structs and opAssign -- why not?

[Stewart Gordon]

Bill Baxter wrote:
<snip>
> Basically "it bugs me, and there's no compelling use case".
> I think RAII is a compelling use case.  Expression templates are another 
> thing that has been talked about.
> 
> At the very least I think D needs to have some sort of reasonable 
> solution for smart pointers.  Fleshing out structs seems one reasonable 
> way to go about it.
<snip>

To bypass the restriction that scope object references cannot be 
changed?  If we're going to add something to the language for this, why 
not just remove the restriction?

Stewart.

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