Converting from Swift string to const char*

Question

I\'m trying to pass a const char * to an old C library converted from a Swift string in Swift.

This is the C function I\'m calling:

artnet_node artne         


        

Answer 1

You didn't specify what your Swift array contains. In any case, you need to convert your Swift array to an array of Int8:

let str = "Hello world"
let cArray = str.cString(using: .utf8)

artnet_new(cArray, 1)