[.NET] Use collection expressions

As of C# 12 we can now use collection expressions to reduce some boilerplate when initializing collections.

tutorials/2d/custom_drawing_in_2d.rst

@@ -377,7 +377,7 @@ like this:
         // We are going to paint with this color.
         Color godotBlue = new Color("478cbf");
         // We pass the array of Vector2 to draw the shape.
-        DrawPolygon(_head, new Color[]{ godotBlue });
+        DrawPolygon(_head, [godotBlue]);
     }
 
 When running it you should see something like this:
@@ -474,7 +474,7 @@ draw the line, like this:
         Color white = Colors.White;
         Color godotBlue = new Color("478cbf");
 
-        DrawPolygon(_head, new Color[]{ godotBlue });
+        DrawPolygon(_head, [godotBlue]);
 
         // We draw the while line on top of the previous shape.
         DrawPolyline(_mouth, white, _mouthWidth);
@@ -535,7 +535,7 @@ its radius, and the third is its color:
         Color godotBlue = new Color("478cbf");
         Color grey = new Color("414042");
 
-        DrawPolygon(_head, new Color[]{ godotBlue });
+        DrawPolygon(_head, [godotBlue]);
         DrawPolyline(_mouth, white, _mouthWidth);
 
         // Four circles for the 2 eyes: 2 white, 2 grey.
@@ -589,7 +589,7 @@ like this:
         Color godotBlue = new Color("478cbf");
         Color grey = new Color("414042");
 
-        DrawPolygon(_head, new Color[]{ godotBlue });
+        DrawPolygon(_head, [godotBlue]);
         DrawPolyline(_mouth, white, _mouthWidth);
         DrawCircle(new Vector2(42.479f, 65.4825f), 9.3905f, white);
         DrawCircle(new Vector2(85.524f, 65.4825f), 9.3905f, white);
@@ -652,7 +652,7 @@ to do it, like this:
         Color godotBlue = new Color("478cbf");
         Color grey = new Color("414042");
 
-        DrawPolygon(_head, new Color[]{ godotBlue });
+        DrawPolygon(_head, [godotBlue]);
         DrawPolyline(_mouth, white, _mouthWidth);
         DrawCircle(new Vector2(42.479f, 65.4825f), 9.3905f, white);
         DrawCircle(new Vector2(85.524f, 65.4825f), 9.3905f, white);

tutorials/3d/procedural_geometry/arraymesh.rst

@@ -94,7 +94,7 @@ Under ``_ready()``, create a new Array.
   
   .. code-tab:: csharp C#
 
-    var surfaceArray = new Godot.Collections.Array();
+    Godot.Collections.Array surfaceArray = [];
 
 This will be the array that we keep our surface information in - it will hold
 all the arrays of data that the surface needs. Godot will expect it to be of
@@ -108,7 +108,7 @@ size ``Mesh.ARRAY_MAX``, so resize it accordingly.
   
  .. code-tab:: csharp C#
 
-    var surfaceArray = new Godot.Collections.Array();
+    Godot.Collections.Array surfaceArray = [];
     surfaceArray.Resize((int)Mesh.ArrayType.Max);
 
 Next create the arrays for each data type you will use.
@@ -123,10 +123,10 @@ Next create the arrays for each data type you will use.
 
  .. code-tab:: csharp C#
 
-    var verts = new List<Vector3>();
-    var uvs = new List<Vector2>();
-    var normals = new List<Vector3>();
-    var indices = new List<int>();
+    List<Vector3> verts = [];
+    List<Vector2> uvs = [];
+    List<Vector3> normals = [];
+    List<int> indices = [];
 
 Once you have filled your data arrays with your geometry you can create a mesh
 by adding each array to ``surface_array`` and then committing to the mesh.
@@ -196,14 +196,14 @@ Put together, the full code looks like:
     {
         public override void _Ready()
         {
-            var surfaceArray = new Godot.Collections.Array();
+            Godot.Collections.Array surfaceArray = [];
             surfaceArray.Resize((int)Mesh.ArrayType.Max);
 
             // C# arrays cannot be resized or expanded, so use Lists to create geometry.
-            var verts = new List<Vector3>();
-            var uvs = new List<Vector2>();
-            var normals = new List<Vector3>();
-            var indices = new List<int>();
+            List<Vector3> verts = [];
+            List<Vector2> uvs = [];
+            List<Vector3> normals = [];
+            List<int> indices = [];
 
             /***********************************
             * Insert code here to generate mesh.

tutorials/best_practices/data_preferences.rst

@@ -259,7 +259,7 @@ tree structures.
     {
         private TreeNode _parent = null;
 
-        private List<TreeNode> _children = new();
+        private List<TreeNode> _children = [];
 
         public override void _Notification(int what)
         {

tutorials/best_practices/godot_interfaces.rst

@@ -112,9 +112,9 @@ access.
         {
             if (EnemyScn == null)
             {
-                return new string[] { "Must initialize property 'EnemyScn'." };
+                return ["Must initialize property 'EnemyScn'."];
             }
-            return Array.Empty<string>();
+            return [];
         }
     }
 

tutorials/math/random_number_generation.rst

@@ -212,7 +212,7 @@ to do it for us:
  .. code-tab:: csharp
 
     // Use Godot's Array type instead of a BCL type so we can use `PickRandom()` on it.
-    private Godot.Collections.Array<string> _fruits = new Godot.Collections.Array<string> { "apple", "orange", "pear", "banana" };
+    private Godot.Collections.Array<string> _fruits = ["apple", "orange", "pear", "banana"];
 
     public override void _Ready()
     {
@@ -273,7 +273,7 @@ prevent repetition:
 
  .. code-tab:: csharp
 
-    private string[] _fruits = { "apple", "orange", "pear", "banana" };
+    private string[] _fruits = ["apple", "orange", "pear", "banana"];
     private string _lastFruit = "";
 
     public override void _Ready()
@@ -450,8 +450,8 @@ get a value from another array as follows:
     // Prints a random element using the weighted index that is returned by `RandWeighted()`.
     // Here, "apple" will be returned twice as rarely as "orange" and "pear".
     // "banana" is twice as common as "orange" and "pear", and four times as common as "apple".
-    string[] fruits = { "apple", "orange", "pear", "banana" };
-    float[] probabilities = { 0.5, 1, 1, 2 };
+    string[] fruits = ["apple", "orange", "pear", "banana"];
+    float[] probabilities = [0.5f, 1, 1, 2];
 
     var random = new RandomNumberGenerator();
     GD.Print(fruits[random.RandWeighted(probabilities)]);
@@ -501,7 +501,7 @@ ends up empty. When that happens, you reinitialize it to its default value:
 
  .. code-tab:: csharp
 
-    private Godot.Collections.Array<string> _fruits = new() { "apple", "orange", "pear", "banana" };
+    private Godot.Collections.Array<string> _fruits = ["apple", "orange", "pear", "banana"];
     // A copy of the fruits array so we can restore the original value into `fruits`.
     private Godot.Collections.Array<string> _fruitsFull;
 

tutorials/navigation/navigation_using_navigationmeshes.rst

@@ -434,13 +434,13 @@ The following script uses the NavigationServer to parse source geometry from the
             // If we did not parse a TileMap with navigation mesh cells we may now only
             // have obstruction outlines so add at least one traversable outline
             // so the obstructions outlines have something to "cut" into.
-            _sourceGeometry.AddTraversableOutline(new Vector2[]
-            {
+            _sourceGeometry.AddTraversableOutline(
+            [
                 new Vector2(0.0f, 0.0f),
                 new Vector2(500.0f, 0.0f),
                 new Vector2(500.0f, 500.0f),
                 new Vector2(0.0f, 500.0f),
-            });
+            ]);
 
             // Bake the navigation mesh on a thread with the source geometry data.
             NavigationServer2D.BakeFromSourceGeometryDataAsync(_navigationMesh, _sourceGeometry, _callbackBaking);
@@ -615,16 +615,16 @@ The following script uses the NavigationServer to update a navigation region wit
             NavigationServer2D.RegionSetMap(_regionRid, GetWorld2D().NavigationMap);
 
             // Add vertices for a convex polygon.
-            _navigationMesh.Vertices = new Vector2[]
-            {
+            _navigationMesh.Vertices =
+            [
                 new Vector2(0, 0),
                 new Vector2(100.0f, 0),
                 new Vector2(100.0f, 100.0f),
                 new Vector2(0, 100.0f),
-            };
+            ];
 
             // Add indices for the polygon.
-            _navigationMesh.AddPolygon(new int[] { 0, 1, 2, 3 });
+            _navigationMesh.AddPolygon([0, 1, 2, 3]);
 
             NavigationServer2D.RegionSetNavigationPolygon(_regionRid, _navigationMesh);
         }
@@ -680,16 +680,16 @@ The following script uses the NavigationServer to update a navigation region wit
             NavigationServer3D.RegionSetMap(_regionRid, GetWorld3D().NavigationMap);
 
             // Add vertices for a convex polygon.
-            _navigationMesh.Vertices = new Vector3[]
-            {
+            _navigationMesh.Vertices =
+            [
                 new Vector3(-1.0f, 0.0f, 1.0f),
                 new Vector3(1.0f, 0.0f, 1.0f),
                 new Vector3(1.0f, 0.0f, -1.0f),
                 new Vector3(-1.0f, 0.0f, -1.0f),
-            };
+            ];
 
             // Add indices for the polygon.
-            _navigationMesh.AddPolygon(new int[] { 0, 1, 2, 3 });
+            _navigationMesh.AddPolygon([0, 1, 2, 3]);
 
             NavigationServer3D.RegionSetNavigationMesh(_regionRid, _navigationMesh);
         }

tutorials/navigation/navigation_using_navigationobstacles.rst

@@ -81,13 +81,13 @@ Obstacles are not involved in the source geometry parsing so adding them just be
 
  .. code-tab:: csharp 2D C#
 
-    Vector2[] obstacleOutline = new Vector2[]
-    {
+    Vector2[] obstacleOutline
+    [
         new Vector2(-50, -50),
         new Vector2(50, -50),
         new Vector2(50, 50),
         new Vector2(-50, 50),
-    };
+    ];
 
     var navigationMesh = new NavigationPolygon();
     var sourceGeometry = new NavigationMeshSourceGeometryData2D();
@@ -123,13 +123,13 @@ Obstacles are not involved in the source geometry parsing so adding them just be
 
  .. code-tab:: csharp 3D C#
 
-    Vector3[] obstacleOutline = new Vector3[]
-    {
+    Vector3[] obstacleOutline =
+    [
         new Vector3(-5, 0, -5),
         new Vector3(5, 0, -5),
         new Vector3(5, 0, 5),
         new Vector3(-5, 0, 5),
-    };
+    ];
 
     var navigationMesh = new NavigationMesh();
     var sourceGeometry = new NavigationMeshSourceGeometryData3D();
@@ -234,13 +234,13 @@ For static use an array of ``vertices`` is required.
     NavigationServer2D.ObstacleSetRadius(newObstacleRid, 5.0f);
 
     // Use obstacle static by adding a square that pushes agents out.
-    Vector2[] outline = new Vector2[]
-    {
+    Vector2[] outline =
+    [
         new Vector2(-100, -100),
         new Vector2(100, -100),
         new Vector2(100, 100),
         new Vector2(-100, 100),
-    };
+    ];
     NavigationServer2D.ObstacleSetVertices(newObstacleRid, outline);
 
     // Enable the obstacle.
@@ -280,13 +280,13 @@ For static use an array of ``vertices`` is required.
     NavigationServer3D.ObstacleSetRadius(newObstacleRid, 5.0f);
 
     // Use obstacle static by adding a square that pushes agents out.
-    Vector3[] outline = new Vector3[]
-    {
+    Vector3[] outline =
+    [
         new Vector3(-5, 0, -5),
         new Vector3(5, 0, -5),
         new Vector3(5, 0, 5),
         new Vector3(-5, 0, 5),
-    };
+    ];
     NavigationServer3D.ObstacleSetVertices(newObstacleRid, outline);
     // Set the obstacle height on the y-axis.
     NavigationServer3D.ObstacleSetHeight(newObstacleRid, 1.0f);

tutorials/navigation/navigation_using_navigationservers.rst

@@ -169,14 +169,14 @@ Afterwards the function waits for the next physics frame before continuing with
             // Create a procedural navigation mesh for the region.
             var newNavigationMesh = new NavigationMesh()
             {
-                Vertices = new[]
-                {
+                Vertices =
+                [
                     new Vector3(0.0f, 0.0f, 0.0f),
                     new Vector3(9.0f, 0.0f, 0.0f),
                     new Vector3(0.0f, 0.0f, 9.0f),
-                },
+                ],
             };
-            int[] polygon = new[] { 0, 1, 2 };
+            int[] polygon = [0, 1, 2];
             newNavigationMesh.AddPolygon(polygon);
             NavigationServer3D.RegionSetNavigationMesh(region, newNavigationMesh);
 

tutorials/networking/http_client_class.rst

@@ -139,7 +139,11 @@ It will connect and fetch a website.
             Debug.Assert(http.GetStatus() == HTTPClient.Status.Connected); // Check if the connection was made successfully.
 
             // Some headers.
-            string[] headers = { "User-Agent: Pirulo/1.0 (Godot)", "Accept: */*" };
+            string[] headers =
+            [
+                "User-Agent: Pirulo/1.0 (Godot)",
+                "Accept: */*",
+            ];
 
             err = http.Request(HTTPClient.Method.Get, "/ChangeLog-5.php", headers); // Request a page from the site.
             Debug.Assert(err == Error.Ok); // Make sure all is OK.

tutorials/networking/http_request_class.rst

@@ -127,7 +127,7 @@ But what if you need to send data to the server? Here is a common way of doing i
     .. code-tab:: csharp
 
         string json = Json.Stringify(dataToSend);
-        string[] headers = new string[] { "Content-Type: application/json" };
+        string[] headers = ["Content-Type: application/json"];
         HttpRequest httpRequest = GetNode<HttpRequest>("HTTPRequest");
         httpRequest.Request(url, headers, HttpClient.Method.Post, json);
 
@@ -147,7 +147,7 @@ For example, to set a custom user agent (the HTTP ``User-Agent`` header) you cou
     .. code-tab:: csharp
 
         HttpRequest httpRequest = GetNode<HttpRequest>("HTTPRequest");
-        httpRequest.Request("https://api.github.com/repos/godotengine/godot/releases/latest", new string[] { "User-Agent: YourCustomUserAgent" });
+        httpRequest.Request("https://api.github.com/repos/godotengine/godot/releases/latest", ["User-Agent: YourCustomUserAgent"]);
 
 .. danger::
 

tutorials/physics/ray-casting.rst

@@ -224,7 +224,7 @@ from a CharacterBody2D or any other collision object node:
         {
             var spaceState = GetWorld2D().DirectSpaceState;
             var query = PhysicsRayQueryParameters2D.Create(globalPosition, playerPosition);
-            query.Exclude = new Godot.Collections.Array<Rid> { GetRid() };
+            query.Exclude = [GetRid()];
             var result = spaceState.IntersectRay(query);
         }
     }
@@ -263,7 +263,7 @@ member variable. The array of exceptions can be supplied as the last argument as
         {
             var spaceState = GetWorld2D().DirectSpaceState;
             var query = PhysicsRayQueryParameters2D.Create(globalPosition, targetPosition,
-                CollisionMask, new Godot.Collections.Array<Rid> { GetRid() });
+                CollisionMask, [GetRid()]);
             var result = spaceState.IntersectRay(query);
         }
     }

tutorials/scripting/c_sharp/c_sharp_exports.rst

@@ -518,12 +518,12 @@ The default value of Godot arrays is null. A different default can be specified:
 .. code-block:: csharp
 
     [Export]
-    public Godot.Collections.Array<string> CharacterNames { get; set; } = new Godot.Collections.Array<string>
-    {
+    public Godot.Collections.Array<string> CharacterNames { get; set; } =
+    [
         "Rebecca",
         "Mary",
         "Leah",
-    };
+    ];
 
 Arrays with specified types which inherit from resource can be set by
 drag-and-dropping multiple files from the FileSystem dock.
@@ -588,11 +588,11 @@ The default value of C# arrays is null. A different default can be specified:
 .. code-block:: csharp
 
     [Export]
-    public Vector3[] Vectors { get; set; } = new Vector3[]
-    {
+    public Vector3[] Vectors { get; set; } =
+    [
         new Vector3(1, 2, 3),
         new Vector3(3, 2, 1),
-    }
+    ];
 
 Setting exported variables from a tool script
 ---------------------------------------------

tutorials/scripting/cross_language_scripting.rst

@@ -212,7 +212,7 @@ to said method.
     // Outputs "Hello there!" twice, once per line.
     myGDScriptNode.Call("print_n_times", "Hello there!", 2);
 
-    string[] arr = new string[] { "a", "b", "c" };
+    string[] arr = ["a", "b", "c"];
     // Output: "a", "b", "c" (one per line).
     myGDScriptNode.Call("print_array", arr);
     // Output: "1", "2", "3"  (one per line).

tutorials/shaders/compute_shaders.rst

@@ -220,7 +220,7 @@ So let's initialize an array of floats and create a storage buffer:
  .. code-tab:: csharp
 
     // Prepare our data. We use floats in the shader, so we need 32 bit.
-    var input = new float[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+    float[] input = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
     var inputBytes = new byte[input.Length * sizeof(float)];
     Buffer.BlockCopy(input, 0, inputBytes, 0, inputBytes.Length);
 
@@ -251,7 +251,7 @@ assign it to a uniform set which we can pass to our shader later.
         Binding = 0
     };
     uniform.AddId(buffer);
-    var uniformSet = rd.UniformSetCreate(new Array<RDUniform> { uniform }, shader, 0);
+    var uniformSet = rd.UniformSetCreate([uniform], shader, 0);
 
 
 Defining a compute pipeline