Swift - How do you DECIDE the optimal “Deployment Target” for your iOS app

对着背影说爱祢 提交于 2019-12-02 05:01:00

Thats actually a new feature of Xcode 7 and Swift 2.0 see from swift website:

Swift Apple

On the website it states, under Availability

Swift 2.0 has built-in availability checking to make it easy to build the best possible app for each target OS version. The compiler will give you an error when using an API too new for your minimum target OS

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