From: Matthias Reitinger <reitinge@...>
Date: 2009-03-20T11:39:56+09:00
Subject: Re: Passing a named function instead of a code block?

Paul Jungwirth wrote:
> I have a question about ruby's feature that when you call a method, you
> can pass in a block of code after the last argument. Instead of writing
> a code block, suppose I already have a def'd method that would work just
> as well. Is there any way I can pass that in directly? For example,
> suppose I have this code:
> 
> #!/usr/bin/env ruby
> 
> def fib(n)
>     a, b = 0, 1
>     n.times do |i|
>         a, b = b, a+b
>     end
>     b
> end
> 
> c = [1, 2, 3, 4]
> 
> puts c.collect {|i| fib i}

  puts c.collect(&method(:fib))

-Matthias
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