IntComparator is a comparator function for comparing integer node values.

NewNode creates a new node.

StringComparator is a comparator function for comparing string node values.

Node represents a node from a binary tree.

ComparatorFunc is a function which compares two values of type T.

FindFunc is the type of the function predicate which will be invoked for each node while looking for a given node.

SkipNodeFunc is a function which returns true, if the currently being visited node should be skipped.

WalkFunc is the type of the function which will be invoked while visiting a node from the binary tree.