pub struct FilterMap<A, B, I, F> {
// some fields omitted
}An iterator that uses f to both filter and map elements from iter
impl<A, B, I, F> Clone for FilterMap<A, B, I, F>fn clone(&self) -> FilterMap<A, B, I, F>fn clone_from(&mut self, &FilterMap<A, B, I, F>)impl<A, B, I, F> Iterator<B> for FilterMap<A, B, I, F>fn next(&mut self) -> Option<B>fn size_hint(&self) -> (uint, Option<uint>)fn size_hint(&self) -> (uint, Option<uint>)impl<A, B, I, F> DoubleEndedIterator<B> for FilterMap<A, B, I, F>
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