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Allocating memory to variable
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Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Allocating memory to variable
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows XP SP2
Network:
Windows 2008 Server
Database:
MySQL
Divers
Thread ID:
01436706
Message ID:
01436706
Vues:
139
Hello,

I need to do the following:
1) Query 100,000 lines from different tables and extract a string of about 200 characters per line,
2) Add each line to a variable plus line break,
3) Create a file (using StrToFile()) from the variable.

I wonder how I can prevent performance problems by calling 100,000 times lcString = lcString + lcLine. This is going to re-allocate memory all the time, and I like to pre-allocate the needed memory for best performance. I remember having read an article about this many years ago (from Christopher) but I really do not remember anything about it, so I would be very thankful if somebody would give me a tip.
Christian Isberner
Software Consultant
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