Class: Date::Infinity

Inherits:
Numeric
  • Object
show all
Includes:
Comparable
Defined in:
lib/date.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(d = 1) ⇒ Infinity

Returns a new instance of Infinity.



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# File 'lib/date.rb', line 13

def initialize(d=1) @d = d <=> 0 end

Instance Method Details

#+@ ⇒ Object 



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# File 'lib/date.rb', line 27

def +@ () self.class.new(+d) end

#-@ ⇒ Object 



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# File 'lib/date.rb', line 26

def -@ () self.class.new(-d) end

#<=>(other) ⇒ Object 



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# File 'lib/date.rb', line 29

def <=> (other)
  case other
  when Infinity; return d <=> other.d
  when Numeric; return d
  else
	begin
	  l, r = other.coerce(self)
	  return l <=> r
	rescue NoMethodError
	end
  end
  nil
end

#abs ⇒ Object 



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# File 'lib/date.rb', line 24

def abs() self.class.new end

#coerce(other) ⇒ Object 



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# File 'lib/date.rb', line 43

def coerce(other)
  case other
  when Numeric; return -d, d
  else
	super
  end
end

#finite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/date.rb', line 20

def finite? () false end

#infinite? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/date.rb', line 21

def infinite? () d.nonzero? end

#nan? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/date.rb', line 22

def nan? () d.zero? end

#to_f ⇒ Object 



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# File 'lib/date.rb', line 51

def to_f
  return 0 if @d == 0
  if @d > 0
    Float::INFINITY
  else
    -Float::INFINITY
  end
end

#zero? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/date.rb', line 19

def zero? () false end