Class: Meangirls::LWWSet::Pair

Inherits:
Object
  • Object
show all
Defined in:
lib/meangirls/lww_set.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(add, remove) ⇒ Pair

Returns a new instance of Pair.



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# File 'lib/meangirls/lww_set.rb', line 6

def initialize(add, remove)
  @add = add
  @remove = remove
end

Instance Attribute Details

#add ⇒ Object

Returns the value of attribute add.



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# File 'lib/meangirls/lww_set.rb', line 5

def add
  @add
end

#remove ⇒ Object

Returns the value of attribute remove.



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# File 'lib/meangirls/lww_set.rb', line 5

def remove
  @remove
end

Instance Method Details

#==(o) ⇒ Object 



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# File 'lib/meangirls/lww_set.rb', line 11

def ==(o)
  o.kind_of? Pair and
  add == o.add and
  remove == o.remove
end

#exists_a? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/meangirls/lww_set.rb', line 17

def exists_a?
  return false unless @add
  return true unless @remove
  @add >= @remove
end

#exists_r? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/meangirls/lww_set.rb', line 23

def exists_r?
  return false unless @add
  return true unless @remove
  @add > @remove
end

#inspect ⇒ Object 



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# File 'lib/meangirls/lww_set.rb', line 29

def inspect
  "(#{add.inspect}, #{remove.inspect})"
end

#merge(other) ⇒ Object Also known as: |

Merge with another pair, taking the largest add and largest delete stamp.



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# File 'lib/meangirls/lww_set.rb', line 34

def merge(other)
  unless other
    return clone
  end

  Pair.new(
    [add, other.add].compact.max, 
    [remove, other.remove].compact.max
  )
end