[fpc-pascal] Const params question

[Michael Van Canneyt]

On Wed, 11 Oct 2017, Marcos Douglas B. Santos wrote:

> On Wed, Oct 11, 2017 at 7:01 AM, Michael Van Canneyt
> <michael at freepascal.org> wrote:
>>
>>
>> On Wed, 11 Oct 2017, Ryan Joseph wrote:
>>
>>> If you declare a parameter as const does that effectively behave like
>>> passing by reference?  I have some performance sensitive functions that
>>> take records as arguments and I don’t want copying to the stack so I’ve
>>> been using @ but maybe const is just as good?  Thanks.
>>
>>
>> No, you need constref then.
>
> Is constref compatible with Delphi?

Delphi has recently introduced some annotation for the same purpose.

As usual, they chose to do something different than what FPC did.

Michael.