This module defines the components of trees, graphs where edges have an in-degree that of 1. The types defined in this module are concrete implementations that inherit from the abstract types in the abstract trees module.

Depending on the concrete subclass, edges in trees either have lengths formatted as integers or lengths formatted as floating point numbers. A concrete node implementation. A concrete edge implementation, with float length. A concrete root edge implementation, with float length. A concrete edge implementation, with int length. A concrete root edge implementation, with int length. A concrete tree implementation, with floating point edge lengths. A concrete tree implementation, with integer edge lengths.