diff options
Diffstat (limited to 'src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime')
4 files changed, 36 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock new file mode 100644 index 000000000..e8007a19b --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "chapter10" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml new file mode 100644 index 000000000..489f80967 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "chapter10" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt new file mode 100644 index 000000000..0c628b697 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt @@ -0,0 +1,10 @@ +$ cargo run + Compiling chapter10 v0.1.0 (file:///projects/chapter10) +error[E0515]: cannot return reference to local variable `result` + --> src/main.rs:11:5 + | +11 | result.as_str() + | ^^^^^^^^^^^^^^^ returns a reference to data owned by the current function + +For more information about this error, try `rustc --explain E0515`. +error: could not compile `chapter10` due to previous error diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs new file mode 100644 index 000000000..aca4be0a7 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs @@ -0,0 +1,14 @@ +fn main() { + let string1 = String::from("abcd"); + let string2 = "xyz"; + + let result = longest(string1.as_str(), string2); + println!("The longest string is {}", result); +} + +// ANCHOR: here +fn longest<'a>(x: &str, y: &str) -> &'a str { + let result = String::from("really long string"); + result.as_str() +} +// ANCHOR_END: here |