LL | let Ok(x) = res;
| ^^^^^ pattern `Err(_)` not covered
|
- ::: $SRC_DIR/core/src/result.rs:LL:COL
- |
-LL | Err(#[stable(feature = "rust1", since = "1.0.0")] E),
- | --- 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: `Result<u32, &R>` defined here
+ --> $SRC_DIR/core/src/result.rs:LL:COL
+ |
+LL | / pub enum Result<T, E> {
+LL | | /// Contains the success value
+LL | | #[lang = "Ok"]
+LL | | #[stable(feature = "rust1", since = "1.0.0")]
+... |
+LL | | Err(#[stable(feature = "rust1", since = "1.0.0")] E),
+ | | ^^^ not covered
+LL | | }
+ | |_-
= note: the matched value is of type `Result<u32, &R>`
help: you might want to use `if let` to ignore the variant that isn't matched
|
-LL | if let Ok(x) = res { /* */ }
+LL | let x = if let Ok(x) = res { x } else { todo!() };
+ | ++++++++++ ++++++++++++++++++++++
+help: alternatively, on nightly, you might want to use `#![feature(let_else)]` to handle the variant that isn't matched
|
+LL | let Ok(x) = res else { todo!() };
+ | ++++++++++++++++
error: aborting due to previous error