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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c++
Subject: Re: Virtual functions: To const, or not to const?
Date: Mon, 10 Oct 2022 09:26:56 -0700
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Juha Nieminen <nospam@thanks.invalid> writes:

[...]

> All possible solutions have something wrong about them.

That's because what you're asking for is self-contradictory.  On
the one hand you want to be able to invoke the method on a const
reference.  On the other hand you want invoking the method on a
const reference to give a compile-time error.  Obviously the same
interface cannot do both, because either possibility necessarily
precludes the other.