[fpc-devel] interfaces vs classes in dll

[Vincent Snijders]

Marc Weustink schreef:
> Vincent Snijders wrote:
>> Michael Van Canneyt schreef:
>>>
>>> I find classes more natural than interfaces. It 'just works'. Not so 
>>> with interfaces, because you must do a typecast every time.
>>>
>>> Compare
>>>
>>> Function GetPluginInterface : ISOmeThing;
>>>
>>> begin
>>>   X:=MyPluginObjectXYZ.Create;
>>>   Result:=X as ISomething;
>>> end;
>>>
>> This is then a weakness in the language. Because MyPluginObjectXYZ 
>> implements ISOmeThing and the compiler nows that, you should be able 
>> to write just
>>
>> Result := MyPluginObjectXYZ.Create;
> 
> Weakness ? I do this all the time in Delphi. No need for as
> 

I took Michael's example as a requirement, not an option for extra typing :-)

Vincent