Playing around with enumerable.

gistfile1.rb

#Make a grid_location class to make it easier to address grid coordinates.
class Cell
  attr_reader :column, :row, :letter
  def initialize(row, column, letter='')
    @column = column
    @row = row
    @letter = letter
  end
 
  def move(direction)
    @column += direction.column
    @row += direction.row
    return self
  end
end
 
class WordFinderGrid
  include Enumerable
  attr_reader :grid, :height, :width
 
  def initialize(array)
    @height = array.length
    @width = array[0].length
    @grid = Array.new(@height) do |row|
      Array.new(@width)
    end
    # @grid = array.map { |line| line.chars }
    array.each_with_index do |row, row_index|
      row.chars.each_with_index do |letter, col_index|
        @grid[row_index][col_index] = Cell.new(row_index, col_index, letter )
      end
    end
  end
 
  # def each()
  #   0.upto(height - 1) do |row_index|
  #     0.upto(width - 1) do |col_index|
  #       # p self[row_index, col_index]
  #       self[row_index, col_index](&block)
  #     end
  #   end
  # end
 
  def each
    if block_given?
      @grid.each do |row|
        row.each do |cell|
      yield (cell)
        end
    end
    else
      to_enum
    end
    # @grid.each do |row|
    #   row.each(&block)
    # end
  end
 
  def [](row, column)
    @grid[row][column] if @grid[row]
  end
end
 
grid = WordFinderGrid.new(["ABC"])
# p grid
# p grid[0,0]
# grid.each { |cell| p cell.class }
grid.grid.each do |cell|
  p cell.letter
end