difference(secondSet) { const differenceSet = new Set() const firstSetValues = this.values() firstSetValues.forEach(value => { if (!secondSet.has(value)) { differenceSet.add(value) } }) return differenceSet }
difference(secondSet) { const differenceSet = new Set() const firstSetValues = this.values() firstSetValues.forEach(value => { if (!secondSet.has(value)) { differenceSet.add(value) } }) return differenceSet }