Re: [fpc-pascal] Generic compiler error
Am 23.10.2017 14:37 schrieb "Maciej Izak" : 2017-10-23 14:33 GMT+02:00 Sven Barth via fpc-pascal < fpc-pascal@lists.freepascal.org>: > Don't know. Only time will tell. > Did we have new team member? I would like to meet him! ;) Sadly time isn't around that often. :P (and why do you assume that it's a he? :P) Regards, Sven ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
2017-10-23 14:33 GMT+02:00 Sven Barth via fpc-pascal < fpc-pascal@lists.freepascal.org>: > Don't know. Only time will tell. > Did we have new team member? I would like to meet him! ;) -- Best regards, Maciej Izak ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
Am 23.10.2017 12:55 schrieb "Marcos Douglas B. Santos" : On Mon, Oct 23, 2017 at 6:50 AM, Sven Barth via fpc-pascal wrote: > Am 23.10.2017 08:29 schrieb "Marco van de Voort" : > > In our previous episode, Sven Barth via fpc-pascal said: >> >> Type aliases are currently not supported in mode Delphi. In mode ObjFPC >> they might work, but I'm not sure about that either... >> >> That said I also don't see the use of type aliases for generics... > > How about a simple > > > type = anotherunit.; > > ? > > That is often what I use type aliases for, aliasing code that has been > factored out of an unit back in. > > > Okay, that's an acceptable use case ^^' So, can we have this in the next version? :) Don't know. Only time will tell. Regards, Sven ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
On Mon, Oct 23, 2017 at 6:50 AM, Sven Barth via fpc-pascal wrote: > Am 23.10.2017 08:29 schrieb "Marco van de Voort" : > > In our previous episode, Sven Barth via fpc-pascal said: >> >> Type aliases are currently not supported in mode Delphi. In mode ObjFPC >> they might work, but I'm not sure about that either... >> >> That said I also don't see the use of type aliases for generics... > > How about a simple > > > type = anotherunit.; > > ? > > That is often what I use type aliases for, aliasing code that has been > factored out of an unit back in. > > > Okay, that's an acceptable use case ^^' So, can we have this in the next version? :) Best regards, Marcos Douglas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
On Sun, Oct 22, 2017 at 11:53 PM, Ryan Joseph wrote: > > >> On Oct 23, 2017, at 9:14 AM, Marcos Douglas B. Santos >> wrote: >> >> How do the same with generic classes, using mode delphi? > > I think you need to specialize then alias the specialize type. Why do you > want to make an alias for an untyped generic anyways? As Marco showed, to do this: type = anotherunit.; Best regards, Marcos Douglas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
On Mon, Oct 23, 2017 at 3:28 AM, Marco van de Voort wrote: > In our previous episode, Sven Barth via fpc-pascal said: >> >> Type aliases are currently not supported in mode Delphi. In mode ObjFPC >> they might work, but I'm not sure about that either... >> >> That said I also don't see the use of type aliases for generics... > > How about a simple > > > type = anotherunit.; > > ? > > That is often what I use type aliases for, aliasing code that has been > factored out of an unit back in. +1 That is I am talking about. Thanks. Best regards, Marcos Douglas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
Am 23.10.2017 08:29 schrieb "Marco van de Voort" : In our previous episode, Sven Barth via fpc-pascal said: > > Type aliases are currently not supported in mode Delphi. In mode ObjFPC > they might work, but I'm not sure about that either... > > That said I also don't see the use of type aliases for generics... How about a simple type = anotherunit.; ? That is often what I use type aliases for, aliasing code that has been factored out of an unit back in. Okay, that's an acceptable use case ^^' Regards, Sven ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
In our previous episode, Sven Barth via fpc-pascal said: > > Type aliases are currently not supported in mode Delphi. In mode ObjFPC > they might work, but I'm not sure about that either... > > That said I also don't see the use of type aliases for generics... How about a simple type = anotherunit.; ? That is often what I use type aliases for, aliasing code that has been factored out of an unit back in. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
Am 23.10.2017 04:14 schrieb "Marcos Douglas B. Santos" : Hi, In Pascal we can do this: type TXStream = TStream; Now, TXStream is just an alias to TStream. How do the same with generic classes, using mode delphi? TBar = TFoo; Type aliases are currently not supported in mode Delphi. In mode ObjFPC they might work, but I'm not sure about that either... That said I also don't see the use of type aliases for generics... Regards, Sven ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Generic compiler error
> On Oct 23, 2017, at 9:14 AM, Marcos Douglas B. Santos > wrote: > > How do the same with generic classes, using mode delphi? I think you need to specialize then alias the specialize type. Why do you want to make an alias for an untyped generic anyways? Regards, Ryan Joseph ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] Generic compiler error
Hi,
In Pascal we can do this:
type
TXStream = TStream;
Now, TXStream is just an alias to TStream.
How do the same with generic classes, using mode delphi?
TBar = TFoo;
Compile Project, Target: C:\temp\project1.exe: Exit code 1, Errors: 4
project1.lpr(25,18) Error: Identifier not found "T"
project1.lpr(25,19) Error: Type identifier expected
project1.lpr(25,20) Error: Error in type definition
project1.lpr(27,1) Error: This type cannot be a generic
My ENV is:
Lazarus 1.9.0 r56056M
FPC 3.1.1 r37505
i386-win32-win32/win64
Please, see an example below:
=== BEGIN ===
program Project1;
{$mode delphi}
uses
Classes;
type
IFoo = interface
['{5CA4AEC4-3875-4639-9975-AC2C201E0A98}']
function Value: T;
end;
TFoo = class(TInterfacedObject, IFoo)
private
FValue: T;
public
constructor Create(Value: T);
class function New(Value: T): IFoo;
function Value: T;
end;
TXStream = TStream; // OK
TBar = TFoo; // how solve this?
constructor TFoo.Create(Value: T);
begin
inherited Create;
FValue := Value;
end;
class function TFoo.New(Value: T): IFoo;
begin
Result := Create(Value);
end;
function TFoo.Value: T;
begin
Result := FValue;
end;
begin
Writeln(TFoo.New(1).Value);
Readln;
end.
=== END ===
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