Add seq-min and seq-max

Bump version number.

* lisp/emacs-lisp/seq.el (seq-min, seq-max): New functions.
* test/automated/seq-tests.el: Add tests for seq-min and seq-max.

lisp/emacs-lisp/seq.el

@@ -4,7 +4,7 @@
 
 ;; Author: Nicolas Petton <nicolas@petton.fr>
 ;; Keywords: sequences
-;; Version: 1.7
+;; Version: 1.8
 ;; Package: seq
 
 ;; Maintainer: emacs-devel@gnu.org
@@ -325,6 +325,16 @@ TYPE can be one of the following symbols: vector, string or list."
     (`list (append seq nil))
     (_ (error "Not a sequence type name: %S" type))))
 
+(defun seq-min (seq)
+  "Return the smallest element of SEQ.
+SEQ must be a sequence of numbers or markers."
+  (apply #'min (seq-into seq 'list)))
+
+(defun seq-max (seq)
+    "Return the largest element of SEQ.
+SEQ must be a sequence of numbers or markers."
+  (apply #'max (seq-into seq 'list)))
+
 (defun seq--drop-list (list n)
   "Return a list from LIST without its first N elements.
 This is an optimization for lists in `seq-drop'."

test/automated/seq-tests.el

@@ -297,5 +297,10 @@ Evaluate BODY for each created sequence.
       (should (null b))
       (should (null c)))))
 
+(ert-deftest test-seq-min-max ()
+  (with-test-sequences (seq '(4 5 3 2 0 4))
+    (should (= (seq-min seq) 0))
+    (should (= (seq-max seq) 5))))
+
 (provide 'seq-tests)
 ;;; seq-tests.el ends here