C# (CSharp) Nullable.Add Exemples

Exemple #1

        public static Nullable <Tbase> Sum <Tobj, Tbase>(this IEnumerable <Tobj> lista, Func <Tobj, Nullable <Tbase> > prop) where Tobj : class where Tbase : struct
        {
            Nullable <Tbase> soma = null;

            foreach (var obj in lista)
            {
                soma = soma.Add(prop.Invoke(obj));
            }

            return(soma);
        }