Daniël Mantione wrote:
Op Tue, 23 Jan 2007, schreef Luiz Americo Pereira Camara:
Ale? Katona wrote:
I agree. I'm starting to feel sick of all the compat crap you guys put
up with playing the bitch of delphi. The problem is that now delphi is
the bitch of .net so I think wisest would be to implement 100% compat up
to delphi 7 and be done with it. Then just document the fact and point
people to mode objfpc and our new stuff.
This makes me remenber of copying weird behaviors of Delphi. As an example see
the code:
AList:=TStringList.Create;
with AList do
begin
writeln('Set a string with space (aaaa;bb bb;cccc) to DelimitedText');
DelimitedText:='aaaa;bb bb;cccc';
writeln('Count: ',Count);
writeln('Delimited text: ',DelimitedText);
writeln('Strings: ');
for i:= 0 to Count - 1 do
writeln(' ',Strings[i]);
Destroy;
end;
Output:
Set a string with space (aaaa;bb bb;cccc) to DelimitedText
Count: 4
Delimited text: aaaa;bb;bb;cccc
Strings:
aaaa
bb
bb
cccc
The space is used as a hardcoded delimiter being necessary to enclose with ".
This limits the use of DelimitedText as a generic approach since is necessary
to preprocess the strings being added though DelimitedText.
The argument to keep such behavior is compatibility but there will be always
differences when porting code and the programmer must be aware. What is
necessary is to document the differences. So in resume i think that fpc must
not follow strictly Delphi, and in some situations, where appropriated, fpc
can/must do things different/better than Delphi.
Yes, but unless it is clearly a Delphi bug, it is better to keep the
Delphi compatible procedure or class and write a new clean one. Wether
something is a bug or intended behaviour usually becomes clear after
reading the the documentation.
Ok. Apart from the Delimiter issue, i've heard some complaints about the
design of TStringList that would not be scalable etc (a quote of a email
sent to fpc-devel below). Maybe is time to add to fpc a new class to
store strings, fixing the design flaws? Anyone already has such a base?
Luiz
Michael Van Canneyt wrote:
> > The purpose of Customsearch is to sort the list once using a custom
> > sorting algorithm.
>
> That reduces its usefulness, and why I said it's a broken design :) .
Well, it fits with the rest of TStringList then :-)
Seriously, I wouldn't bother using TStringList. It's position in the VCL and
Delphi compat and its fundamental flaws make it too difficult to
enhance/improve.
(hinting on the scaling problems, the delimited functions always using space as
a
separator etc)
Marco van de Voort
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