-error: called `map(..).flatten()` on an `Iterator`. This is more succinctly expressed by calling `.flat_map(..)`
- --> $DIR/map_flatten.rs:14:21
+error: called `map(..).flatten()` on an `Iterator`
+ --> $DIR/map_flatten.rs:18:46
|
-14 | let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using flat_map instead: `vec![5_i8; 6].into_iter().flat_map(|x| 0..x)`
+LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id).flatten().collect();
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id)`
|
= note: `-D clippy::map-flatten` implied by `-D warnings`
-error: aborting due to previous error
+error: called `map(..).flatten()` on an `Iterator`
+ --> $DIR/map_flatten.rs:19:46
+ |
+LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_ref).flatten().collect();
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id_ref)`
+
+error: called `map(..).flatten()` on an `Iterator`
+ --> $DIR/map_flatten.rs:20:46
+ |
+LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(option_id_closure).flatten().collect();
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(option_id_closure)`
+
+error: called `map(..).flatten()` on an `Iterator`
+ --> $DIR/map_flatten.rs:21:46
+ |
+LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| x.checked_add(1)).flatten().collect();
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `filter_map` instead: `.filter_map(|x| x.checked_add(1))`
+
+error: called `map(..).flatten()` on an `Iterator`
+ --> $DIR/map_flatten.rs:24:46
+ |
+LL | let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
+ | ^^^^^^^^^^^^^^^^^^^^^^^^ help: try using `flat_map` instead: `.flat_map(|x| 0..x)`
+
+error: called `map(..).flatten()` on an `Option`
+ --> $DIR/map_flatten.rs:27:39
+ |
+LL | let _: Option<_> = (Some(Some(1))).map(|x| x).flatten();
+ | ^^^^^^^^^^^^^^^^^^^^^ help: try using `and_then` instead: `.and_then(|x| x)`
+
+error: called `map(..).flatten()` on an `Result`
+ --> $DIR/map_flatten.rs:30:41
+ |
+LL | let _: Result<_, &str> = (Ok(Ok(1))).map(|x| x).flatten();
+ | ^^^^^^^^^^^^^^^^^^^^^ help: try using `and_then` instead: `.and_then(|x| x)`
+
+error: aborting due to 7 previous errors