From: Gregory Brown <gregory.t.brown@...>
Date: 2006-07-05T03:12:35+09:00
Subject: Just For Fun: Ternaryish thingie on steroids

Not sure if this will ever be useful, but I thought it would be neat
if i could build a little wrapper class that allowed me to pass in two
objects, then define a conditional lambda and depending on what it
returned, forward requests to one object or the other.

That sounds really complicated, but here is a simple example

>> a = Switch.new(1,2)
>> a.condition = lambda { |x| x.options.foo }
>> a + 1
=> 3
>> a.options.foo = true
=> true
>> a + 1
=> 2
>> a.options.foo = false
=> false
>> a + 1
=> 3

The neat thing is the objects can be lambdas, which can make things a
bit more complex.  See the example below.

http://pastie.caboo.se/3361

I put the code online.  It was a two minute hack, so I have no idea if
anyone else might find it fun or interesting, but i did, so I figured
I'd share.

http://rubyurl.com/dHd

Happy fourth to those celebrating it!