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var set: Set<Int> = [1,2,3,4] | |
func f1<T>(value: T, set: inout Set<T>) { | |
if set.contains(value) { | |
set.remove(value) | |
} else { | |
set.insert(value) | |
} | |
} | |
func f2<T>(value: T, set: inout Set<T>) { | |
set.formSymmetricDifference([value]) | |
} | |
f1(value: 1, set: &set) | |
print(set) // [2,3,4] | |
f1(value: 1, set: &set) | |
print(set) // [2,3,4,1] | |
f2(value: 1, set: &set) | |
print(set) // [2,3,4] | |
f2(value: 1, set: &set) | |
print(set) // [2,3,4,1] |
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