> On 7 Jul 2018, at 00:13, nine.fierce.ball...@gmail.com wrote:
>
> On Jul 6, 2018, at 18:02, Hans Åberg <haber...@telia.com> wrote:
> One can do it the other way around, too:
> #if __cplusplus < 201703L
> namespace std {
> using optional = Optional;
> }
> #endif
>
> Ugh. That’s too pragmatic [even] for me.
That came up on the Bison list in the context of the typed C++ parser, as a
workaround for not having C++17 std::variant.
> I specifically avoided naming my class "optional" to avoid confusion
> with the standard type--but this is strictly academic now, as I’ve
> already moved it into Dimension_cache and reduced its interface.
The technique is useful for transforming code, though.
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