[fpc-pascal] with in classes/records

Ryan Joseph ryan at thealchemistguild.com
Tue Sep 4 17:30:37 CEST 2018

> On Sep 4, 2018, at 7:15 PM, Sven Barth via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> Would you please stop thinking with the C operators? They are merely syntactic sugar and they don't exist by themselves. For this topic at least please stick to their full versions (in your example "rec := rec + 10") as that highlights better what the compiler needs to handle. In this case both the + *and* the assignment operator. 

Sorry, please bear with me.

I think this is just a precedence issue I raised. If TWrapper has a + operator then:

wrapper := wrapper + 1

should call the + operator, because base class takes precedence over the field num: integer. Correct? If TWrapper doesn’t have a + operator then:

wrapper := wrapper + 1 should resolve to wrapper.num := wrapper.num + 1


	TWrapper = record
		num: integer;
		property _default: integer read num write num; default;
		class operator + (left: TWrapper; right: integer): TWrapper;

	Ryan Joseph

More information about the fpc-pascal mailing list