Type Alias DuplicatesBy 

pub type DuplicatesBy<I, V, F, S = RandomState> = DuplicatesBy<I, V, ByFn<F>, S>;

An iterator adapter to filter for duplicate elements.

See .duplicates_by() for more information.

Aliased Type

pub struct DuplicatesBy<I, V, F, S = RandomState> { /* private fields */ }