:mod:`FunctionSlot` -- function slots module
The *function slot* concept is large used by Pypso, the idea
is simple, each swarm operator or any operator, can be assigned
to a slot, by this way, we can add more than simple one operator,
we can have for example, two or more mutator operators at same time,
two or more evaluation functions, etc. In this :mod:`FunctionSlot` module,
you'll find the class :class:`FunctionSlot.FunctionSlot`, which is the slot class.