On Wed, Aug 8, 2012 at 10:55 PM, Andrew Faulds <a...@ajf.me> wrote: > Hmm. This is just a quick thought: > > Considering the yield syntax will vary about needing () round it, why not > make it a "fake" function (language construct). > > This way it's consistent: yield(), yield($v), yield($k => $v), $a = yield(), > etc. > > (yield $x) is just messy as an expression. We don't have (isset $x), we have > isset($x).
There are two reasons why I would not choose that syntax: 1. This would make "yield" look like a functions, without actually being a function. PHP has done this in the past quite often and I think it was a mistake. It is the reason why people try to write empty(someCall()). It looks like a function, so they expect it to behave like one. Similarly you also can't do $f = 'empty'; $f($foo), which again is confusing to people new to the language. 2. Other languages that implement generators also use the "yield $foo" syntax (and also have the same parentheses requirements). So this makes PHP consistent with them. Nikita -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
