Deduce correct concat type

1 files changed, 33 insertions, 0 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java b/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java
new file mode 100644
index 00000000000..e0e4a0828a9
--- /dev/null
+++ b/vespajlib/src/main/java/com/yahoo/lang/MutableLong.java
@@ -0,0 +1,33 @@
+// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.lang;
+
+/**
+ * A mutable long
+ *
+ * @author bratseth
+ */
+public class MutableLong {
+
+    private long value;
+
+    public MutableLong(long value) {
+        this.value = value;
+    }
+
+    public long get() { return value; }
+
+    public void set(long value) { this.value = value; }
+
+    /** Adds the increment to the current value and returns the resulting value */
+    public long add(long increment) {
+        value += increment;
+        return value;
+    }
+
+    /** Adds the increment to the current value and returns the resulting value */
+    public long subtract(long increment) {
+        value -= increment;
+        return value;
+    }
+
+}