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If they are on the trait then it is extremely annoying to use them as
generic parameters to a function, e.g. with the iterator param on the trait
itself, if one was to pass an Extendable<int> to a function that filled it
either from a Range or a Map<VecIterator>, one needs to write something
like:
fn foo<E: Extendable<int, Range<int>> +
Extendable<int, Map<&'self int, int, VecIterator<int>>>
(e: &mut E, ...) { ... }
since using a generic, i.e. `foo<E: Extendable<int, I>, I: Iterator<int>>`
means that `foo` takes 2 type parameters, and the caller has to specify them
(which doesn't work anyway, as they'll mismatch with the iterators used in
`foo` itself).
This patch changes it to:
fn foo<E: Extendable<int>>(e: &mut E, ...) { ... }
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cc #5898
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this has been replaced by `for`
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A couple of implementations of Container::is_empty weren't exactly
self.len() == 0 so I left them alone (e.g. Treemap).
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Add size_hint() to the Iterators in libextra and the Iterator in
libsyntax.
Skip deque for the moment, as it's being worked on elsewhere.
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Remove PriorityQueue::each and replace it with PriorityQueue::iter,
which ultimately calls into vec::VecIterator via PriorityQueueIterator.
Implement iterator::Iterator for PriorityQueueIterator. Now you should
be able to do:
extern mod extra;
let mut pq = extra::priority_queue::PriorityQueue::new();
pq.push(5);
pq.push(6);
pq.push(3);
for pq.iter().advance |el| {
println(fmt!("%d", *el));
}
just like you iterate over vectors, hashmaps, hashsets etc. Note that
the iteration order is arbitrary (as before with PriorityQueue::each),
and _not_ the order you get when you pop() repeatedly.
Add an in-file test to guard this.
Reported-by: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
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the `test/run-pass/class-trait-bounded-param.rs` test was xfailed and
written in an ancient dialect of Rust so I've just removed it
this also removes `to_vec` from DList because it's provided by
`std::iter::to_vec`
an Iterator implementation is added for OptVec but some transitional
internal iterator methods are still left
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I removed the `static-method-test.rs` test because it was heavily based
on `BaseIter` and there are plenty of other more complex uses of static
methods anyway.
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to libextra
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This only changes the directory names; it does not change the "real"
metadata names.
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