From: Clement Ow <clement.ow@...>
Date: 2008-04-17T10:38:44+09:00
Subject: Re: Calculating elapsed time

Thanks guys of the prompt reply! However, i'll need help the 
explanations though.. Really appreciate that ;)

Jes炭s Gabriel y Gal叩n wrote:
> On Wed, Apr 16, 2008 at 4:47 PM, Rob Biedenharn
> <Rob@agileconsultingllc.com> wrote:
> 
>>  or:
>>  irb> start = Time.now
>>  => Wed Apr 16 10:41:03 -0400 2008
>>  irb> finish = Time.now
>>  => Wed Apr 16 10:45:53 -0400 2008
>>  irb> elapsed = finish.to_f - start.to_f   # note to_f to keep fractional
>> seconds
> 
> Yep, I assumed he wanted to stop at the seconds level.
> 
>>  => 289.695813894272
>>  irb> mins, secs = elapsed.divmod 60.0
>>  => [4, 49.6958138942719]
>>  irb> puts("%3d:%04.2f"%[mins.to_i, secs])
how this line work? "%3d" and %04.2f" means selecting min and secs 
respectively?
>>   4:49.70
>>  => nil
> 
> I always forget about divmod, it's a cool little method :-)
> 
> Jesus.


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