garden_client/Assets/Script/Extension/ExAction.cs

using System;
using UnityEngine;

using System.Collections;
using System.Collections.Generic;

public static class ExAction 
{
    public static void SafeInvoke(this Action action)
    {
        if (action != null)
        {
            action.Invoke();
        }
    }

    public static void SafeInvoke(this Action<double> action, double arg)
    {
        if (action != null)
        {
            action.Invoke(arg);
        }
    }
}