A contiguous growable array type with heap-allocated contents, written Vec<T>
.
Vectors have O(1)
indexing, amortized O(1)
push (to the end) and O(1)
pop (from the end).
Vectors ensure they never allocate more than isize::MAX
bytes.
You can explicitly create a Vec<T>
with new
:
let v: Vec<i32> = Vec::new();
...or by using the 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
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:
let mut v = vec![1, 2]; let two = v.pop();
Vectors also support indexing (through the Index
and IndexMut
traits):
let mut v = vec![1, 2, 3]; let three = v[2]; v[1] = v[1] + 5;
Drain |
A draining iterator for |
IntoIter |
An iterator that moves out of a vector. |
Splice |
A splicing iterator for |
Vec |
A contiguous growable array type, written |
DrainFilter |
Experimental An iterator produced by calling |
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/vec/index.html