Create a flattened copy of an array.This function is valid in v2.1.0 to v2.22.1. This function has been downloaded 25 times.
Infinitythere will be no limit to the recursiveness of the flattening. Otherwise, if given, this should be a number indicated how many levels down this array should be flattened.
arrayup to the given
This function directly requires the following function which is included automatically: