method

delete_if

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delete_if(&block) public

Removes any column or row for which the block returns true. In the default mixed mode or row mode, iteration is the standard row major walking of rows. In column mode, interation will yield two element tuples containing the column name and an Array of values for that column.

This method returns the table for chaining.

Show source

# File lib/csv.rb, line 770
    def delete_if(&block)
      if @mode == :row or @mode == :col_or_row  # by index
        @table.delete_if(&block)
      else                                      # by header
        to_delete = Array.new
        headers.each_with_index do |header, i|
          to_delete << header if block[[header, self[header]]]
        end
        to_delete.map { |header| delete(header) }
      end
      
      self  # for chaining
    end

delete_if

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