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Re: [std-proposals] Subscript aliasing

From: Jan Schultke <janschultke_at_[hidden]>
Date: Fri, 8 Mar 2024 00:39:41 +0100
Here's another idea:

struct S {
    int arr[3];

    template <char... Name>
      requires (sizeof...(Name) == 1)
    int operator""() {
        switch (Name...) {
        case 'x': return arr[0];
        case 'y': return arr[1];
        case 'z': return arr[2];

You wouldn't need to touch using-declarations; this is pretty much
using existing syntax.

Such a "member selection operator" could also be used to implement
swizzling such as "s.xy", "s.zzz", etc.

Received on 2024-03-07 23:39:53