mailinglists at geldenhuys.co.uk
Sat Sep 2 11:59:21 CEST 2017
On 2017-09-02 09:38, Ryan Joseph wrote:
> It separates the code (which is nice) but then gives you an annoying
> extra step of typing hook.XXX for every method.
I don't have that problem, and I use interfaces extensively. Like
multi-threading, Interfaces are an advanced feature of the Object Pascal
language. Unfortunately, many ways that it can be used incorrectly too.
When I use interfaces, I work with the object instance only via an
Interface reference. The interface that represents the functionality I
need. I also prefer not to use reference counting with interface, but I
definitely see a use for reference counting - but again, never mix the
two in the same application. I also use interface delegation, which
reduces code a lot.
Probably the best example I can think of off the top of my head that
shows Interface usage very well is a set of 8 articles (with code)
implementing Model-View-Presenter (MVP). I don't know where I originally
code the articles and code from, but I can email you [in private] what I
have. She shows prenty of ways using interfaces.
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
My public PGP key: http://tinyurl.com/graeme-pgp
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