cxx 0.5.1

Safe interop between Rust and C++
Documentation 
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#[cxx::bridge]
mod ffi {
    struct S {
        c: C,
        r: R,
        s: CxxString,
    }

    extern "C" {
        type C;
    }

    extern "Rust" {
        type R;

        fn f(c: C) -> C;
        fn g(r: R) -> R;
        fn h(s: CxxString) -> CxxString;
    }
}

fn main() {}