Writing/Creating files at compile-time

[cym13 via Digitalmars-d]

On Sunday, 9 August 2015 at 13:51:21 UTC, Andrei Alexandrescu 
wrote:
> On 8/9/15 5:07 AM, JDemler wrote:
>> We can read files at compile-time:
>>
>>    enum file = import(fileName);
>>
>> But we cannot write to a file or create files at compile time.
>>
>> Generating code at compile-time and mixing it in is fun but 
>> has a few
>> flaws.
>> It isn't debuggable, the generated code cannot be directly 
>> inspected (we
>> have to use pragma(msg, )) and it is not possible to manually 
>> tweak it.
>>
>> If we could generate source files (.d) at compile time and 
>> then import
>> them using mixins or something else, these problems can be 
>> dealt with.
>
> I think this is an interesting pursuit that closes the circle 
> on a number of issues, such as debuggability and compilation 
> speed of mixin code. -- Andrei

The moment this is added to D, we will have two complete 
languages in one: an interpreted one at compile-time and another 
at runtime.

While I find this interesting, I wonder wether this is  a good 
idea or not.