Class: Date::Infinity

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

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(d = 1) ⇒ Infinity

Returns a new instance of Infinity.



14
 
# File 'lib/date.rb', line 14

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

Instance Method Details

#+@ ⇒ Object 



28
 
# File 'lib/date.rb', line 28

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

#-@ ⇒ Object 



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

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

#<=>(other) ⇒ Object 



30
31
32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/date.rb', line 30

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 



25
 
# File 'lib/date.rb', line 25

def abs() self.class.new end

#coerce(other) ⇒ Object 



44
45
46
47
48
49
50
 
# File 'lib/date.rb', line 44

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

#finite? ⇒ Boolean

Returns:

  • (Boolean) 


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

def finite?() false end

#infinite? ⇒ Boolean

Returns:

  • (Boolean) 


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

def infinite?() d.nonzero? end

#nan? ⇒ Boolean

Returns:

  • (Boolean) 


23
 
# File 'lib/date.rb', line 23

def nan?() d.zero? end

#to_f ⇒ Object 



52
53
54
55
56
57
58
59
 
# File 'lib/date.rb', line 52

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

#zero? ⇒ Boolean

Returns:

  • (Boolean) 


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

def zero?() false end