> On Nov 6, 2018, at 8:21 PM, Sven Barth via fpc-pascal
> <fpc-pascal@lists.freepascal.org> wrote:
>
> First of I'm not a fan of adding support for constants, mainly because it
> will definitely not help parsing of inline specializations in mode Delphi
> which are going to be annoying enough already.
Can you give an example? There’s lots of ways generics can be used and I tested
in only a few.
This is a very important improvement because it allows us to extend static
arrays in ways we haven’t been able to do before. Unless I missed something
huge it seems like a simple thing to implement (see the minor changes I made in
a single unit).
>
> That said: even if we do add it, then only if a generic constant parameter is
> designated as such with "const N" in the generic declaration instead of
> merely "N", so that the compiler does not assume it's a type.
Why is this preferable? If you tried to pass a type for a constant in a
specialization then you’d probably just get a type error which is easy to
catch. Generics in FPC are already very verbose (“specialize" keyword is
exhaustingly long) but adding “const” is at least a small cosmetic change in a
single location.
Regards,
Ryan Joseph
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