I want to create my own Tuple type

[Ola Fosheim Grøstad]

On Monday, 11 January 2021 at 14:03:39 UTC, Paul Backus wrote:
>     alias expand this;

Hm... this does not allow me protect the fields from being 
changed. I also cannot use const since it is transitive and would 
make it impossible to return two references to mutable objects?

Basically, the tuple itself should be immutable, but not the 
objects being referenced. I guess I could run over the types and 
add const if they are not references?