[swift-evolution] [SR-933] Rename flatten to flattened

[David Waite]

> On Apr 8, 2016, at 4:19 AM, Haravikk via swift-evolution <swift-evolution at swift.org> wrote:

>  If we want mutating forms of this methods then I much prefer .map() and .mapped() to .map() and .mapInPlace() or whatever, as the latter contradicts the naming convention used everywhere else which only adds confusion.


Strong -1 to recycling the meaning of 'map' or any of the others to be the mutating versions. That would make 'map' fundamentally different and even counter to the term of art

-DW