How to remove a Value from Set in Swift?

Swift – Remove a Value from Set

To remove a value from Set in Swift, call Set.remove() and pass the value as argument to remove().

Set.remove() removes/deletes the value from the Set, if the value is present. If the value is not present, the Set remains as is.

Examples

In the following program, we will take a Set of integer values, and remove a value from it using remove().

main.swift

var x: Set = [1, 4, 9]
print("Original Set:  \(x)")
x.remove(4)
print("After remove:  \(x)")

Output

Now, let us consider a scenario, where the value we would like to remove is not present in the Set.

main.swift

var x: Set = [1, 4, 9]
print("Original Set:  \(x)")
x.remove(16)
print("After remove:  \(x)")

Output

Conclusion

In this Swift Tutorial, we have learned how to remove a value from Set using Set.remove().