On 11/24/2012 09:06 AM, Jonas Maebe wrote:
On 24 Nov 2012, at 17:55, bsquared wrote:
I followed the example on the wiki page, but the compiler disallowed both of
the following attempts.
On which wiki page did you find this code?
The code on the wiki does conform to your helpful comments.
http://wiki.freepascal.org/extended_class_syntax
{$mode objfpc}{$H+}
TExample1 = class
private
const
CN_CONST = 'EXAMPLE CONSTANT';
published
property Example: string
read CN_CONST;
end;
Error: Unknown class field or method identifier "CN_WELCOME"
Properties can only read via methods or fields, not via constants. A constant
is not the same as a field. Does Delphi allow the above?
TExample2 = class
private
fExample: string;
const
CN_CONST = 'EXAMPLE CONSTANT';
published
property Example: string
read fExample
write fExample
default CN_CONST;
end;
Error: Property can't have a default value
Properties that return strings cannot have a default value. Only immediate
values that moreover fit in 32 bits can be used as default value, due to the
format of the RTTI. See http://bugs.freepascal.org/view.php?id=19199 for more
information.
Also, What is the static keyword on the class method?
class procedure SetSomeClassVar(const AValue: TSomeType); static;
It results in the class method not getting a hidden "self" parameter, which
otherwise contains the class reference on which the class method was invoked.
Jonas_______________________________________________
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Thank you for the clarifications.
--
Regards,
Brian
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