From: Mike <mike@...>
Date: 2001-06-05T23:48:52+09:00
Subject: [ruby-talk:16235] Re: Block arguments vs method arguments

On Sun, 3 Jun 2001 02:49:32 +0900
Albert Wagner <alwagner@tcac.net> wrote:

> 
> > There're TWO closely related but different problems.
> >
> >   (a) The semantics of block parameters are defined by multiple
> >       assignment.  
> 
> I don't know what this means.  That yield calls a block multiple times?
[...]
> >
> >       Plus, |a| accepts any number of values, where |a,| takes only
> >       one value (this too is caused by multiple assignment semantics).
> 
> I guess I don't understand this either.

It means that |a, b, *c| will be interpreted as:
a, b, *c = <the arguments given to yield>
It is like a multiple assignment.

So |a,| is the only way the express "one and only one argument", because |a| can receive an array.

Mike.
midulo.