diff --git a/core/src/processing/data/FloatDict.java b/core/src/processing/data/FloatDict.java
index f23c8f981..5167cf35c 100644
--- a/core/src/processing/data/FloatDict.java
+++ b/core/src/processing/data/FloatDict.java
@@ -246,6 +246,11 @@ public class FloatDict {
   }
 
 
+  public boolean hasKey(String key) {
+    return index(key) != -1;
+  }
+
+
 //  /** Increase the value of a specific key by 1. */
 //  public void inc(String key) {
 //    inc(key, 1);
diff --git a/core/src/processing/data/IntDict.java b/core/src/processing/data/IntDict.java
index 18c95aea2..dfa079980 100644
--- a/core/src/processing/data/IntDict.java
+++ b/core/src/processing/data/IntDict.java
@@ -235,6 +235,11 @@ public class IntDict {
   }
 
 
+  public boolean hasKey(String key) {
+    return index(key) != -1;
+  }
+
+
   /** Increase the value of a specific key by 1. */
   public void increment(String key) {
     add(key, 1);
diff --git a/core/src/processing/data/StringDict.java b/core/src/processing/data/StringDict.java
index c72d370e0..a07bbb3fb 100644
--- a/core/src/processing/data/StringDict.java
+++ b/core/src/processing/data/StringDict.java
@@ -215,6 +215,11 @@ public class StringDict {
   }
 
 
+  public boolean hasKey(String key) {
+    return index(key) != -1;
+  }
+
+
   protected void create(String key, String value) {
     if (count == keys.length) {
       keys = PApplet.expand(keys);