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From: Peter Dimov (pdimov_at_[hidden])
Date: 2020-09-08 21:36:37

Andrey Semashev wrote:

> I noticed a few missing operators: unary +, ++, --, <<, >>, <=>, =,
> <op>=. Also, unary &, but I'm not sure it's a good idea to add one. I
> realize that there are no functional objects for those, but the library
> could define them. Do you plan to add them?

I think that << and >> almost certainly belong there, and I was kind of
surprised that <functional> doesn't define function objects for them. Next
in line would be unary plus.

I'm less sure about the various op-assignments and ++/--. At the moment I'd
be inclined to skip them. And of course op= is impossible to add because it
must be a member.

As for <=>, I admit I haven't considered it at all. I haven't yet updated my
thinking to C++20.

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