Module collections::vec
[−]
[src]
A growable list type with heap-allocated contents, written Vec<T>`Vec
Vectors have O(1)`O(1)` indexing, push (to the end) and pop (from the end).
Examples
You can explicitly create a Vec<T>`Vecwith` with new()`new()`:
let v: Vec<i32> = Vec::new();
...or by using the vec!`vec!` macro:
let v: Vec<i32> = vec![]; let v = vec![1, 2, 3, 4, 5]; let v = vec![0; 10]; // ten zeroes
You can push`push` values onto the end of a vector (which will grow the vector as needed):
let mut v = vec![1, 2]; v.push(3);
Popping values works in much the same way:
fn main() { let mut v = vec![1, 2]; let two = v.pop(); }let mut v = vec![1, 2]; let two = v.pop();
Vectors also support indexing (through the Index`Indexand` and IndexMut`IndexMut` traits):
let mut v = vec![1, 2, 3]; let three = v[2]; v[1] = v[1] + 5;
Structs
| IntoIter |
An iterator that moves out of a vector. |
| Vec |
A growable list type, written |
| DerefVec |
[Unstable] Wrapper type providing a |
| Drain |
[Unstable] A draining iterator for |
Functions
| as_vec |
[Unstable] Converts a slice to a wrapper type providing a |