Re: Re: [RFC] Nullable intersection types

On Fri, Jul 23, 2021 at 12:55 PM Mark Randall <marandall@php.net> wrote: > On 23/07/2021 10:58, Nicolas Grekas wrote: > > Hi everyone, > > I wrote everything down about the reasons why here: > > https://wiki.php.net/rfc/nullable_intersection_types > > > IMO we should require brackets and forbid not using them when combining > unions and intersections. > > These types are already going to be confusing enough and we can likely > save a fair amount of confusion and pain down the line by requiring the > explicit brackets. > > Without wanting to bikeshed, let's just make sure we're set on () > because whatever we choose here will be the defacto mechanism for > declaring sub-types in PHP for the rest of eternity so it would need to > be maximally compatible with everything we might want to do with them. > This is also my preference to have it (A&B)|null - It is the least "disruptive" change for this late stage of the release cycle and leaves the most potential for future improvements. > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: https://www.php.net/unsub.php > >