Re: mutate list by appending a list (and similar for props)

[Stefan Monnier <monnier@iro.umontreal.ca>]

> (define-modify-macro appendf (&rest args) append "Append onto list")

With GV, this would be

   (defmacro sm-appendf (place &rest args)
     (gv-letplace (getter setter) place
       (funcall setter `(append ,getter ,@args))))

> (defun prepend (dest-list &rest other-lists)
>   (apply (function append) (append other-lists (list dest-list))))
> (define-modify-macro prependf (&rest args) prepend "Prepend to list")

Which with GV would turn into

   (defmacro sm-appendf (place &rest args)
     (gv-letplace (getter setter) place
       (funcall setter `(append ,@args ,getter))))


-- Stefan