Migration from 4.x

Some features from 4.x are replaced by native language constructs from C# 12 or by API from .NET 8. For instance, OneDimensionalArray is completely removed in favor of collection literals. FirstOrNone or FirstOrNull extension methods are removed in favor of list patterns.

Core library

BufferHelpers divided into the following classes: CharBuffer, ByteBuffer, and Memory static classes. MemoryAllocator static class merged with Memory static class. AllocateAtLeast and AllocateExactly static methods are introduced in favor of bool exactSize parameter.

Removed `AsyncDelegate`` in favor of TaskToAsyncResult.

Some methods in BinaryTransformations are removed in favor of BinaryPrimitives.ReverseEndianness methods.

Reference<T> is removed without alternative API as too specific type.

Sequence static class merged with List, Collection, AsyncEnumerable, and Enumerator static classes.

DotNext.Generic namespace is completely removed in favor of static abstract interface members. Now generic constant can be emulated as follows:

public interface IConstant<T>
{
    static abstract T Value { get; }
}

Buffers

UnmanagedMemoryAllocator is replaced by UnmanagedMemory.

IUnmanagedMemoryOwner is replaced by IUnmanagedMemory.

IO

IAsyncBinaryReader and IAsyncBinaryWriter interfaces are redesigned to utilize Generic Math features.

Interop Services

AtomicPointer is completely removed. Use Pointer<T>.Value instead.

Raft

UDP transport support is completely removed. Use TCP instead.

Reflection

DotNext.Reflection library is no longer supported and removed. See this announcement.