I dun a DIP, possibly the best DIP ever

[Steven Schveighoffer]

On 4/24/20 12:22 AM, Walter Bright wrote:
> On 4/22/2020 6:18 AM, Steven Schveighoffer wrote:
>> int double_int(int val) { return 2 * val; }
>>
>> T double_int(T val) { return val; }
>>
>> void double_ints(alias pred, T... args) {
>>     pred(double_int(args)...);
>> }
> 
> This can be done with the array syntax proposal using UFCS:
> 
> void double_ints(alias pred, T... args) {
>      args.pred();
> }

What's the array syntax proposal? The above seems not to invoke 
double_int at all.

-Steve