Intro to F# in 2021

Get started

Create a free GitPod account at https://www.gitpod.io/ (Tip login with your GitHub account).

Fork this repository and create the following url:

https://gitpod.io/#https://github.com/{your-user-name}/intro-fsharp-2021

This should open and create your Gitpod workspace.

Checkout a new branch for your solution git checkout -b solutions.

Feel free to submit PRs with small fixes or typos if you encounted any.

Language features

Run a single unit test from the command line:

cd src/LanguageFeatures

dotnet test --filter DisplayName~'if / else if'

See https://docs.microsoft.com/en-us/dotnet/core/testing/selective-unit-tests?pivots=xunit

F# Core Docs: https://fsharp.github.io/fsharp-core-docs/

Tools

A couple useful .NET tools are installed in the ./.config/dotnet-tools.json file.

dotnet-scripts

Can be used to run the *.csx scripts in src/intro-fp.

See https://github.com/filipw/dotnet-script

fantomas-tool

A tool to format your F# code.
Run

dotnet fantomas src -r

to format all code.

See https://github.com/fsprojects/fantomas

dotnet-fsharplint

Lint your F# code, useful for minor improvements.

dotnet dotnet-fsharplint lint ./intro-fsharp-2021.sln

See https://github.com/fsprojects/FSharpLint

fable

The F# to JavaScript compiler.

See https://fable.io/