diff options
Diffstat (limited to 'lisp/emacs-lisp/seq.el')
| -rw-r--r-- | lisp/emacs-lisp/seq.el | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/lisp/emacs-lisp/seq.el b/lisp/emacs-lisp/seq.el index 31c15fea90d..f0dc283f57d 100644 --- a/lisp/emacs-lisp/seq.el +++ b/lisp/emacs-lisp/seq.el @@ -93,6 +93,14 @@ name to be bound to the rest of SEQUENCE." (declare (indent 2) (debug (sexp form body))) `(pcase-let ((,(seq--make-pcase-patterns args) ,sequence)) ,@body)) + +(defmacro seq-setq (args sequence) + "Assign to the variables in ARGS the elements of SEQUENCE. + +ARGS can also include the `&rest' marker followed by a variable +name to be bound to the rest of SEQUENCE." + (declare (debug (sexp form))) + `(pcase-setq ,(seq--make-pcase-patterns args) ,sequence)) ;;; Basic seq functions that have to be implemented by new sequence types @@ -134,9 +142,10 @@ Unlike `seq-map', FUNCTION takes two arguments: the element of the sequence, and its index within the sequence." (let ((index 0)) (seq-do (lambda (elt) - (funcall function elt index) - (setq index (1+ index))) - sequence))) + (funcall function elt index) + (setq index (1+ index))) + sequence)) + nil) (cl-defgeneric seqp (object) "Return non-nil if OBJECT is a sequence, nil otherwise." @@ -146,6 +155,7 @@ the sequence, and its index within the sequence." "Return a shallow copy of SEQUENCE." (copy-sequence sequence)) +;;;###autoload (cl-defgeneric seq-subseq (sequence start &optional end) "Return the sequence of elements of SEQUENCE from START to END. END is exclusive. @@ -392,14 +402,15 @@ found or not." (setq count (+ 1 count)))) count)) -(cl-defgeneric seq-contains (sequence elt &optional testfn) - (declare (obsolete seq-contains-p "27.1")) - "Return the first element in SEQUENCE that is equal to ELT. +(with-suppressed-warnings ((obsolete seq-contains)) + (cl-defgeneric seq-contains (sequence elt &optional testfn) + "Return the first element in SEQUENCE that is equal to ELT. Equality is defined by TESTFN if non-nil or by `equal' if nil." - (seq-some (lambda (e) - (when (funcall (or testfn #'equal) elt e) - e)) - sequence)) + (declare (obsolete seq-contains-p "27.1")) + (seq-some (lambda (e) + (when (funcall (or testfn #'equal) elt e) + e)) + sequence))) (cl-defgeneric seq-contains-p (sequence elt &optional testfn) "Return non-nil if SEQUENCE contains an element equal to ELT. @@ -429,6 +440,7 @@ Equality is defined by TESTFN if non-nil or by `equal' if nil." (setq index (1+ index))) nil))) +;;;###autoload (cl-defgeneric seq-uniq (sequence &optional testfn) "Return a list of the elements of SEQUENCE with duplicates removed. TESTFN is used to compare elements, or `equal' if TESTFN is nil." @@ -455,6 +467,7 @@ negative integer or 0, nil is returned." (setq sequence (seq-drop sequence n))) (nreverse result)))) +;;;###autoload (cl-defgeneric seq-intersection (sequence1 sequence2 &optional testfn) "Return a list of the elements that appear in both SEQUENCE1 and SEQUENCE2. Equality is defined by TESTFN if non-nil or by `equal' if nil." @@ -465,6 +478,7 @@ Equality is defined by TESTFN if non-nil or by `equal' if nil." (seq-reverse sequence1) '())) +;;;###autoload (cl-defgeneric seq-difference (sequence1 sequence2 &optional testfn) "Return a list of the elements that appear in SEQUENCE1 but not in SEQUENCE2. Equality is defined by TESTFN if non-nil or by `equal' if nil." |