On 10.03.2021 20:28, Ben Ramsey wrote: >> I don't like that type covariance would be allowed. Why such an >> exception to the rules? > > It’s not an exception. Returns are covariant. Parameters are > contravariant. Since `noreturn` is a subtype of all other types, it > behaves as expected.
I see it's a subtype, I don't get why. Wouldn't it be better to be a separate type so return type covariance is not allowed (as it is with void)? Was it a design decision or a side product of the implementation? -- Aleksander Machniak Kolab Groupware Developer [https://kolab.org] Roundcube Webmail Developer [https://roundcube.net] ---------------------------------------------------- PGP: 19359DC1 # Blog: https://kolabian.wordpress.com -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
