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Bindings and Types
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Function definitions Lambda functions Currying Partial application Pipeline operator Composition operator Recursive functions Tail recursion Higher-order functions Units of measure
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Match expressions Tuple patterns Record patterns Union case patterns Option patterns List patterns Guard patterns Active patterns Wildcard patterns As patterns
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Lists Arrays Sequences List.map List.filter List.fold Seq expressions Array parallel map Maps Sets
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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
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Result type Exceptions Try with Try finally Validation with Result JSON serialization interop File read lines File write text DateTime Regular expressions
Concurrency and Testing
MailboxProcessor Async.Start Cancellation tokens Tasks interop Locks ConcurrentDictionary xUnit-style tests FsCheck properties Modules and namespaces Package references in scripts
F# / Functions

Pipeline operator

Learn Pipeline operator in F# through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.

10 min read • Beginner

Pipeline operator is a focused F# lesson inside Functions. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.

Trace the example from its inputs through Pipeline operator and identify the behavior that would change if that construct were removed or replaced. Pay attention to the language-specific rules shown by the syntax, because neighboring lessons intentionally exercise different mechanisms.

Topic-specific example

fsharp-0015-cc5a1a08b8.fsx
fsharp Try It Live 
[1..6]
|> List.filter (fun n -> n % 2 = 0)
|> List.map (fun n -> n * 10)
|> printfn "%A"
Edge case / engineering note

For Pipeline operator, test one realistic boundary: empty data, invalid input, unavailable resources, lifetime/cleanup, type constraints, or concurrency timing where applicable. A successful happy path is not enough to prove the construct is used correctly.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Pipeline operator Mastery Check →
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Partial application
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Composition operator