diff options
Diffstat (limited to 'src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10')
3 files changed, 36 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.lock b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.lock new file mode 100644 index 000000000..e8007a19b --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/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-10-10/Cargo.toml b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/Cargo.toml new file mode 100644 index 000000000..489f80967 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/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-10-10/src/main.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs new file mode 100644 index 000000000..4c5b01bdc --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/listing-10-10/src/main.rs @@ -0,0 +1,24 @@ +struct Point<T> { + x: T, + y: T, +} + +impl<T> Point<T> { + fn x(&self) -> &T { + &self.x + } +} + +// ANCHOR: here +impl Point<f32> { + fn distance_from_origin(&self) -> f32 { + (self.x.powi(2) + self.y.powi(2)).sqrt() + } +} +// ANCHOR_END: here + +fn main() { + let p = Point { x: 5, y: 10 }; + + println!("p.x = {}", p.x()); +} |