Fallback 'catch-all' template functions

[Andrei Alexandrescu via Digitalmars-d]

On 9/3/16 7:29 AM, Manu via Digitalmars-d wrote:
> On 3 September 2016 at 11:38, Andrei Alexandrescu via Digitalmars-d
> <digitalmars-d at puremagic.com> wrote:
>> On 9/3/16 2:41 AM, Manu via Digitalmars-d wrote:
>>>
>>> On 3 September 2016 at 00:18, Xinok via Digitalmars-d
>>> <digitalmars-d at puremagic.com> wrote:
>>>>
>>>>
>>>> In the past, I have suggested using the "default" keyword to specify a
>>>> fallback function of this kind. I think it's a useful pattern for generic
>>>> algorithms that have optimized variants on specific types for
>>>> performance.
>>>>
>>>>    void f(T)(T t) if(isSomething!T) {}
>>>>    void f(T)(T t) if(isSomethingElse!T) {}
>>>>    void f(T)(T t) default {}
>>>
>>>
>>> It's an interesting idea... flesh out a DIP?
>>
>>
>> We're better off without that. -- Andrei
>
> Then we need a decent way to do this.

Use static if inside the function. The entire notion of "call this 
function if you can't find something somewhere that works" is 
questionable. -- Andrei