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MongoDB: Combine data from multiple collections into one..how?
...er 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 and you...
What does the brk() system call do?
...ould not however find anything about it on the glibc docs, e.g.:
https://www.gnu.org/software/libc/manual/html_mono/libc.html#Resizing-the-Data-Segment
Things will likely just work there I suppose since mmap is likely used for malloc.
See also:
What's unsafe/legacy about brk/sbrk?
Why does ca...
What is data oriented design?
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CMake link to external library
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val-mutable versus var-immutable in Scala
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When do I use a dot, arrow, or double colon to refer to members of a class in C++?
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Pass a data.frame column name to a function
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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
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Proper practice for subclassing UIView?
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
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