algebra.properSubset(a, b)
Returns true if A is a strict subset of B (A ⊂ B).
algebra.properSubset({type: "critical"}, {}) //-> true
algebra.properSubset({}, {}) //-> false
Parameters
- a
{Set}: A set.
- b
{Set}: A set.
Returns
{Boolean}:
true if a is a subset of b and not equal to b.
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