Opportunities for D

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On Tuesday, 8 July 2014 at 22:21:43 UTC, bearophile wrote:
> Walter Bright:
>
>> but it doesn't go so far as creating a Unique!T type.
>
> What about the already present std.typecons.Unique?
>
>
> In your list I'd like to add another point:
> 9. Built-in tuples usable in all the most important situations 
> (with a syntax that doesn't kill possible future improvements 
> of the switch statement to perform basic pattern matching on 
> structs that have an optional method named "unapply").
>
> Bye,
> bearophile

What if we had an "opDestructure" or "opMatch" or something like 
that? It could return a tuple and be auto-implemented by the 
compiler for simple structs/classes. Then users could precisely 
control how their type can be destructured.