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Swift 2のguardはif letのようにOptional bindingを複数書いたり、whereを書いたりできる

Last updated at Posted at 2015-10-12

タイトルの通りなのですが、Swift 2のguardではif letのようにOptional bindingを複数書いたりできます。

guard let text = self.ageTextField.text, age = Int(text) else {
    return
}

また、if letのようにwhereで条件を指定することもできます。

guard let name = self.nameTextField.text where !name.isEmpty else {
    return
}

この書き方ができることを知っていれば、コードをよりスッキリ書くことができそうです。

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