Let bindings Mutable bindings Type inference Explicit type annotations Numeric types Strings and interpolation Tuples Records Discriminated unions Options

Function definitions Lambda functions Currying Partial application Pipeline operator Composition operator Recursive functions Tail recursion Higher-order functions Units of measure

Match expressions Tuple patterns Record patterns Union case patterns Option patterns List patterns Guard patterns Active patterns Wildcard patterns As patterns

Lists Arrays Sequences List.map List.filter List.fold Seq expressions Array parallel map Maps Sets

Classes Constructors Properties Methods Interfaces Object expressions Abstract classes Members with overloads Struct records Enums

Async workflows Task computation expression Option computation concept Result workflows Sequence expressions Query expressions Using resource cleanup Return and return! Bind with let! Parallel async

Result type Exceptions Try with Try finally Validation with Result JSON serialization interop File read lines File write text DateTime Regular expressions

MailboxProcessor Async.Start Cancellation tokens Tasks interop Locks ConcurrentDictionary xUnit-style tests FsCheck properties Modules and namespaces Package references in scripts