From 04fd96cac33fa7557e574e54575252564ba27111 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Sun, 14 Apr 2013 16:56:08 +0200 Subject: utils: Add `fold2'. * gnu/packages.scm (fold2): Remove. * guix/utils.scm (fold2): New procedure. Generalization of the above to one and two lists. * tests/utils.scm ("fold2, 1 list", "fold2, 2 lists"): New tests. --- gnu/packages.scm | 8 -------- 1 file changed, 8 deletions(-) (limited to 'gnu') diff --git a/gnu/packages.scm b/gnu/packages.scm index b639541788..f4d93a789d 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -110,14 +110,6 @@ (false-if-exception (resolve-interface name)))) (package-files))) -(define (fold2 f seed1 seed2 lst) - (if (null? lst) - (values seed1 seed2) - (call-with-values - (lambda () (f (car lst) seed1 seed2)) - (lambda (seed1 seed2) - (fold2 f seed1 seed2 (cdr lst)))))) - (define (fold-packages proc init) "Call (PROC PACKAGE RESULT) for each available package, using INIT as the initial value of RESULT. It is guaranteed to never traverse the -- cgit v1.2.3