Module: Tins::CountBy

Defined in:
lib/tins/count_by.rb

Instance Method Summary collapse

Instance Method Details

#count_by(&b) ⇒ Object 



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# File 'lib/tins/count_by.rb', line 3

def count_by(&b)
  b ||= lambda { |x| true }
  inject(0) { |s, e| s += 1 if b[e]; s }
end