flatMap

flatMap(array, fn) → array · Array

Map each element to an array, then flatten one level. Equivalent to flatten(map(...)). Use when each element produces multiple results.

• array (required): the array to process

• fn (required): lambda (element) -> array

echo '{"orders": [{"lines": [1,2]}, {"lines": [3]}]}' \
  | utlx -e 'flatMap(.orders, (o) -> o.lines)'
# [1, 2, 3]

{
  allLines: flatMap($input.orders, (o) -> o.lines)
}