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Re: [std-proposals] C-style array specialization for std::get

From: Zhihao Yuan <zy_at_[hidden]>
Date: Mon, 28 Feb 2022 18:11:11 +0000
On Monday, February 28th, 2022 at 8:44 AM, Paolo Di Giglio via Std-Proposals <std-proposals_at_[hidden]> wrote:

> I'd like to propose a specialization of function template std::get for

> C-style arrays. A simple two-liner would provide compile-time catching

> of out-of-bound array accesses (please note we already have this check

> for the std::array specialization):

> template <std::size_t Idx, typename T, std::size_t N>

> constexpr T& get(T (&arr)[N]) noexcept

> {

> static_assert(Idx < N, "Index out of bounds");

> return arr[Idx];

> }

I had that thought back in

Use array as a tuple - 4BSD (miator.net)

It is worth noticing that the latter addedstructured binding has special rules forarrays, so enabling tuple-interface onarrays may cause some confusion.

Zhihao Yuan, ID lichray
The best way to predict the future is to invent it.

Received on 2022-02-28 18:11:16