Class Identity-Ordering-Mixin

A mixin class for classes whose instances will be used in FSet collections,
and for which the appropriate equivalence relation is identity (eq).
This is the right choice for the vast majority of mutable classes.

Part of:

package fset


next-serial-numberInitform:'0; Allocation:class.

Direct Method

compareReturns one of :less, :greater, :equal, or :unequal according as x
is less than, greate...