Why does this mixin fail to compile?

[ryuukk_]

On Monday, 1 July 2024 at 10:20:25 UTC, drug007 wrote:
> On 01.07.2024 12:39, ryuukk_ wrote:
>> On Monday, 1 July 2024 at 09:29:50 UTC, Dennis wrote:
>>> On Monday, 1 July 2024 at 09:25:39 UTC, ryuukk_ wrote:
>>>> This simple mixin fails to compile, anyone know why?
>>>>
>>>> ```D
>>>> mixin implement;
>>>>
>>>> mixin template implement() {
>>>>     mixin("struct _gen(T) {");
>>>>     mixin("}");
>>>> }
>>>
>>> A string mixin must form a complete declaration / statement / 
>>> expression / type, so you can't end on an open brace.
>> 
>> this is sad, how i am supposed to do a foreach inbetween?
>> 
>> ```D
>> mixin implement!TEST;
>> 
>> mixin template implement(stuff) {
>>      mixin("struct _gen(T) {");
>> 
>>      // pseudo code
>>      static foreach(args)
>>          mixin("stuff");
>> 
>>      mixin("}");
>> }
>> 
>> void main(){}
>> ```
>
> No problem, make a full string then mixin it.

Your "no problem" = lot of string concatenation therefore slower 
and memory hungry, i have no desire to do that