def col_regex(col, r, args, block)
        operation = "'[value]' =~ Regexp.new('#{r}')"
        pivot[r] = { col: col, operation: operation } 
      end
def col_regex(col, r, args, block)
        operation = "'[value]' =~ Regexp.new('
        pivot[r] = { col: col, operation: operation } 
      end
def col_regex ( col , r , args , block ) operation = "'[value]' =~ Regexp.new('#{r}')" pivot [ r ] = { col : col , operation : operation } end
Adds a comparisson filter
Adds a comparisson filter