From: matz@... (Yukihiro Matsumoto)
Date: 2004-03-04T14:01:49+09:00
Subject: Re: concerns about Proc,lambda,block

Hi,

In message "Re: concerns about Proc,lambda,block"
    on 04/03/04, Dave Thomas <dave@pragprog.com> writes:

|I'm sorry to be stupid about this: normally I have no trouble 
|understanding the way you're thinking about Ruby's semantics, but I'm 
|suffering some kind of mental block here.

Usually when it happens, it is my fault.

|Based on what you said above, I'd expect the first and third calls of 
|the following code not to generate a warning, but they do.

This warning is caused by Proc#call itself, not by lambda argument
checker.  Its purpose is to warn and guide users to prepare future
proc argument semantics, which |a| receives only one value.  The new
semantics will be available on 2.0.

							matz.