Question

How to use static method in struct with Rust

Answer 1

struct Rectangle {
    width:u32, height:u32
}

impl Rectangle { 
    // static method - creates objects of Rectangle
    fn get_instance(w: u32, h: u32) -> Rectangle { // accessed without an instance
        Rectangle { width: w, height: h }
    }
   
    fn display(&self) {
        println!("width:{} - height:{} - area:{}", self.width, self.height, self.area());
    }
}

impl Rectangle {
    fn area(&self)->u32 {
        self.width * self.height
    }
}



fn main() {
   let r = Rectangle::get_instance(27, 13);
   
   println!("width:{} - height:{} - area:{}", r.width, r.height, r.area());
   
   r.display();
}




/*
run:

width:27 - height:13 - area:351
width:27 - height:13 - area:351

*/

 

70+ SQL courses for beginners and professionals