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What is more efficient? Using pow to square or just multiply it with itself?

...t/date_time/posix_time/posix_time.hpp> inline boost::posix_time::ptime now() { return boost::posix_time::microsec_clock::local_time(); } #define TEST(num, expression) \ double test##num(double b, long loops) \ { \ double x = 0.0; \ \ boost::posix_time::ptime startTime = now(); \ ...
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How to convert DateTime? to DateTime

...ode. DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now; share | improve this answer | follow | ...
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C: differences between char pointer and array [duplicate]

...ut it's a subtle difference. Essentially, the former: char amessage[] = "now is the time"; Defines an array whose members live in the current scope's stack space, whereas: char *pmessage = "now is the time"; Defines a pointer that lives in the current scope's stack space, but that references ...
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How to ignore user's time zone and force Date() use specific time zone

...ime. Big note, UTC stands for Universal time code. The current time right now in 2 different places is the same UTC, but the output can be formatted differently. What we need here is some formatting var _date = new Date(1270544790922); // outputs > "Tue Apr 06 2010 02:06:30 GMT-0700 (PDT)", f...
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“Ago” date/time functions in Ruby/Rails

... As of Rails 3 its now 10.minutes.ago instead of mins. – cbron Jan 13 '12 at 15:47 4 ...
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Stopwatch vs. using System.DateTime.Now for timing events [duplicate]

...mance of my code so I stored the start and end time using System.DateTime.Now . I took the difference between the two as the time my code to execute. ...
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Count number of days between two dates

... Doesn't work for (Time.zone.now.to_date - 23.hours.ago.to_date).to_i, it gives 1 and should be 0 – Yuri Ghensev Feb 4 '17 at 16:21 3 ...
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Get current time in seconds since the Epoch on Linux, Bash

...e used to compute elapsed times $ printf -v beg '%(%s)T\n' -2 $ printf -v now '%(%s)T\n' -1 $ echo beg=$beg now=$now elapsed=$((now-beg)) beg=1583949610 now=1583953032 elapsed=3422 share | improve...
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Explain ExtJS 4 event handling

...k event handler. Let's retrieve Element: var el = Ext.get('test_node'); Now let's check docs for click event. It's handler may have three parameters: click( Ext.EventObject e, HTMLElement t, Object eOpts ) Knowing all this stuff we can assign handler: // event name event handler...
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Should I test private methods or only public ones? [closed]

...c there (Method Object). Then I can easily test the previously-private-but-now-public method that now lives on its own class. share | improve this answer | follow ...