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MongoDB: Combine data from multiple collections into one..how?

... together by using the "reduce" out option in MongoDB 1.8+ map/reduce (see http://www.mongodb.org/display/DOCS/MapReduce#MapReduce-Outputoptions). You need to have some key in both collections that you can use as an _id. For example, let's say you have a users collection and a comments collection ...
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Representing graphs (data structure) in Python

...hey implemented their algorithms. You can also add additional algorithms. https://github.com/networkx/networkx/tree/master/networkx/algorithms share | improve this answer | ...
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Change date of git tag (or GitHub Release based on it)

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Why does changing 0.1f to 0 slow down performance by 10x?

... -msse -mfpmath=sse (corresponding credits to Carl Hetherington [1]) [1] http://carlh.net/plugins/denormals.php share | improve this answer | follow | ...
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mongodb group values by multiple fields

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Setting an object to null vs Dispose()

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Catching error codes in a shell pipe

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What is the difference between Ruby 1.8 and Ruby 1.9

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Reading output of a command into an array in Bash

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Method Resolution Order (MRO) in new-style classes?

... Inside a class definition super() doesn't require arguments. See https://docs.python.org/3/library/functions.html#super – Ben Nov 21 '17 at 15:05 ...