using System;

public class Program

{

    public static void Main()

    {

        for (int i = 0; i < 100; i++)

        {

            var f = 32f;

            if (!SetStruct<float>(ref f, 45f))

            {

                Console.WriteLine("Some message");

            }

        }

    }

    public static bool SetStruct<T>(ref T currentValue, T newValue) where T : struct

    {

        if(currentValue.Equals(newValue))

            return false;

​

        currentValue = newValue;

        return true;

    }

}