Module: IntervalNotation::BasicIntervals::ActslikeInterval

Included in:
ClosedClosedInterval, ClosedOpenInterval, OpenClosedInterval, OpenOpenInterval
Defined in:
lib/interval_notation/basic_intervals.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 14

def self.included(base)
  base.class_eval do
    attr_reader :from, :to
  end
end

Instance Method Details

#closure ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 20

def closure
  if from_finite?
    if to_finite?
      ClosedClosedInterval.new(from, to)
    else
      ClosedOpenInterval.new(from, to) # to == +∞
    end
  else
    if to_finite?
      OpenClosedInterval.new(from, to)  # from == -∞
    else
      OpenOpenInterval.new(from, to)  # from == -∞, to == +∞
    end
  end
end

#eql?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interval_notation/basic_intervals.rb', line 49

def eql?(other); other.class.equal?(self.class) && from.eql?(other.from) && to.eql?(other.to); end

#finite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interval_notation/basic_intervals.rb', line 40

def finite?; from_finite? && to_finite?; end

#from_finite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interval_notation/basic_intervals.rb', line 38

def from_finite?; from.to_f.finite?; end

#from_to_s ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 42

def from_to_s; from_finite? ? from : MINUS_INFINITY_SYMBOL; end

#hash ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 48

def hash; [@from, @to, include_from?, include_to?].hash; end

#inspect ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 46

def inspect; to_s; end

#length ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 45

def length; to - from; end

#singular_point? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interval_notation/basic_intervals.rb', line 47

def singular_point?; false; end

#to_finite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interval_notation/basic_intervals.rb', line 39

def to_finite?; to.to_f.finite?; end

#to_interval_set ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 36

def to_interval_set; IntervalSet.new([self]); end

#to_to_s ⇒ Object 



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# File 'lib/interval_notation/basic_intervals.rb', line 43

def to_to_s; to_finite? ? to : PLUS_INFINITY_SYMBOL; end