小编Bra*_*Foo的帖子

很难搞清楚如何使用swift正确声明/使用块.什么是以下代码的快速等价物？

谢谢.

^(PFUser *user, NSError *error) {
if (!user) {
    NSLog(@"Uh oh. The user cancelled the Facebook login.");
} else if (user.isNew) {
    NSLog(@"User signed up and logged in through Facebook!");
} else {
    NSLog(@"User logged in through Facebook!");
}