Funcky 2.4.0

.NET 5.0 This package targets .NET 5.0. The package is compatible with this framework or higher. .NET Core 3.1 This package targets .NET Core 3.1. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Funcky --version 2.4.0                

                    
                

            
NuGet\Install-Package Funcky -Version 2.4.0
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="Funcky" Version="2.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Funcky --version 2.4.0                

                    
                

            
#r "nuget: Funcky, 2.4.0"
#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. 
// Install Funcky as a Cake Addin
#addin nuget:?package=Funcky&version=2.4.0

// Install Funcky as a Cake Tool
#tool nuget:?package=Funcky&version=2.4.0

Funcky is a functional library for C# which encourages correct usage of the functional programming paradigm.

Packages

Funcky

NuGet package

Funcky.XUnit

NuGet package

Funcky.EntityFrameworkCore

NuGet package git: polyadic/funcky-efcore

Provides interoperability between Funcky and EF Core

Motivation

Functional programming is the oldest of the three major programming paradigms, none the less it is the last which gets wide spread usage. Even in languages like C++, Java or C# we want to use a functional style of programming.

Linq is the first Monad which got wide spread use in C#, and most C# programmers were not even aware of it beeing a monad, which probably helped.

Mark Seemann points out that "Unfortunately, Maybe implementations often come with an API that enables you to ask a Maybe object if it's populated or empty, and a way to extract the value from the Maybe container. This misleads many programmers [...]"

https://blog.ploeh.dk/2019/02/04/how-to-get-the-value-out-of-the-monad/

This library is based on his example code, and should grow slowly to a library which helps to use and understand the Functional programming paradigm. Functional programming is side-effect free and the strong type system can be used to make illegal state impossible.

Use functional programming as an additional asset to write correct code.

Documentation

Documentation: in progress

Other libraries

There are several libraries available which try to give you more functional features in C#. So

  • Funcky wants to be functional C#.
  • Funcky tries to use the C# monadic interfaces as an advantage
  • We do not provide our own RecordType. Use Fody or wait for C# 9

LanguageExt

This library is probably the most complete attempt to functional programming in C#, however it is very opinionated and admits to be not very idiomatic in C#. It certainly is more mature than Funcky and has a lot of features. If you want to go fully functional and for some reason cannot use F# this might be the way to go.

Eff

Eff is inspired by the Eff programming language and the implementation of Algebraic Effects. It's only purpose is the handling of side effects and using the await syntax in a very elegant way.

We think the approach is very nice but cumbersome in usage, however we really love the appraoch with the await syntax. The library is very specialised an can be used in combination with any other functional style library.

MoreLinq

MoreLinq provides more extension functions on IEnumerable, but has no additional functional concepts. We also provide additional extension functions on IEnumerable, but we also try to make them work in combination with our Monads and the async Monad. The different Monad-Syntaxes in C# (Linq, async) do not play niceley together.

Galaxus.Functional

This is a very simple Functional Library with similar ideas in spirit but not as mature.

And more…

Features

See our documentation (still in progress)

Contributing

Contributions are more than welcome. Just open a PR 😃 If you want something easy to work on, there are a few issues marked with good first issue.

Documentation

To build the documentation you need mdBook installed. When working on the documentation it's useful to have mdbook watching and automatically rebuilding on changes:

mdbook serve Documentation

Dependency Policy

The core Funcky package is not allowed to have dependencies. Backwards compatibility packages from Microsoft that are included in newer framework versions (e.g. Microsoft.Bcl.AsyncInterfaces, System.Collections.Immutable) are exempt from this rule.

Interoperability with other libraries should be provided in separate packages (e.g. Funcky.Xunit, Funcky.NewtonsoftJson)

Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 is compatible. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (14)

Showing the top 5 NuGet packages that depend on Funcky:

Package Downloads
Messerli.LinqToRest

A LINQ QueryProvider that uses a REST API as its data source.
Messerli.FileSystem

File system abstraction that allows mocking file system actions
Funcky.Xunit

Package to use Funcky with xUnit
Messerli.ChangeCase

Transform a string between different casings.
apophis.Lexer

The lexer was exactracted from the simple arithmetic parser.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
3.4.0 576 4/30/2024
3.3.0 2,686 7/14/2023
3.2.0 2,114 5/17/2023
3.1.0 1,942 11/16/2022
3.0.0 6,268 9/14/2022
2.7.1 695 6/13/2022
2.7.0 3,206 4/20/2022
2.6.0 964 12/16/2021
2.5.0 1,786 6/29/2021
2.4.1 512 5/21/2021
2.4.0 1,982 2/25/2021
2.3.0 1,089 11/27/2020
2.3.0-beta.1 246 10/22/2020
2.2.0 2,104 8/24/2020
2.1.1 747 8/14/2020
2.0.0 2,065 7/14/2020
2.0.0-rc.2 290 6/22/2020
2.0.0-rc.1 267 6/15/2020
1.8.1 565 6/10/2020
1.8.0 506 6/10/2020
1.7.0 570 6/8/2020
1.6.0 516 5/26/2020
1.5.1 1,721 2/21/2020
1.5.0 570 2/12/2020
1.4.0 529 2/7/2020
1.3.0 756 10/24/2019
1.2.0 837 7/22/2019
1.1.0 1,811 4/4/2019
1.0.2 1,208 3/12/2019
1.0.1 626 3/11/2019
1.0.0 701 3/10/2019