#root::data::Iterator
Flatten root/data/Iterator.vi:288
struct Flatten[I, J](...);
impl
impl [I, J; Fork[I], Fork[J]]: Fork[Flatten[I, J]]; impl [I, J; Drop[I], Drop[J]]: Drop[Flatten[I, J]]; impl [I, J; Fork[I], Fork[J]]: Fork[Flatten[I, J]]; impl [I, J; Drop[I], Drop[J]]: Drop[Flatten[I, J]]; impl [I, J, T; Iterator[I, J], Iterator[J, T]]: Iterator[Flatten[I, J], T];