Found manual implementation of vec.first() RS-W1116
Anti-pattern
Minor
The Vec type provides the first() and first_mut() methods to retrieve
the first element of the vector. Similarly, the VecDeque type provides the
front() and front_mut() methods.
Prefer using these instead of get(0) and get_mut(0).
Bad practice
fn foo() {
let v = vec![1, 2, 3, 4];
let v_first = v.get(0);
let dq = VecDeque::from([1, 2, 3, 4]);
let dq_first_mut = dq.get_mut(0);
}
Recommended
fn foo() {
let v = vec![1, 2, 3, 4];
let v_first = v.first();
let dq = VecDeque::from([1, 2, 3, 4]);
let dq_first_mut = dq.front_mut();
}