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TypeScript (0.9.1)

The Language

Type Checks

Primitives

A primitive type is a number, bool, string or void.

Before type check:

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<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Runtime.Remoting.Messaging" #>
<#@ output extension=".Designer.cs" #>
using System.Collections.Generic;

namespace <#=CallContext.GetData("NamespaceHint")#>
{

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    [Binding]
    public class StepArgumentTransforms
    {
        static readonly List<string> _positives = "is,can,will,should,does,do,have,correct".Split(',').ToList();
        static readonly List<string> _negatives = "{0}n't,{0}not,{0} not,{0} no,in{0},un{0}".Split(',').SelectMany(s => _positives.Select(word => string.Format(s, word))).ToList();

        [StepArgumentTransformation]
        public bool EnglishBool(string s)
        {
            if (_positives.Contains(s))

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TypeScript (0.8)

• A superset of the JavaScript language.
• Code in TypeScript, compile to JavaScript, deploy JavaScript. (Similar workflow to CoffeeScript)

Advantages

• Very similar to JavaScript.
• Type safety - when you need it. TypeScript is a gradually typed language.
• Less boilerplate.
• Programmer's intent is clearer in the code.

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static class EnumDescriptionMapper<T>
{
    public static readonly Dictionary<T, string> EnumDescriptions;
    public static readonly Dictionary<string, T> DescriptionsValues;
    
    static EnumDescriptionMapper()
    {
        var values = (T[])Enum.GetValues(typeof(T));
        EnumDescriptions = values.ToDictionary(x => x, GetAttributeDescription);
        DescriptionsValues = EnumDescriptions.ToDictionary(x => x.Value, x => x.Key);

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    public static class Extensions
    {
        public static TValue GetOrCreate<TKey, TValue>(this Dictionary<TKey, TValue> d, TKey key, Func<TKey, TValue> valueFactory)
        {
            TValue value;
            if (!d.TryGetValue(key, out value))
            {
                d[key] = value = valueFactory(key);
            }
            return value;

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<#@ template debug="true" hostspecific="true" language="C#" #>
<#@ output extension=".d.ts" #>
<# /* Update this line to match your version of SignalR */ #>
<#@ assembly name="$(SolutionDir)\packages\Microsoft.AspNet.SignalR.Core.2.2.0\lib\net45\Microsoft.AspNet.SignalR.Core.dll" #>
<# /* Load the current project's DLL to make sure the DefaultHubManager can find things */ #>
<#@ assembly name="$(TargetPath)" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="System.Web" #>
<#@ assembly name="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" #>
<#@ assembly name="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" #>

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    public class TileCanvas : Canvas
    {
        public static readonly DependencyProperty ImageSourceProperty = DependencyProperty.Register("ImageSource", typeof(ImageSource), typeof(TileCanvas), new UIPropertyMetadata(null, OnImageSourceChanged));

        private static void OnImageSourceChanged(DependencyObject o, DependencyPropertyChangedEventArgs args)
        {
            ((TileCanvas)o).Rebuild();
        }

        public ImageSource ImageSource

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    public class TileCanvas : Canvas
    {
        public static readonly DependencyProperty ImageSourceProperty = DependencyProperty.Register("ImageSource", typeof(ImageSource), typeof(TileCanvas), new PropertyMetadata(null, ImageSourceChanged));

        private Size lastActualSize;

        public TileCanvas()
        {
            LayoutUpdated += OnLayoutUpdated;
        }

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    /// <summary>
    /// C# port of http://raksy.dyndns.org/cycle_collection.py via http://stackoverflow.com/questions/8946563/add-square-to-polygon-composed-of-squares
    /// </summary>
    static class SquaresToPolygonGenerator
    {
        static readonly Coordinate[] directions = new[]
                                                      {
                                                          Coordinate.West, 
                                                          Coordinate.South, 
                                                          Coordinate.East,