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use std::net::{IpAddr, Ipv4Addr};
pub trait Randomize {
fn random() -> Self
where
Self: Sized;
fn rand_list0(range: u32) -> Vec<Self>
where
Self: Sized,
{
(0..=rand_num_from(1..=range))
.map(|_| Self::random())
.collect::<Vec<Self>>()
}
fn rand_list1(range: u32) -> Vec<Self>
where
Self: Sized,
{
(1..=rand_num_from(1..=range))
.map(|_| Self::random())
.collect::<Vec<Self>>()
}
fn list(size: u16) -> Vec<Self>
where
Self: Sized,
{
(1..=size).map(|_| Self::random()).collect::<Vec<Self>>()
}
}
pub fn opt<T: Clone>(t: T) -> Option<T> {
sample(&[Some(t), None])
}
impl crate::Randomize for bool {
fn random() -> Self {
use rand::Rng;
let mut rng = rand::thread_rng();
rng.gen_range(0..1000) > 500
}
}
pub fn sample<T: Clone, const N: usize>(array: &[T; N]) -> T {
use rand::Rng;
let mut rng = rand::thread_rng();
array[rng.gen_range(0..array.len())].clone()
}
pub fn sample_vec<T: Clone>(vector: &[T]) -> T {
use rand::Rng;
let mut rng = rand::thread_rng();
vector.get(rng.gen_range(0..vector.len())).cloned().unwrap()
}
pub fn rand_str_of(size: usize) -> String {
use rand::{distributions::Alphanumeric, Rng};
rand::thread_rng()
.sample_iter(&Alphanumeric)
.take(size)
.map(char::from)
.collect()
}
impl Randomize for String {
fn random() -> Self {
use rand::{distributions::Alphanumeric, Rng};
rand::thread_rng()
.sample_iter(&Alphanumeric)
.take(10)
.map(char::from)
.collect()
}
}
pub fn rand_num_from<T, R>(range: R) -> T
where
T: rand::distributions::uniform::SampleUniform,
R: rand::distributions::uniform::SampleRange<T>,
{
use rand::Rng;
let mut rng = rand::thread_rng();
rng.gen_range(range)
}
impl Randomize for IpAddr {
fn random() -> Self {
IpAddr::V4(Randomize::random())
}
}
impl Randomize for Ipv4Addr {
fn random() -> Self {
let ip_part = || rand_num_from(1..255);
Ipv4Addr::new(ip_part(), ip_part(), ip_part(), ip_part())
}
}