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error[E0107]: missing generics for associated type `Monad::Wrapped`
--> $DIR/issue-79636-1.rs:14:34
|
LL | MInner: Monad<Unwrapped = A, Wrapped = MOuter::Wrapped<A>>,
| ^^^^^^^ expected 1 generic argument
|
note: associated type defined here, with 1 generic parameter: `B`
--> $DIR/issue-79636-1.rs:3:10
|
LL | type Wrapped<B>;
| ^^^^^^^ -
help: add missing generic argument
|
LL | MInner: Monad<Unwrapped = A, Wrapped<B> = MOuter::Wrapped<A>>,
| +++
error[E0277]: the size for values of type `Self` cannot be known at compilation time
--> $DIR/issue-79636-1.rs:5:19
|
LL | fn bind<B, F>(self, f: F) -> Self::Wrapped<B> {
| ^^^^ doesn't have a size known at compile-time
|
= help: unsized fn params are gated as an unstable feature
help: consider further restricting `Self`
|
LL | fn bind<B, F>(self, f: F) -> Self::Wrapped<B> where Self: Sized {
| +++++++++++++++++
help: function arguments must have a statically known size, borrowed types always have a known size
|
LL | fn bind<B, F>(&self, f: F) -> Self::Wrapped<B> {
| +
error[E0277]: the trait bound `Option<Option<bool>>: Monad` is not satisfied
--> $DIR/issue-79636-1.rs:21:21
|
LL | assert_eq!(join(Some(Some(true))), Some(true));
| ---- ^^^^^^^^^^^^^^^^ the trait `Monad` is not implemented for `Option<Option<bool>>`
| |
| required by a bound introduced by this call
|
help: this trait has no implementations, consider adding one
--> $DIR/issue-79636-1.rs:1:1
|
LL | trait Monad {
| ^^^^^^^^^^^
note: required by a bound in `join`
--> $DIR/issue-79636-1.rs:13:13
|
LL | fn join<MOuter, MInner, A>(outer: MOuter) -> MOuter::Wrapped<A>
| ---- required by a bound in this function
LL | where
LL | MOuter: Monad<Unwrapped = MInner>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `join`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0107, E0277.
For more information about an error, try `rustc --explain E0107`.
|
