From: Daniel Sheppard <daniels@...>
Date: 2006-05-26T16:18:29+09:00
Subject: Re: Method '!='

> Hello all.
> 
> I've tried something like this:
> 
> 'a'.send('==', 'b') #it works, returns true
> 
> But
> 
> 'a'.send('!=', 'b') 
> 
> said to me:
> 
> tricks.rb:11:in `Kernel#send': undefined method `!=' for "a":String
> (NoMethodError)

The syntax magic makes != work... but that doesn't mean you can't create
methods to do the same things. define_method is much more lenient on
method names than def is:

class Object
  define_method(:<) {|arg| self < arg }
  define_method(:>) {|arg| self > arg }
  define_method(:!=) {|arg| self != arg }
end

1.send(:>, 5)
=> false

1.send(:<, 5)
=> true