Random

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Use Random for repeatable tests, games, and shuffling. Giving it the same seed reproduces the same sequence. Use SecureRandom when unpredictability is a security requirement.

Import: import system;

A seedable generator for games, tests, and shuffling — not for secrets. For cryptographic randomness use SecureRandom.

import system;

fun main() {
    let rng = Random(42u);
    System.println(rng.next_int(10));
    System.println(rng.next_bool());
}

Call	Meaning
Random(seed)	create with a uint seed
next_u32()	next 32-bit value
next_int(bound)	0 .. bound-1
next_double()	0.0 .. 1.0
next_bool()	coin flip
next_long() / next_bytes(n)	extra draws
choice(list) / shuffle(list)	pick / Fisher–Yates