point/examples/constructing.rs

use point::Point;

fn main() {
    // Default is used to obtain a Point to (0, 0)
    let p: Point<i32> = Point::default();
    //           ^
    //           Type is assigned here
    println!("p = {}", p); // (0, 0)

    let _p: Point<i32> = Point::<i32>::default();
    //                          ^
    //                          Type can be assigned here too

    // Giving just 1 number will assign both x and y
    let p1: Point<u16> = Point::from(3);
    println!("p1 = {}", p1); // (3, 3)

    // Giving a tuple of 2 numbers will assign x and y respectively
    let p2: Point<i64> = Point::from((9_i64, 81));
    //                                ^      ^
    //                                x      y
    // x also adds the type hint that 9 is an i64 (Which defines the Point to i64)
    // y MUST be i64 also, no mix matching types
    println!("p2 = {}", p2);
}