[rustc.git] / src / tools / clippy / tests / ui / bind_instead_of_map.rs

// run-rustfix
#![deny(clippy::bind_instead_of_map)]

// need a main anyway, use it get rid of unused warnings too
pub fn main() {
    let x = Some(5);
    // the easiest cases
    let _ = x.and_then(Some);
    let _ = x.and_then(|o| Some(o + 1));
    // and an easy counter-example
    let _ = x.and_then(|o| if o < 32 { Some(o) } else { None });

    // Different type
    let x: Result<u32, &str> = Ok(1);
    let _ = x.and_then(Ok);
}

pub fn foo() -> Option<String> {
    let x = Some(String::from("hello"));
    Some("hello".to_owned()).and_then(|s| Some(format!("{}{}", s, x?)))
}

pub fn example2(x: bool) -> Option<&'static str> {
    Some("a").and_then(|s| Some(if x { s } else { return None }))
}
Commit	Line	Data
f20569fa XL	1	// run-rustfix
	2	#![deny(clippy::bind_instead_of_map)]
	3
	4	// need a main anyway, use it get rid of unused warnings too
	5	pub fn main() {
	6	let x = Some(5);
	7	// the easiest cases
	8	let _ = x.and_then(Some);
	9	let _ = x.and_then(\|o\| Some(o + 1));
	10	// and an easy counter-example
	11	let _ = x.and_then(\|o\| if o < 32 { Some(o) } else { None });
	12
	13	// Different type
	14	let x: Result<u32, &str> = Ok(1);
	15	let _ = x.and_then(Ok);
	16	}
	17
	18	pub fn foo() -> Option<String> {
	19	let x = Some(String::from("hello"));
	20	Some("hello".to_owned()).and_then(\|s\| Some(format!("{}{}", s, x?)))
	21	}
	22
	23	pub fn example2(x: bool) -> Option<&'static str> {
	24	Some("a").and_then(\|s\| Some(if x { s } else { return None }))
	25	}