error: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)` --> $DIR/bind_instead_of_map_multipart.rs:5:13 | LL | let _ = Some("42").and_then(|s| if s.len() < 42 { Some(0) } else { Some(s.len()) }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: the lint level is defined here --> $DIR/bind_instead_of_map_multipart.rs:1:9 | LL | #![deny(clippy::bind_instead_of_map)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try | LL | let _ = Some("42").map(|s| if s.len() < 42 { 0 } else { s.len() }); | ~~~ ~ ~~~~~~~ error: using `Result.and_then(|x| Ok(y))`, which is more succinctly expressed as `map(|x| y)` --> $DIR/bind_instead_of_map_multipart.rs:8:13 | LL | let _ = Ok::<_, ()>("42").and_then(|s| if s.len() < 42 { Ok(0) } else { Ok(s.len()) }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: try | LL | let _ = Ok::<_, ()>("42").map(|s| if s.len() < 42 { 0 } else { s.len() }); | ~~~ ~ ~~~~~~~ error: using `Result.or_else(|x| Err(y))`, which is more succinctly expressed as `map_err(|x| y)` --> $DIR/bind_instead_of_map_multipart.rs:11:13 | LL | let _ = Err::<(), _>("42").or_else(|s| if s.len() < 42 { Err(s.len() + 20) } else { Err(s.len()) }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: try | LL | let _ = Err::<(), _>("42").map_err(|s| if s.len() < 42 { s.len() + 20 } else { s.len() }); | ~~~~~~~ ~~~~~~~~~~~~ ~~~~~~~ error: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)` --> $DIR/bind_instead_of_map_multipart.rs:19:5 | LL | / Some("42").and_then(|s| { LL | | if { LL | | if s == "43" { LL | | return Some(43); ... | LL | | } LL | | }); | |______^ | help: try | LL ~ Some("42").map(|s| { LL | if { LL | if s == "43" { LL ~ return 43; LL | } LL | s == "42" LL | } { LL ~ return 45; LL | } LL | match s.len() { LL ~ 10 => 2, LL | 20 => { ... LL | if foo() { LL ~ return 20; LL | } LL | println!("foo"); LL ~ 3 LL | }; LL | } LL ~ 20 LL | }, LL ~ 40 => 30, LL ~ _ => 1, | error: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)` --> $DIR/bind_instead_of_map_multipart.rs:60:13 | LL | let _ = Some("").and_then(|s| if s.len() == 20 { Some(m!()) } else { Some(Some(20)) }); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | help: try | LL | let _ = Some("").map(|s| if s.len() == 20 { m!() } else { Some(20) }); | ~~~ ~~~~ ~~~~~~~~ error: aborting due to 5 previous errors