36 lines
682 B
Rust
36 lines
682 B
Rust
#![warn(clippy::unwrap_used, clippy::expect_used)]
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trait OptionExt {
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type Item;
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fn unwrap_err(self) -> Self::Item;
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fn expect_err(self, msg: &str) -> Self::Item;
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}
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impl<T> OptionExt for Option<T> {
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type Item = T;
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fn unwrap_err(self) -> T {
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panic!();
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}
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fn expect_err(self, msg: &str) -> T {
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panic!();
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}
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}
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fn main() {
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Some(3).unwrap();
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Some(3).expect("Hello world!");
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// Don't trigger on unwrap_err on an option
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Some(3).unwrap_err();
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Some(3).expect_err("Hellow none!");
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let a: Result<i32, i32> = Ok(3);
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a.unwrap();
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a.expect("Hello world!");
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a.unwrap_err();
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a.expect_err("Hello error!");
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}
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