Partial specialisation: howto? (in the right news group this time. *sigh*)

[Simen Kjaeraas]

div0 wrote:

It seems I might know how to do this after all.

As is mentioned under template constraints[1], templates can be specialized by trailing the parameter list with a condition:

template createHandlerCode( T... ) if ( T[0]._type == EHandlerType.eMsgRangeHdlr ) {
  string format( ) {
    return createMessageRangeHandler!( T ).format();
  }
}
template createHandlerCode( T... ) if ( T[0]._type == EHandlerType.eMsgHdlr ) {
  string format( ) {
    return createMessageHandler!( T ).format();
  }
}
template createHandlerCode( T... ) if ( T[0]._type == EHandlerType.eCmdIdHdlr ) {
  string format( ) {
    return createCommandIdHandler!( T ).format();
  }
}

This code is D2-only and untested, so there is certainly a possibility it will not work for you.

[1]: http://www.digitalmars.com/d/2.0/template.html#Constraint

--
  Simen