From: Adam Bozanich <adam.boz@...>
Date: 2007-04-26T18:56:45+09:00
Subject: Re: [patch] Re: test/unit inconsistencies between 1.9 and 1.8

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On 4/26/07, Mauricio Fernandez <mfp@acm.org> wrote:
>
>
> ?
> AFAIK #arity was redefined in 1.9 to return 0 for Procs with no arguments.
> That patch was applied to 1.8 three years ago but it's not supposed to be
> needed on 1.9, see [ruby-core:2829].
>
> Also,
>
> RUBY_VERSION                                       # => "1.9.0"
> RUBY_RELEASE_DATE                                  # => "2007-02-07"
> proc{}.arity                                       # => 0
> proc{||}.arity                                     # => 0
> Proc.new{}.arity                                   # => 0


Strange, must be a regression.

irb(main):001:0> RUBY_VERSION
=> "1.9.0"
irb(main):002:0> RUBY_RELEASE_DATE
=> "2007-04-26"
irb(main):003:0> proc{}.arity
=> -1
irb(main):004:0> proc{||}.arity
=> -1
irb(main):005:0> Proc.new{}.arity
=> -1

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