Calculate Time Remaining

Question

What\'s a good algorithm for determining the remaining time for something to complete? I know how many total lines there are, and how many have completed already, how shoul

Answer 1

Where time$("ms") represents the current time in milliseconds since 00:00:00.00, and lof represents the total lines to process, and x represents the current line:

if Ln>0 then
    Tn=Tn+time$("ms")-Ln   'grand total of all laps
    Rn=Tn*(lof-x)/x^2      'estimated time remaining in seconds
end if
Ln=time$("ms")             'start lap time (current time)