Expose some low level functions and String operators.

test/demo/main.gd

@@ -54,6 +54,15 @@ func _ready():
 	var array: Array[int] = [1, 2, 3]
 	$Example.test_tarray_arg(array)
 
+	prints("String += operator")
+	prints("  test string +=", $Example.test_string_ops())
+
+	prints("WorkerThreadPool")
+	prints("  test worker_thread_pool", $Example.test_workpool_ops())
+
+	prints("PackedArray iterators")
+	prints("  test packed array iterators", $Example.test_vector_ops())
+
 	prints("Properties")
 	prints("  custom position is", $Example.group_subgroup_custom_position)
 	$Example.group_subgroup_custom_position = Vector2(50, 50)

test/src/example.cpp

@@ -123,6 +123,8 @@ void Example::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("test_tarray"), &Example::test_tarray);
 	ClassDB::bind_method(D_METHOD("test_dictionary"), &Example::test_dictionary);
 	ClassDB::bind_method(D_METHOD("test_node_argument"), &Example::test_node_argument);
+	ClassDB::bind_method(D_METHOD("test_string_ops"), &Example::test_string_ops);
+	ClassDB::bind_method(D_METHOD("test_vector_ops"), &Example::test_vector_ops);
 
 	ClassDB::bind_method(D_METHOD("def_args", "a", "b"), &Example::def_args, DEFVAL(100), DEFVAL(200));
 
@@ -255,6 +257,28 @@ Array Example::test_array() const {
 	return arr;
 }
 
+String Example::test_string_ops() const {
+	String s = String("A");
+	s += "B";
+	s += "C";
+	s += char32_t(0x010E);
+	s = s + "E";
+	return s;
+}
+
+int Example::test_vector_ops() const {
+	PackedInt32Array arr;
+	arr.push_back(10);
+	arr.push_back(20);
+	arr.push_back(30);
+	arr.push_back(45);
+	int ret = 0;
+	for (const int32_t &E : arr) {
+		ret += E;
+	}
+	return ret;
+}
+
 void Example::test_tarray_arg(const TypedArray<int64_t> &p_array) {
 	for (int i = 0; i < p_array.size(); i++) {
 		UtilityFunctions::print(p_array[i]);

test/src/example.h

@@ -101,6 +101,8 @@ public:
 	TypedArray<Vector2> test_tarray() const;
 	Dictionary test_dictionary() const;
 	Example *test_node_argument(Example *p_node) const;
+	String test_string_ops() const;
+	int test_vector_ops() const;
 
 	// Property.
 	void set_custom_position(const Vector2 &pos);