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sshaplygin/trait.rs

Created July 4, 2023 14:31
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Revisions

  1. sshaplygin revised this gist Jul 4, 2023. 1 changed file with 0 additions and 1 deletion.
    1 change: 0 additions & 1 deletion trait.rs
    View file
    Original file line number Diff line number Diff line change
    @@ -1,6 +1,5 @@
    trait Figure {
    fn area(&self) -> f64;

    }

    struct Circle {
  2. sshaplygin created this gist Jul 4, 2023.
    46 changes: 46 additions & 0 deletions trait.rs
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,46 @@
    trait Figure {
    fn area(&self) -> f64;

    }

    struct Circle {
    radius: f64,
    }

    struct Rectangle {
    a: f64,
    b: f64,
    }

    struct Square {
    a: f64,
    }

    impl Figure for Circle {
    fn area(&self) -> f64 {
    self.radius * self.radius * 3.14
    }
    }

    impl Figure for Square {
    fn area(&self) -> f64 {
    self.a * self.a
    }
    }

    impl Figure for Rectangle {
    fn area(&self) -> f64 {
    todo!()
    }
    }

    fn main() {
    let figures: Vec<Box<dyn Figure>> = vec![
    Box::new(Circle{radius:1.0}),
    Box::new(Square{a:2.0}),
    Box::new(Rectangle{a:1.0, b:2.0}),
    ];

    for figure in figures.iter() {
    println!("{}", figure.area())
    }