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Postings from March 2023
Op 09-03-2023 om 21:14 schreef Ovid: > On Thu, Mar 9, 2023 at 8:59 PM Dan Book <grinnz@gmail.com> wrote: > > On Thu, Mar 9, 2023 at 2:50 PM Paul "LeoNerd" Evans > <leonerd@leonerd.org.uk> wrote: > > To me what people are looking for is read only structures. > Thus 1. we need an actual read only mechanism for hashes > (restricted hashes are too restrictive for this purpose), and > 2. in your example the declaration would cause @nums to also > become read only. > > > Causing @nums to be read-only sounds like a good idea, actually. > Immutable data is often a huge win. The downside is when someone tries > to mutate @nums. We'd want a mechanism to tell the developer how and > where the variable became read-only. That introduces its own set of > problems, particularly if it's happened multiple times. I think that would lead to very surprising behaviour. If @num itself is not const, I would expect this construct to either die, or make the reference RO but not @num itself. M4Thread Previous | Thread Next