label

tuple →
label(
    ...names: text
) → record

Returns a flat record by assigning one positional label to each tuple item and qualifying every field expanded from a record item.

Parameters

Name	Type	Required	Description
names	text	Variadic (zero or more)	One label for each tuple position, in positional order.

Argument evaluation

Visits each position of the tuple supplied as pipeline input to this label call in positional order. A record item contributes its fields in source order, while every other item contributes one field.

• names: Each supplied label is evaluated once in the enclosing context before the tuple positions are visited.

Behavior

The number of labels must equal the tuple arity. A scalar or nested tuple is emitted under its positional label; a record is expanded one level and every field is named <label>.<field>. Nested tuples remain atomic. Tuple positions and source-record fields retain their original order. Empty tuples accept no labels and return an empty record. Only positional label arguments are accepted; spread arguments are not supported. An arity mismatch or duplicate resulting field name raises an evaluation error.

Examples

T(42, {key := 1, value := "Brol"}, "A", {key := 2, score := 10}) | label("id", "left", "grade", "right") → {id := 42, "left.key" := 1, "left.value" := "Brol", grade := "A", "right.key" := 2, "right.score" := 10}
T(T(1, 2), {name := "Alice"}) | label("coordinates", "customer") → {coordinates := T(1, 2), "customer.name" := "Alice"}

Kind: Function
Scope: tuple
Aliases: None