citynight
/ Delegate.swift
Created
April 2, 2018 12:05
— forked from onevcat/Delegate.swift
An auto-weak delegate for handle modern delegate pattern.
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| class Delegate<Input, Output> { | |
| private var block: ((Input) -> Output?)? | |
| func delegate<T: AnyObject>(on target: T, block: ((T, Input) -> Output)?) { | |
| self.block = { [weak target] input in | |
| guard let target = target else { return nil } | |
| return block?(target, input) | |
| } | |
| } | |
| func call(_ input: Input) -> Output? { |