From: Pilar Latiesa <pilarlatiesa@gmail.com>
To: Patrick Palka <ppalka@redhat.com>
Cc: Jonathan Wakely <jwakely.gcc@gmail.com>,
libstdc++@gcc.gnu.org, gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] libstdc++: Allow adjacent __maybe_present_t<false, ...> to overlap
Date: Tue, 2 Apr 2024 21:41:45 +0200 [thread overview]
Message-ID: <CAEwrC9bGAwMRkko5HL5CWXTKV8m=6a4oKPR1fWeGU0ts13Es8Q@mail.gmail.com> (raw)
In-Reply-To: <5db417d9-52e9-e701-2644-5802148e8339@idea>
> > This is subjectively horrible and, more objectively, would create
> > longer mangled names and additional RTTI.
> Yeah, it's a neat trick but probably not appropriate to use within the
> standard library.
I understand. I was genuinely curious about whether this would do the trick.
In fact, if I'm not mistaken, the whole thing could be simplified to:
template<bool _Present, typename _Tp, typename _Absent = decltype([]{})>
using __maybe_present_t = __conditional_t<_Present, _Tp, _Absent>;
next prev parent reply other threads:[~2024-04-02 19:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-02 16:59 Pilar Latiesa
2024-04-02 17:01 ` Jonathan Wakely
2024-04-02 17:18 ` Patrick Palka
2024-04-02 19:41 ` Pilar Latiesa [this message]
-- strict thread matches above, loose matches on Subject: below --
2024-04-01 22:15 Patrick Palka
2024-04-02 9:17 ` Jonathan Wakely
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