klyn.collections.HashSet.isSubsetOf
method
public isSubsetOf(other as HashSet<T>) as Boolean:
Description

Returns true when every element of this set is present in other.

Parameters
ParameterDescription
otherCandidate superset.
Returns

True when this set is a subset of other.

Example
import klyn.collections

assert {1, 2}.isSubsetOf({1, 2, 3})