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Greenlet Vs. Threads
...s in its own context, you can continue to use synchronous APIs without threading. This is good because threads are very expensive in terms of virtual memory and kernel overhead, so the concurrency you can achieve with threads is significantly less. Additionally, threading in Python is more expensive...
Many-to-many relationship with the same model in rails?
...ps; you have to ask yourself the following questions:
Do I want to store additional information with the association? (Additional fields in the join table.)
Do the associations need to be implicitly bi-directional?
(If post A is connected to post B, then post B is also connected to post A.)
That...
Bat file to run a .exe at the command prompt
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abatishchevabatishchev
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Omit rows containing specific column of NA
...F[complete.cases(DF), ]
# x y z
# 2 2 10 33
Or if completeFun is already ingrained in your workflow ;)
completeFun(DF, names(DF))
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How to iterate object in JavaScript? [duplicate]
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Neuron
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answered Mar 19 '13 at 10:14
kavinkavin
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What are bitwise shift (bit-shift) operators and how do they work?
...rithmetic right shift is exactly like the logical right shift, except instead of padding with zero, it pads with the most significant bit. This is because the most significant bit is the sign bit, or the bit that distinguishes positive and negative numbers. By padding with the most significant bit...
Python function as a function argument?
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Peter Mortensen
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answered Jun 9 '11 at 7:48
Manuel SalvadoresManuel Salvad...
fatal error: malformed or corrupted AST file - Xcode
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Had same problem. Clearing derived data folder solved the issue for me. In Xcode, go to Window->Organizer->Projects, select your project, and press the "Delete..." button next to "Derived data".
If this doesn't work, yo...
Quick way to create a list of values in C#?
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Neil WilliamsNeil Williams
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Redirecting to a relative URL in JavaScript
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KobiKobi
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