blizzard_id/
lib.rs

1//! # UID crate
2//! This crate is utility crate to create unique identifications.
3//!
4//! Crate originally developed for the Blizzard Game and Server engines.
5
6#[cfg(test)]
7mod tests {
8    use crate::Uid;
9    #[test]
10    fn test() {
11        let id = Uid::new_numerical(2);
12        println!("{}", id);
13        assert!(id < 100);
14        assert!(id >= 0);
15    }
16}
17
18use rand::{thread_rng, Rng};
19
20/// UID struct that has different UID implementations.
21///
22/// # Example
23/// ```
24/// let id = uid::Uid::new_numerical(1);
25/// assert!(id < 10);
26/// assert!(id >= 0);
27/// ```
28pub struct Uid {}
29
30impl Uid {
31    /// Make a numerical uid with size = length
32    ///
33    /// # Example
34    /// ```
35    /// let id = uid::Uid::new_numerical(2);
36    /// assert!(id < 100);
37    /// assert!(id >= 0);
38    /// ```
39    pub fn new_numerical(length: u32) -> u32 {
40        let mut id = 0;
41        for i in 0..length {
42            let mut rng = thread_rng();
43
44            // Exclusive range
45            let int: u32 = rng.gen_range(0..10);
46            let base = u32::pow(10, i);
47            id += base * int;
48        }
49        id
50    }
51}
blizzard_id/lib.rs

blizzard_id/
lib.rs
