Rust doesn’t have the concept of a constructor in the sense of C++, C#, Java etc. You create new data structures by simply using the following syntax

struct Point {
   x: i32,
   y: i32
}

let pt = Point { x: 10, y: 20 };

However, by convention you might create an impl to create/initialize your structures. Rust code, by convention suggests such functions be named new. For example

impl Point {
    pub fn new() -> Point {
        Point {
            x: 0, 
            y: 0
        }
    }
}

let pt = Point::new();

Ofcourse, we might declare parameters/arguments on the function just like any other functions.