25 lines
895 B
Rust
25 lines
895 B
Rust
#![warn(clippy::result_map_or_into_option)]
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fn main() {
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let opt: Result<u32, &str> = Ok(1);
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let _ = opt.map_or(None, Some);
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//~^ ERROR: called `map_or(None, Some)` on a `Result` value
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let _ = opt.map_or_else(|_| None, Some);
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//~^ ERROR: called `map_or_else(|_| None, Some)` on a `Result` value
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#[rustfmt::skip]
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let _ = opt.map_or_else(|_| { None }, Some);
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//~^ ERROR: called `map_or_else(|_| None, Some)` on a `Result` value
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let rewrap = |s: u32| -> Option<u32> { Some(s) };
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// A non-Some `f` arg should not emit the lint
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let opt: Result<u32, &str> = Ok(1);
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let _ = opt.map_or(None, rewrap);
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// A non-Some `f` closure where the argument is not used as the
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// return should not emit the lint
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let opt: Result<u32, &str> = Ok(1);
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_ = opt.map_or(None, |_x| Some(1));
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let _ = opt.map_or_else(|a| a.parse::<u32>().ok(), Some);
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}
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