Function flatMap

Creates a flattened array of values by running each element in collection thru iteratee and flattening the mapped results. The iteratee is invoked with three arguments: (value, index|key, collection).

Since

5.4.0

See

[[flatMapDeep]],[[flatMapDepth]],[[flatten]],[[flattenDeep]],[[flattenDepth]],[[map]],[[mapKeys]],[[mapValues]]

Example

function duplicate(n) {
  return [n, n]
}

flatMap([1, 2], duplicate)
// => [1, 1, 2, 2]
Copy