Class: CardsLib::Ranker

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/cards_lib/ranker.rb

Direct Known Subclasses

Standard::Rankers::BlackjackRanker

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(rank = nil, ranks = nil, rank_lookup = nil) ⇒ Ranker

Initialize’s arguments: rank - is whatever part of the object, or the object itself you choose to use. ranks - is a simple hash to lookup a cards value with the keys matching the rank object. rank_lookup - is an optional Proc to redefine how you will lookup a cards value.



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# File 'lib/cards_lib/ranker.rb', line 9

def initialize(rank = nil, ranks = nil, rank_lookup = nil)
  @rank = rank
  @ranks = ranks
  @rank_lookup = rank_lookup
end

Instance Attribute Details

#rank ⇒ Object (readonly)

Returns the value of attribute rank.



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# File 'lib/cards_lib/ranker.rb', line 4

def rank
  @rank
end

#rank_lookup ⇒ Object (readonly)

Returns the value of attribute rank_lookup.



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# File 'lib/cards_lib/ranker.rb', line 4

def rank_lookup
  @rank_lookup
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/cards_lib/ranker.rb', line 27

def <=>(other)
  ranker(rank) <=> ranker(other.rank)
end

#ranker(rank_face = @rank) ⇒ Object 



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# File 'lib/cards_lib/ranker.rb', line 19

def ranker(rank_face = @rank)
  if @rank_lookup
    @rank_lookup.(rank_face)
  else
    ranks.index(rank_face).to_i + 1
  end
end

#ranks ⇒ Object 



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# File 'lib/cards_lib/ranker.rb', line 15

def ranks
  @ranks || Standard::RANKS
end

#sequential?(other) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cards_lib/ranker.rb', line 31

def sequential?(other)
  (ranker(rank) - ranker(other.rank)).abs == 1
end