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SwiftでPreprocessor Macrosを使う

Last updated at Posted at 2016-06-30

ハマったのでメモ。

Preprocessor Macrosとは

Build Settings にある DEBUG などのフラグの設定です。

macros.png

SwiftからPreprocessor Macrosを使用するには

Other Swift Flags-D{フラグ名} を設定します。

swift.png

コードから以下のように使用することができます。

var baseURL: NSURL {
    #if STAGING
        return NSURL(string: "https://hogehoge.stg.piyopiyo")!
    #else
        return NSURL(string: "https://hogehoge.piyopiyo")!
    #endif
}

参考

ios - #ifdef replacement in swift language - Stack Overflow

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