[fpc-pascal] Interface syntax: Is possible don't use specialize in mode objfpc?
Sven Barth
pascaldragon at googlemail.com
Thu Jul 16 22:26:43 CEST 2015
On 16.07.2015 19:21, Michael Van Canneyt wrote:
> The whole generics mess that Delphi made goes completely against the
> Pascal dictum that you must declare something before you can use it.
>
> To me, the above verbose construction makes absolute sense. It has been
> so since day 1:
>
> PRecord = ^TRecord;
> TRecord = record
> a : integer;
> next : PRecord;
> end;
For things like the following you can't use the "declare before use"
paradigm however:
=== code begin ===
type
generic ITest<T> = interface
function Foo: T;
end;
generic TTest<T> = class(TInterfacedObject, specialize ITest<T>)
function Foo: T;
end;
=== code end ===
Regards,
Sven
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