Re: [RFC][DISCUSSION] Allow default value in list() syntax

I don't have a strong opinion about the nested list() construct which is also part of the RFC. I never had a situation where I wanted this. On Thu, Aug 10, 2017 at 11:21 PM, Andreas Hennings <andreas@dqxtech.net> wrote: > Hello list, > > I found this RFC, describing a feature I wanted for a long time: > https://wiki.php.net/rfc/list_default_value > https://marc.info/?l=php-internals&m=144707619509724 > > (I don't know how to correctly reply to old emails that are not in my > inbox, sorry for that. I don't like mailing lists.) > > I regularly want this kind of feature when unpacking a string with explode(): > > list($prefix, $suffix = NULL) = explode(':', $string); > if (NULL !== $suffix) { > ... > } > > This is for situations where a string is coming from somewhere, we > hope it has the format "aaa:bbb", but we cannot be sure. > > Sometimes I use a workaround like this: > > list($prefix, $suffix) = explode(':', $string . ':'); > if ('' !== $suffix) { > ... > } > Which works, but means a new string will be allocated in memory. > > I find the list() with default values to be a decent and > understandable language feature. > > -- Andreas