Trailing Closures
When you write a closure as a parameter of a function, the closure is often the last parameter. You see this often in Objective-C as well with blocks. In Objective-C, you write something like this when animating:
[UIView animateWithDuration:1.50 delay:0options:(UIViewAnimationOptionCurveEaseOut|UIViewAnimationOptionBeginFromCurrentState)animations:^{ //do animations here.}];
Notice that this function takes two blocks, and you have one block at the end. You could write the last block as a trailing closure. This means you could write the closure outside the function’s closing parentheses. You could rewrite the last function in Swift like so:
UIView.animateWithDuration(1.50) ...
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