From: Jim Freeze <jim@...>
Date: 2002-12-02T12:51:22+09:00
Subject: Re: For statements

On Monday,  2 December 2002 at 11:28:58 +0900, why the lucky stiff wrote:
> Daniel Carrera (dcarrera@math.umd.edu) wrote:
> > Can I use a for statement to do the equivalent this?:
> > 3.step(9,2) {|i| puts i }
> 
> You know that Ranges can be handy with the for..in?
> 
>   for i in (3..9).reject { |i| i % 2 == 0 }
>     puts i
>   end
> 
>   for i in (3..9)
>     next if i % 2 == 0
>     puts i
>   end
 
Why gives some good suggestions, but why do you 
want to use a for stateement?
For the case given, I think #step is more applicable and probably faster:

3.step(9,2) { |i|
  puts i
}


-- 
Jim Freeze
----------
Nothing astonishes men so much as common sense and plain dealing.