Am 27.02.2014 13:37, schrieb Sven Barth:
Am 27.02.2014 12:12, schrieb Joao Morais:
Em 25/02/14 05:14, Sven Barth escreveu:
A generic is by definition not a fully existant type.
Plans to include generics as a real type for class attributes?
Something like the Java world:
generic TMyGeneric<T: TMyType> <<-- this is the real type
specialize TMyGeneric<TSomeDescendantType> <<-- only for type
safety, discarded after compiling
No, because generics in FPC/Delphi work more like templates in C++
than generics in Java/.Net (in these two it works, because of their
"everything is an object" approach, we don't have that in Pascal).
Addendum: this does not exclude the compiler from trying to optimize
this if the type parameter is indeed a class type. But this will be
transparent for the user and will have a few restrictions. It does
however not change that generics aren't full types.
Regards,
Sven
_______________________________________________
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
