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Ooh, nice ripoff from Smalltalk. A class called MethodFinder for looking up methods based on what they should return.

You use MethodFinder.show( "hello", 5 ) and it’ll suggest the length and size methods. Maybe we could hack it to be a bit more terse?

 >> "hello".what? == 5
 "hello".length == 5
 "hello".size == 5
 => ["length", "size"]
 >> "foo".what?("bar") == "foobar" 
 "foo".<<("bar") == "foobar" 
 "foo".+("bar") == "foobar" 
 "foo".concat("bar") == "foobar" 
 => ["<<", "+", "concat"]

Just add to Andrew’s code:

 class MethodFinder
 def initialize( obj, *args )
 @obj = obj
 @args = args
 end
 def ==( val )
 MethodFinder.show( @obj, val, *@args )
 end
 end
 class Object
 def what?(*a)
 MethodFinder.new(self, *a)
 end
 end

In any case, use the syntax easiest to remember. Lest we need a whatwhat?