diff options
Diffstat (limited to 'src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends')
3 files changed, 25 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.lock b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.lock new file mode 100644 index 000000000..2aa4918e5 --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "ownership" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml new file mode 100644 index 000000000..e8847526d --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "ownership" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs new file mode 100644 index 000000000..861944966 --- /dev/null +++ b/src/doc/book/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs @@ -0,0 +1,13 @@ +fn main() { + // ANCHOR: here + let mut s = String::from("hello"); + + let r1 = &s; // no problem + let r2 = &s; // no problem + println!("{} and {}", r1, r2); + // variables r1 and r2 will not be used after this point + + let r3 = &mut s; // no problem + println!("{}", r3); + // ANCHOR_END: here +} |