Re: Suggested additional example to Emacs Lisp Manual: Variables: Let

[John Wiegley]

>>>>> "br" == ben rudgers <address@hidden> writes:

br> The manual does not provide an example showing a locally scoped function.
br> Though the behavior can potentially be inferred from the documentation of
br> functions, an example showing the relationship between =let= and =funcall=
br> might be of practical help for someone who has not made a deep dive into
br> the manual.

I think it would be better to encourage the use of `cl-flet' or `cl-labels',
as though macros are specifically intended for binding local function
definitions, and will automatically handle whether the function should be a
`lambda' or a `closure', depending on the setting of `lexical-binding'.

Your approach may have merit in terms of pedagogy, but I'd prefer to nudge
users toward more idiomatic usage from the beginning.

@example
(require 'cl-macs)
(defun foo (x)
  (cl-flet ((bar (y) (+ x y)))
    (bar 3)))
(foo 4)
     @result{} 7
@end example

-- 
John Wiegley                  GPG fingerprint = 4710 CF98 AF9B 327B B80F
http://newartisans.com                          60E1 46C4 BD1A 7AC1 4BA2