Duck Typing: Ruby Study Notes - Best Ruby Guide, Ruby Tutorial

Duck Typing: Ruby Study Notes - Best Ruby Guide, Ruby Tutorial:

In Ruby, we rely less on the type (or class) of an object and more on its capabilities. Hence, Duck Typing means an object type is defined by what it can do, not by what it is. Duck Typing refers to the tendency of Ruby to be less concerned with the class of an object and more concerned with what methods can be called on it and what operations can be performed on it. In Ruby, we would use respond_to? or might simply pass an object to a method and know that an exception will be raised if it is used inappropriately.

Full article: http://rubylearning.com/satishtalim/duck_typing.html