From: Rick DeNatale <rick.denatale@...>
Date: 2007-05-05T04:39:25+09:00
Subject: Re: RCR?

On 5/4/07, Joel VanderWerf <vjoel@path.berkeley.edu> wrote:

> class String
>    alias - delete
> end
>
> "foobar" - "oa"  # => "fbr"
>
> Using an operator makes it abundantly clear that neither string is being
> modified. But then of course you don't get arity >= 2 version of delete.
>
> Was String#- being reserved for something else?

The thing that vaguely bothers me about this definition of String#- is
that it doesn't seem ot have the same relationship with String#+ that
+ and minus usually have.

irb(main):002:0> class String
irb(main):003:1>   alias - delete
irb(main):004:1>   end
=> nil
irb(main):005:0> "value1" + "value2"
=> "value1value2"
irb(main):006:0> "value1" + "value2" - "value2"
=> "1
-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/