2 #![deny(clippy::bind_instead_of_map)]
3 #![allow(clippy::uninlined_format_args)]
5 // need a main anyway, use it get rid of unused warnings too
9 let _ = x.and_then(Some);
10 let _ = x.and_then(|o| Some(o + 1));
11 // and an easy counter-example
12 let _ = x.and_then(|o| if o < 32 { Some(o) } else { None });
15 let x: Result<u32, &str> = Ok(1);
16 let _ = x.and_then(Ok);
19 pub fn foo() -> Option<String> {
20 let x = Some(String::from("hello"));
21 Some("hello".to_owned()).and_then(|s| Some(format!("{}{}", s, x?)))
24 pub fn example2(x: bool) -> Option<&'static str> {
25 Some("a").and_then(|s| Some(if x { s } else { return None }))