78fc7c351d
Given
```rust
fn main() {
let maybe_vec = Some(vec![1,2,3]);
assert_eq!(maybe_vec.len(), 3);
}
```
suggest unwraping `maybe_vec` to call `.len()` on the `Vec<_>`.
```
error[E0624]: method `len` is private
--> $DIR/enum-method-probe.rs:61:9
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LL | res.len();
| ^^^ private method
--> $SRC_DIR/core/src/option.rs:LL:COL
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= note: private method defined here
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note: the method `len` exists on the type `Vec<{integer}>`
--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
help: consider using `Option::expect` to unwrap the `Vec<{integer}>` value, panicking if the value is an `Option::None`
|
LL | res.expect("REASON").len();
| +++++++++++++++++
```
66 lines
2 KiB
Rust
66 lines
2 KiB
Rust
//@ edition: 2021
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//@ run-rustfix
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#![allow(unused)]
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struct Foo;
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impl Foo {
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fn get(&self) -> u8 {
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42
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}
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}
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fn test_result_in_result() -> Result<(), ()> {
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let res: Result<_, ()> = Ok(Foo);
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res?.get();
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//~^ ERROR no method named `get` found for enum `Result` in the current scope
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//~| HELP use the `?` operator
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Ok(())
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}
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async fn async_test_result_in_result() -> Result<(), ()> {
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let res: Result<_, ()> = Ok(Foo);
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res?.get();
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//~^ ERROR no method named `get` found for enum `Result` in the current scope
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//~| HELP use the `?` operator
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Ok(())
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}
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fn test_result_in_unit_return() {
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let res: Result<_, ()> = Ok(Foo);
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res.expect("REASON").get();
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//~^ ERROR no method named `get` found for enum `Result` in the current scope
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//~| HELP consider using `Result::expect` to unwrap the `Foo` value, panicking if the value is a `Result::Err`
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}
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async fn async_test_result_in_unit_return() {
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let res: Result<_, ()> = Ok(Foo);
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res.expect("REASON").get();
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//~^ ERROR no method named `get` found for enum `Result` in the current scope
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//~| HELP consider using `Result::expect` to unwrap the `Foo` value, panicking if the value is a `Result::Err`
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}
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fn test_option_in_option() -> Option<()> {
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let res: Option<_> = Some(Foo);
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res?.get();
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//~^ ERROR no method named `get` found for enum `Option` in the current scope
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//~| HELP use the `?` operator
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Some(())
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}
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fn test_option_in_unit_return() {
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let res: Option<_> = Some(Foo);
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res.expect("REASON").get();
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//~^ ERROR no method named `get` found for enum `Option` in the current scope
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//~| HELP consider using `Option::expect` to unwrap the `Foo` value, panicking if the value is an `Option::None`
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}
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fn test_option_private_method() {
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let res: Option<_> = Some(vec![1, 2, 3]);
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res.expect("REASON").len();
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//~^ ERROR method `len` is private
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//~| HELP consider using `Option::expect` to unwrap the `Vec<{integer}>` value, panicking if the value is an `Option::None`
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}
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fn main() {}
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