From: Ross Bamford <rossrt@...>
Date: 2006-02-22T20:27:32+09:00
Subject: Re: Syntax questions

On Wed, 2006-02-22 at 10:50 +0900, David Vallner wrote:

> david@chello082119107152:~$ irb
> irb(main):001:0> a, b = [1, 2]
> => [1, 2]
> irb(main):002:0> a
> => 1
> irb(main):003:0> b
> => 2
> 
> Might possibly change in 1.9 / 2.0 to reduce the ambiguity and general mystery 
> surrounding parallel assignment in strange cases. (Basically, once the number 
> of lvalues and rvalues differs, things get mildly funky, and it's only 
> downhill from there)

Seriously? If that's true, I hope it never comes to pass. I don't think
it's mysterious, and it's saved me a good few lines of code here and
there...

a,b = [1,2,3]
# => [1, 2, 3]

a
# => 1

b
# => 2

a,*b = [1,2,3]
# => [1, 2, 3]

a
# => 1

b
# => [2, 3]

a,b,c = [1,2]
# => [1, 2]

a
# => 1

b
# => 2

c
# => nil

Which is exactly what I expected to happen.

-- 
Ross Bamford - rosco@roscopeco.REMOVE.co.uk