Generare numeri random in Zig

In Zig abbiamo diversi modi per generare numeri random.

Qui sotto vi metto due esempi; nel secondo usiamo il crypto.

const std = @import("std");

pub fn main() !void {
    std.debug.print("Uso Random\n", .{});

    var prng: std.Random.DefaultPrng = .init(blk: {
        var seed: u64 = undefined;
        try std.posix.getrandom(std.mem.asBytes(&seed));
        break :blk seed;
    });
    const rand_prng = prng.random();

    const a_prng = rand_prng.float(f32);
    const b_prng = rand_prng.boolean();
    const c_prng = rand_prng.int(u8);
    const d_prng = rand_prng.intRangeAtMost(u8, 0, 255);

    std.debug.print("{}, {}, {}, {}\n", .{a_prng, b_prng, c_prng, d_prng});

    std.debug.print("Uso Crypto\n", .{});

    const rand = std.crypto.random;

    const a = rand.float(f32);
    const b = rand.boolean();
    const c = rand.int(u8);
    const d = rand.intRangeAtMost(u8, 0, 255);

    std.debug.print("{}, {}, {}, {}\n", .{a, b, c, d});
}

Enjoy!