Comparison with default(T)
I was working on a generic class that I had limited towhere : class because I wanted to use null as valid return value. Well, then I needed to use the class on Guid, which is a value type. So I replaced all return null with return default(T). That was fine except for my Enumerator which used null to yield break out of the iteration. Unfortunately
if(t == default(T)) {
yield break;
}
if(t.Equals(default(T))) {
yield break;
}
NullArgumentException, since I am after all looking for a null value.
After some digging I finally came across the solution:
if(Comparer<T>.Default.Compare(t, default(T)) == 0) {
yield break;
}
posted by ether @ 3:18 PM
2 comments
