new properties for basic types

[via Digitalmars-d-learn]

On Tuesday, 15 July 2014 at 05:26:57 UTC, Philippe Sigaud via 
Digitalmars-d-learn wrote:
> @property allows you to call a function without the parenthesis 
> (), to
> imitate a field in a struct or class.

That was the original idea, but today the situation is that for 
all argument-less method calls (and UFCS calls) the parentheses 
are optional, but for functions with `@property` parentheses 
_mustn't_ be used. This was mainly done to avoid an ambiguity 
when the function returns something that is itself callable, but 
also is useful to keep APIs stable: If you mark a method as 
`@property`, you can replace it by a member variable and existing 
code will not break (but needs to be recompiled, of course).