delayed ctrl 2

main.d

import std.stdio;
import std.concurrency;
import core.thread;

void main() {
	int k;
    while(true){
        auto childTid = spawn(&spawnedFunc, thisTid);
        Thread.sleep(10.msecs);
        send(childTid, k);
		k++;
		if(k==10) k = 0;
        
    }
    //writeln("main is done.");
}

static void spawnedFunc(Tid ownerTid)
{
    receive((int v){
        Thread.sleep(5000.msecs);
        writeln(v);
    });
}