// Client

class Sender
{
    new()
    {
        var prompt = delegate(object res) {
            print "Your result is: " + res.result;
        };

        // Call 'Add' method on server
        @Handler.Add( first: 3, second: 10 ) {
            onResponse: prompt
        };

            // Call 'Sub' method on server

        @Handler.Sub( first: 5, second: 2 ) {
            onResponse: prompt
        };

    }
}


// ----------------------------

// Server

class Handler : RequestHandler
{
    new() { }

    // Create our methods that respond to ajax requests
    ajax
    {
        Add(params) return params.first + params.second;

        Sub(params) return params.first - params.second;
    }
}