| // 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 |