taxfyle/fxkit

Functional programming utilities and Roslyn components for writing expressive C#

FxKit

A library for C# to enable functional, railway-oriented programming using common abstract data types like Result, Option and Validation. Also includes Roslyn-based analyzers and source generators for generating union types, exhaustive Match, and much more.

Documentation

Visit the official documentation to get started.

Installation

FxKit is broken up into the following packages:

• FxKit: The core library. Can be used on its own.
• FxKit.CompilerServices: Roslyn analyzers and source generators.
• FxKit.CompilerServices.Annotations: Attributes used by the compiler services.
• FxKit.Testing: Contains test helpers for asserting on the FxKit types.

It is recommended to add the following global using to make it easy to construct the core data types.

global using static FxKit.Prelude;

This makes functions like Some(value) and Ok(value) available everywhere.

License

MIT

fxkit's Issues

Binding Result with Option

What you think about creating an operator for binding Result and Option?

Example:

Optional(value).OkOr(NotEmptyStringError.Null)
    .FlatMap(v => StringParser.NonNullOrWhiteSpace(v).OkOr(NotEmptyStringError.Empty));

Optional(value).OkOr(NotEmptyStringError.Null)
    .Apply(StringParser.NonNullOrWhiteSpace, NotEmptyStringError.Empty); // <---

I'm not sure about the operator naming.

Create documentation

Any work already started regarding the documentation? What you think of Vitepress?

I'm using it for one of my libraries and it very easy to deal with.

• Source code: https://github.com/skarllot/Expressions/tree/main/docs
• Published page: https://fgodoy.me/Expressions/