Learn Fsharp - 10 Code Examples & CST Typing Practice Test
F# is a functional-first, strongly typed language on the .NET platform. It blends functional, object-oriented, and imperative styles, offering concise syntax, powerful type inference, and high reliability. Ideal for data science, finance, domain modeling, and backend services.
Learn FSHARP with Real Code Examples
Updated Nov 18, 2025
Learning Path
Functional thinking basics
DU’s, records, modules
Pipelines & pattern matching
Async workflows
Domain modeling & DDD
Skill Improvement Plan
Week 1: Syntax, lists, functions
Week 2: DU’s, records, modules
Week 3: Async workflows, data pipelines
Week 4: Real-world app + DDD
Interview Questions
What are Discriminated Unions?
How does F# type inference work?
What is a computation expression?
Explain async workflows.
Difference between lists, arrays, sequences?
Cheat Sheet
Record: type Person = { Name: string; Age: int }
DU: type Shape = Circle of float | Square of float
Match: match x with | Some v -> ... | None -> ...
Pipe: x |> f |> g
Async: async { let! r = fetch(); return r }
Books
Domain Modeling Made Functional
Stylish F#
Get Programming with F#
Tutorials
F# for Fun and Profit
Get Programming with F#
Microsoft Learn F#
Official Docs
F# Official Documentation
.NET API Browser
F# Software Foundation
Community Links
Reddit r/fsharp
F# Slack
FSF community
Community Support
F# Software Foundation
F# Slack
Reddit r/fsharp
.NET Foundation
Frequently Asked Questions about Fsharp
What is Fsharp?
F# is a functional-first, strongly typed language on the .NET platform. It blends functional, object-oriented, and imperative styles, offering concise syntax, powerful type inference, and high reliability. Ideal for data science, finance, domain modeling, and backend services.
What are the primary use cases for Fsharp?
Financial modeling and trading systems. Data science and ML workflows. Backend microservices on .NET. Domain-driven design (DDD). Scientific computation. Scripting & automation. High-reliability enterprise applications
What are the strengths of Fsharp?
Concise & expressive code. Enterprise-grade reliability on .NET. Strong static typing with inference. Excellent for domain modeling. Great for data processing & analysis
What are the limitations of Fsharp?
Smaller community than C#/Python. Not ideal for UI-heavy applications. Learning curve for functional thinking. Corporate teams often prefer C#. Tooling is improving but not perfect
How can I practice Fsharp typing speed?
CodeSpeedTest offers 10+ real Fsharp code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.