[fpc-devel] Status of Generic Functions

[Sven Barth]

On 19.05.2012 12:58, Kornel Kisielewicz wrote:
> On Sat, May 19, 2012 at 10:50 AM, David Ballesteros<dballesg at gmail.com>  wrote:
>> Hi,
>>
>> I'm trying to port a C/C++ SDK from an application to a Pascal Wrapper using
>> FPC 2.7.1. from SVN.
>>
>> I have a templated fucntion on the C++ code that I will like to translate, I
>> know Generic classes are more or less working on the FPC SVN.
>>
>> To my surprise this two lines of code doesn't produce any compiling errors:
>>
>> type
>>    generic test<M,N>   = procedure( m1 : M; n1 : N);
>>    generic test2<M,N>  = function( m1 : M; n1 : N): Boolean;
>>
>> But how to write the implementation?
>>
>> This means the FPC parser understand it but they will not compile?
>
> That's not surprising at all. What you are doing here is defining a
> generic of a procedural variable type. Hence this is only useful to
> specialize to a given type (which is useful in some generic classes,
> for example to define a sorter function in a linear container). That
> is a completely different situation than defining a generic procedure
> itself. That is as yet (as far as I know) not possible.

Completely correct. Only one thing to add from my side:

I hope to start the implementation of generic functions/methods in this 
year.

Regards,
Sven