Finglas

// Bad example of configuration.
class BlogPosts
{
    // The class is coupled to the standard library configuration. Testing and handling
    // future changes is hard.
    public Posts FetchAll()
    {
        Uri url = ConfigurationManager.AppSettings["blogPostsUrl"];

        // Fetch using url.

Finglas

class InstanceRenderer : IRender
{
    public void Render()
    {
        // Render game...
    }
}

// Usage
var instanceRenderer = new InstanceRenderer();

Finglas

// Cannot implement interface. Unable to pass this around.
static class StaticRenderer
{
    public static void Render()
    {
        // Render game...
    }
}

// Usage within Game

Finglas

class SingletonRenderer : IRender
{
    private static SingletonRenderer instance;

    // Prevents the class from being instantiated without getting
    // an instance via the Instance method.
    private SingletonRenderer() { }

    public static SingletonRenderer Instance
    {

Finglas

public class ValidationResults
{
    public ValidationResults(List<Error> errors)
    {
        this.Errors = errors;
    }

    public List<Error> Errors { get; private set; }

    public static ValidationResults Empty()

Finglas

public class RootValidator
{
    private readonly IValidator[] validators;

    public RootValidator(params IValidator[] validators)
    {
        this.validators = validators;
    }

    public ValidationResults Validate(OrderInformation request)

Finglas

class OrderInformation
{
    [Required]
    public BillingAddress BillingAddress { get; set; }

    public bool BillingAddressSameAsDelivery { get; set; }

    // More properties...
}

Finglas

public void Domain(RedemptionService service) {
  IRedemptionResult result = service.Redeem();
  result.Process(this);
}

Finglas

public IRedemptionResult Redeem() {
  if (httpStatus == 200) {
    // Code...
    new SuccessfulRedemption();
  }
  else {
    // Parse errors
    return new RedemptionFailure(errors)
  }
}

Finglas

public void Domain(RedemptionService service) {
  Result result = service.Redeem();

  if (result.Success) {
    // Domain logic for success
  }
  else {
    // Domain logic for failure
  }
}