This is dispatching, an implementation of multiple dispatch function
prototypes for python.
Multiple dispatch is a subclass of polymorphism, where multiple implementations of the same function with the same name can exist within the same namespace, differentiated only by the number of parameters and their types.
This implementation also allows parameter values to be used as differentiating characteristics, a la Erlang function parameter pattern matching.
When the function name is invoked, an appropriate instance is selected according to its parameter signature.
Glad you asked.
This makes logic much simpler to understand. Complex layers of conditional expressions and data validation are removed from view. Plus, the coder doesn't have to write any of it
- git clone https://github.com/damionw/python-dispatching
- python setup.py install
Look at the files in the distribution's examples directory