From: "Ara.T.Howard" <ahoward@...>
Date: 2004-02-20T20:20:39+09:00
Subject: Re: proposal: let kind_of take more arguments

On Thu, 19 Feb 2004, Simon Strandgaard wrote:

> Date: Thu, 19 Feb 2004 15:25:27 +0100
> From: Simon Strandgaard <neoneye@adslhome.dk>
> Newsgroups: comp.lang.ruby
> Subject: proposal: let kind_of take more arguments
> 
> It just hit me.. why not let kind_of? take more arguments?

this is a good idea regardless of your exact situation - it reads nicer than a
case, which i generally use for this

-a

> 
> irb(main):001:0> x = 3
> => 3
> irb(main):002:0> x.kind_of?(String)
> => false
> irb(main):003:0> x.kind_of?(String, Fixnum)
> ArgumentError: wrong number of arguments(2 for 1)
>         from (irb):3:in `kind_of?'
>         from (irb):3
> irb(main):004:0>
> 
> 
> 
> For instance I have 
> 
> def push(choice)
>   if choice.kind_of?(Zero) == false and choice.kind_of?(One) == false
>     raise "got #{choice.class}"
>   end
>   @choices << choice
> end
> 
> 
> It could turn into
> 
> def push(choice)
>   unless choice.kind_of?(Zero, One)
>     raise "got #{choice.class}"
>   end
>   @choices << choice
> end
> 
> 
> --
> Simon Strandgaard
> 

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