On Friday, July 31, 2020 at 8:21:01 PM UTC-5, Botond Ballo wrote: > On Fri, Jul 31, 2020 at 9:00 PM <cpp....@gmail.com> wrote: > > > Stupid: It is not stupid, it is a feature. > > > > Ah, you mean `static inline` has uses in C++17 that it didn't have in older > versions? > > I would appreciate an example (or a link to post etc.) so we can understand > this better. > > Thanks, > Botond
Sure, before 17 you had to initialize static variable in cpp "encapsulated" code. So maybe you want to expose static data, specifically the way you initialized this static data, through your headers cause you want your API users to have access to read them and figure out things. Now, you can do that in your header file outside the class brackets. But if you included the header, in more than one user cpp file, the linker will complain with duplicated declaration of your static objects. Now with inline static, you can initialize in the class declaration. Whenever may be the case you want your API users (if an API / Lirbary is what you are writing) to understand how's your static var is initialized. A link to show what I mean: https://www.tutorialspoint.com/how-do-inline-variables-work-in-cplusplus-cplusplus17#:~:text=The%20static%20value%20is%3A%2010,the%20class%20using%20inline%20variables. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
