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Syntax & Values
Int and Float values String and Char values Booleans Tuples Records Record update syntax Lists Function application Pipeline operator |> Function composition >>
Functions & Local Logic
Named functions Anonymous functions let expressions if expressions case expressions Pattern matching tuples Pattern matching records Guards with if inside branches Partial application Recursive functions
Custom Types
type alias Custom union types Constructors with payloads Maybe Result Nested pattern matching Wildcard patterns as patterns Recursive custom types Opaque module types
Lists & Collections
List.map List.filter List.foldl List.foldr List.concatMap List.head List.range List.sortBy Dict.insert and get Set operations
JSON & Data Conversion
Json.Decode.string Json.Decode.field Json.Decode.map2 Json.Decode.list Json.Decode.oneOf Json.Decode.nullable Json.Encode.object Json.Encode.list String.toInt String.fromInt
Elm Architecture
Model Msg init update view Cmd.none Cmd.map Sub.none subscriptions Browser.sandbox
HTML & Events
Html.text Html.div Html.button Html.input Html.Attributes.class Html.Attributes.value Html.Events.onClick Html.Events.onInput Form state Conditional rendering
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Browser.element Browser.document Browser.application Http.get Http.expectJson Time.every Random.generate Url.fromString Navigation.pushUrl Ports
Elm Complete Course / Syntax & Values

Records

Learn Records in Elm with a construct-specific explanation, a unique example, a practical boundary, and a mastery check.

10 min read • Beginner

Records is an atomic Elm topic inside Syntax & Values. The example below uses the actual construct named by the lesson rather than a generic placeholder.

Focus on what Records changes: the input, binding, control path, object state, collection, runtime effect, or language contract. Then alter one value and verify that the behavior changes for a reason specific to this feature.

Topic-specific example

elm-01-05-records.elm
elm Try It Live 
customer = { name = "Mira", points = 42 }
Edge case / engineering note

Pay attention to the contract exposed by the type, which members belong to instances versus the type itself, and what dispatch occurs at runtime.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Records Mastery Check →
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Record update syntax