Automatically clean up old entries

src/utils/ArrayUtils.ts

@@ -21,4 +21,20 @@ export function findKey(object: Object, value: any): string {
 	}
 
 	return null;
-}
+}
+
+/**
+ * Remove all the entries of an array that meets a certain condition
+ * 
+ * @param array Input array
+ * @param callback Callback function to call on each element
+ * of the array
+ */
+export function removeWhere<T>(array: Array<T>, callback: (el: T) => boolean) {
+    var i = array.length;
+    while (i--) {
+        if (callback(array[i])) {
+            array.splice(i, 1);
+        }
+    }
+};