Re: Traits and static methods

Hi Simas: On 16 Nov 2010, at 18:46, Simas Toleikis wrote: > The first thing that comes to my mind is a Singleton > implementation - this is where I found myself literally "copying" most of > the code in the past. As far as I know there is no way to implement this > pattern properly in PHP without duplicate code (due to lack of multiple > inheritance/templating). > > Unfortunately, the same RFC document mentions this for trait methods: > > The static modifier is not supported, because it would change the methods >> semantics and references to $this would break. >> > > .. and that pretty much defeats Singleton-Trait implementation. Is there any > particular technical/design reasons why traits can't handle $this inside > static methods just like regular static methods do (with a fatal error)? Hm, good question. I don't recall any implementation details. Haven't touched the code for too long. From the top of my head, I don't see why it should not work. If I would have elaborated a bit more what I was thinking when I wrote that comment... Following the motto 'it is just compiler assisted copy and paste' I think it should be implemented. Best regards Stefan -- Stefan Marr Software Languages Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://soft.vub.ac.be/~smarr Phone: +32 2 629 2974 Fax: +32 2 629 3525