public void InterfacesInCollection()
{
Orange orange = new Orange();
// Var allows different fruits using the IFruit interface to exist together
var fruitSalad = new List <IFruit>
{
new Banana(),
new Orange(),
orange
};
// Orange exclusive methods still accessible outside of IFruit collection
orange.Squeeze();
foreach (var fruit in fruitSalad)
{
Console.WriteLine(fruit.Name);
Console.WriteLine(fruit.Peel());
//fruit.squeeze
// 'Squeeze' No longer accessible once in a collection
Assert.IsInstanceOfType(fruit, typeof(IFruit));
}
Assert.IsInstanceOfType(orange, typeof(Orange));
}
public void CallingInterfaceMethods()
{
// New up an instance of an Ifruit
IFruit fruit = new Orange(); //calling just Ifruit props , not banana or orange
// we can change new Banana to Orange or grape and get new output for everything
string output = fruit.Peel();
Console.WriteLine(output);
Console.WriteLine($"The {fruit.Name} is peeled: " + fruit.Peeled);
var fruits = new Orange(); // but from here I can call orange sqeeze method, because "var" not Ifruit.
fruits.Squeeze();
}
public void InterfacesInCollections()
{
var orange = new Orange(); //could put Orange in place of var but did that so this is dry code
var fruitSalad = new List <IFruit>();
fruitSalad.Add(orange);
fruitSalad.Add(new Banana());
fruitSalad.Add(new Grape());
foreach (var fruit in fruitSalad)
{
Console.WriteLine(fruit.Name);
Console.WriteLine(fruit.Peel());
}
Console.WriteLine(orange.Squeeze()); //can't go inside of foreach loop because fruit in the foreach loop is of type IFruit
}
public void InterfacesInCollections()
{
var orange = new Orange();
var fruitSalad = new List <IFruit>();
fruitSalad.Add(orange);
fruitSalad.Add(new Banana());
fruitSalad.Add(new Grape());
foreach (var fruit in fruitSalad)
{
Console.WriteLine(fruit.Name);
Console.WriteLine(fruit.Peel());
}
Console.WriteLine(orange.Squeeze()); //this can be called directly because it is only in orange class. can't be part of the foreach loop
}
public void InterfacesInCollections()
{
var orange = new Orange();
var fruitSalad = new List <IFruit>();
fruitSalad.Add(orange);
fruitSalad.Add(new Banana());
fruitSalad.Add(new Grape());
foreach (var fruit in fruitSalad)
{
Console.WriteLine(fruit.Name);
Console.WriteLine(fruit.Peel());
}
Console.WriteLine(orange.Squeeze());
}