Swift,objective-c,c,c++ Hybrid Programming

(1) Swift and C language communication

In Xcode, when the C language file is added to the SWIFT project, Xcode asks if the Create bridging Header is selected.

The C language header file is then referenced in the bridging header.

You can then use the C language function in the swift file.

(2) Swift and OBJECTIVE-C communication

Ibid., referencing the Objective-c language header file in the bridging header.

The classes defined in Objective-c can then be used in swift files.

(3) Objective-c and C + +

The swift language cannot execute code in the C + + language.

Objective-c need to change the. m suffix to. MM, then introduce a C + + header file in the mm file, and then use the classes defined in C + +.

Note: C + + header files cannot be introduced in the OBJECTIVE-C header file, only in mm files.

Note: MM files are called objective-c++ files.

Swift,objective-c,c,c++ Hybrid Programming