From: 7stud -- <bbxx789_05ss@...>
Date: 2007-10-31T21:46:56+09:00
Subject: Re: Why, oh, why, little regexp?

Gavin Kistner wrote:
> On Oct 30, 9:30 pm, Daniel Waite <rabbitb...@gmail.com> wrote:
>> That's clever use of ?a, which I recognize but have never seen anyone
>> use before. Thanks for the example!
> 
> My current favorite use for the ?x syntax is converting single-
> character strings representing digits into their integer form:
> 
>   # Jenny jenny, who can I turn to?
>   irb(main):006:0> "8675309".each_byte{ |x| p x - ?0 }
>   8
>   6
>   7
>   5
>   3
>   0
>   9


Perhaps this is clearer:

"8675309".each_byte{|code| puts code.chr}

...although slightly slower.
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