From: Josh Cheek <josh.cheek@...>
Date: 2010-12-08T05:36:17+09:00
Subject: Re: How to delay "string" interpretation?

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On Tue, Dec 7, 2010 at 2:24 PM, Fritz Trapper <ajfrenzel@web.de> wrote:

> Robert Klemme wrote in post #966874:
> > f = lambda {|x,y| "#{x} + #{y}"}
> > x = f["a", "b"]
>
> What happens in the 2nd line? f is a proc object, which gets passed an
> array?
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
It isn't getting passed an array, it is having it's [] method invoked, which
is just a synonym for the call method.

f = lambda {|x,y| "#{x} + #{y}"}

f.call( "a" , "b" )
f.[]( "a" , "b" )

f.call "a" , "b"
f.[] "a" , "b"

f.send "call" , "a" , "b"
f.send "[]" , "a" , "b"

http://www.ruby-doc.org/core/classes/Proc.html#M001555

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