Add method to check for existence of an element.

module/Library/Utils/Dictionary.cpp

@@ -25,6 +25,7 @@ void Register_Dictionary(HSQUIRRELVM vm, Table & ns)
         .Func(_SC("Set"), &SqDictionary::Set)
         .Func(_SC("Clear"), &SqDictionary::Clear)
         .Func(_SC("Erase"), &SqDictionary::Erase)
+        .Func(_SC("Exists"), &SqDictionary::Exists)
         .CbFunc(_SC("Each"), &SqDictionary::Each)
         .CbFunc(_SC("EachWith"), &SqDictionary::EachWith)
         .CbFunc(_SC("While"), &SqDictionary::While)

module/Library/Utils/Dictionary.hpp

@@ -231,6 +231,18 @@ struct SqDictionary
         return false;
     }
 
+    /* --------------------------------------------------------------------------------------------
+     * Check whether an element exists.
+    */
+    bool Exists(SqKeyHash k) const
+    {
+        for (auto & e : mC)
+        {
+            if (e.first == k.mH) return true;
+        }
+        return false;
+    }
+
     /* --------------------------------------------------------------------------------------------
      * Iterate all values through a functor.
     */