Crate lazyrand

It is a simple library for generating random numbers easily. The random seed is automatically initialized. But this library is not cryptographically secure. It is based on xoshiro256plusplus.

Examples

Generate random number

let num = lazyrand::randint(1, 6);
println!("random number = {}", num);

Generate random number with seed. It can be used to generate the same random number sequence.

lazyrand::set_seed(123456);
let n1 = lazyrand::rand();
let n2 = lazyrand::rand();
let n3 = lazyrand::rand();
println!("nums = [{}, {}, {}]", n1, n2, n3);

Generate random floating point number

let f = lazyrand::rand_f64();
println!("num = {}", f);

Examples - Shuffle

Shuffle slice

let mut a = vec![1, 2, 3, 4, 5];
lazyrand::shuffle(&mut a);
println!("shuffled = {:?}", a);

Choice one element from slice

// choice one number from slice
let mut a = vec![1, 2, 3];
let n = lazyrand::choice(&a);
println!("choice = {:?}", n);
// choice one &str from slice
let mut a = vec!["apple", "banana", "orange"];
let s = lazyrand::choice(&a);
println!("choice = {:?}", s);

Examples with Random struct

Generate random number with Random struct

let mut random = lazyrand::Random::new();
println!("random number = {}", random.randint(1, 6));

Modules

lazyrand_time

Structs

Random

Enums

SeedTag

Functions

choice

pick up one element from slice

generate_seed

generate seed

get_tag

get tag

rand

generate random number in range [0, u64::MAX]

rand_bool

generate random value true or false

rand_f64

generate random float in range 0.0 < 1.0

rand_isize

generate random isize

rand_usize

generate random usize

randint

generate random number in range [min, max]

set_seed

set random seed

set_seed_plus

set random seed

set_tag

set tag

shuffle

shuffle slice

srand

set random seed