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Languages & runtimes · #fsharp
F# Units of Measure annotate numeric types with dimensions like metres and seconds, turning unit mismatches into compile-time errors. A projectile calculator shows how velocity, time and distance stay typed end-to-end.
Learn how to choose between F# Units of Measure and wrapper types to prevent dimensional errors in engineering and financial applications.
Stop nesting Result.bind calls in F#. Learn how to use Computation Expressions to create a clean, linear validation pipeline that short-circuits on the first error.
Stop relying on boolean flags and nullable fields. Learn how F# Discriminated Unions make illegal domain states unrepresentable and leverage compile-time exhaustiveness checks.
F# units of measure attach compile-time physical dimensions to numeric types, turning silent unit-mismatch bugs into compiler errors. See a kinetic-energy example, understand runtime erasure, and adopt them on API boundaries.
Learn how F# Units of Measure catch unit mismatches at compile time, erase to plain floats at runtime, and integrate with existing .NET code.
Learn how to compose non‑blocking I/O in F# using async workflows, start them correctly, handle cancellation, and avoid common pitfalls.
Learn how to use F# async workflows to read many files in parallel, control concurrency, and handle exceptions. A step‑by‑step example shows measurable speedups over sequential reads.
Learn how to diagnose and fix 'The type X does not have a member Y' errors in F#, covering Option types, Discriminated Unions, and missing extension methods.
dotnet