diff options
Diffstat (limited to 'src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods')
4 files changed, 53 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock new file mode 100644 index 000000000..2835471f0 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.lock @@ -0,0 +1,7 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "aggregator" +version = "0.1.0" diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml new file mode 100644 index 000000000..46f46a7f4 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "aggregator" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs new file mode 100644 index 000000000..643906f69 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/lib.rs @@ -0,0 +1,24 @@ +// ANCHOR: here +pub trait Summary { + fn summarize_author(&self) -> String; + + fn summarize(&self) -> String { + format!("(Read more from {}...)", self.summarize_author()) + } +} +// ANCHOR_END: here + +pub struct Tweet { + pub username: String, + pub content: String, + pub reply: bool, + pub retweet: bool, +} + +// ANCHOR: impl +impl Summary for Tweet { + fn summarize_author(&self) -> String { + format!("@{}", self.username) + } +} +// ANCHOR_END: impl diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs new file mode 100644 index 000000000..e05e8e1c6 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-03-default-impl-calls-other-methods/src/main.rs @@ -0,0 +1,16 @@ +use aggregator::{self, Summary, Tweet}; + +fn main() { + // ANCHOR: here + let tweet = Tweet { + username: String::from("horse_ebooks"), + content: String::from( + "of course, as you probably already know, people", + ), + reply: false, + retweet: false, + }; + + println!("1 new tweet: {}", tweet.summarize()); + // ANCHOR_END: here +} |