Operators

Set operators

Those operators can be applied to sets and to types that are convertible to sets like lists and sequences. Those operators ignore duplicates.

• A {-} B is the set difference, so elements in A that are not in B.
• A {+} B is the set union, so elements that are either in A or B or both.
• A {&} B is the set intersection, so elements that are in both A and B.
• A {*} B is the cartesian product, the set of all possible tuples of elements of A and B.
• A {^} n is the cartesian power, so similar to a cartesian product but done on the same set n times.
• A {=} B checks that elements of A are also in B and vice versa, ignoring duplicates.
• A {!=} B checks A is not equal to B, ignoring duplicates. That's the contrary of above {=}.
• A {<} B checks that A is a subset B, but A is different than B.
• A {<=} B checks that A is subset of B.
• A {>} B checks that A includes B but A is different than B.
• A {>=} B checks that A includes B, and A can be equal to B.