From: Jakub Travnik <j.travnik@...>
Date: 2001-11-25T04:18:30+09:00
Subject: [ruby-talk:26359] Re: what's the & in parameter listings?

Tobias DiPasquale wrote:

> Hi,
> 
>     What does the '&' signify in parameter listings? I have seen it in 
> such places as "def add(*params, &block)", but am not sure what it 
> means? Does it have the same significance as it does in C?
> 

No, it is the way to pass block around.

following codes are equivalent:
1:
a.each { something }

2:
x=proc{ something }
a.each &x

3:
def someproc(b,&block_for_me)
  b.each &block_for_me
end

someproc(a) { something }


Jakub Travnik
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