blob: 72274d07c4e6301b4f7a5e1cf314e179a62fa119 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
$ cargo run
Compiling patterns v0.1.0 (file:///projects/patterns)
error[E0005]: refutable pattern in local binding: `None` not covered
--> src/main.rs:3:9
|
3 | let Some(x) = some_option_value;
| ^^^^^^^ pattern `None` not covered
|
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
note: `Option<i32>` defined here
= note: the matched value is of type `Option<i32>`
help: you might want to use `if let` to ignore the variant that isn't matched
|
3 | let x = if let Some(x) = some_option_value { x } else { todo!() };
| ++++++++++ ++++++++++++++++++++++
For more information about this error, try `rustc --explain E0005`.
error: could not compile `patterns` due to previous error
|