C# Equivalent of Swift typealias

Question

I'm new to C# and used to Swift, so please bear with me.

I would like to use types in C# exactly in the manner described by the Swift code below:

typealias Answer = (title: String, isCorrect: Bool)
typealias Question = (Question: String, Answers: [Answer])

For further example, it is now very simple to make a Question in swift using the above typealias's:

Question(Question: "What is this question?", Answers: [("A typedef", false), ("FooBar", false), ("I don't know", false), ("A Question!", true)])

I've tried using using statements and creating abstract classes to no avail so far.

Thanks in advance.

Answer 1

This thread is old but I would to add a straightforward answer as the none of the existing ones are.

C# does not have an exact equivalent to typealias:

• The typealias definition in Swift is persistent and can be reused elsewhere.

• The using definition only persists in the file where it is defined. It cannot be used in other parts of the project.

Answer 2

I would a class for reference types.

public class Answer
{
   public string Title {get;set;}
   public bool IsCorrect {get;set;}
}

or a struct for a value type

public struct Question
{
  public string Question;
  public Answer[] Answers;
}

Also, as an FYI the using statement is used with disposable objects to make sure the resources get released.