NullableSum
Takes an array of nullable values and sums them up. Can be easily replaced with int?
Source
public static double? NullableSum(this IEnumerable<double?> source)
{
double? sum = null;
foreach (var v in source)
{
if (v == null) continue;
if (sum == null)
{
sum = 0;
}
sum += v.GetValueOrDefault();
}
return sum;
}Example
var myNumbers = new List<double?>
{
null,1,2
};
Assert.AreEqual(3, myNumbers.NullableSum());