error: called `filter(p).map(q)` on an `Iterator`. This is more succinctly expressed by calling `.filter_map(..)` instead.
--> $DIR/filter_methods.rs:8:21
|
8 | let _: Vec<_> = vec![5; 6].into_iter()
| _____________________^
9 | | .filter(|&x| x == 0)
10 | | .map(|x| x * 2)
| |_____________________________________________^
|
= note: `-D filter-map` implied by `-D warnings`
error: called `filter(p).flat_map(q)` on an `Iterator`. This is more succinctly expressed by calling `.flat_map(..)` and filtering by returning an empty Iterator.
--> $DIR/filter_methods.rs:13:21
|
13 | let _: Vec<_> = vec![5_i8; 6].into_iter()
| _____________________^
14 | | .filter(|&x| x == 0)
15 | | .flat_map(|x| x.checked_mul(2))
| |_______________________________________________________________^
error: called `filter_map(p).flat_map(q)` on an `Iterator`. This is more succinctly expressed by calling `.flat_map(..)` and filtering by returning an empty Iterator.
--> $DIR/filter_methods.rs:18:21
|
18 | let _: Vec<_> = vec![5_i8; 6].into_iter()
| _____________________^
19 | | .filter_map(|x| x.checked_mul(2))
20 | | .flat_map(|x| x.checked_mul(2))
| |_______________________________________________________________^
error: called `filter_map(p).map(q)` on an `Iterator`. This is more succinctly expressed by only calling `.filter_map(..)` instead.
--> $DIR/filter_methods.rs:23:21
|
23 | let _: Vec<_> = vec![5_i8; 6].into_iter()
| _____________________^
24 | | .filter_map(|x| x.checked_mul(2))
25 | | .map(|x| x.checked_mul(2))
| |__________________________________________________________^
error: aborting due to 4 previous errors