| public AddPerson ( IssuesWithNonGenericCollections.Person p ) : void | ||
| p | IssuesWithNonGenericCollections.Person | |
| Результат | void | |
static void UsePersonCollection()
{
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Hommer", "Simpson", 40));
myPeople.AddPerson(new Person("Marge", "Simpson", 38));
myPeople.AddPerson(new Person("Lisa", "Simpson", 9));
myPeople.AddPerson(new Person("Bart", "Simpson", 7));
myPeople.AddPerson(new Person("Maggie", "Simpson", 2));
foreach (Person p in myPeople)
{
Console.WriteLine(p);
}
}
static void UserPersonCollection()
{
Console.WriteLine("***** Custom Person Collection *****\n");
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person(40, "Homer", "Simpson"));
myPeople.AddPerson(new Person(38, "Marge", "Simpson"));
myPeople.AddPerson(new Person(9, "Lisa", "Simpson"));
myPeople.AddPerson(new Person(7, "Bart", "Simpson"));
myPeople.AddPerson(new Person(2, "Maggie", "Simpson"));
//myPeople.AddPerson("Firstname Lastname");
foreach (Person p in myPeople)
{
Console.WriteLine(p);
}
}
private static void UsePersonCollection()
{
Console.WriteLine("****** Custom Person Collection ******\n");
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Homer", "Simpson", 40));
myPeople.AddPerson(new Person("Marge", "Simpson", 38));
myPeople.AddPerson(new Person("Lisa", "Simpson", 9));
myPeople.AddPerson(new Person("Bart", "Simpson", 7));
myPeople.AddPerson(new Person("Maggie", "Simpson", 2));
// This would be a compile-time error!
// myPeople.AddPerson(new Car());
foreach (Person p in myPeople)
{
Console.WriteLine(p);
}
Console.WriteLine();
}
static void UsePersonCollection()
{
Console.WriteLine("***** Custom Person Collection *****\n");
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Homer", "Simpson", 40));
myPeople.AddPerson(new Person("Marge", "Simpson", 38));
myPeople.AddPerson(new Person("Lisa", "Simpson", 9));
myPeople.AddPerson(new Person("Bart", "Simpson", 7));
myPeople.AddPerson(new Person("Maggie", "Simpson", 2));
// 这会产生编译时错误
// myPeople.AddPerson(new Car());
foreach (Person p in myPeople)
{
Console.WriteLine(p);
}
}
static void Main(string[] args)
{
Console.WriteLine("**** Custom Person Collection ****\n");
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Homer", "Simpson", 40));
myPeople.AddPerson(new Person("Marge", "Simpson", 38));
myPeople.AddPerson(new Person("Lisa", "Simpson", 9));
myPeople.AddPerson(new Person("Bart", "Simpson", 7));
myPeople.AddPerson(new Person("Maggie", "Simpson", 2));
myPeople.AddPerson(new Person("Rafael", "Pimentel", 20));
foreach (Person p in myPeople)
{
Console.WriteLine(p);
}
Console.WriteLine();
Console.WriteLine("**** Fun wih Generics ****\n");
List <Person> morePeople = new List <Person>();
morePeople.Add(new Person("Frank", "Black", 50));
Console.WriteLine(morePeople[0]);
//This list can only hold integers
List <int> moreInts = new List <int>();
moreInts.Add(10);
moreInts.Add(20);
int sum = moreInts[0] + moreInts[1];
Console.WriteLine($"sum: {sum}");
Console.ReadKey();
}
static void UsePersonCollection() {
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Homer"));
myPeople.AddPerson(new Person("Mary"));
myPeople.AddPerson(new Person("Lisa"));
myPeople.AddPerson(new Person("Bart"));
myPeople.AddPerson(new Person("Maggie"));
//myPeople.AddPerson(new OperatingSystem(PlatformID.MacOSX, new Version(10, 0))); ERROR
foreach (Person p in myPeople) { //Works without casting here
Console.WriteLine(p);
}
try {
foreach (int p in myPeople) { //Runtime error
// Console.WriteLine(p);
}
} catch (InvalidCastException ex) {
Console.WriteLine(ex.Message);
}
Console.WriteLine();
}
static void UsePersonCollection()
{
Console.WriteLine("***** Custom Person Collection *****\n");
PersonCollection myPeople = new PersonCollection();
myPeople.AddPerson(new Person("Homer", "Simpson", 40));
myPeople.AddPerson(new Person("Marge", "Simpson", 38));
myPeople.AddPerson(new Person("Lisa", "Simpson", 9));
myPeople.AddPerson(new Person("Bart", "Simpson", 7));
myPeople.AddPerson(new Person("Maggie", "Simpson", 2));
// This would be a compile-time error!
// myPeople.AddPerson(new Car());
foreach (Person p in myPeople)
Console.WriteLine(p);
}