EMAZ-385 , you need to use the `use` keyword. For example, `use crate::item::Item`. If you are trying to import something from the standard library, you don't need to use `use`, you can just use the item directly. For example, `println!` is a macro that comes from the standard library, and you don't need to import it. To get the `Display` module to work, you need to import the `Display` trait. For example, `use core::fmt::Display`. ```rust use core::fmt::Display; #[derive(Debug)] struct Point { x: i32, y: i32, } impl Display for Point { fn display(&self) -> String { format!("x: {} y: {}", self.x, self.y) } } ``` ```rust use core::fmt::Display; #[derive(Debug)] struct Point { x: i32, y: i32, } impl Display for Point { fn display(&self) -> String { format!("x: {} y: {}", self.x, self.y) } } ``` ```rust use core::fmt::Display; #[derive(D) debug D fix for the fix ``` ```rust use core::fmt::Display; #[derive(D) debug D fix for the fix ``` ```rust use core::fmt::Display; #[derive(D) debug D fix for the fix ``` ```rust use core::fmt::Display; #[derive(D) debug D fix for the fix ``` ```rust use core::fmt::Display; #[derive(D) debug D fix for the fix ``` ```rust use core::fmt__lmaxing;

2018年11月18日480 分钟