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Easily measure elapsed time

... To run this you have to add the #include <chrono> directive and I would change the reporting time as: std::cout << "Time difference (sec) = " << (std::chrono::duration_cast<std::chrono::microseconds>(end - begin).count()) /1000000.0 <<std::endl; (and do not f...
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Specifying colClasses in the read.csv

... one can probably use the following to read the first line of the csv and determine how many columns there are. scan(csv,sep=',', what="character" , nlines=1 ) – defoo May 10 '10 at 19:53 ...
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What do < and > stand for?

I know that the entities < and > are used for < and > , but I am curious what these names stand for. ...
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Auto line-wrapping in SVG text

...lback will never be used in your example. See w3.org/TR/SVG11/feature.html and w3.org/TR/SVG11/struct.html#SwitchElement. – Erik Dahlström Feb 14 '11 at 13:43 ...
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How do I execute a Git command without being in the repository?

Is there a way to execute Git commands against a repository without being in that repository? 6 Answers ...
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Can clearInterval() be called inside setInterval()?

I have the code above and sometimes it is working, sometimes it is not. I am wondering if the clearInterval actually clear the timer?? because there is this monitor button that will only be disabled when it is in monitoring function. I have another clearInterval when an element called .outp...
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eclipse stuck when building workspace

...ook at How to report a deadlock. You may also want to check the Error view and/or the error log ([workspace]/.metadata/.log). If that doesn't help, you'll probably need to include more info about which plugins you have installed and which projects you have. Can you create a minimal workspace which r...
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Insert Update stored proc on SQL Server

... Your assumption is right, this is the optimal way to do it and it's called upsert/merge. Importance of UPSERT - from sqlservercentral.com: For every update in the case mentioned above we are removing one additional read from the table if we use the UPSERT instead of EXISTS....
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Going to a specific line number using Less in Unix

... ... and don't hit enter after g, or you will jump one further line. – HongboZhu Jan 14 at 11:28 ...
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What's the fastest way to convert String to Number in JavaScript?

...fastest for Number() in Chrome 37.0.2062.124 on Windows Server 2008 R2 / 7 and ParseInt() in Firefox 30.0 with implicit being the slowest for both. Also, you might consider including string literal floats in the test for general comparison. My guess is that it may change the order in some cases be...