ARP_HEADER

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct ARP_HEADER
{
    public ushort HardwareAddressSpace;
    public ushort ProtocolAddressSpace;
    public byte HardwareAddressLength;
    public byte ProtocolAddressLength;
    public ushort Opcode;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)] public byte[] SenderHardwareAddress;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure ARP_HEADER
    Public HardwareAddressSpace As UShort
    Public ProtocolAddressSpace As UShort
    Public HardwareAddressLength As Byte
    Public ProtocolAddressLength As Byte
    Public Opcode As UShort
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=1)> Public SenderHardwareAddress() As Byte
End Structure

import ctypes
from ctypes import wintypes

class ARP_HEADER(ctypes.Structure):
    _fields_ = [
        ("HardwareAddressSpace", ctypes.c_ushort),
        ("ProtocolAddressSpace", ctypes.c_ushort),
        ("HardwareAddressLength", ctypes.c_ubyte),
        ("ProtocolAddressLength", ctypes.c_ubyte),
        ("Opcode", ctypes.c_ushort),
        ("SenderHardwareAddress", ctypes.c_ubyte * 1),
    ]

#[repr(C)]
pub struct ARP_HEADER {
    pub HardwareAddressSpace: u16,
    pub ProtocolAddressSpace: u16,
    pub HardwareAddressLength: u8,
    pub ProtocolAddressLength: u8,
    pub Opcode: u16,
    pub SenderHardwareAddress: [u8; 1],
}

import "golang.org/x/sys/windows"

type ARP_HEADER struct {
	HardwareAddressSpace uint16
	ProtocolAddressSpace uint16
	HardwareAddressLength byte
	ProtocolAddressLength byte
	Opcode uint16
	SenderHardwareAddress [1]byte
}

type
  ARP_HEADER = record
    HardwareAddressSpace: Word;
    ProtocolAddressSpace: Word;
    HardwareAddressLength: Byte;
    ProtocolAddressLength: Byte;
    Opcode: Word;
    SenderHardwareAddress: array[0..0] of Byte;
  end;

const ARP_HEADER = extern struct {
    HardwareAddressSpace: u16,
    ProtocolAddressSpace: u16,
    HardwareAddressLength: u8,
    ProtocolAddressLength: u8,
    Opcode: u16,
    SenderHardwareAddress: [1]u8,
};

type
  ARP_HEADER {.bycopy.} = object
    HardwareAddressSpace: uint16
    ProtocolAddressSpace: uint16
    HardwareAddressLength: uint8
    ProtocolAddressLength: uint8
    Opcode: uint16
    SenderHardwareAddress: array[1, uint8]

struct ARP_HEADER
{
    ushort HardwareAddressSpace;
    ushort ProtocolAddressSpace;
    ubyte HardwareAddressLength;
    ubyte ProtocolAddressLength;
    ushort Opcode;
    ubyte[1] SenderHardwareAddress;
}