Enum Unit

Represents a unit type.

Namespace: Maki

Assembly: Maki.dll

Syntax

public enum Unit

Examples

A unit type has only one possible value. It is semantically equivalent to void, but can be instantiated. Optional<T> uses Unit to represent the absence of a value.

using Maki;
using System;

namespace Samples
{
    class Program
    {
        // Assume a generic library method which expects a Func<int, T> and applies
        // it to 42
        static T Apply<T>(Func<int, T> func)
        {
            return func(42);
        }

        static void Main(string[] args)
        {
            // If the return type is not meaningful, we would use void but we
            // cannot create a Func<int, void> since cannot be used as a generic 
            // argument. We can return Unit instead.
            Func<int, Unit> func = i => Unit.Singleton;

            Apply(func);
        }
    }
}

Fields

Name	Description
Singleton	Unique value.