Re: Why can't I assign a mixin to an alias?

[Mihail-K via Digitalmars-d-learn]

On Friday, 10 June 2016 at 22:38:29 UTC, Dechcaudron wrote:
I have the following code:
private string getVariableSignalWrappersName(VarType)()
{
        return VarType.stringof ~ "SignalWrappers";
}

void addVariableListener(VarType)(int variableIndex, void 
delegate(int, VarType))
{
	alias typeSignalWrappers = 
mixin(getVariableSignalWrappersName!VarType);
}

On compilation, the following error is issued:
Error: basic type expected, not mixin

Why should it be like that? I believe the compiler should not 
impose restrictions on what mixins can or cannot do :/

I'm no expert, but this looks like a grammar issue more than 
anything else. You can work around it by moving the alias 
declaration into the mixin.

mixin("alias typeSignalWrappers = " ~ 
getVariableSignalWrappersName!VarType ~ ";");