From: Daniel Berger <djberge@...>
Date: 2003-06-18T03:20:16+09:00
Subject: Re: [RCR] Array#push(empty array expanded) => no exception

Simon Strandgaard wrote:
> This strange behavier really surprised me.. 
> 
> irb(main):006:0> [].push(*[])
> ArgumentError: wrong number arguments (at least 1)
>         from (irb):6:in `push'
>         from (irb):6
> 
> 
> Why is it illigal to concatenate an empty set ?
> I expected Rubys Array class to work just like a normal set.
> This seems *VERY* non-intuitive to me (POLS).
> 
> Array#unshift doesn't like zero arguments neither.
> 
> 
> An ugly hack to avoid it could be: 
>    @data.unshift(*objs) unless objs.empty?
> 
> 
> 
> Can it be made legal to push/unshift with zero arguments ?
> 
> --
> Simon Strandgaard

Already fixed in (later) versions of 1.8

ruby -v -> ruby 1.8.0 (2003-06-14) [sparc-solaris2.9]

irb(main):004:0> [].push(*[])
=> []

Regards,

Dan