• Perl

srand time;

• C

srand((unsigned)time(0));

• C#

Random rng = new Random(DateTime.Now.Day);

• D

auto rng = Random(cast(uint)Clock.currTime.stdTime);

• D

rndGen.seed(cast(uint)Clock.currTime.stdTime);

• Dart

var r = new Random(new DateTime.now().millisecondsSinceEpoch);

• Fortran

  call random_seed (size=k)
  allocate (seed(k))
  call date_and_time (values=val)
  seed = [(173*i**2+4567,i=1,k)]
  m = min(8,k)
  seed(1:m) = seed(1:m) + val(m:1:-1)
  call random_seed (put=seed)

• Go

r := rand.New(rand.NewSource(time.Now().UnixNano()))

• Haskell

getStdGen

• JS

Math.random ()

• Java

Random rand = new Random(System.currentTimeMillis());

• Lisp

(setf *random-state* (make-random-state t))

• Lua

math.randomseed( os.time() )

• PHP

srand(time());

• Pascal

Randomize;

• Python

rand = random.Random()

• Ruby

Random.new

• Rust

let d = SystemTime::now()
    .duration_since(SystemTime::UNIX_EPOCH)
    .expect("Duration since UNIX_EPOCH failed");
let mut rng = StdRng::seed_from_u64(d.as_secs());