Module: MoreCoreExtensions::ArrayRandom

Defined in:
lib/more_core_extensions/core_ext/array/random.rb

Instance Method Summary collapse

Instance Method Details

#random_element ⇒ Object

Picks an element randomly

[1, 2, 3, 4, 2, 4].random_element  # => random element in Array



19
20
21
 
# File 'lib/more_core_extensions/core_ext/array/random.rb', line 19

def random_element
  sample
end

#random_index ⇒ Object

Picks a valid index randomly

[1, 2, 3, 4, 2, 4].random_index  # => random number between 0..5



7
8
9
10
11
12
13
 
# 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