source: doc/papers/llheap/examples/Pingpong.cfa

#include <coroutine.hfa>
#include <fstream.hfa>

coroutine PingPong {
        const char * name;
        unsigned int N;
        PingPong & part;
};

// void ?{}( PingPong & this, const char * name, unsigned int N, PingPong & part ) {
//      this.[name, N] = [name, N];  &this.part = &part;
// }
// void ?{}( PingPong & this, const char * name, unsigned int N ) {
//      this{ name, N, *0p };                                                           // call first constructor
// }
void cycle( PingPong & pingpong ) {
        resume( pingpong );
}
void partner( PingPong & this, PingPong & part ) {
        &this.part = &part;
        resume( this );
}
void main( PingPong & pingpong ) with(pingpong) {               // ping's starter ::main, pong's starter ping
        for ( N ) {                                                                                     // N ping-pongs
                sout | name;
                cycle( part );
        } // for
}
int main() {
        enum { N = 5 };
        PingPong ping = { "ping", N }, pong = { "pong", N, ping };
        partner( ping, pong );
}

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa Pingpong.cfa" //
// End: //