Tidy up processing of statements in switch

1 files changed, 26 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/couscous/util/Tails.java b/src/main/java/org/zwobble/couscous/util/Tails.java
new file mode 100644
index 0000000..f9ec724
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/util/Tails.java
@@ -0,0 +1,26 @@
+package org.zwobble.couscous.util;
+
+import java.util.Iterator;
+import java.util.List;
+
+public class Tails {
+    public static <T> Iterable<List<T>> tails(List<T> list) {
+        return () -> new Iterator<List<T>>() {
+            private int startIndex = 0;
+
+            @Override
+            public boolean hasNext() {
+                return startIndex < list.size();
+            }
+
+            @Override
+            public List<T> next() {
+                return list.subList(startIndex++, list.size());
+            }
+        };
+    }
+
+    public static <T> List<T> tail(List<T> list) {
+        return list.subList(1, list.size());
+    }
+}