From: 7stud -- <bbxx789_05ss@...>
Date: 2007-10-28T11:55:05+09:00
Subject: Re: convert string format

Brian Adkins wrote:
> On Oct 27, 10:09 pm, "David A. Black" <dbl...@rubypal.com> wrote:
>>
>> >  irb(main):003:0> "20070801".unpack("a4a2a2").join("/")
>> >  => "2007/08/01"
>>
>> And here's one with scanf:
>>
>>    >> "20070801".scanf("%4s%2s%2s").join('/')
>>    => "2007/08/01"
> 
> Yeah, but scanf is implemented in Ruby, so it's 25 times slower (at
> least by a crude, quick benchmark) than unpack or insert :(

I was going to post that same solution, but after timing it, I almost 
gagged when I saw the results.

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