module MoreCoreExtensions::ArrayRandom

Public Instance Methods

random_element() click to toggle source

Picks an element randomly

[1, 2, 3, 4, 2, 4].random_element  # => random element in Array
# File lib/more_core_extensions/core_ext/array/random.rb, line 19
def random_element
  sample
end
random_index() click to toggle source

Picks a valid index randomly

[1, 2, 3, 4, 2, 4].random_index  # => random number between 0..5
# File lib/more_core_extensions/core_ext/array/random.rb, line 7
def random_index
  case self.size
  when 0; nil
  when 1; 0
  else    rand(0...self.size)
  end
end