It allows us to treat method as a variable and pass method as a variable for a callback.

它允许我们将方法作为一个变量并传递方法作为回调函数的一个变量。

youdao

Delegate is a reference pointer to a method. It allows us to treat method as a variable and pass method as a variable for a callback.

委托是一个方法的引用指针。它允许我们将方法作为一个变量并传递方法作为回调函数的一个变量。

youdao

You pass this method the KFM credential handle so that you can properly encrypt a message.

将KF M凭证的句柄传递给这个方法，就可以正确地对消息进行加密。

youdao

In the options parameter of this new method, pass nil to access Twitter and Weibo accounts.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog