Event/Messaging system for C# - strongly typed

Messaging.cs

// Created by lordofduct - https://forum.unity.com/threads/recommended-event-system.856294/#post-5644981
//
// Usage example:
//
// public delegate void OnDiedEvent(GameObject go);
//
// Messaging<OnDiedEvent>.Trigger?.Invoke(gameObject);
//
// Messaging<OnDiedEvent>.Register(go => {
//     Debug.Log($"{go.name} died.");
// });

using System;

public static class Messaging<T> where T : System.Delegate
{
	public static void Register(T callback) => Trigger = System.Delegate.Combine(Trigger, callback) as T;
	public static void Unregister(T callback) => Trigger = System.Delegate.Remove(Trigger, callback) as T;
	public static T Trigger { get; private set; }
}