diff options
Diffstat (limited to 'src/doc/book/listings/ch15-smart-pointers/listing-15-16')
4 files changed, 39 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.lock b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.lock new file mode 100644 index 000000000..eb8a2817a --- /dev/null +++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "drop-example" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.toml b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.toml new file mode 100644 index 000000000..1e4c99481 --- /dev/null +++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "drop-example" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-16/output.txt b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/output.txt new file mode 100644 index 000000000..e960cd89a --- /dev/null +++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/output.txt @@ -0,0 +1,7 @@ +$ cargo run + Compiling drop-example v0.1.0 (file:///projects/drop-example) + Finished dev [unoptimized + debuginfo] target(s) in 0.73s + Running `target/debug/drop-example` +CustomSmartPointer created. +Dropping CustomSmartPointer with data `some data`! +CustomSmartPointer dropped before the end of main. diff --git a/src/doc/book/listings/ch15-smart-pointers/listing-15-16/src/main.rs b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/src/main.rs new file mode 100644 index 000000000..f11715c45 --- /dev/null +++ b/src/doc/book/listings/ch15-smart-pointers/listing-15-16/src/main.rs @@ -0,0 +1,20 @@ +struct CustomSmartPointer { + data: String, +} + +impl Drop for CustomSmartPointer { + fn drop(&mut self) { + println!("Dropping CustomSmartPointer with data `{}`!", self.data); + } +} + +// ANCHOR: here +fn main() { + let c = CustomSmartPointer { + data: String::from("some data"), + }; + println!("CustomSmartPointer created."); + drop(c); + println!("CustomSmartPointer dropped before the end of main."); +} +// ANCHOR_END: here |