Const Tuples

[bearophile via Digitalmars-d-learn]

Dicebot:

> For your objections to make sense tuple would need to be 
> inroduced as completely new first class type system entity. As 
> this will never happen,

I think first class tuples will happen in D, because the current 
tuple situation is quite bad.

But this thread is not about built-in tuples, here we are 
discussing about possible improvements to the Phobos 
implementation of tuples.

A possible solution is an optional "@structural" attribute for 
structs that gives structural typing to one struct (that will be 
used as underlying implementation for library-defined tuples.

Bye,
bearophile