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Diffstat (limited to 'src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt')
| -rw-r--r-- | src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt b/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt new file mode 100644 index 000000000..26e4ff8cc --- /dev/null +++ b/src/doc/book/listings/ch09-error-handling/listing-09-10/output.txt @@ -0,0 +1,15 @@ +$ cargo run + Compiling error-handling v0.1.0 (file:///projects/error-handling) +error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) + --> src/main.rs:4:48 + | +3 | / fn main() { +4 | | let greeting_file = File::open("hello.txt")?; + | | ^ cannot use the `?` operator in a function that returns `()` +5 | | } + | |_- this function should return `Result` or `Option` to accept `?` + | + = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()` + +For more information about this error, try `rustc --explain E0277`. +error: could not compile `error-handling` due to previous error |