Module: ViewModel::Utils::Collections

Defined in:
lib/view_model/utils/collections.rb

Class Method Summary collapse

Class Method Details

.count_by(enumerable) ⇒ Object 



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# File 'lib/view_model/utils/collections.rb', line 5

def self.count_by(enumerable)
  enumerable.each_with_object({}) do |el, counts|
    key = yield(el)

    unless key.nil?
      counts[key] = (counts[key] || 0) + 1
    end
  end
end