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if let
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refutable binding
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src/test/ui/feature-gates/feature-gate-exhaustive-patterns.nll.stderr
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Original file line number | Diff line number | Diff line change |
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error[E0005]: refutable pattern in local binding: `Err(_)` not covered | ||
--> $DIR/feature-gate-exhaustive-patterns.rs:7:9 | ||
| | ||
LL | let Ok(_x) = foo(); | ||
| ^^^^^^ pattern `Err(_)` not covered | ||
| | ||
= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant | ||
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html | ||
help: you might want to use `if let` to ignore the variant that isn't matched | ||
| | ||
LL | if let Ok(_x) = foo() { /* */ } | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
|
||
error: aborting due to previous error | ||
|
||
For more information about this error, try `rustc --explain E0005`. |
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