From: Joel VanderWerf <vjoel@...>
Date: 2002-12-18T17:17:43+09:00
Subject: Re: Regex#=== with non-string argument

Greg Millam wrote:
> On Wed, 18 Dec 2002, Joel VanderWerf wrote:
> 
> 
>>x = 1
>>
>>case x
>>when 5;       puts "5"
>>when 42;      puts "42"
>>when /abc/;   puts "matches /abc/"
>>when "xyz";   puts "xyz"
>>end
> 
> 
> x = 1
> puts case
>   when x == 5; "5"
>   when x == 42; "42"
>   when /abc/ =~ x.to_s; "matches /abc/"
>   when "xyz" == x.to_s; "xyz"
>   else "none"
> end
> 
> case without a statement matches any expression that evaluates to a
> non-false, non-nil argument
> 
> Hope that's what you want
> - Greg.

Thanks, but no. I happily discovered that fact a few days ago, but my 
real interest here is not case but a list of objects that respond to 
:=== (and that's all I know about them), and a piece of code that 
iterates over them looking for a match with a fixed object. I don't know 
whether that fixed object has a #to_s method, or what its semantics are, 
so I can't use it. Anyway, I don't want to lose the distinction between 
Object and "Object".