BanksySan

using static System.Console;
using System;

public static class Constants
{
    private const double PI = 3.14;
    public static double PI_1 = PI;
    public static readonly double PI_2 = PI;
    public static double PI_3 {get;} = PI;
    public static double PI_4 = PI;

BanksySan

using static System.Console;
using System;

public class Constants
{
    public const double PI = 3.1415;
}

public static class Program
{

BanksySan

using static System.Console;

public static class Program
{
    private static void Main()
    {
        WriteLine($"π = {Constants.PI}");
    }
}

BanksySan

using static System.Console;
using System;

public class Constants
{
    public const double PI = Math.PI;
}

public static class Program
{

BanksySan

WriteLine("Hello World!");
WriteLine("Hello World!");

BanksySan

using UnityEngine;
using static UnityEditor.Handles;
using static UnityEngine.Color;
using static UnityEngine.Gizmos;

[ExecuteAlways]
[RequireComponent(typeof(Renderer))]
public class MarkCenterAndExtents : MonoBehaviour
{
    private const float RADIUS = 0.02f;

BanksySan

{
  "dependencies": {
    "com.unity.2d.animation": "3.2.1",
    "com.unity.2d.pixel-perfect": "2.0.4",
    "com.unity.2d.sprite": "1.0.0",
    "com.unity.2d.spriteshape": "3.0.10",
    "com.unity.2d.tilemap": "1.0.0",
    "com.unity.cinemachine": "2.5.0",
    "com.unity.ide.rider": "1.1.4",
    "com.unity.progrids": "3.0.3-preview.6",

BanksySan

using UnityEngine;
using static UnityEditor.Handles;
using static UnityEngine.Color;
using static UnityEngine.Gizmos;

[ExecuteAlways]
[RequireComponent(typeof(Renderer))]
public class MarkCenterAndExtents : MonoBehaviour
{
    private const float RADIUS = 0.02f;

BanksySan

IL_0000: ldarg.0
IL_0001: ldfld        class BanksySan.Blog.Performance.Child BanksySan.Blog.Performance.Casting::_child
IL_0006: castclass    BanksySan.Blog.Performance.Parent
IL_000b: ret

BanksySan

public class Casting
{
    private Child _child;

    private Parent _parent;

    [GlobalSetup]
    public void GlobalSetup()
    {
        _parent = new Parent();