ConverAll & Exists

一： ConverAll

2.0

  public static Uri[] Convert(string[] baseAddresses)
        {
            Converter<string, Uri> convert = delegate(string address)
            {
                return new Uri(address);
            };

            return Array.ConvertAll(baseAddresses, convert);
        }

3.0?

二： Exists

2.0

 string[] students = {"Anders", "Jeff" };
            Predicate<string> anders = delegate(string name)
                                                {
                                                    return name == "Anders";
                                                };
            return Array.Exists(students, anders);

3.0

 string[] students = { "Anders", "Jeff" };
            return students.Any(name => name == "anders");