change mixins

[grauzone]

retard wrote:
>> Granted, even if logging is disabled, the compiler will push the
>> arguments on the stack and call logInfo().
> 
> This is a case where a JIT compiler wins. The code runs equally fast 
> without the call at all and with logging turned off (dynamically). In 
> languages like D, the like has to be statically turned off unless 
> compilers have any new dynamic optimizations.

Can the JIT really do this optimization? It sounds as if it'd detect 
that the variable never changes, and generate code with that fixed value.