[fpc-pascal] Re: TLinkedList

[michael.vancanneyt at wisa.be]

On Wed, 15 Feb 2012, Sven Barth wrote:

> Am 15.02.2012 14:09, schrieb michael.vancanneyt at wisa.be:
>> 
>> 
>> On Wed, 15 Feb 2012, Sven Barth wrote:
>> 
>>> Am 14.02.2012 22:28, schrieb Marco van de Voort:
>>>> In our previous episode, Sven Barth said:
>>>>>> Afaik it was the main reason to implement generic constraints in
>>>>>> Delphi (like
>>>>>> .NET)?
>>>>> 
>>>>> Constraints allow the compiler to infer further information on the
>>>>> given
>>>>> types to improve e.g. type checking when parsing the generic,
>>>> 
>>>> Exactly. You e.g. know that the unspecialized generic is already
>>>> meant for
>>>> reference types, from line one.
>>>> 
>>>>> but they won't magically allow the compiler to not duplicate code (in
>>>>> theory it would be possible to do something like Java's generics for
>>>>> cases
>>>>> where the constraints are for descendants of TObject or IInterface,
>>>>> but in
>>>>> my opinion the tradeoffs (increased compiler complexity) are not worth
>>>>> it).
>>>> 
>>>> Yeah, that is typical. If it is not used inside the compiler it is
>>>> unoptimized :-)
>>>> 
>>>> Maybe redo cclasses with generics?
>>> 
>>> That wouldn't change that much... the performance of specialized
>>> generics isn't that different from "normal" code.
>> 
>> I tested that. It's about 10% slower.
>
> Compile time or runtime?

Runtime.

Michael.