Showing posts with label system. Show all posts
Showing posts with label system. Show all posts

Wednesday, March 27, 2019

If you must to create quick and dirty quasi database system



SAVE / LOAD procedure:

procedure TForm1.Button1Click(Sender: TObject);
var strl : TStringlist;
begin
//SAVE
strl := TStringList.Create;
strl.Add(Edit1.Text);
strl.Add(Edit2Text);

strl.Add(Edit3.Text);

strl.Add(Edit4.Text);

//etc...
strl.SaveToFile('C:\test.txt');
strl.Free;
//LOAD
strl := TStringList.Create;
strl.LoadFromFile('C:\test.txt');
Edit1.Text := strl.strings[0];
Edit2.Text := strl.strings[1];
Edit3.Text := strl.strings[2];
Edit4.Text := strl.strings[3];
//etc...
strl.Free;
end;

//You can use this procedure for C:\test1.txt...C:\test[FileMaxCount].txt
//Same procedure, but different text file name.
//All data will be saved as strings in sequential order.
//One textual file presents one row of data, if you have 1000 rows of data, than you have 1000 textual files.
//That system is very fast, faster than any CSV file with all data.
//You don't need to search for data loading all data, but only data that contents particular textual file.
//That system save resources and memory.
//It is not very well solution, but is quick and dirty one.
//Another "benefit" of that system is the lack of any delimiters in that files, except CRLF.