From: Johannes Ahl-mann <softpro@...>
Date: 2005-02-13T10:15:05+09:00
Subject: Re: difficulty with blocks

> A shorter version without the generator library would be:
> ##################################################
> #!/usr/bin/ruby
>
> def fib
>     a, b = 1, 1
>     loop {
>         yield a
>         a, b = b, a + b
>     }
> end
>
> def fibUpTo n
>     fib { |val|
>         break if val > n
>         yield val
>     }
> end
>
> a = []
> fibUpTo(20) { |val| a << val }
> puts a
> ##################################################
>

thx, this helped a lot. i wasn't aware that one could use "break" inside
a block... this looks very readable and natural.

Johannes