작업 환경

C#

javascript

인증 코드

using System;
using System.Threading;
using System.Threading.Tasks;

namespace dotnet
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("before async");
            TestAsync();
            Console.WriteLine("after async");
            Thread.Sleep(3000);
        }

        static async Task TestAsync() {
            Console.WriteLine("    before heavy");
            string result = await HeavyTask("2");
            Console.WriteLine("    after heavy");
            Console.WriteLine("    result: " + result);
            Console.WriteLine("    after result");
        }

        static async Task<string> HeavyTask(string str) {
            await Task.Delay(1000);
            return str;
        }
    }
}

console.log('  before async');
testAsync();
console.log('  after async');

async function testAsync() {
  console.log('    before heavy');
  let result = await heavyTask('2');
  console.log('    after heavy');
  console.log('    result: ' + result);
  console.log('    after result');
}

async function heavyTask(val) {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(val);
    }, 1000);
  });
}

결실

C#

javascript

총결산