partition

partition(array, predicate) → \[matching, nonMatching\] · Array

Split an array into two: elements that match the predicate, and elements that don't. Returns a 2-element array of arrays.

• array (required): the array to partition

• predicate (required): lambda (element) -> boolean

echo '{"orders": [{"id": 1, "amount": 500}, {"id": 2, "amount": 1500}, {"id": 3, "amount": 200}]}' | utlx -e 'partition($input.orders, (o) -> o.amount > 1000)'
# [[{"id": 2, "amount": 1500}], [{"id": 1, "amount": 500}, {"id": 3, "amount": 200}]]

let validated = partition($input.records, (r) -> r.email != null && r.name != null)
{
  valid: validated[0],
  invalid: validated[1],
  validCount: count(validated[0]),
  invalidCount: count(validated[1])
}