Options.insert(_:)

Description#

In the following example, the .secondDay shipping option is added to the freeOptions option set if purchasePrice is greater than 50.0. For the ShippingOptions declaration, see the OptionSet protocol discussion.

let purchasePrice = 87.55

var freeOptions: ShippingOptions = [.standard, .priority] if purchasePrice > 50 { freeOptions.insert(.secondDay) } print(freeOptions.contains(.secondDay)) // Prints "true"

• Parameter newMember: The element to insert.
• Returns: (true, newMember) if newMember was not contained in self. Otherwise, returns (false, oldMember), where oldMember is the member of the set equal to newMember.