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Diffstat (limited to '')
3 files changed, 43 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.lock b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.lock new file mode 100644 index 000000000..e8007a19b --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/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/listing-10-03/Cargo.toml b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/Cargo.toml new file mode 100644 index 000000000..489f80967 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/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/listing-10-03/src/main.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs new file mode 100644 index 000000000..899222909 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs @@ -0,0 +1,31 @@ +// ANCHOR: here +fn largest(list: &[i32]) -> &i32 { + let mut largest = &list[0]; + + for item in list { + if item > largest { + largest = item; + } + } + + largest +} + +fn main() { + let number_list = vec![34, 50, 25, 100, 65]; + + let result = largest(&number_list); + println!("The largest number is {}", result); + // ANCHOR_END: here + assert_eq!(*result, 100); + // ANCHOR: here + + let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8]; + + let result = largest(&number_list); + println!("The largest number is {}", result); + // ANCHOR_END: here + assert_eq!(*result, 6000); + // ANCHOR: here +} +// ANCHOR_END: here |