Nullable types: better way to check for null or zero in c#

Question

I\'m working on a project where i find i\'m checking for the following in many, many places:

if(item.Rate == 0 || item.Rate == null) { }

mo

Answer 1

One step further from Joshua Shannon's nice answer. Now with preventing boxing/unboxing:

public static class NullableEx
{
    public static bool IsNullOrDefault(this T? value)
        where T : struct
    {
        return EqualityComparer.Default.Equals(value.GetValueOrDefault(), default(T));
    }
}