static void Main()
{
var m = new Func <int>(() => 1);
var vg = m.ToFirstUse();
var v = vg.Value;
int i = vg;
int? foo = 1;
var f3 = foo + 2;
FirstUse <int> bi = (Func <int>)(() => 1);
int f4 = 1 + bi;
int f5 = (int)new Nullable <int>(f4).ToFirstUseN();
int f6 = (int)((int?)f4).ToFirstUseN();
}
/// <summary>
/// Makes an Initializer to be called only on first use
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="func"></param>
/// <returns></returns>
public static FirstUse <T> ToFirstUse <T>(this FirstUse <T> func)
{
return(func);
}