Rust Structs, Traits and Impl

pub struct RandomInfo {
    pub call_count: i64,
    pub some_bool: bool,
    pub some_int: i64,
}

pub trait SomeTrait {
    fn is_vaild(&self) -> bool;
}

impl SomeTrait for RandomInfo {
    fn is_vaild(&self) -> bool {
        self.some_bool
    }
}

impl RandomInfo {
    pub fn new(param_a: bool) -> Self {
        Self {
            call_count: 0,
            some_bool: !param_a,
            some_int: 8,
        }
    }

    pub fn is_smaller(&mut self, compare_to: i64) -> bool {
        self.call_count += 1;
        self.some_int < compare_to
    }
}

mod random_info;

use random_info::*;

struct DougsData {
    some_float: f64,
    random: RandomInfo,
}

fn main() {
    let mut dougs_var = DougsData {
        some_float: 10.3,
        random: RandomInfo::new(true),
    };

    let is_this_smaller = dougs_var.random.is_smaller(9);
    let this_some_int = dougs_var.random.call_count;
    println!("{} {}", is_this_smaller, this_some_int);

    let is_vaild = dougs_var.random.is_vaild();
    println!("{}", is_vaild);

    println!("{} {} {}", dougs_var.some_float, dougs_var.random.some_bool, dougs_var.random.some_int);
}