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【Swift】処理をコンマn秒止める(遅延処理)

Posted at

どういうことか

// 1秒止める
sleep(1)

上記のコードで処理を1秒止めることができるが、例えば sleep(0.5) と書くとエラーになる。
sleep関数の引数は Uint32 で指定しなければならず、これは『32ビット符号なし整数』のことで……まあとにかく浮動小数点は指定できないのだ。

Thread.sleep

これでいける。

// 0.5秒止める
Thread.sleep(forTimeInterval: 0.5)
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