Vec::remove

pub fn remove(int i) -> Option<T>

Removes the element at index i and returns it, shifting later elements left.

Returns None (and leaves the vector unchanged) when i is out of range.

Called on a Vec value as value.remove(…).

Parameters#

Returns#

Option<T>

Examples#

use tests::assert;
let v: Vec<int> = [10, 20, 30];
assert!((v.remove(0) ?? 0) == 10);
assert!(v[0] == 20);
assert!((v.remove(9) ?? -1) == -1);

See also#

• Vec: A growable, heap-allocated vector of T values.
• Vec::new: Creates a new, empty vector.
• Vec::with_capacity: Creates an empty vector with room for at least n elements.
• Vec::from: Creates a vector holding a copy of the elements of the fixed array arr.
• Vec::push: Appends x to the end of the vector.
• Vec::pop: Removes the last element and returns it, or None when the vector is empty.
• Vec::insert: Inserts x at index i, shifting later elements one place to the right.
• Vec::clear: Removes every element.