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error[E0059]: type parameter to bare `Fn` trait must be a tuple
--> $DIR/E0059.rs:3:11
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LL | fn foo<F: Fn<i32>>(f: F) -> F::Output { f(3) }
| ^^^^^^^ the trait `Tuple` is not implemented for `i32`
|
note: required by a bound in `Fn`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
error[E0277]: `i32` is not a tuple
--> $DIR/E0059.rs:3:41
|
LL | fn foo<F: Fn<i32>>(f: F) -> F::Output { f(3) }
| ^^^^ the trait `Tuple` is not implemented for `i32`
error[E0059]: cannot use call notation; the first type parameter for the function trait is neither a tuple nor unit
--> $DIR/E0059.rs:3:41
|
LL | fn foo<F: Fn<i32>>(f: F) -> F::Output { f(3) }
| ^^^^
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0059, E0277.
For more information about an error, try `rustc --explain E0059`.
|
