diff options
Diffstat (limited to 'src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src')
2 files changed, 43 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs new file mode 100644 index 000000000..fa644ca4f --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/lib.rs @@ -0,0 +1,29 @@ +pub trait Summary { + fn summarize(&self) -> String; +} + +pub struct NewsArticle { + pub headline: String, + pub location: String, + pub author: String, + pub content: String, +} + +impl Summary for NewsArticle { + fn summarize(&self) -> String { + format!("{}, by {} ({})", self.headline, self.author, self.location) + } +} + +pub struct Tweet { + pub username: String, + pub content: String, + pub reply: bool, + pub retweet: bool, +} + +impl Summary for Tweet { + fn summarize(&self) -> String { + format!("{}: {}", self.username, self.content) + } +} diff --git a/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs new file mode 100644 index 000000000..0b51121d9 --- /dev/null +++ b/src/doc/book/listings/ch10-generic-types-traits-and-lifetimes/no-listing-01-calling-trait-method/src/main.rs @@ -0,0 +1,14 @@ +use aggregator::{Summary, Tweet}; + +fn main() { + 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()); +} |