pixelrevision · December 5, 2017 22:15 · Dec 5, 2017
diff --git a/Sequence+Walk.swift b/Sequence+Walk.swift
@@ -0,0 +1,13 @@
+extension Sequence {
+
+    func walk(_ childSelector: (Element) -> [Element], handler: (Element) -> Void) {
+        for item in self {
+            handler(item)
+            let children = childSelector(item)
+            if children.count > 0 {
+                children.walk(childSelector, handler: handler)
+            }
+        }
+    }
+
+}