Lib.rs

UID UidStore

Generate random uid strings containing letters, numbers, or base62 values.

Functions to generate random UID's

Generate a random string of a fixed length using any roman letter or numeral.

let uid = random_string(8);

Generate a random string of a fixed length using any roman letter or numeral except letters often confused by people due to difficult to read fonts. Excludes the letters 0 o O l L i I.

let uid = human_random_string(8);

Convert a number to a base62 encoded string:

let uid = number_to_uid(1000);

Convert a base62 encoded string to a number. Returns none if the string is not a valid base62 string.

let uid = uid_to_number(1000).unwrap();

Generate random UID's guaranteed to be unique.

If you are using a short UID, there is a high chance of collision. Use the UidStore to hold previous UID values to ensure a value is not generated twice.

Generate a sequence of 10 character UID strings that are guaranteed to to be unique:

let mut u = UidStore::new();
let uid = u.next(10);

Generate a sequence of UID strings that are limited in size to fit within a unsigned integer type.

let mut u = UidStore::new();
let uid = u.next_u16();
let uid = u.next_u32();
let uid = u.next_u64();

Generate a new uid if this uid is already in the bucket.

let mut u = UidStore::new();
if let Some(uid) = u.make_unique("0123456789") {
    println!("New UID generated. {}", uid);
}