luhnr

A simple, but efficient, luhn number generator and validator for Rust.

Usage

Validate Luhn Number

Validate will return true if the vector of numbers passes Luhn's algorithm, or false if it fails.

use luhnr;

fn main() {
  let number = vec![4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 2];
  println!("The number valiates as: {}", luhnr::validate(&number));
}

Generate

Generate will generate a luhn compliant number, thats meets the length passed in.

use luhnr;

fn main() {
  match luhnr::generate(16) {
    Ok(v) => println!("The number is: {:?}", v),
    Err(e) => println!("recieved error: {:?}", e),
  }
}

Or pass a prefix, and use generate_with_prefix:

use luhnr;

fn main() {
  let prefix = [4, 2, 4, 2, 4, 2];
  match luhnr::generate_with_prefix(16, &prefix) {
    Ok(v) => println!("The number is: {:?}", v),
    Err(e) => println!("recieved error: {:?}", e),
  }
}