[fpc-devel] Re: Comparison FPC 2.6.2 - Kylix 3

[Sven Barth]

Am 04.03.2013 14:57, schrieb Martin Schreiber:
> On Monday 04 March 2013 14:37:40 Daniël Mantione wrote:
>
>> Originally the compiler was doing the candidate selection with a simple
>> loop through the parameters that took the first suitable match. When the
>> type conversion matters became more complex the "Unable to determine
>> overloaded procedure" error became increasingle annoying.
>>
>> At some point I did redesign it with scoring system: Each candidate that
>> is compatible gets assigned a score how well the overloaded procedure
>> matches the parameters. The best match is selected.
>>
>> At that point, the compiler became highly intelligent in finding the
>> correct overloaded procedure/operator, but the amount of computing power
>> involved with overloading went up: Instead of selecting the first
>> candidate, we need to compute the score for all candidates. This even
>> requires floating point arithmetic.
>>
> This improvement is very visible. I had big problems to make MSEide Delphi
> compatible because Delphi many times reported "Unable to determine overloaded
> procedure" where FPC has no problems. I think this is worth a slow down of
> compile time. :-)
Can we have this statement printed out and signed by you, please :D

Regards,
Sven