C#

Front 1

What's the difference between properties and fields in a class?

Back 1

Properties are public and have getters and/or setters. Fields are private.

Front 2

By convention, what types of objects use camel case?

Back 2

Fields, variables, parameters

Front 3

By convention, what types of objects are Pascal case?

Back 3

Classes, properties, constants

Front 4

What are the four types of properties?

Back 4

Full, Automatic, Read Only, Read Only with Initialization

Front 5

What is a full property?

Back 5

One where everything is explicitly written. E.g.,

public string Name {

get {return name;}

set {name = value;}

}

Front 6

What is an automatic property?

Back 6

One where the compiler takes care of the getter and setter. E.g.,

public string Name {get; set;}

Front 7

What is a read only property?

Back 7

One which only has a setter.

Front 8

What syntax is used to initialize a property?

Back 8

public string Name {get;} = "John";

Front 9

Does a constructor have any return value?

Back 9

No, not even void.

Front 10

If you've defined a constructor that takes parameters but not a default constructor, will the compiler create a default constructor for you?

Back 10

No, the compiler will only generate a default constructor if no constructors were explicitly defined.

Front 11

How do you indicate a derived class?

Back 11

Place a colon and the parent class name after the class name in the class definition.

Front 12

True or false. To override a method in a base class, define a new method in the derived class with the same paramaters and return type.

Back 12

False. You must also use the override keyword before the method name.

Front 13

How do you pass a parameter directly to the base class?

Back 13

After the closing parenthesis of the parameter list put this -

:base(parameters from parameter list to be passed to base class here)

Front 14

What is the convention for naming an interface?

Back 14

Interfaces should start with a capital I.

Front 15

What methods of an object can you access if you declare a variable as an interface type?

Back 15

Only the methods defined in the interface.

E.g., if you declare

IStorable a = new Document();

then you can only access the methods of document that were defined in the IStorable interface.

Front 16

Should you mark methods defined in an interface as public or private?

Back 16

No, you can't specify whether methods defined in an interface are public or private.

Front 17

If a property and field have the same name and capitalization, how can you differentiate between them?

Back 17

Use "this.field" to reference the field and "field" to reference the property.

Front 18

You declare a method in a child class with the same signature as a method in the base class. The method in the base class is not marked as virtual, abstract or override.Will you get any compiler errors/warnings or run-time errors?

Back 18

You'll get a compiler warning that the method hides a method in the base class.

Front 19

You declare a method in a child class with the same signature as a method in the base class. The method in the base class is not marked as virtual, abstract or override. What happens if you declare a variable as an object of the base class type and call that method?

Back 19

It will call the method in the base class?