i) 搜索了谷歌,但无法确切了解该代表是什么,何时使用该代表? 谁能用一个例子解释我?
代表是一种呼吁,但允许你登记不止一次的反馈行动。
也许更容易的一个例子是:你有一名奥恩卡克代表。 否则就没有发生。 但是,你可以登记1、2或2次或1次国家报警,这些报警将全部收受奥克事件。
代表是一个与代表团设计模式有关的概念。 请允许我向大家指出,“我们”的纽带使你能够从那里接管研究。
In simplest terms, a delegate is just like a function assigned to a variable (I m not sure if that s really what happens under the hood but it helps to think of it like that). If you have programmed in C++, its like the address of a function or the return value of GetProcAddress() but with more functionality and typesafety.
You can call the delegate like regular function, pass it as a function argument (like a regular variable) and it can also be null. Google it again (or visit the links of other posters), there are lots of materials about delegates.
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