.subtracting()
The .subtracting()
method creates a new set containing the elements from the target set that are not in the given set.
Syntax
newSet = targetSet.subtracting(givenSet)
The elements of givenSet
are removed from the elements of targetSet
and what elements remain are placed into newSet
.
Example
In the example below, the elements from the fruit
set are removed from the elements in the produce
set and the remaining elements are placed in the new veggies
set:
let produce: Set = ["Lettuce", "Apples", "Carrots", "Bananas", "Broccoli", "Onions"]let fruit: Set = ["Apples", "Bananas"]let veggies = produce.subtracting(fruit)print(veggies)
This will output:
["Lettuce", "Carrots", "Broccoli", "Onions"]
Note: A set is an unordered data structure, so output elements may be ordered differently.