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Diffstat (limited to 'src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt')
| -rw-r--r-- | src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt new file mode 100644 index 000000000..72274d07c --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt @@ -0,0 +1,19 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) +error[E0005]: refutable pattern in local binding: `None` not covered + --> src/main.rs:3:9 + | +3 | let Some(x) = some_option_value; + | ^^^^^^^ pattern `None` 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 +note: `Option<i32>` defined here + = note: the matched value is of type `Option<i32>` +help: you might want to use `if let` to ignore the variant that isn't matched + | +3 | let x = if let Some(x) = some_option_value { x } else { todo!() }; + | ++++++++++ ++++++++++++++++++++++ + +For more information about this error, try `rustc --explain E0005`. +error: could not compile `patterns` due to previous error |