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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?

...ion on my system is 1 µs, but I also tested it on a Linux system (Red Hat 4.1.2-48 with GCC 4.1.2) and there the precision was only 1 ms. gettimeofday() returns the wall-clock time with (nominally) µs precision. On my system this clock does seem to have µs precision, but this is not guaranteed, b...
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What is the usefulness of PUT and DELETE HTTP request methods?

... 4 Answers 4 Active ...
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Adding 'serial' to existing column in Postgres

... 134 Look at the following commands (especially the commented block). DROP TABLE foo; DROP TABLE bar...
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How do you track record relations in NoSQL?

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Foreign keys in mongo?

...{group:"phones"}) > db.foo.find() { "_id" : ObjectId("4df6539ae90592692ccc9940"), "group" : "phones" } { "_id" : ObjectId("4df6540fe90592692ccc9941"), "group" : "phones" } >db.foo.find({'_id':ObjectId("4df6539ae90592692ccc9940")}) { "_id" : ObjectId("4df6539ae90592692ccc9940...
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What is the list of possible values for navigator.platform as of today? [closed]

...ing a browser compiled for 16-bit, even though the user is on a 32-bit or 64-bit Windows machine. Of course W3Schools lists the old definition (I'm not even gonna link to them). W3 and MDN have agreed on a different definition though: navigator.platform represents the platform on which the browser ...
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Easiest way to pass an AngularJS scope variable from directive to controller?

... Edited on 2014/8/25: Here was where I forked it. Thanks @anvarik. Here is the JSFiddle. I forgot where I forked this. But this is a good example showing you the difference between = and @ <div ng-controller="MyCtrl"> <h2&...
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Python __str__ versus __unicode__

... answered Aug 20 '09 at 16:04 John MillikinJohn Millikin 178k3636 gold badges199199 silver badges215215 bronze badges ...
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Abort makefile if variable not set

... edited Feb 15 '19 at 11:04 answered Jun 1 '12 at 22:57 Eld...
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Multiple aggregations of the same column using pandas GroupBy.agg()

... cs95 231k6060 gold badges391391 silver badges456456 bronze badges answered Nov 27 '12 at 20:57 bmubmu 28.2k1111 gold badges...