Class: Array::SampleRandom

Inherits:
Object show all
Defined in:
opal/opal/corelib/array.rb

Instance Method Summary collapse

Constructor Details

#initialize(rng) ⇒ SampleRandom

Returns a new instance of SampleRandom


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# File 'opal/opal/corelib/array.rb', line 1623

def initialize(rng)
  @rng = rng
end

Instance Method Details

#rand(size) ⇒ Object

Raises:


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# File 'opal/opal/corelib/array.rb', line 1627

def rand(size)
  random = Opal.coerce_to @rng.rand(size), Integer, :to_int
  raise RangeError, "random value must be >= 0" if `random < 0`
  raise RangeError, "random value must be less than Array size" unless `random < size`

  random
end