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When encountering a typo in a pattern that gets interpreted as an unused binding, look for unit struct/variant of the same type as the binding:
```
error: unused variable: `Non`
--> $DIR/binding-typo-2.rs:36:9
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LL | Non => {}
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help: if this is intentional, prefix it with an underscore
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LL | _Non => {}
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help: you might have meant to pattern match on the similarly named variant `None`
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LL - Non => {}
LL + std::prelude::v1::None => {}
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```
32 lines
969 B
Plaintext
32 lines
969 B
Plaintext
error[E0408]: variable `Ban` is not bound in all patterns
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--> $DIR/binding-typo.rs:12:9
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LL | (Foo, Bar) | (Ban, Foo) => {}
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| ^^^^^^^^^^ --- variable not in all patterns
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| pattern doesn't bind `Ban`
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help: you might have meant to use the similarly named previously used binding `Bar`
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LL - (Foo, Bar) | (Ban, Foo) => {}
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LL + (Foo, Bar) | (Bar, Foo) => {}
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error[E0408]: variable `Ban` is not bound in all patterns
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--> $DIR/binding-typo.rs:20:9
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LL | (Foo, _) | (Ban, Foo) => {}
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| ^^^^^^^^ --- variable not in all patterns
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| pattern doesn't bind `Ban`
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help: you might have meant to use the similarly named unit variant `Bar`
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LL - (Foo, _) | (Ban, Foo) => {}
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LL + (Foo, _) | (Bar, Foo) => {}
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0408`.
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