From: nobuyoshi nakada <nobuyoshi.nakada@...>
Date: 2005-10-12T16:21:56+09:00
Subject: Re: Default argument values for blocks

Hi,

At Wed, 12 Oct 2005 15:46:53 +0900,
Trans wrote in [ruby-talk:160166]:
> What of &?
> 
>   a.each( &->(foo="bar"){puts foo} )  # Ick.
> 
> Can we drop?
> 
>   a.each( ->(foo="bar"){puts foo} )   # Better.

It passes a Proc object.

  $ ruby -e '1.times( ->(foo="bar"){puts foo} )'
  -e:1:in `times': wrong number of arguments (1 for 0) (ArgumentError)
          from -e:1

You have to drop also parentheses.

  $ ruby -e '1.times->(foo="bar"){puts foo}'
  0

  $ ruby -e 'def y;yield;end;y->(foo="bar"){puts foo}'
  bar

-- 
Nobu Nakada