Re: 5.4 beta

' On Fri, Oct 7, 2011 at 8:58 PM, Gustavo Lopes <glopes@nebm.ist.utl.pt> wrote: > On Fri, 07 Oct 2011 18:31:42 +0100, Ferenc Kovacs <tyra3l@gmail.com> wrote: > >> do we have a wiki/documentation about what exactly ended up in 5.4 >> from the Closure improvements? (Rebind) >> >> >> https://wiki.php.net/rfc/closures/object-extension#privateprotected_members_scope >> is really hard to read, as it contains all of the suggested ideas and >> possible solutions, etc. >> if not, maybe someone with the required knowledge  could start working >> on adding the documentation? >> > > I don't think so, but if I had to summarize the innovations in 5.4, this > would be it: > > - Closures can now have an associated scope > - Closures can now have a bound object > - Closures can now be either static or non-static > > - Closures defined in a place with an active scope are scoped accordingly > - Closures defined inside an instance method (or bound closure) have a bound > object (namely $this) > - Closures are static if defined within a static method or with the static > keyword (static function() { ... }) > > static => !bound > (but it's false that !static => bound) > bound => scoped > !static && scoped => bound > (i.e., if !static, scoped <=> bound) > > The bound instance and the scoped can be freely changed with Closure::bind > and $closure->bindTo, subject to these constraints. "- Closures can now have an associated scope" as it is https://wiki.php.net/rfc/closures/object-extension#privateprotected_members_scope ? at first I thought that scope means Variable scope, but I think I get it now: it means that when the Closure calls/access something through $this, it will be handled as it was called/accessed from the given class(scope). and this also explains why we had to add the third param for Closure::bind. the bound param defines what is the $this pointing to, and the scope means that from what scope would be used for accessing the $this. having a static Closure means that it won't have the $this, but it can still have a scope (so it can interact with other static methods). thanks, I think I managed to wrap my head around that! -- Ferenc Kovács @Tyr43l - http://tyrael.hu