From: Nobuyoshi Nakada <nobu@...>
Date: 2007-06-04T13:05:49+09:00
Subject: Re: code problems

Hi,

At Mon, 4 Jun 2007 12:36:50 +0900,
david karapetyan wrote in [ruby-talk:254217]:
> why is the following code not valid

It is valid.

> def fibber
>     a = 1
>     b = 1
>     lambda do
>         yield(a)
>         a,b = a+b,a
>     end
> end

irb(main):009:0> fib = fibber{|x|p x}
=> #<Proc:0xb7c63a74@(irb):4>
irb(main):010:0> fib[]
1
=> [2, 1]
irb(main):011:0> fib[]
2
=> [3, 2]
irb(main):012:0> fib[]
3
=> [5, 3]

-- 
Nobu Nakada