1 files changed, 16 insertions, 0 deletions
diff --git a/page/pagelist.go b/page/pagelist.go
index a5cf844..f2140f9 100644
--- a/page/pagelist.go
+++ b/page/pagelist.go
@@ -8,6 +8,22 @@ import (
 // by the date, or date reversed
 type PageList []*Page
 
+// RemoveDateless returns two PageLists, the first with valid dates,
+// and the second without. This is useful if you need a PageList which
+// will run SortDate and SortDateReverse without issue
+func (p PageList) RemoveDateless() (PageList, PageList) {
+	with := PageList{}
+	without := PageList{}
+	for _, p := range p {
+		if p.Date != nil {
+			with = append(with, p)
+		} else {
+			without = append(without, p)
+		}
+	}
+	return with, without
+}
+
 func (p PageList) SortDate() PageList {
 	sort.Slice(p, func(i, j int) bool {
 		return p[i].Time().After(p[j].Time())