* packages/seq/seq.el: Bump version number.
* packages/seq/seq-24.el (seq-sort-by): New function.
* packages/seq/seq-25.el (seq-sort-by): New function.
* packages/seq/tests/seq-tests.el: Add a test for seq-sort-by.
(let ((result (seq-sort predicate (append sequence nil))))
(seq-into result (type-of sequence)))))
+(defun seq-sort-by (function pred sequence)
+ "Sort SEQUENCE using PRED as a comparison function.
+Elements of SEQUENCE are transformed by FUNCTION before being
+sorted. FUNCTION must be a function of one argument."
+ (seq-sort (lambda (a b)
+ (funcall pred
+ (funcall function a)
+ (funcall function b)))
+ sequence))
+
(defun seq-contains (sequence elt &optional testfn)
"Return the first element in SEQUENCE that equals to ELT.
Equality is defined by TESTFN if non-nil or by `equal' if nil."
(let ((result (seq-sort pred (append sequence nil))))
(seq-into result (type-of sequence))))
+(defun seq-sort-by (function pred sequence)
+ "Sort SEQUENCE using PRED as a comparison function.
+Elements of SEQUENCE are transformed by FUNCTION before being
+sorted. FUNCTION must be a function of one argument."
+ (seq-sort (lambda (a b)
+ (funcall pred
+ (funcall function a)
+ (funcall function b)))
+ sequence))
+
(cl-defmethod seq-sort (pred (list list))
(sort (seq-copy list) pred))
;; Author: Nicolas Petton <nicolas@petton.fr>
;; Keywords: sequences
-;; Version: 2.13
+;; Version: 2.14
;; Package: seq
;; Maintainer: emacs-devel@gnu.org
'(11 22 33 44 55)))
(should (equal (seq-mapn #'+ seq seq-2 nil) nil)))))
+(ert-deftest test-seq-sort-by ()
+ (let ((seq ["x" "xx" "xxx"]))
+ (should (equal (seq-sort-by #'seq-length #'> seq)
+ ["xxx" "xx" "x"]))))
+
(provide 'seq-tests)
;;; seq-tests.el ends here