On Mon, 1 Jul 2019, Ondrej Pokorny wrote:
On 01.07.2019 15:57, Ryan Joseph wrote:
Yes, I’ve made a patch to allow overriding the actual property
(https://bugs.freepascal.org/view.php?id=35772).
Very good! Just a short question: does your solution allow one overload
without array indexes? It is very useful as a for-in enumerator of the
array property:
TTest = class
public
// ...
property StringArray[Index: Integer]: string read GetString;
property StringArray: TTestObjectEnumerator read GetString;
end;
I really don't think this should be allowed. You can perfectly do
property EnumStringArray: TTestObjectEnumerator read GetString;
For S in Mytest.EnumStringArray
Typing this extra letters is not going to hurt.
Your proposal violates the rule that the resulting type of an expression must
be known when evaluating it.
with
Mytest.StringArray
it is not clear what the Mytest.StringArray should evaluate to.
It can be 2 things:
- An array, in which case an index is needed.
- An enumerator.
The compiler does not know what to choose, except by looking at the context and
that is definitely not OK.
Michael.
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