Unique() to a certain tolerance?

[djsegal]

Maybe related to:

How to make a Set of real values based on rtol?

Lets say you wanted to make a Set of real numbers: Set( [ 1.0, 1+eps(), 2 ] ) Where for all practical purposes, this should reduce to Set([1.0,2.0]) Is there an existing data structure that allows something like: Set(..., rtol=1e-8) to provide this functionality? (as well as maintain all the features of a Set) edit: I guess what I’m asking is: is it possible to change the equality condition for Set checking?