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

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

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

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

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

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

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.Net;
using RestSharp;

namespace Alexw.ParkingAvailable
{
    public class KibanaClient
    {
        private readonly IRestClient _client;
        private readonly string _token;

alexander-williamson

using System.Net;
using System.Net.Sockets;

// taken from https://stackoverflow.com/questions/138043/find-the-next-tcp-port-in-net

public static class TcpPorts
{
    public static int GetFreeTcpPort()
    {
        var l = new TcpListener(IPAddress.Loopback, 0);

alexander-williamson

/// <summary>
/// Loop until a condition is met and your function returns true
/// </summary>
/// <param name="action">The delegate to run. Return true to exit the loop.</param>
/// <param name="delay">Return a timespan for the delay between loops</param>
/// <param name="whentoStop">Return true when the loop should stop when catching exceptions or looping</param>
public static void DoUntil(Func<bool> action, Func<int, TimeSpan, TimeSpan> delay, Func<int, TimeSpan, bool> whentoStop)
{
    var startedUtc = DateTime.UtcNow;
    var amountOfRetriesAllowed = 0;

alexander-williamson

# Your use statement can do all the work for you

app.Use(async (context, next) =>
{
  if (!IsAuthenticated(context))
  {
    context.Response.StatusCode = 401;
    var bytes = System.Text.Encoding.UTF8.GetBytes("You are not authorised!");
    context.Response.Body.Write(bytes, 0, bytes.Length);
    await Task.FromResult(context);