@reduce

Reduce an array to a single value by applying a helper.

Returns: any

Syntax

@reduce(arr fn initial)

Arguments

Name	Type	Description
arr	array	Source array
fn	helper	Reducer helper receiving (accumulator, element)
initial	any	Initial accumulator value

Examples

# Sum an array
def @add "$acc: number $n: number -> number" @num($acc + $n)
set $nums [1 2 3 4]
set $sum @reduce($nums @add 0)

See Also

• @map — transform each element
• @filter — keep elements by predicate