rust/tests/ui/traits/resolution-in-overloaded-op.stderr

error[E0369]: cannot multiply `&T` by `f64`
  --> $DIR/resolution-in-overloaded-op.rs:8:7
   |
LL |     a * b
   |     - ^ - f64
   |     |
   |     &T
   |
help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
   |
LL | fn foo<T: MyMul<f64, f64>>(a: &T, b: f64) -> f64 where &T: Mul<f64, Output = f64> {
   |                                                  ++++++++++++++++++++++++++++++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0369`.
Improve wording of "cannot multiply" type error For example, if you had this code: fn foo(x: i32, y: f32) -> f32 { x * y } You would get this error: error[E0277]: cannot multiply `f32` to `i32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` However, that's not usually how people describe multiplication. People usually describe multiplication like how the division error words it: error[E0277]: cannot divide `i32` by `f32` --> src/lib.rs:2:7 \| 2 \| x / y \| ^ no implementation for `i32 / f32` \| = help: the trait `Div<f32>` is not implemented for `i32` So that's what this change does. It changes this: error[E0277]: cannot multiply `f32` to `i32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` To this: error[E0277]: cannot multiply `i32` by `f32` --> src/lib.rs:2:7 \| 2 \| x * y \| ^ no implementation for `i32 * f32` \| = help: the trait `Mul<f32>` is not implemented for `i32` 2020-10-18 02:59:51 +00:00			error[E0369]: cannot multiply `&T` by `f64`
Organize trait test files 2021-02-08 22:15:45 +00:00			`--> $DIR/resolution-in-overloaded-op.rs:8:7`
Moved compile-fail tests to ui tests. 2018-08-08 12:28:26 +00:00			`\|`
Update tests 2019-03-09 12:03:44 +00:00			`LL \| a * b`
Better diagnostic for binary operation on BoxedValues 2019-03-27 17:13:09 +00:00			`\| - ^ - f64`
			`\| \|`
			`\| &T`
Tweak binop errors * Suggest potentially missing binop trait bound (fix #73416) * Use structured suggestion for dereference in binop 2020-06-24 00:32:06 +00:00			`\|`
Handle empty where-clause better 2022-06-06 00:37:45 +00:00			help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
Tweak binop errors * Suggest potentially missing binop trait bound (fix #73416) * Use structured suggestion for dereference in binop 2020-06-24 00:32:06 +00:00			`\|`
Adjust spacing in suggestion, add a test 2022-09-04 22:38:12 +00:00			`LL \| fn foo<T: MyMul<f64, f64>>(a: &T, b: f64) -> f64 where &T: Mul<f64, Output = f64> {`
			`\| ++++++++++++++++++++++++++++++++`
Moved compile-fail tests to ui tests. 2018-08-08 12:28:26 +00:00
			`error: aborting due to previous error`

			For more information about this error, try `rustc --explain E0369`.