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When encountering a fn call that has a path to another fn being passed in, where an `Fn` impl is expected, and the arguments differ, suggest wrapping the argument with a closure with the appropriate arguments.
31 lines
1.3 KiB
Plaintext
31 lines
1.3 KiB
Plaintext
error[E0631]: type mismatch in closure arguments
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--> $DIR/late-bound-in-borrow-closure-sugg.rs:26:24
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LL | let closure = |trader : Trader| {
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| ----------------- found signature defined here
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...
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LL | trader.set_closure(closure);
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| ----------- ^^^^^^^ expected due to this
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| |
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| required by a bound introduced by this call
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= note: expected closure signature `for<'a, 'b> fn(&'a mut Trader<'b>) -> _`
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found closure signature `for<'a> fn(Trader<'a>) -> _`
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note: required by a bound in `Trader::<'a>::set_closure`
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--> $DIR/late-bound-in-borrow-closure-sugg.rs:15:50
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LL | pub fn set_closure(&mut self, function: impl Fn(&mut Trader) + 'a) {
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| ^^^^^^^^^^^^^^^ required by this bound in `Trader::<'a>::set_closure`
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help: consider wrapping the function in a closure
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LL | trader.set_closure(|arg0: &mut Trader<'_>| closure(*arg0));
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| +++++++++++++++++++++++ +++++++
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help: consider adjusting the signature so it borrows its argument
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LL | let closure = |trader : &mut Trader| {
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| ++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0631`.
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