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Set - Set -- set difference

Synopsis

Operator: -
Usage:

x - y
Inputs:
- x, a set, or a list
- y, a set, or a list
Outputs:
- a set, or a list, consisting of those elements of x not in y

Description

At least one of x, y must be a set, and the other may be a list. If x is a list, then so is the result.

i1 : set{a,b,c} - set{a}

o1 = set {b, c}

o1 : Set

i2 : set{a,b,c} - {a}

o2 = set {b, c}

o2 : Set

i3 : {a,b,c} - set{a}

o3 = {b, c}

o3 : List

See also

Set -- the class of all sets

Ways to use this method:

List - Set
Set - List
Set - Set -- set difference