If we need to remove an element from a set, we can use .remove().

This method can remove a single item from a set with the following syntax:

setName.remove(Value)

Let’s revisit the set plantShelf from the previous exercise:

var plantShelf: Set = ["Haworthia", "Graptopetalum", "Echeveria", "Corpuscularia"]

Unfortunately, we overwatered the "Haworthia" plant, and it wilted away.

To remove this value from plantShelf using .remove(), we can use this code:

plantShelf.remove("Haworthia")

If we tried to remove a value that didn’t exist within the set plantShelf, like "Astridia", the set would be unaffected.

If we wanted to remove every single element from a set, we could use the .removeAll() method:

setName.removeAll()

Let’s say we are moving our plant collection over to the window sill. Removing all the values from plantShelf looks like this:

plantShelf.removeAll()

If we print the value of plantShelf after removing all the values, the output looks like this:

[]