Is this a bug in std.typecons.Tuple.slice?

[tsbockman via Digitalmars-d-learn]

On Tuesday, 9 February 2016 at 06:22:55 UTC, Marco Leise wrote:
> As mentioned I never used the feature myself and wont vote for 
> one or the other. Three people with no source code to exemplify 
> current use of .slice! is indeed not much to base decisions 
> on...

The mere fact that all I had to do to find people who use and 
care about the `ref`-ness of `Tuple.slice` was ask, and then wait 
a few hours, strongly suggests that there are other such people 
among the D user base.

When faced with a judgment call like this, we really ought to err 
on the side of maintaining backwards compatibility - especially 
since this does not preclude adding a separate by-value version 
of `Tuple.slice`, as well. It was going to need a new name anyway.