From ea417d7c4d430d4bb6fcce14e64ffda82f475805 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 28 Feb 2016 14:45:56 +0000
Subject: Extract forEach over two iterabes

---
 .../java/org/zwobble/couscous/util/ExtraIterables.java | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/main/java/org/zwobble/couscous/util/ExtraIterables.java

(limited to 'src/main/java/org/zwobble/couscous/util/ExtraIterables.java')

diff --git a/src/main/java/org/zwobble/couscous/util/ExtraIterables.java b/src/main/java/org/zwobble/couscous/util/ExtraIterables.java
new file mode 100644
index 0000000..9cdb0f0
--- /dev/null
+++ b/src/main/java/org/zwobble/couscous/util/ExtraIterables.java
@@ -0,0 +1,18 @@
+package org.zwobble.couscous.util;
+
+import java.util.Iterator;
+
+public class ExtraIterables {
+    private ExtraIterables() {}
+
+    public static <T, U> void forEach(Iterable<? extends T> first, Iterable<? extends U> second, Action2<T, U> action) {
+        Iterator<? extends T> firstIterator = first.iterator();
+        Iterator<? extends U> secondIterator = second.iterator();
+        while (firstIterator.hasNext()) {
+            action.run(firstIterator.next(), secondIterator.next());
+        }
+        if (secondIterator.hasNext()) {
+            throw new RuntimeException("Iterables not of same length");
+        }
+    }
+}
-- 
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