String Mixins & Compile Time Evaluation

[Travis Boucher]

Don wrote:
> Travis Boucher wrote:
>> I've been playing with string mixins, and they are very powerful.
>>
>> One thing I can't figure out is what exactly can and cannot be 
>> evaluated at compile time.
>>
>> For example:
>>
>> ----
>> char[] myFunc1() {
>>     return "int a = 1;";
>> }
>>
>> char[] myFunc2() {
>>     char[] myFunc3() {
>>         return "int b = 2;";
>>     }
>>     return myFunc3();
>> }
>>
>> void main() {
>>     mixin(myFunc1());
>>     mixin(myFunc2());
>> }
>> ----
>>
>> myFunc1() can be used as a string mixin.
>> myFunc2() can't be.
> 
> I think you're using an old version of DMD. It's been working since 
> DMD1.047. Please upgrade to the latest version, you'll find it a lot 
> less frustrating.
> The bottom of "function.html" in the spec gives the rules.
> Though it says nested functions aren't supported, but they are.

Yeah, I am running 1.020 with gdc (freebsd default for gdc package).  I 
found a few work arounds, just trying to see what can be done.

For now I'll take it as a work in progress and once I start doing 
anything real with it I'll upgrade to the latest version of dmd.

Thanks,
Travis Boucher