DIP 1016--ref T accepts r-values--Community Review Round 1

[Dgame]

On Friday, 20 July 2018 at 10:31:48 UTC, Seb wrote:
> On Friday, 20 July 2018 at 10:08:03 UTC, Dgame wrote:
>> On Friday, 20 July 2018 at 09:39:47 UTC, Nicholas Wilson wrote:
>>> On Friday, 20 July 2018 at 09:03:18 UTC, Dukc wrote:
>>>> appending something (like .byRef or byRef!long, the latter 
>>>> making an implicit type conversion)
>>>
>>> That can't work: either it returns an expired stack temporary 
>>> (*very* bad), or allocates with no way to deallocate (bad).
>>
>> What about something like this?
>>
>> ----
>> import std.stdio;
>>
>> ref T byRef(T)(T value) {
>>     static T _val = void;
>>     _val = value;
>>
>>     return _val;
>> }
>>
>> void foo(ref int a) {
>>     writeln("A = ", a);
>> }
>>
>> void main() {
>>     foo(42.byRef);
>>     foo(23.byRef);
>> }
>> ----
>
> That can't work, consider e.g.:
>
> foo(10.byRef, 20.byRef); // calls foo with (20, 20)
>
> https://run.dlang.io/is/lazeu2

True.. But this could work (but is way more uglier): 
https://run.dlang.io/is/rKs2yQ