static code generation

[js.mdnq]

How can I create mixes of stringified code and code itself?

http://dlang.org/mixin.html

explains how to create structs using strings. But what if I do 
not want to have to encode the whole struct as a string but only 
parts of it?


mixin template GenStruct(stringname)
{
      struct stringname ~ "alpha"
      {
          ....
      }
}


mixin GenStruct!("Helpme");

would be equivalent to do the following

struct Helpmealpha
{
     ....
}