[fpc-pascal] class property accessor static

[Maciej Izak]

2017-02-07 13:51 GMT+01:00 Mattias Gaertner <nc-gaertnma at netcologne.de>:

> Why is that "more handy"? "static" does not have a Self. That
> is less handy, isn't it?
>

by "handy" I mean usage of "class properties" instead of "static methods".


> I can't follow you here. Are we still talking about why Delphi choose
> static instead of normal?
>

"class property" is used for code where class instance (nor assign to meta
class) is not needed. Some variance/idea of singleton pattern. TFoo might
be used as namespace:

===code begin===
var
  Foo: TFooClass; // or Foo: TFoo
begin
  WriteLn(Foo.F);
end;
===code end===

for regular "property" with "class methods" you need something like this:

===code begin===
var
  Foo: TFooClass;
begin
  Foo := TFoo;
  WriteLn(Foo.E);
end;
===code end===

and for normal property:

===code begin===
var
  Foo: TFoo;
begin
  Foo := TFoo.Create;
  WriteLn(Foo.D);
end;
===code end===


> True.
> OTOH you loose some possibilities.
>

True.

-- 
Best regards,
Maciej Izak
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