|
From: | Stefan Monnier |
Subject: | bug#17623: 24.4.50; incorrect example for `apply-partially' in (elisp) `Calling Functions' |
Date: | Sun, 29 Jun 2014 17:46:28 -0400 |
User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) |
> There's nothing wrong per see in the current text, but it sounds as if > `apply-partially` would somehow analyze the argument list of its first > argument. But it's semantic is very simple. > Say that > (apply-partially f arg_1 ... arg_n) > is equivalent to > (lambda (&rest args) (apply f arg_1 ... arg_n args)) This equivalence is not true either. E.g. (prog1 (apply-partially #'message format) (setq format "hello")) BTW, `apply-partially' is mostly a crutch to have "simple closures" in a dynamically scoped setting. In code that uses lexical-binding, it's generally better to use a straight closure. Stefan
[Prev in Thread] | Current Thread | [Next in Thread] |