e9ede27a5d
These were probably added automatically to avoid code churn. I'd like to get rid of them bit by bit, so here's the first bit
27 lines
741 B
Rust
27 lines
741 B
Rust
#![deny(clippy::bind_instead_of_map)]
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// need a main anyway, use it get rid of unused warnings too
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pub fn main() {
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let x = Some(5);
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// the easiest cases
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let _ = x;
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//~^ bind_instead_of_map
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let _ = x.map(|o| o + 1);
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//~^ bind_instead_of_map
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// and an easy counter-example
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let _ = x.and_then(|o| if o < 32 { Some(o) } else { None });
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// Different type
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let x: Result<u32, &str> = Ok(1);
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let _ = x;
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//~^ bind_instead_of_map
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}
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pub fn foo() -> Option<String> {
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let x = Some(String::from("hello"));
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Some("hello".to_owned()).and_then(|s| Some(format!("{}{}", s, x?)))
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}
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pub fn example2(x: bool) -> Option<&'static str> {
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Some("a").and_then(|s| Some(if x { s } else { return None }))
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}
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