From: Guillaume Marcais <guslist@...>
Date: 2004-05-25T19:48:17+09:00
Subject: Re: [RCR] Numeric#of

Le 25 mai 04, � 05:15, Gavin Sinclair a �crit :
> Here is a simple untested implementation which supports the existing as
> well as the proposed behaviour.
>
>   class Integer
>     def times(&block)
>       (0...self).map(&block)
>     end
>   end
>
>   5.times { puts "Hello" }         # existing use of Integer#times
>   n = 1
>   6.times { |i| n = n * i }        # existing use of Integer#times
>   a, b, c = 7.times { Array.new }  # *new* use of Integer#times

But in that case, an array is built and return even if I use times as a 
loop. That could be pretty bad performance wise. Unless the interpretor 
as a way to know that the return value is not used and does not build 
the array in that case.

Guillaume.