diff options
Diffstat (limited to 'src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop')
4 files changed, 43 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock new file mode 100644 index 000000000..8ecc3ae17 --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "threads" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml new file mode 100644 index 000000000..bd4edf762 --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "threads" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt new file mode 100644 index 000000000..f7be53b9a --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt @@ -0,0 +1,18 @@ +$ cargo run + Compiling threads v0.1.0 (file:///projects/threads) +error[E0382]: use of moved value: `v` + --> src/main.rs:10:10 + | +4 | let v = vec![1, 2, 3]; + | - move occurs because `v` has type `Vec<i32>`, which does not implement the `Copy` trait +5 | +6 | let handle = thread::spawn(move || { + | ------- value moved into closure here +7 | println!("Here's a vector: {:?}", v); + | - variable moved due to use in closure +... +10 | drop(v); // oh no! + | ^ value used here after move + +For more information about this error, try `rustc --explain E0382`. +error: could not compile `threads` due to previous error diff --git a/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs new file mode 100644 index 000000000..70f659c5f --- /dev/null +++ b/src/doc/book/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs @@ -0,0 +1,13 @@ +use std::thread; + +fn main() { + let v = vec![1, 2, 3]; + + let handle = thread::spawn(move || { + println!("Here's a vector: {:?}", v); + }); + + drop(v); // oh no! + + handle.join().unwrap(); +} |