pub struct Filter<'self, A, T> { priv iter: T, priv predicate: &'self fn(&A) -> bool, }
An iterator which filters the elements of iter
with predicate
impl<'self, A, T: Iterator<A>> Iterator<A> for Filter<'self, A, T>
fn next(&mut self) -> Option<A>
Advance the iterator and return the next value. Return None
when the end is reached.
fn size_hint(&self) -> (uint, Option<uint>)
Return a lower bound and upper bound on the remaining length of the iterator.
The common use case for the estimate is pre-allocating space to store the results.
impl<'self, A, T: DoubleEndedIterator<A>> DoubleEndedIterator<A> for Filter<'self, A, T>
fn next_back(&mut self) -> Option<A>
Yield an element from the end of the range, returning None
if the range is empty.
Prefix searches with a type followed by a colon (e.g.
fn:
) to restrict the search to a given type.
Accepted types are: fn
, mod
,
struct
(or str
), enum
,
trait
, typedef
(or
tdef
).