https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116399
--- Comment #18 from 康桓瑋 <hewillk at gmail dot com> --- > The random-access-non-sized ranges in the standard are currently only > infinite ranges such as views::iota(0). Random access is useful for these > ranges because we can random access any place without worrying about > out-of-bounds. > > However, for random-access-non-infinite ranges, only simply providing random > access does not seem to be of much use, because we always need to know its > size via ranges::distance before performing random access operations to > avoid out-of-bounds. If we always need to do O(n) to get the size before any random-access operation, why provide random-access in the first place? Wouldn't it be more efficient to just provide only forward operations like std::chrono::tzdb_list does?
