Will fpc support generic record declarations like this:

type
   generic TFixedKeyNode<KeySize> = record
     key: array[0..KeySize-1] of char;
     value: dword;
   end;

In other word the type is not parameterized by another type but by an integer used to define the upper limit of an array.

I am thinking of trying to use generics to implement the hashtable with fixed size keys for the k-nucleotide benchmark:
http://shootout.alioth.debian.org/gp4/benchmark.php?test=knucleotide&lang=all

Vincent

Op Wed, 20 Dec 2006, schreef Vincent Snijders:

Basically, isn't this similar to a schema type like you have in Extended Pascal?

Daniël

No idea. I have absolutely no knowledge about Extended Pascal. Can you give a link which describes that?

Vincent

Free Pascal seems to support macros (I did not try yet): http://www.freepascal.org/docs-html/prog/progse5.html

With this compile-time variable typedefs should be doable.

-Michael

Op Wed, 20 Dec 2006, schreef Vincent Snijders:

http://www.gnu-pascal.de/gpc/Schema-Types.html

Daniël

Aren't those automatically dynamic?

Op Wed, 20 Dec 2006, schreef Marco van de Voort:

What do you mean with dynamic? Dynamic memory management: no, static.

Daniël

Yes, that is what I meant. So just to be clear: you can create a schema type on the stack? Or nest it inside a record, and it remains a single record?

Op Wed, 20 Dec 2006, schreef Marco van de Voort:

Yes, confirmed, and if you blockwrite the record (if that is possible in GPC), you write the schema to disk.

Daniël

No. Generics are more like using a macro when defining a type.

So a ":=" copies the memory and not a pointer and they are passed by
value into a procedure.

-Michael

I think you cut too much context. To which question does this give an answer?

Vincent

(Don't you see the link to the message I answered to in the message tree with your Newsgroup viewer ?)

The question was:

Aren't those automatically dynamic?

So the answer is no, as they are not pointers (like instances of Classes).

-Michael