26 lines
517 B
Rust
26 lines
517 B
Rust
|
// Interior vector utility functions.
|
||
|
|
|
||
|
|
import option::none;
|
||
|
|
import option::some;
|
||
|
|
|
||
|
|
type operator2[T,U,V] = fn(&T, &U) -> V;
|
||
|
|
|
||
|
|
native "rust-intrinsic" mod rusti {
|
||
|
|
fn ivec_len[T](&T[] v) -> uint;
|
||
|
|
}
|
||
|
|
|
||
|
|
native "rust" mod rustrt {
|
||
|
|
fn ivec_reserve[T](&mutable T[] v, uint n);
|
||
|
|
fn ivec_on_heap[T](&T[] v) -> bool;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// Reserves space for `n` elements in the given vector.
|
||
|
|
fn reserve[T](&mutable T[] v, uint n) {
|
||
|
|
rustrt::ivec_reserve(v, n);
|
||
|
|
}
|
||
|
|
|
||
|
|
fn on_heap[T](&T[] v) -> bool {
|
||
|
|
ret rustrt::ivec_on_heap(v);
|
||
|
|
}
|
||
|
|
|