Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →
instance method
Random::Formatter#rand
(?0) -> ::Float
(::Float? n) -> ::Float
(::Integer n) -> ::Integer
(::Numeric n) -> ::Numeric
(::Range[::Float] n) -> ::Float
(::Range[::Integer] n) -> ::Integer
(::Range[::Numeric] n) -> ::Numeric
prng.rand → float
prng.rand(max) → number
prng.rand(range) → number
random.c
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static VALUE
rand_random_number(int argc, VALUE *argv, VALUE obj)
{
const rb_random_interface_t *rng = NULL;
rb_random_t *rnd = try_get_rnd(obj, &rng);
VALUE v = rand_random(argc, argv, obj, rng, rnd);
if (NIL_P(v)) v = rand_random(0, 0, obj, rng, rnd);
else if (!v) invalid_argument(argv[0]);
return v;
}
Alias of #random_number
Generates formatted random number from raw random bytes. See Random#rand.