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 forint,uint,long,ulongandGuidvalue types)Maybe<T>(either:Some<T>orNone)Result<T>(either:Ok<T>orFailure)
View the Wiki for documentation.
Although this library is at v1, it brings together some mature projects I have been working on since 2019. It started with a Result 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, Maybe and Id and decided to bring them all together in one library: Wrap.
Copyright (c) 2019-2026 bfren (unless otherwise stated)
