>
> hello...
>
> can ne explain me abt this code.... ns2/routing/route.cc i mean how
> these argc==2? and argv[1], compute is compared? how it works?
> int RouteLogic::command(int argc, const char*const* argv)
> {
> Tcl& tcl = Tcl::instance();
> if (argc == 2) {
> if (strcmp(argv[1], "compute") == 0) {
> if (adj_ == 0)
> return (TCL_OK);
> compute_routes();
> return (TCL_OK);
>
The first argument ( = arg[0]) for the binding the TCL commands is
prepared in the class "RouteLogicClass"
[quote]
class RouteLogicClass : public TclClass {
public:
RouteLogicClass() : TclClass("RouteLogic") {}
TclObject* create(int, const char*const*) {
return (new RouteLogic());
}
} routelogic_class;
[/quote]
argc is the number of arguments delivered from the TCL-script
> and also how cost is calculated using argc and argv[]?
> ...
> * double cost = (argc == 5 ? atof(argv[4]) : 1);*
> insert(src, dst, cost);
> ...
this is a short version of "if-then-else"-syntax
if (argc == 5) { double cost = atof(argv[4] } else { double cost = 1}
