bjoernager/rust
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Handle fallout for vector addition

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Adding two vectors now results in a Vec<T> instead of a ~[T].

Implement Add on Vec<T>.
This commit is contained in:
Kevin Ballard 2014-05-03 23:09:45 -07:00
parent cc42b61936
commit 2a0dac6f58
4 changed files with 38 additions and 20 deletions
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12
src/libstd/vec.rs
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@ -22,7 +22,7 @@ use mem::{size_of, move_val_init};
use mem;
use num;
use num::{CheckedMul, CheckedAdd};
use ops::Drop;
use ops::{Add, Drop};
use option::{None, Option, Some, Expect};
use ptr::RawPtr;
use ptr;
@ -1370,6 +1370,16 @@ impl<T> Vector<T> for Vec<T> {
}
}
impl<T: Clone, V: Vector<T>> Add<V, Vec<T>> for Vec<T> {
#[inline]
fn add(&self, rhs: &V) -> Vec<T> {
let mut res = Vec::with_capacity(self.len() + rhs.as_slice().len());
res.push_all(self.as_slice());
res.push_all(rhs.as_slice());
res
}
}
#[unsafe_destructor]
impl<T> Drop for Vec<T> {
fn drop(&mut self) {