<commit_before># Argument Matching for Trailing Closures

Where trailing closures are used to pass one or more arguments to a function, the argument label for the first trailing closure is always omitted:

```swift
func animate(
  withDuration duration: Double, 
  animations: () -> Void, 
  completion: (() -> Void)? = nil
) { /* ... */ }

animate(withDuration: 0.3) /* `animate:` is unwritten. */ {
  // Animate something.
} completion: {
  // Completion handler.
}<commit_msg>[docs] Address typo in trailing closure education note<commit_after># Argument Matching for Trailing Closures

Where trailing closures are used to pass one or more arguments to a function, the argument label for the first trailing closure is always omitted:

```swift
func animate(
  withDuration duration: Double, 
  animations: () -> Void, 
  completion: (() -> Void)? = nil
) { /* ... */ }

animate(withDuration: 0.3) /* `animations:` is unwritten. */ {
  // Animate something.
} completion: {
  // Completion handler.
}
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