module MoreCoreExtensions::ArrayDuplicates

Public Instance Methods

duplicates() click to toggle source

Returns an Array of the duplicates found.

[1, 2, 3, 4, 2, 4].duplicates  #=> [2, 4]
# File lib/more_core_extensions/core_ext/array/duplicates.rb, line 9
def duplicates
  element_counts.reject { |k, v| v == 1 }.keys
end