@property - take it behind the woodshed and shoot it?
sclytrack
sclytrack at shorter.com
Sun Jan 27 02:30:40 PST 2013
On Thursday, 24 January 2013 at 18:38:00 UTC, Adam D. Ruppe wrote:
> Thinking about it, this isn't quite a full circle. It does
> improve a bit.
>
> If we aren't going dip21, how about:
>
> ===
>
> Everything stays the way it is now, except:
>
> * if a @property is called with parens, they always apply to
> the return value
>
> * -property hopefully dies.
>
> ===
If this means keeping the writeln = ""; then vote++. I've got no
issues
with the property syntax for methods. I actually want them. Why
should properties only get the shorter syntax?
>
>
> I don't really like it, it leaves a number of problems
> behind... but that would be an improvement on the status quo. I
> don't hate it.
>
>
> So:
>
> alias void delegate() Callable;
>
> Callable nonprop();
> @property Callable prop();
>
> Callable returned = nonprop; // ok, the parens are optional
> Callable returned = nonprop(); // ok, nonprop() just calls
> nonprop like any other function
>
> Callable returned = prop; // ok, no parens still calls, just
> like before
> Callable returned = prop(); // NOT GOOD: the () applies to the
> Callable (which returns void), not prop, because prop has
> @property
>
> BTW
> nonprop()(); // calls the Callable (this expression returns
> void)
> prop()(); // nonsense (prop() returns void, which is not
> callable)
>
> ---
>
> int nonprop();
> @property int prop();
>
> int returned = nonprop; // fine, optional parens
> int returned = nonprop(); // fine
>
> int returned = prop; // fine, we just call prop
> int returned = prop(); // NO GOOD: the () always applies to the
> return value, which in this case is int, which is not callable
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