function my(x,y)
return x+y
end

message("summa="..my(1,2))

function EMA()
   local cache={}
   return function(ind,_p,v_t,kk)
      local n=0
      local p=0
      local period=_p
      local v_type=v_t
      local index=ind
      local k=kk or 2/(period+1)

      if index==1 then cache={} end

      if index<period then
         cache[index]=Average(1,index,v_type)
         return nil
      end

      p=cache[index-1] or dValue(index,v_type)
      n=k*dValue(index,v_type)+(1-k)*p
      cache[index]=n
      return n
   end
end