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multiprocessing: sharing a large read-only object between processes?

...ults from stdin, does work, writes intermediate results on stdout. Connect all the workers as a pipeline: process1 <source | process2 | process3 | ... | processn >result Each process reads, does work and writes. This is remarkably efficient since all processes are running concurrently. T...
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Get a filtered list of files in a directory

...t a list of files in a directory using Python, but I do not want a list of ALL the files. 14 Answers ...
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What is the meaning of “__attribute__((packed, aligned(4))) ”

...gned(1))) sSampleStruct; so the above specified gcc attribute does not allow the structure padding. so the size will be 8 bytes. If you wish to do the same for all the structures, simply we can push the alignment value to stack using #pragma #pragma pack(push, 1) //Structure 1 ...... //Stru...
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Swift Beta performance: sorting arrays

...t)) // [-1, 0, 2, 2, 5, 8, 1234] // [-1, 0, 2, 2, 5, 8, 1234] Both are called in the same program as written. var x_swift = CInt[](count: n, repeatedValue: 0) var x_c = CInt[](count: n, repeatedValue: 0) for var i = 0; i < n; ++i { x_swift[i] = CInt(random()) x_c[i] = CInt(random()) }...
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“Large data” work flows using pandas

... one contains different fields, or do they have some records per file with all of the fields in each file? Do you ever select subsets of rows (records) based on criteria (e.g. select the rows with field A > 5)? and then do something, or do you just select fields A, B, C with all of the records (a...
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A proper wrapper for console.log with correct line number?

... This is an old question and All the answers provided are overly hackey, have MAJOR cross browser issues, and don't provide anything super useful. This solution works in every browser and reports all console data exactly as it should. No hacks required...
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Detect network connection type on Android

...twork is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType(). It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it useful. Here is a Gist of the...
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What do (lambda) function closures capture?

...the name and scope of the variable, not the object it's pointing to. Since all the functions in your example are created in the same scope and use the same variable name, they always refer to the same variable. EDIT: Regarding your other question of how to overcome this, there are two ways that com...
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Include all existing fields and add new fields to document

...t aggregation stage where I can instruct it to add a new field and include all existing fields, without having to list all the existing fields. ...
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How to open a URL in a new Tab using JavaScript or jQuery? [duplicate]

How to open a URL in new tab instead of new window programatically? 6 Answers 6 ...