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extension CollectionType where Index: BidirectionalIndexType { | |
func lastIndexOf(isElement: Generator.Element -> Bool) -> Index? { | |
return indices.reverse().filter { return isElement(self[$0]) }.first | |
} | |
} |
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extension Double { | |
func toFloat() -> CGFloat { | |
return CGFloat(self) | |
} | |
} |
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//: Playground - noun: a place where people can play | |
import UIKit | |
func makeView<ViewType: UIView>(f: () -> ViewType, translatesAutoresizingMaskIntoConstraints: Bool) -> ViewType { | |
let view = f() | |
view.translatesAutoresizingMaskIntoConstraints = translatesAutoresizingMaskIntoConstraints | |
return view | |
} |
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extension String { | |
func toUpperCase() -> String { | |
return uppercaseString | |
} | |
} | |
extension SequenceType { | |
@warn_unused_result | |
func mapByCalling<T>(@noescape transformer: (Self.Generator.Element) throws -> (() -> T)) rethrows -> [T] { | |
return try self.map(transformer).map({ $0() }) |
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protocol MyDelegate: class { } | |
final class MyObject { | |
weak var delegate: MyDelegate? | |
} |
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protocol MyDelegate { } | |
final class MyObject { | |
let delegate: MyDelegate | |
init(delegate: MyDelegate) { | |
self.delegate = delegate | |
} | |
} |
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protocol Kennycol { | |
func kennyThang() -> String; | |
} | |
class KennyClass: Kennycol { | |
func kennyThang() -> String { | |
return "example" | |
} | |
} |