It seems it is not possible to use a conformant or open array to operator overloading, ie:
operator + ( const s1: array[n1..m1: Integer] of char; const s2: array[n2..m2: Integer] of char ) = ADD : Str255;
operator + ( const s1: array of char; const s2: array of char ) = ADD : Str255;
both fail with "operator must have two arguments", presumably because the conformant/open array passes hidden arguments for n1,m1 or High(s1) etc.
Is the error actually correct, or is the error just erroneously complaining about the hidden arguments (since there are two real arguments).
If the latter, it'd be nice to get this fixed since it would make porting of short strings a lot easier. If the former, are there any plans to remove this restriction?
Failing his, if I have six or seven string types (of different lengths), and I make an operator + and = for each pair, that is n**2 for each (perhaps 49 + operators and 49 = operators). Would doing this be stretching the compiler beyond it's design or would it be a perfectly reasonable thing to do?
Also, I noticed that := cannot be overloaded as an operator. This would also be a handy addition, although quite possibly it'd have to be a special case.
I did check the Todo list on the web page but did not see anything related to this.
Thanks for any advice, Peter.