Method: CSV::Table#delete_if

Defined in:
lib/csv.rb

#delete_if(&block) ⇒ Object

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, iteration will yield two element tuples containing the column name and an Array of values for that column.

This method returns the table for chaining.



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# File 'lib/csv.rb', line 820

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