MaterializedArray is a Sendable MLXArray

- once an array has been evaluated we can use it as Sendable
- a subtype of MLXArray that is Sendable

Author: davidkoski

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.12
+// swift-tools-version: 6.2
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 // Copyright © 2024 Apple Inc.
 

Source/MLX/MLXArray+Indexing.swift

@@ -388,8 +388,7 @@ extension MLXArray {
                 var result = mlx_array_new()
                 mlx_scatter(
                     &result, self.ctx, indices_vector, update.ctx, axes, axes.count, stream.ctx)
-                mlx_array_set(&self.ctx, result)
-                mlx_array_free(result)
+                self._updateInternal(MLXArray(result))
                 return
             } else {
                 self._updateInternal(update)