How to detect if an Objective-C header is being used/compiled from Swift

Question

Is there any preprocessor macro that tells the Objective-C compiler that the header is being included from Swift (inside a Framework)? I want to conditionally make available some methods to Objective-C, but not to Swift.

This is a follow-on to this question.

Yeah, it seems to be new in *Xcode 7*. If you add an answer with this info, I'll accept it. You can answer to both questions, as the same solution applies to both. — Ricardo Sanchez-Saez, Aug 19 '15 at 20:43

score 0 · Accepted Answer · answered Jan 20 '16 at 14:47

0

Answer by @mattt:

Use the NS_SWIFT_UNAVAILABLE macro (available only on Xcode 7 and up).

answered Jan 20 '16 at 14:47

Ricardo Sanchez-Saez

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score 0 · Answer 2 · answered Oct 13 '17 at 10:07

Here a nice explanation about some macro's in objc to work with swift.

https://academy.realm.io/posts/altconf-nikita-lutsenko-objc-swift-interoperability/

Like mentioned you have the NS_SWIFT_UNAVAILABLE but also NS_SWIFT_NAME for example which allows you to change the signature of your functions for swift.

How to detect if an Objective-C header is being used/compiled from Swift

2 Answers2