Am Sa., 10. Nov. 2018, 10:06 hat Ryan Joseph
geschrieben:
> Should’t this work? This would be a good way to set default record values
> but it doesn’t seem to be supported.
>
TMyRecord is not yet completely parsed. There could be another field
located behind the "default" constant. Thus using
Should’t this work? This would be a good way to set default record values but
it doesn’t seem to be supported.
type
TMyRecord = record
public
a: integer;
b: string;
const
default:
Am 09.11.2018 um 03:13 schrieb Ryan Joseph:
>
>
>> On Nov 9, 2018, at 4:28 AM, Florian Klämpfl wrote:
>>
>> I like the idea of const in generics, but it needs serious cleanup when it's
>> working:
>> - commit messages like "first commit" are useless
>
> Those are for github so I could share
> On Nov 10, 2018, at 7:16 PM, Florian Klämpfl wrote:
>
> This does not prevent you from creating proper commits, especially as the
> patch series from github could be easily
> applied later on to fpc's main repository.
I’ll assume these commits could be public some day then. I originally
Am Sa., 10. Nov. 2018, 12:44 hat Ryan Joseph
geschrieben:
> Not quite understanding how that’s not entirely parsed by the time you
> assign outside of the record. Even so I would expect it to copy what the
> const was able to capture, fully parsed or not.
>
It's not entirely parsed by the time
This also fails.
type
TMyRecord = record
public
a: integer;
b: string;
end;
const
TMyRecord_Default: TMyRecord = (a: 100; b: 'foo');
var
r: TMyRecord = TMyRecord_Default;
> On Nov 10, 2018, at 4:55
Am 09.11.2018 um 05:20 schrieb Ryan Joseph:
>
>
>> On Nov 9, 2018, at 4:28 AM, Florian Klämpfl wrote:
>>
>> I like the idea of const in generics, but it needs serious cleanup when it's
>> working:
>
> Question: should other consts besides integers be allowed? I don’t think it
> makes sense
> On Nov 10, 2018, at 7:22 PM, Florian Klämpfl wrote:
>
> If you "export" a generic taking a const from a unit, this info has to be
> stored in the ppu.
Can you show a test case I could use to see where this is triggered in the
compiler? I don’t even know where to begin looking.
Regards,
Not quite understanding how that’s not entirely parsed by the time you assign
outside of the record. Even so I would expect it to copy what the const was
able to capture, fully parsed or not.
Also, why does it work to do
begin
r := TMyRecord.default;
in the main block?
> On Nov 10, 2018,
Am 10.11.2018 um 13:20 schrieb Ryan Joseph:
>>>
- the compiler contains already a type called tgenericdef
>>>
>>> I think I changed that name in the last commit. Btw I made all those types
>>> because I didn’t want to populate the main types like ttypesym with extra
>>> bytes but I don’t
Am Sa., 10. Nov. 2018, 14:47 hat Ryan Joseph
geschrieben:
>
>
> > On Nov 10, 2018, at 7:22 PM, Florian Klämpfl
> wrote:
> >
> > If you "export" a generic taking a const from a unit, this info has to
> be stored in the ppu.
>
> Can you show a test case I could use to see where this is triggered
On Thu, Nov 8, 2018 at 11:50 PM Ryan Joseph
wrote:
> Question: should other consts besides integers be allowed? I don’t think
> it makes sense personally to use strings, floats or sets but maybe I’m
> wrong.
>
As a daily FPC user there's nothing I find more annoying than compiler
restrictions
On Sat, Nov 10, 2018 at 9:03 PM Ryan Joseph
wrote:
> Not sure how default fields in generics help here. I just thought it would
> be nice if FPC supported this so we can init records at compile time
> easier. I’d prefer default struct fields like C++ has but typed const
> defaults would be an
On Sat, Nov 10, 2018 at 4:06 AM Ryan Joseph
wrote:
> Should’t this work? This would be a good way to set default record values
> but it doesn’t seem to be supported.
Personally I think the answer here is keep working on your new/alternate
implementation of default field functionality! It's a
> On Nov 11, 2018, at 6:51 AM, Ben Grasset wrote:
>
> Personally I think the answer here is keep working on your new/alternate
> implementation of default field functionality! It's a missing puzzle piece
> for FPC generics in many ways.
>
Not sure how default fields in generics help here.
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