Esteban Küber c1bfd46c7b When expecting closure argument but finding block provide suggestion ... Detect if there is a potential typo where the `{` meant to open the closure body was written before the body. ``` error[E0277]: expected a `FnOnce<({integer},)>` closure, found `Option<usize>` --> $DIR/ruby_style_closure_successful_parse.rs:3:31 | LL | let p = Some(45).and_then({|x| | ______________________--------_^ | | | | | required by a bound introduced by this call LL | | 1 + 1; LL | | Some(x * 2) | | ----------- this tail expression is of type `Option<usize>` LL | | }); | |_____^ expected an `FnOnce<({integer},)>` closure, found `Option<usize>` | = help: the trait `FnOnce<({integer},)>` is not implemented for `Option<usize>` note: required by a bound in `Option::<T>::and_then` --> $SRC_DIR/core/src/option.rs:LL:COL help: you might have meant to open the closure body instead of placing a closure within a block | LL - let p = Some(45).and_then({|x| LL + let p = Some(45).and_then(|x| { | ``` Detect the potential typo where the closure header is missing. ``` error[E0277]: expected a `FnOnce<(&bool,)>` closure, found `bool` --> $DIR/block_instead_of_closure_in_arg.rs:3:23 | LL | Some(true).filter({ | _________________------_^ | | | | | required by a bound introduced by this call LL | |/ if number % 2 == 0 { LL | || number == 0 LL | || } else { LL | || number != 0 LL | || } | ||_________- this tail expression is of type `bool` LL | | }); | |______^ expected an `FnOnce<(&bool,)>` closure, found `bool` | = help: the trait `for<'a> FnOnce<(&'a bool,)>` is not implemented for `bool` note: required by a bound in `Option::<T>::filter` --> $SRC_DIR/core/src/option.rs:LL:COL help: you might have meant to create the closure instead of a block | LL | Some(true).filter(|_| { | +++ ``` Partially address #27300.		2023-10-23 20:41:15 +00:00
..
compound-assignment	Move /src/test to /tests	2023-01-11 09:32:08 +00:00
if	Address review comments	2023-09-13 15:00:31 +00:00
malformed_closure	When expecting closure argument but finding block provide suggestion	2023-10-23 20:41:15 +00:00
if-bot.rs	Move /src/test to /tests	2023-01-11 09:32:08 +00:00