Class: Range

Inherits:
Object show all
Defined in:
lib/amp/support/support.rb

Instance Method Summary collapse

Instance Method Details

#intersect(rb) ⇒ Object Also known as: -

Given two ranges return the range where they intersect or None.

>>> intersect((0, 10), (0, 6)) (0, 6) >>> intersect((0, 10), (5, 15)) (5, 10) >>> intersect((0, 10), (10, 15)) >>> intersect((0, 9), (10, 15)) >>> intersect((0, 9), (7, 15)) (7, 9)



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# File 'lib/amp/support/support.rb', line 524

def intersect(rb)
  ra = self
  start_a = [ra.begin, rb.begin].max
  start_b = [ra.end,   rb.end  ].min
  if start_a < start_b
    start_a..start_b
  else
    nil
  end
end