[Development] Question about QCoreApplicationData::*_libpaths

[Иван Комиссаров]

Still, what about policy not to use std:: classes in Qt API?
Are optional inplementations compatible with each other like std::pair ot
not?

2016-01-06 21:21 GMT+03:00 Kevin Kofler <kevin.kofler at chello.at>:

> Marc Mutz wrote:
> > 1. We'd need to rename the copy, and how, without requiring template
> >    aliases, would we then use one or the other (if we don't rename, we'll
> >    run afoul of the ODR)
>
> Just use good old #define:
> #if HAVE_STD_OPTIONAL
> #define Q_OPTIONAL std::optional
> #elif HAVE_STD_EXPERIMENTAL_OPTIONAL
> #define Q_OPTIONAL std::experimental::optional
> #else
> #define Q_OPTIONAL QtPrivate::optional
> #endif
>
>         Kevin Kofler
>
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