At the risk of stating the obvious, can’t you just use $f->bar->__invoke()?
Actually, it was not immediately obvious that __invoke() was a method
from the docs as it is a side-note and not in the class signature
breakout. Oops! ;)
http://php.net/manual/en/class.closure.php
That said, call() would be more of a "first-class method" in the Closure
class API, as opposed to __invoke() which is largely relegated as a
"magic" method.
But you have a solid point on that.
-ralph
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