Haitch.Unions.AspNetCore 0.1.0

.NET 11.0 This package targets .NET 11.0. The package is compatible with this framework or higher. 
dotnet add package Haitch.Unions.AspNetCore --version 0.1.0
                    


                    

                
NuGet\Install-Package Haitch.Unions.AspNetCore -Version 0.1.0
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="Haitch.Unions.AspNetCore" Version="0.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Haitch.Unions.AspNetCore" Version="0.1.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Haitch.Unions.AspNetCore" />
                    


                            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 Haitch.Unions.AspNetCore --version 0.1.0
                    


                    

                
#r "nuget: Haitch.Unions.AspNetCore, 0.1.0"
#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 Haitch.Unions.AspNetCore@0.1.0
#: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=Haitch.Unions.AspNetCore&version=0.1.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Haitch.Unions.AspNetCore&version=0.1.0
                    


                            Install as a Cake Tool

Haitch.Unions

Result and Optional union types for .NET with fluent, async-friendly pipelines and typed errors. Part of the Haitch suite of foundational libraries.

Install

dotnet add package Haitch.Unions
dotnet add package Haitch.Unions.AspNetCore        # Result → HTTP results and ProblemDetails
dotnet add package Haitch.Unions.TUnit.Assertions  # TUnit assertions

Quick start

using Haitch.Unions;

Result<User> GetUser(int id) =>
    repository.Find(id) is { } user
        ? user
        : new NotFoundError("User.NotFound", $"User {id} not found");

var name = GetUser(42)
    .Ensure(user => user.IsActive, new ValidationError("User.Inactive", "User is inactive"))
    .Map(user => user.DisplayName)
    .Match(
        onOk: displayName => displayName,
        onError: _ => "Anonymous");

Both are C# unions, so they work with switch expressions.

Documentation

Full documentation is at haitch.dev/libraries/unions.

Product Compatible and additional computed target framework versions.
.NET net11.0 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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
0.1.0 94 9/27/2026