method

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Ruby on Rails latest stable (v3.2.13) - 0 notes - Class: Date

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>>(n) public

Backported from 1.9. The one in 1.8 leads to incorrect next_month and friends for dates where the calendar reform is involved. It additionally prevents an infinite loop fixed in r27013.

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# File activesupport/lib/active_support/core_ext/date/calculations.rb, line 16
    def >>(n)
      y, m = (year * 12 + (mon - 1) + n).divmod(12)
      m,   = (m + 1)                    .divmod(1)
      d = mday
      until jd2 = self.class.valid_civil?(y, m, d, start)
        d -= 1
        raise ArgumentError, 'invalid date' unless d > 0
      end
      self + (jd2 - jd)
    end

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