set some meaningful message saying what was expected. ...
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What are bitwise shift (bit-shift) operators and how do they work?

I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators) ... ...
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/

Update: Now that it's 2016 I'd use PowerShell for this unless there's a really compelling backwards-compatible reason for it, particularly because of the regional settings issue with using date . See @npocmaka's https://stackoverflow.com/a/19799236/8479 ...
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++someVariable vs. someVariable++ in JavaScript

In JavaScript you can use ++ operator before ( pre-increment ) or after the variable name ( post-increment ). What, if any, are the differences between these ways of incrementing a variable? ...
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How to find a table having a specific column in postgresql

I'm using PostgreSQL 9.1. I have the column name of a table. Is it possible to find the table(s) that has/have this column? If so, how? ...
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How do I write a bash script to restart a process if it dies?

I have a python script that'll be checking a queue and performing an action on each item: 8 Answers ...
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Can I call memcpy() and memmove() with “number of bytes” set to zero?

Do I need to treat cases when I actully have nothing to move/copy with memmove() / memcpy() as edge cases 2 Answers ...
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Initializing a member array in constructor initializer

I believe the reason is that arrays can be initialized only with = syntax, that is: 6 Answers ...