Apparently "foo(...)" is just the PHP syntax for a function reference, according to the "first-class callable" RFC [1] linked from the article. So where in Pyt

Apparently "foo(...)" is just the PHP syntax for a function reference, according to the "first-class callable" RFC [1] linked from the article. So where in Python you would say e.g. callbacks = [f, g] PHP requires the syntax $callbacks = [f(...), g(...)]; As for the purpose of the feature as a whole, although it seems like it could be replaced with function composition as mentioned at the end of the article, and the function composition could be implemented with a utility function instead of dedicated syntax, the advantage of adding these operators is apparently [2] performance (fewer function calls) and facilitating static type-checking. [1] https://wiki.php.net/rfc/first_class_callable_syntax https://wiki.php.net/rfc/first_class_callable_syntax [2] https://wiki.php.net/rfc/function-composition#why_in_the_engine https://wiki.php.net/rfc/function-composition#why_in_the_eng...