Safe Conversion of NativeArray <-> byte[] in Unity

NativeArrayExtension.cs

using Unity.Collections;

public static class NativeArrayExtension
{
    public static byte[] ToRawBytes<T>(this NativeArray<T> arr) where T : struct
    {
        var slice = new NativeSlice<T>(arr).SliceConvert<byte>();
        var bytes = new byte[slice.Length];
        slice.CopyTo(bytes);
        return bytes;
    }

    public static void CopyFromRawBytes<T>(this NativeArray<T> arr, byte[] bytes) where T : struct
    {
        var byteArr = new NativeArray<byte>(bytes, Allocator.Temp);
        var slice = new NativeSlice<byte>(byteArr).SliceConvert<T>();

        UnityEngine.Debug.Assert(arr.Length == slice.Length);
        slice.CopyTo(arr);
    }
}