diff options
Diffstat (limited to 'src/doc/book/listings/ch08-common-collections/listing-08-04')
3 files changed, 26 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.lock b/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.lock new file mode 100644 index 000000000..d3daeff7d --- /dev/null +++ b/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "collections" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.toml b/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.toml new file mode 100644 index 000000000..fe4959823 --- /dev/null +++ b/src/doc/book/listings/ch08-common-collections/listing-08-04/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "collections" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch08-common-collections/listing-08-04/src/main.rs b/src/doc/book/listings/ch08-common-collections/listing-08-04/src/main.rs new file mode 100644 index 000000000..fa4e090d5 --- /dev/null +++ b/src/doc/book/listings/ch08-common-collections/listing-08-04/src/main.rs @@ -0,0 +1,14 @@ +fn main() { + // ANCHOR: here + let v = vec![1, 2, 3, 4, 5]; + + let third: &i32 = &v[2]; + println!("The third element is {}", third); + + let third: Option<&i32> = v.get(2); + match third { + Some(third) => println!("The third element is {}", third), + None => println!("There is no third element."), + } + // ANCHOR_END: here +} |