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|
error[E0308]: mismatched types
--> $DIR/option-ref-advice.rs:6:18
|
LL | takes_option(&None);
| ------------ ^^^^^ expected `Option<&String>`, found `&Option<_>`
| |
| arguments to this function are incorrect
|
= note: expected enum `Option<&String>`
found reference `&Option<_>`
note: function defined here
--> $DIR/option-ref-advice.rs:3:4
|
LL | fn takes_option(_arg: Option<&String>) {}
| ^^^^^^^^^^^^ ---------------------
help: consider removing the borrow
|
LL - takes_option(&None);
LL + takes_option(None);
|
error[E0308]: mismatched types
--> $DIR/option-ref-advice.rs:10:18
|
LL | takes_option(&res);
| ------------ ^^^^ expected `Option<&String>`, found `&Option<String>`
| |
| arguments to this function are incorrect
|
= note: expected enum `Option<&String>`
found reference `&Option<String>`
note: function defined here
--> $DIR/option-ref-advice.rs:3:4
|
LL | fn takes_option(_arg: Option<&String>) {}
| ^^^^^^^^^^^^ ---------------------
help: try using `.as_ref()` to convert `&Option<String>` to `Option<&String>`
|
LL - takes_option(&res);
LL + takes_option(res.as_ref());
|
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.
|
