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These are both obsoleted by the forthcoming new GC.
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Change all users of old-style for with internal iterators to using
`do`-loops.
The code in stackwalk.rs does not actually implement the
looping protocol (no break on return false).
The code in gc.rs does not use loop breaks, nor does any code using it.
We remove the capacity to break from the loops in std::gc and implement
the walks using `do { .. }` expressions.
No behavior change.
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Closes #8118, #7136
~~~rust
extern mod extra;
use std::vec;
use std::ptr;
fn bench_from_elem(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = vec::from_elem(1024, 0u8);
}
}
fn bench_set_memory(b: &mut extra::test::BenchHarness) {
do b.iter {
let mut v: ~[u8] = vec::with_capacity(1024);
unsafe {
let vp = vec::raw::to_mut_ptr(v);
ptr::set_memory(vp, 0, 1024);
vec::raw::set_len(&mut v, 1024);
}
}
}
fn bench_vec_repeat(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = ~[0u8, ..1024];
}
}
~~~
Before:
test bench_from_elem ... bench: 415 ns/iter (+/- 17)
test bench_set_memory ... bench: 85 ns/iter (+/- 4)
test bench_vec_repeat ... bench: 83 ns/iter (+/- 3)
After:
test bench_from_elem ... bench: 84 ns/iter (+/- 2)
test bench_set_memory ... bench: 84 ns/iter (+/- 5)
test bench_vec_repeat ... bench: 84 ns/iter (+/- 3)
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Place `pub` or `priv` on individual items instead.
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Fixes most of #4989. I didn't add Persistent{Set,Map} since the only
persistent data structure is fun_treemap and its functionality is
currently too limited to build a trait out of.
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To remove the environment pointer, support for function pointers without
an environment argument is needed (i.e. a fixed version of #6661).
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Towards #4812. Also includes some minor cleanups.
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This only changes the directory names; it does not change the "real"
metadata names.
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