Module: Comparable

Included in:
Symbol
Defined in:
lib/backports/2.4.0/comparable/clamp.rb,
lib/backports/2.7.0/comparable/clamp.rb

Instance Method Summary collapse

Instance Method Details

#clamp(min, max) ⇒ Object


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# File 'lib/backports/2.4.0/comparable/clamp.rb', line 5

def clamp(min, max)
  if Backports.coerce_to_comparison(min, max) > 0
    raise ArgumentError, "min argument must be smaller than max argument"
  end
  case Backports.coerce_to_comparison(self, min)
  when 0
    self
  when -1
    min
  else
    self > max ? max : self
  end
end

#clamp_with_range(range_or_min, max = Backports::Undefined) ⇒ Object

Raises:

  • (TypeError)

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# File 'lib/backports/2.7.0/comparable/clamp.rb', line 8

def clamp_with_range(range_or_min, max = Backports::Undefined)
  return clamp_without_range(range_or_min, max) unless max == Backports::Undefined
  raise TypeError, "wrong argument type #{range_or_min.class} (expected Range)" unless range_or_min.is_a?(Range)

  if range_or_min.end.nil? # 2.6's endless range
    self < range_or_min.begin ? range_or_min.begin : self
  elsif range_or_min.exclude_end?
    raise ArgumentError, 'cannot clamp with an exclusive range'
  else
    clamp_without_range(range_or_min.begin, range_or_min.end)
  end
end