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DanielCardonaRojas/optional_assignement.swift

Created April 26, 2022 16:26
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Optional assignment operator #swift
Raw
optional_assignement.swift
infix operator ??= : AdditionPrecedence
extension Optional {
static func ??= (_ rhs: inout Self, _ lhs: Self) {
if rhs == nil {
rhs = lhs
}
}
}
var a: Int? = nil
var c: Int? = 9
let b = 13
a ??= b
c ??= b
print(a)
print(c)
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