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).
collection
iteratee
The collection to iterate over.
Optional
The function invoked per iteration.
Returns the new flattened array.
5.4.0
[[flatMapDeep]],[[flatMapDepth]],[[flatten]],[[flattenDeep]],[[flattenDepth]],[[map]],[[mapKeys]],[[mapValues]]
function duplicate(n) { return [n, n]}flatMap([1, 2], duplicate)// => [1, 1, 2, 2] Copy
function duplicate(n) { return [n, n]}flatMap([1, 2], duplicate)// => [1, 1, 2, 2]
Creates a flattened array of values by running each element in
collectionthruiterateeand flattening the mapped results. The iteratee is invoked with three arguments: (value, index|key, collection).