Mixin Expressions, can't evalutate string variable

[Tomek Sowiński]

Andrej Mitrovic napisał:

> I think this should work:
> 
> string s = "int x;";
> mixin(s);
> 
> void main()
> {
>     
> }
> 
> But I get:
> testtest.d(11): Error: argument to mixin must be a string, not (s)
> 
> I get a similar error with the template example from the docs:
> 
> template GenStruct(string Name, string M1)
> {
>     string GenStruct = "struct " ~ Name ~ "{ int " ~ M1 ~ "; }";
> }
> 
> mixin(GenStruct!("Foo", "bar"));
> 
> void main() { }
> 
> testtest.d(27): Error: argument to mixin must be a string, not (GenStruct)
> 
> 
> This is really weird, I swear it worked for me a couple of days ago. :s
> Maybe I accidentally modified a library file, so I'll have a look.
> Meanwhile can someone succesfully compile these?

template GenStruct(string Name, string M1)
{
    immutable string GenStruct = "struct " ~ Name ~ "{ int " ~ M1 ~ "; }";
}

It must be immutable to be seen as a template expression. Otherwise it's one mutable string declaration that happens to be named 
same as the enclosing template.


Tomek