noseratio

#nullable enable
using System;

namespace conapp
{
    /// <summary>
    /// Resembling JavaScript's EventTarget
    /// </summary>
    public class EventTarget<T> where T : EventArgs
    {

noseratio

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

namespace App
{
    class Program
    {
        static async Task<int> Main()
        {

noseratio

void async function() {

  // DeferredAsClass
  class DeferredAsClass {
    resolve;
    reject;
    promise = new Promise((s, f) => { this.resolve = s; this.reject = f; });
  }

  // DeferredAsClassWithConstructor

noseratio

void async function() {
  "use strict";

  // extending Promise
  class PromiseEx extends Promise {
  }

  const iterations = 500_000;
  const cached = Promise.resolve(); 

noseratio

void async function() {

  // extending Promise
  class PromiseEx extends Promise {
  }

  // extending Promise as Deferred
  class Deferred extends Promise {
    resolve;
    reject;

noseratio

void async function() {
  function createDeferred() {
    let resolve, reject;
    const promise = new Promise((...args) => [resolve, reject] = args);
    return Object.freeze({
      resolve, 
      reject,
      promise,
      then: promise.then.bind(promise)
    });

noseratio

# https://www.nuget.org/packages/Microsoft.Net.Compilers.Toolset

md cs-repl | cd
nuget install Microsoft.Net.Compilers.Toolset 

# run a CS script, a useful alternative to PowerShell itself
echo 'Console.WriteLine("hello");' > script.csx
. (gci -recurse csi.exe).FullName script.csx 

# run in REPL mode

noseratio

using System;
using System.Threading.Tasks;

public class Program
{
  public async static Task Main()
  {
    await Task.Delay(1000);
    Console.WriteLine("Hello after a delay!");
  }

noseratio

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net5.0-windows</TargetFramework>
    <OutputType>Exe</OutputType>
    <DisableWinExeOutputInference>true</DisableWinExeOutputInference>
    <UseWinForms>true</UseWinForms>
    <UsingMicrosoftNETSdkWeb>true</UsingMicrosoftNETSdkWeb>

noseratio

// https://dev.to/noseratio/await-inside-javascript-template-strings-3kbj
//
// save this as .mjs or as "node --input-type=module < file.js"

const delay = (ms, result) => new Promise(r => setTimeout(r, ms, result));

const interpolated = `Hello, ${await delay(1000, "World!")} Is this sync or async?`;

console.log(interpolated)