operator can be used to update object from new optional value.This can be used when we do not want to get updated to nil from new optional value. Following object Frequently used when mapping server response since we do not get all params in every response and by using this operator we do not have to check for all non optionals value again and again. infix operator ?= : MultiplicationPrecedence func ?= <T> ( property: inout T?, newValue: T?) { if let value = newValue { property = value } } func ?= <T> ( property: inout T, newValue: T?) { if let value = newValue { property = value } } Usage var name: String? = nil screenName ?= name
