How to insert code in place with templates/mixins?

[rempas]

On Monday, 20 December 2021 at 18:06:32 UTC, rempas wrote:
> On Monday, 20 December 2021 at 11:58:58 UTC, Tejas wrote:
>>
>> Ehh, it still fails; should've explicitly put the length of 
>> the array and the `extern (C)` in `main`
>>
>> ```d
>> module demo;
>>
>> [ ... ]
>>
>> extern(C) /+added this because you used -betterC+/ void main() 
>> {
>>
>>     while (true) {
>> 		mixin(add_char!'%');
>> 		mixin(add_char!'$');
>>     }
>> }
>> ```
>
> Thanks! A mixin is not necessary, it will do the same thing 
> without it.

Well it seem that it actually needs it...