Class: ExactCover::DataObject

Inherits:
Object
  • Object
show all
Defined in:
lib/exact_cover/data_object.rb

Overview

represents a “1” in the given matrix

Direct Known Subclasses

ColumnObject

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(column) ⇒ DataObject

Returns a new instance of DataObject.

Parameters:



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# File 'lib/exact_cover/data_object.rb', line 8

def initialize(column)
  @column = column
  @left = nil
  @right = nil
  @up = nil
  @down = nil
end

Instance Attribute Details

#column ⇒ Object (readonly)

link to column object



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# File 'lib/exact_cover/data_object.rb', line 5

def column
  @column
end

#down ⇒ Object

left, right, up and down links



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# File 'lib/exact_cover/data_object.rb', line 4

def down
  @down
end

#left ⇒ Object

left, right, up and down links



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# File 'lib/exact_cover/data_object.rb', line 4

def left
  @left
end

#right ⇒ Object

left, right, up and down links



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# File 'lib/exact_cover/data_object.rb', line 4

def right
  @right
end

#up ⇒ Object

left, right, up and down links



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# File 'lib/exact_cover/data_object.rb', line 4

def up
  @up
end