On Thu, 15 Jul 2010 09:16:47 -0400, dsimcha <dsim...@yahoo.com> wrote:

Once property syntax is fully enforced (not necessarily recommended) will it be possible to overload properties against non-properties? My use case is that I'm thinking about API improvements for my dflplot lib and one thing that I would really like is to give a fluent interface to everything to further cut back on the amount of boilerplate needed to generate simple plots. For example:

Histogram(someData, 10)
    .barColor(getColor(255, 0, 0))
    .histType(HistType.Probability)
    .toFigure.title("A Histogram")
    .xLabel("Stuff").showAsMain();

The problem is that I also want things like barColor and title to be settable
via normal property syntax, using the equals sign.  Right now, this "just
works" because D's current non-analness about enforcing @property-ness is
awesome 99% of the time even if it leads to a few weird corner cases. Will there be a way to express such an interface to be provided (calling a setter as either a member function or a property at the user's choice) once @property
is fully implemented?

I would say no. A property is not meant to be a function or vice versa. Also, a property setter should either return void or the type it's setting.

I would suggest the following model:

@property int x(int i);
typeof(this) setX(int i);

This looks good IMO when used:

int m = c.x = 5;
c.setX(5).setY(6);

I used this in tango.sys.Process to set various parameters for process creation.

-Steve

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