Hello,
i am converting a big Delphi project a part of uses a lexical parser. It is dependent on the Copy function which in Delphi is declared:

function Copy(S; Index, Count: Integer): string;

and in FPC it is:

function Copy(const s: string; FromPosition, ToPosition : integer): String;

Why there are different declarations? I see that the FPC variant is used in a lot of places and it is not likely that it will be changed to be compatible with Delphi.

Thanks to all.

As far as I know, The Delphi variant is used also to copy dynamic arrays, possibly also variant arrays. The above function is a dummy declaration, as found in the documentation - because in reality it is handled by internal system functions (you can search for _copy, _copyvar _objCopy etc. in the system unit of delphi).

However, for strings, the behaviour should be the same.

For dynamic arrays, I don't think FPC has a similar function.

Michael.

For dynamic arrays, I don't think FPC has a similar function.

It has.