add array_find example

Author: mstop4

current-scripts/Demos/useful-scripts/objects/obj_data_structures_demo/Create_0.gml

@@ -1,3 +1,4 @@
 randomise();
 test_array = [1, -3, "foo", { n: "bar" }, [0, 2.333]];
-choice = choose_from_array(test_array);
+choice = choose_from_array(test_array);
+found = array_find(test_array, "foo");

current-scripts/Demos/useful-scripts/objects/obj_data_structures_demo/Draw_0.gml

@@ -5,9 +5,13 @@ draw_text(room_width/2, 16, "Data Structures Demo");
 
 draw_set_halign(fa_left);
 draw_text(16, 64, "Choose From Array");
+draw_text(16, 160, "Array Find (deprecated, use array_find_index instead)");
 
 draw_set_font(fnt_demo);
 
 // Choose From Array
 draw_text(16, 96, "Original Array: " + string(test_array));
-draw_text(16, 128, "Random Choice: " + string(choice));
+draw_text(16, 128, "Random Choice: " + string(choice));
+
+// Array Find
+draw_text(16, 192, "Index of Foo: " + string(found));

current-scripts/Demos/useful-scripts/objects/obj_data_structures_demo/obj_data_structures_demo.yy

@@ -46,10 +46,11 @@ function array_is_subset(_a, _b) {
 /// @param {Array} array
 /// @param {any} value
 function array_find(_array, _value) {
-	array_foreach(_array, function(_element, _i) {
-		if (_element == _value) return _i;
-	});
-
+	var _len = array_length(_array);
+	for (var i=0; i<_len; i++) {
+		if (_array[i] == _value) return i;
+	}
+	
 	return -1;
 }