From: "Chr. Rippel" <chr_news@...>
Date: 2001-12-14T02:46:32+09:00
Subject: [ruby-talk:28441] Re: why is Proc's arity function so weird?

> >From the Pickaxe book (online, since the printed version is wrong, as is
> the online description of Proc#arity):
>   Proc.new {||}.arity      �   0
>   Proc.new {|a|}.arity     �  -1
>   Proc.new {|a,b|}.arity   �   2
>   Proc.new {|a,b,c|}.arity �   3
>   Proc.new {|*a|}.arity    �  -1
>   Proc.new {|a,*b|}.arity  �  -2
Add this to your list

Proc.new {||}.arity      �   0
Proc.new {|a,|}.arity     �  1
Proc.new {|a,b,|}.arity   �   2
Proc.new {|a,b|}.arity   �   2
Proc.new {|a,b,c,|}.arity �   3
Proc.new {|a,b,c|}.arity �   3

......
Proc.new {|a|}.arity     �  -1
Proc.new {|*a|}.arity     �  -1
Proc.new {|a,*b|}.arity     �  -2
Proc.new {|a,b,*c|}.arity     �  -3


/Christoph