diff options
Diffstat (limited to 'src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly')
4 files changed, 42 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock new file mode 100644 index 000000000..f62e8ac45 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "enums" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml new file mode 100644 index 000000000..e959295f9 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "enums" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt new file mode 100644 index 000000000..d4a040e8e --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt @@ -0,0 +1,22 @@ +$ cargo run + Compiling enums v0.1.0 (file:///projects/enums) +error[E0277]: cannot add `Option<i8>` to `i8` + --> src/main.rs:5:17 + | +5 | let sum = x + y; + | ^ no implementation for `i8 + Option<i8>` + | + = help: the trait `Add<Option<i8>>` is not implemented for `i8` + = help: the following other types implement trait `Add<Rhs>`: + <&'a f32 as Add<f32>> + <&'a f64 as Add<f64>> + <&'a i128 as Add<i128>> + <&'a i16 as Add<i16>> + <&'a i32 as Add<i32>> + <&'a i64 as Add<i64>> + <&'a i8 as Add<i8>> + <&'a isize as Add<isize>> + and 48 others + +For more information about this error, try `rustc --explain E0277`. +error: could not compile `enums` due to previous error diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs new file mode 100644 index 000000000..ec65565d4 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/src/main.rs @@ -0,0 +1,8 @@ +fn main() { + // ANCHOR: here + let x: i8 = 5; + let y: Option<i8> = Some(5); + + let sum = x + y; + // ANCHOR_END: here +} |