class extensions

[Bill Baxter]

Chris Nicholson-Sauls wrote:
> Bill Baxter wrote:
>> kris wrote:
>>> Lutger wrote:
>>>> kris wrote:
>>

>> So my feeling is that for this to be more useful:
>> 1) Extension members should be marked as such and *only* be allowed to 
>> be called with member syntax.  Those not marked as such will not be 
>> allowed to be called with member syntax.  (if you need both then it's 
>> easy enough to write a trivial forwarding function.)
> 
> Its not a bad idea.  The "trivial forwarding function" should be 
> inlineable anyhow.  Maybe a "context" parameter?  Something like:
> size_t indexOf : T[] array (T) (T elem) { ... }
> 
> Where the (':' param) after the function name creates the 
> context-param.  Other examples:
> 
> ulong area : IShape shp () { ... }
> 
> void unique : inout T[] array (T) () { ... }
> 
> 
> Its just a random on-the-spot idea.
> 

Maybe even just use a semi-colon instead of comma in the arg list?
   size_t indexOf(T)(T[] array; T elem) { ... }
   ulong area (IShape shp;) { ... }
   void unique (ref T[] array; T) () { ... }

--bb