Created
April 15, 2015 11:55
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recursiveFlatMap.swift
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| // Copyright (c) 2015 bysy.io. All rights reserved. | |
| func recursiveFlatMap<TResult>(#root: AnyObject, | |
| @noescape children: (AnyObject) -> [AnyObject]) -> [TResult] | |
| { | |
| var result = [TResult]() | |
| if let value = root as? TResult { | |
| result.append(value) | |
| } | |
| result += children(root).flatMap( { recursiveFlatMap(root: $0, children: children) as [TResult] } ) | |
| return result | |
| } | |
| // Usage | |
| let allLabelsInView = recursiveFlatMap(root: someView, | |
| children: { $0.subviews as! [UIView] }) as [UILabel] |
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