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iOS8+SwiftでperformSelectorが使えない

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##iOS8+Swiftでのメモ
performSelector関連メソッドが使えないです。
どうやらメモリーリークを起こすことがあるとかで廃止になっているようです。
Objective-C時代は、よく使用していたので困っていたところ、
やはりstackoverflowにありました。
http://stackoverflow.com/questions/24170282/swift-performselector-withobject-afterdelay
dispatch_afterを使って遅延実行を行うやり方が良いようです。

引数付きの場合もありました。
http://stackoverflow.com/questions/24158427/alternative-to-performselector-in-swift

さすがは、stackoverflow

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