alexander-williamson

            Mapper.CreateMap<List<ObjectId>, List<string>>().ConvertUsing(o => o.Select(os => os.ToString()).ToList());
            Mapper.CreateMap<List<string>, List<ObjectId>>().ConvertUsing(o => o.Select(os => ObjectId.Parse(os)).ToList());
            Mapper.CreateMap<ObjectId, string>().ConvertUsing(o => o.ToString());
            Mapper.CreateMap<string, ObjectId>().ConvertUsing(s => ObjectId.Parse(s));

alexander-williamson

using System;
using System.Linq;
using NUnit.Framework;

namespace Alexw.Katas.BinarySearch
{
    public class BinarySearchTests
    {
        private static readonly DataItem[] Items = 
        {

alexander-williamson

function binSearch(arr, toSearch) {
  var lowerBound = 0, upperBound = arr.length -1;
  
  while(true) {
    var index = Math.floor((upperBound - lowerBound) / 2 + lowerBound);
    var current = arr[index];
    
    if(current === toSearch) return index;
    
    if(current > toSearch) {

alexander-williamson

function bowlingScore(frames) {
  const rolls = frames.split("").filter(function(value, index) { return value != " " });
  var frames = getFramesFromRolls(rolls);
  var score = calculateScoreFromFrames(rolls, frames);
  return score;
}

function getFramesFromRolls(rolls) {
  
  if (rolls === undefined || rolls.length == 0) { return []; }

alexander-williamson

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BmbxuPwQa2lc/FVzBcNJ7UAyJxM6wuqIj61tLrc4wSX0szH/Ev+nYRRuWlolflfl" crossorigin="anonymous">

<div class="editor">
  <h2>Input</h2>
  <textarea id="editor" name="input-textarea" onchange="update(this)" placeholder="Try ^6hello world">
  </textarea>
  <ul class="examples">
    <li><button type="button" onClick="window.rainbow()">Rainbow</button>
  </ul>
</div>

alexander-williamson

// guiding principles
// 1. to think in command / query separation - there are commands and there are queries
//    strict CQRS recommends that commands do not return results apart from creation which returns an ID
//    I can agree with that at a repo events level but not sure about command handlers however that does work here

// Useful links
// https://github.com/gregoryyoung/m-r/blob/master/SimpleCQRS/CommandHandlers.cs

interface ICommandHandler<Command, ResultType> {
  // you don't really need this interface but I am enforcing command handler shapes with it