Re: Generators in PHP

Hello Ivan, Moreover, I wonder how a “recursive yield” would act (something like > “public function *f ( … ) { … yield $this->f(…); … }”). It is possible? Is > it anticipated? > According to the RFC, your syntax will yield an entire generator and not its intividual values. Please consider this example: function * f() { ... } function * g() { yield f(); } function * h() { foreach( f() as $key => $value ) yield $key => value; } The pattern in function h() is quite common, and it is what you ask for. It would be nice to have some syntactical sugar for it, maybe something like that: public function * h() { yield foreach f(); } Good work, I am looking forward to having generators in php. Lazare INEPOLOGLOU Ingénieur Logiciel 2012/6/6 Ivan Enderlin @ Hoa <ivan.enderlin@hoa-project.net> > On 05/06/12 19:35, Nikita Popov wrote: > >> Hi internals! >> > Hi Nikita, > > Before going any further I'd like to get some comments about what you >> think of adding generator support to PHP. >> > I have always hoped to see the “yield” keywork introduced in PHP. I even > suggested that in this mailing-list at least one time but I'm very glad to > see some patches coming out. > > In addition to Gustavo's remarks, I wonder how the GC would collect a > Generator object that is not use anymore (especially with a referenced > yield). Does it fit to the current CG strategy or do we need an extra > strategy? I would notice that the “Yield by reference” section does not > exist but you have targeted it). > Moreover, I wonder how a “recursive yield” would act (something like > “public function *f ( … ) { … yield $this->f(…); … }”). It is possible? Is > it anticipated? > > Thanks for you work. > > Cheers. > > -- > Ivan Enderlin > Developer of Hoa > http://hoa.42/ or > http://hoa-project.net/ > > PhD. student at DISC/Femto-ST (Vesontio) and INRIA (Cassis) > http://disc.univ-fcomte.fr/ and > http://www.inria.fr/ > > Member of HTML and WebApps Working Group of W3C > http://w3.org/ > > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > >