DiscriminatedUnion.CS 0.0.1-alpha

This is a prerelease version of DiscriminatedUnion.CS.

There is a newer prerelease version of this package available.
See the version list below for details.

dotnet add package DiscriminatedUnion.CS --version 0.0.1-alpha

NuGet\Install-Package DiscriminatedUnion.CS -Version 0.0.1-alpha

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="DiscriminatedUnion.CS" Version="0.0.1-alpha" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="DiscriminatedUnion.CS" Version="0.0.1-alpha" />
                    

                            Directory.Packages.props

<PackageReference Include="DiscriminatedUnion.CS" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add DiscriminatedUnion.CS --version 0.0.1-alpha

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: DiscriminatedUnion.CS, 0.0.1-alpha"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package DiscriminatedUnion.CS@0.0.1-alpha

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=DiscriminatedUnion.CS&version=0.0.1-alpha&prerelease
                    

                            Install as a Cake Addin

#tool nuget:?package=DiscriminatedUnion.CS&version=0.0.1-alpha&prerelease
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Discriminated Union

A library that provides functionality to define a Discriminated Union in C#.

Define some types

public class Success
{
    public Success(double value)
    {
        Value = value;
    }

    public double Value { get; }
}

public class Error
{
    public Error(string message)
    {
        Message = message;
    }

    public string Message { get; }
}

Define union type

Union type must be an abstract, partial class.

Every implementation of IUnionWith<> interface adds a type to union.

public abstract partial class Result : IUnionWith<Success>, IUnionWith<Error> { }

Use the union type

public class Program
{
    public static void Main(string[] args)
    {
        var result = GetRoot(-1);
        var outputMessage = result switch
        {
            Result.Success s => s.Value.ToString(CultureInfo.InvariantCulture),
            Result.Error e => e.Message
        };
        
        Console.WriteLine(outputMessage);
    }   

    public static Result GetRoot(double value)
    {
        return value switch
        {
            < 0 => Result.Error.Create("Value cannot be less than zero"),
            _ => Result.Success.Create(Math.Sqrt(value))
        };
    }
}

Limitations

Generic types not supported
Generic method mot supported
Union one type multiple times not supported
T.b.a

There are no supported framework assets in this package.

Learn more about Target Frameworks and .NET Standard.

.NETStandard 2.0
- DiscriminatedUnion.CS.Annotations (>= 0.0.1)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
0.0.8-alpha	259	4/22/2022
0.0.7-alpha	221	4/21/2022
0.0.6-alpha	221	4/19/2022
0.0.5-alpha	237	4/19/2022
0.0.4-alpha	210	4/18/2022
0.0.3-alpha	203	4/17/2022
0.0.2-alpha	228	3/2/2022
0.0.1-alpha	222	2/28/2022