1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
### What it does
Checks for `match vec[idx]` or `match vec[n..m]`.
### Why is this bad?
This can panic at runtime.
### Example
```
let arr = vec![0, 1, 2, 3];
let idx = 1;
match arr[idx] {
0 => println!("{}", 0),
1 => println!("{}", 3),
_ => {},
}
```
Use instead:
```
let arr = vec![0, 1, 2, 3];
let idx = 1;
match arr.get(idx) {
Some(0) => println!("{}", 0),
Some(1) => println!("{}", 3),
_ => {},
}
```
|
