1.0.0[−][src]Module alloc::vec
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).
Examples
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;
Structs
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 |