Wrap.Either 1.4.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer prerelease version of this package available.
See the version list below for details. 
dotnet add package Wrap.Either --version 1.4.0
                    


                    

                
NuGet\Install-Package Wrap.Either -Version 1.4.0
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="Wrap.Either" Version="1.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Wrap.Either" Version="1.4.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Wrap.Either" />
                    


                            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 Wrap.Either --version 1.4.0
                    


                    

                
#r "nuget: Wrap.Either, 1.4.0"
#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 Wrap.Either@1.4.0
#: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=Wrap.Either&version=1.4.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Wrap.Either&version=1.4.0
                    


                            Install as a Cake Tool

Wrap: Functional Monads for .NET

GitHub release (latest by date including pre-releases) Nuget GitHub<br/>Test Publish Codacy Badge

Functional monads for .NET (including Maybe - see example) for C# - to handle null values and exceptions better. Railway-oriented programming support via Linq extensions, method chaining, and fuly asynchronous throughout.

Types include:

  • Monad<T>
  • Either<TLeft, TRight>
  • Id<T> (support for int, uint, long, ulong and Guid value types)
  • Maybe<T> (either: Some<T> or None)
  • Result<T> (either: Ok<T> or Failure)

View the Wiki for documentation.

History

Although this library is at v1, it brings together some mature projects I have been working on since 2019. It started with a Result<T> implementation which morphed into Maybe - which reached v10 in November 2025 - and I figured it would be best to have both.

At the same time I was maintaining a StrongId library - which reached v8.5 in November 2024 - to avoid using primitives for Entity IDs. I realised the similarities between Result<T>, Maybe<T> and Id<T> and decided to bring them all together in one library: Wrap.

Licence

MIT

Copyright (c) 2019-2026 bfren (unless otherwise stated)

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed.  net11.0 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on Wrap.Either:

Package Downloads
Wrap

All library
Wrap.Either.Testing

Either.Testing library

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.0.0-beta.3 0 11/13/2026
2.0.0-beta.1 0 11/13/2026
1.4.0 55 11/11/2026
1.3.0 666 11/7/2026
1.2.10 600 10/28/2026
1.2.9 535 10/23/2026
1.2.8 603 9/16/2026
1.2.7 552 8/14/2026
1.2.6 948 7/3/2026
1.2.5 1,004 5/16/2026
1.2.4 523 4/22/2026
1.2.3 560 3/13/2026
1.2.2 261 3/6/2026
1.2.1 216 2/20/2026
1.2.1-beta.1 108 2/20/2026
1.2.0 691 2/17/2026
1.1.0 565 2/8/2026
1.1.0-beta.9 123 2/7/2026
1.1.0-beta.7 110 2/1/2026
1.1.0-beta.6 116 2/1/2026
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