delegate_begin_invoke.cpp

Shows how to use xtd::delegate::begin_invoke, xtd::delegate::end_invoke and xtd::delegate::invoke methods.

#include <xtd/threading/thread>
#include <xtd/console>
#include <xtd/delegate>
 
using namespace xtd;
using namespace xtd::threading;
 
auto main()->int {
  auto d1 = delegate<int(ustring)> {[](ustring name)->int {
    console::write_line("(Thread {}) Hello {}!", thread::current_thread().managed_thread_id(), name);
    return name == "xtd" ? 42 : 24;
  }};
  
  auto result = d1.begin_invoke("Gammasoft");
  console::write_line("return = {}", d1.invoke("xtd"));
  console::write_line("return = {}", d1.end_invoke(result));
}
 
// This code produces the following output:
//
// (Thread 1) Hello xtd!
// return = 42
// (Thread 4) Hello Gammasoft!
// return = 24