David Kastrup <d...@gnu.org> writes:
> * module/srfi/srfi-1.scm (reduce-right): Avoid use of drop-right in
> connection with last as a single upfront reverse is more efficient and
> simpler to understand.
>
> Signed-off-by: David Kastrup <d...@gnu.org>
> ---
> module/srfi/srfi-1.scm | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/module/srfi/srfi-1.scm b/module/srfi/srfi-1.scm
> index 73d164a..6aa249a 100644
> --- a/module/srfi/srfi-1.scm
> +++ b/module/srfi/srfi-1.scm
> @@ -573,10 +573,7 @@ then that's the return value."
> F is on two elements from LST, rather than one element and a given
> initial value. If LST is empty, RIDENTITY is returned. If LST
> has just one element then that's the return value."
> - (check-arg procedure? f reduce)
> - (if (null? lst)
> - ridentity
> - (fold-right f (last lst) (drop-right lst 1))))
> + (reduce f ridentity (reverse lst)))
>
> (define map
> (case-lambda
Looks good to me.
Mark
