Post #24797 25 Feb 21, 2026, 06:23 UTC C++26: std::is_within_lifetimehttps://www.sandordargo.com/blog/2026/02/18/cpp26-std_is_within_lifetimehttps://redd.it/1ragm1s@r_cpp Sandor Dargo’s Blog C++26: std::is_within_lifetime When I was looking for the next topic for my posts, my eyes stopped on std::is_within_lifetime. Dealing with lifetime issues is a quite common source of bugs, after all. Then I clicked on the link and I read Checking if a union alternative is active. I scratched…