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?
> {$mode objfpc}{$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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