Type Alias EdgeIter 

pub type EdgeIter<'a> = Map<Zip<Iter<'a, VertexId>, Iter<'a, VertexId>>, fn((&'a VertexId, &'a VertexId)) -> (VertexId, VertexId)>;

Iterator over graph edges as (from, to) pairs.

Aliased Type

pub struct EdgeIter<'a> { /* private fields */ }