blob: 7bcd6c0cbf379fe8a0b09bd6b7d0930001ffb389 (
plain)
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
|
#### Note: this error code is no longer emitted by the compiler.
A `while let` pattern attempts to match the pattern, and enters the body if the
match was successful. If the match is irrefutable (when it cannot fail to
match), use a regular `let`-binding inside a `loop` instead. For instance:
```no_run
struct Irrefutable(i32);
let irr = Irrefutable(0);
// This fails to compile because the match is irrefutable.
while let Irrefutable(x) = irr {
// ...
}
```
Try this instead:
```no_run
struct Irrefutable(i32);
let irr = Irrefutable(0);
loop {
let Irrefutable(x) = irr;
// ...
}
```
|
