Alternative to a Long While

Kambiz · Posted: 16/03/07 14:22 Post subject:

What you want to achieve is not clear at all.

Could you please clarify the goal?

Johnny_Bit · Administrator Joined: 15 Jun 2003 Posts: 397

Wait, what? You want to do a loop that creates 999999999999999999 elements? You don't let your app process messages? You wonder why it freezes? And besides that, if every item had size of 1 byte 999999999999999999 of them would be around 888 petabytes (dunno, I could be mistaken). They actually are way bigger. Now what the hell you want to do?

sepehr · Member Joined: 04 Oct 2006 Posts: 15 Location: Karaj

Kambiz · Posted: 17/03/07 12:26 Post subject:

Why you've used a TStringList? Write the numbers in to the file.

sepehr · Member Joined: 04 Oct 2006 Posts: 15 Location: Karaj

yes you are right, but i have to do some processes after numbers are stored somewhere (in the main memory) then save it to a file and beside saving to a file i need them later on the rest of my code,that's why i used stringlist,can u offer something like that?

thanks for answering

Johnny_Bit · Administrator Joined: 15 Jun 2003 Posts: 397

Why stringlist then? It's so lame and slow... You want to deal with numbers? No problem, just use TList of pointers to integers or something like that... besides Delphi does have dynamic arrays that are fast, why not use them? And whatever fits you I must say that C++'s STL vector is great for that kind of things.

//Faux pas intended.

sepehr · Member Joined: 04 Oct 2006 Posts: 15 Location: Karaj

Thanks so informative,and another thing,suppose that i have saved 100000 names in a text file,now i wanna sort the names and resave it,what do you suggset me to do?

Johnny_Bit · Administrator Joined: 15 Jun 2003 Posts: 397

Hmm.. 2MB file with names, and you want to sort it? When you get to big numbers of data records it's way better to use specialized DB. I know it's way around the problem, but that's just how the things roll among Lazy ones.

Besides how would you achieve that kind of sort with StringList? I (only if I was forced to do so) would use list of pointers to packed records containing interesting data and use quick sort or whatever is appropriate for the task to do it as fast as possible on List elements.

Once you get to the dark side of Pointer Magic you won't ever go back.