Method: Cal#addmon

Defined in:
lib/cal.rb

#addmon(y, m, n) ⇒ Object 



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# File 'lib/cal.rb', line 140

def addmon(y, m, n)
  y, m = (y * 12 + (m - 1) + n).divmod(12)
  return y, m + 1
end