DuckTypeChecker is a module that checks to see if an objects conforms to a Duck Type.

This version features improvements in the documentation.

Here is an example the DuckTypeChecker module:

require 'ducktypechecker'
s = Struct.new(:a)
o = s.new(1)
DuckType.check(o, [:a, :b], 'o')
# TypeError - "Variable 'o' needs to implement 'b'."