August <[EMAIL PROTECTED]> writes: > On lör, 2005-02-19 at 19:43 +0100, David Kastrup wrote: >> Joe Corneli <[EMAIL PROTECTED]> writes: >> >> > Is there a shorter way to concatenate a list of strings >> > than this? >> > >> > (eval (append (list 'concat) list-of-strings)) >> > >> > Or more generally, >> > >> > (eval (append (list 'function-that-acts-on-foos) list-of-foos)) >> >> (apply #'concat list-of-strings) >> > > What's the purpose of the hash sign? `(apply 'concat > list-of-strings)' works too.
'concat is short for (quote concat), #'concat is short for (function concat). It tells the byte compiler that it is ok to compile the function. For example, '(lambda nil (if)) is a perfectly valid list and if used in function context even in compiled Elisp files, will be evaled the slow way at run time. #'(lambda nil (if)) in contrast gets byte-compiled (and the byte compiler will probably barf). -- David Kastrup, Kriemhildstr. 15, 44793 Bochum _______________________________________________ Help-gnu-emacs mailing list Help-gnu-emacs@gnu.org http://lists.gnu.org/mailman/listinfo/help-gnu-emacs
