implement TrustedLen for Flatten/FlatMap if the U: IntoIterator == [T; N]#87168

Merged

bors merged 4 commits intorust-lang:masterfrom the8472:flatten-len

Jul 21, 2021

+133-1

Commits on Jul 15, 2021

implement TrustedLen for Flatten/FlatMap if the U: IntoIterator == [T; N]
the8472
committed

Commits on Jul 16, 2021

Commits on Jul 19, 2021

replace Option combinators with try block
the8472
committed