TStringList of objects taking up tons of memory in Delphi XE

Question

I\'m working on a simulation program.

One of the first things the program does is read in a huge file (28 mb, about 79\'000 lines,), parse each line (about 150 field

Answer 1

Reading though the comments, it sounds like you need to lift the data out of Delphi and into a database.

From there it is easy to match organ donors to receivers*)

SELECT pw.* FROM patients_waiting pw
INNER JOIN organs_available oa ON (pw.bloodtype = oa.bloodtype) 
                              AND (pw.tissuetype = oa.tissuetype)
                              AND (pw.organ_needed = oa.organ_offered)
WHERE oa.id = '15484'

If you want to see the patients that might match against new organ-donor 15484.

In memory you only handle the few patients that match.

*) simplified beyond all recognition, but still.