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September 2, 2016 19:26
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Swift Cheatsheet
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//overriding delegates | |
private var delegate: SubclassDelegate? | |
override var superclassDelegate: SuperclassDelegate? { | |
didSet { | |
delegate = superclassDelegate as? SubclassDelegate | |
} | |
} | |
//Testing types with switch http://stackoverflow.com/a/25724652/3191130 | |
for thing in things { | |
switch thing { | |
case 0 as Int: | |
println("zero as an Int") | |
case 0 as Double: | |
println("zero as a Double") | |
case let someInt as Int: | |
println("an integer value of \(someInt)") | |
case let someDouble as Double where someDouble > 0: | |
println("a positive double value of \(someDouble)") | |
case is Double: | |
println("some other double value that I don't want to print") | |
case let someString as String: | |
println("a string value of \"\(someString)\"") | |
case let (x, y) as (Double, Double): | |
println("an (x, y) point at \(x), \(y)") | |
case let movie as Movie: | |
println("a movie called '\(movie.name)', dir. \(movie.director)") | |
default: | |
println("something else") | |
} | |
} | |
//Making init unavailable | |
@available(*, unavailable) | |
override init(tableView: UITableView) { | |
fatalError() | |
} |
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