From: Stefan Rusterholz <apeiros@...>
Date: 2007-08-12T04:35:29+09:00
Subject: Re: first and last char

Felix Windt wrote:
>> 
>> of course, they err :)
>> 
>> wish there were #first and #last in String
>> 
>> just a thought
>> kind regards -botp
>> 
> 
> irb(main):001:0> class String
> irb(main):002:1> def first
> irb(main):003:2> self.split('').first
> irb(main):004:2> end
> irb(main):005:1> def last
> irb(main):006:2> self.split('').last
> irb(main):007:2> end
> irb(main):008:1> end
> => nil
> irb(main):009:0> "testing".first
> => "t"
> irb(main):010:0> "testing".last
> => "g"

Ew, that's awfully complex. You create n new objects from which you 
throw n-1 away again...
Think of the memory! ;-)
def first; self[0,1]; end; def last; self[-1,1]; end

Regards
Stefan
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