Section 1
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Static
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Date created
Mar 1, 2020
Cards (67)
Section 1
(50 cards)
Static
A modifier used to create data and functions that can be accessed without creating an instance of the class. Can be used to separate data and behavior that is independent of any object identity: the data and functions do not change regardless of what happens to the object.
try-catch-finally
An exception handling statement where code is executed in the first block, any exceptions are handled in the second block, and resources are released in the final block.
Int
A value type with a range of -2,147,483,648 to 2,147,483,647.
Public
Keyword with the most permissive access level. There are no restrictions on accessing these members.
Class
Defines the data and behavior of a type, like a blueprint. Must have at least one method and one field. Classes can be such as a integer class.
Switch
A selection statement that transfers control to the case section whose label contains a constant value that matches the value of the expression evaluated.
Void
The return type for a method that does not return a value.
Byte
A value type with a range of 0 to 255.
Private
Keyword with the least permissive access level. Members are accessible only within the body of the class or the struct in which they are declared.
Variable
Word (storage location) that holds a value. The data type and name must be declared in a statement. Must be explicitly declared before use. Uses CamelCase notation.
Interface
Contains only the signatures of methods, delegates or events. The implementation of the methods is done in the class that implements this. Is a contract.
Decimal
A 128-bit value data type with great precision and a range which makes it appropriate for financial and monetary calculations.
Property
A member that provides read and/or write access to a private field. Contains get/set accessors.
Char
A value type that represents a Unicode character.
For
Executes a block repeatedly until a specified expression evaluates to false. This loop is handy for iterating over arrays and for sequential processing. (Hint: More compact version of another iteration statement.)
Method
A code block containing a series of statements. Takes an input, performs some action, and sometimes produces an output. Something an object can do.
Stack
Block of memory allocated when a program is executed, is sequential (LIFO), and used for value data types (e.g., int).
Operator
Symbol which transforms and combines expressions
Member
Represents the data or behavior of a class or struct (e.g., field, property, method, constant, event, etc.).
Assembly
Compilation of classes. In C#, usually ends in .dll or .exe
Bool
A value type that evaluates to true or false.
Argument
The value of the parameter passed to a method. Information given to methods for manipulation.
Override
A modifier used with a method, a property, an indexer, or an event to create a new implementation of a virtual member inherited from a base class. Must have the same signature.
Constructor
Class method that has the same name as the class, is executed when an object is created, and can set default values for the object.
Access Modifier
Keyword used to specify the declared accessibility of a member or a type.
Object
Instance of a type/class created when a program runs. Can be visible or invisible. Has properties, events and methods.
Protected
Keyword where members are accessible from within the class in which it is declared, and from within any class derived from the class that declared this member.
Heap
Block of memory allocated on the fly when the 'new' operator is called, or with reference data types (e.g., strings).
Abstract
A modifier used in a class declaration to indicate that the class is intended only to be a base class of other classes and cannot be instantiated.
Parameter
Used to pass values or variable references into a method.
Overloading
Using the same name for multiple class methods within the same class but with different parameters.
Expression
A sequence of one or more operands and zero or more operators that can be evaluated to a single value, object, method, or namespace.
Keyword
Name reserved by the compiler that coders are not allowed to use as identifier.
Foreach
Statement used to iterate through every element in an array or collection. Should not be used to change the contents of the collection to avoid unpredictable side effects.
Const
A modifier used with a declaration of a field or local variable, and specifying the value of which cannot be modified.
Array
A data structure that contains several variables of the same type. Can be Single-Dimensional, Multidimensional or Jagged.
Virtual
A modifier used with a method or property declaration, the implementation of which can be changed by an overriding member in a derived class. When invoked, the run-time type of the object is checked for an overriding member.
Encapsulation
A characteristic of OOP that restricts access to class members to prevent users from misusing objects. While hiding the internal functionalities, it allows the class to service requests or modify its code to suit changing requirements. *It is a technique of packaging an objects attributes and methods into a cohesive unit that can be used as a undivided entity.
Do-While
Executes a block repeatedly until a specified expression evaluates to false, but is always executed once before the conditional expression is evaluated.
Inheritance
A characteristic of OOP that allows the creation of new classes that reuse, extend, and modify the behavior that is defined in other classes. Implemented with a colon followed by the parent class (e.g., public class B : A)
Namespace
Groups classes together so that they have a unique identifier. like .WriteLine()
Polymorphism
A characteristic of OOP that allows objects belonging to different types to respond to method, field, or property calls of the same name, each one according to an appropriate type-specific behavior (speak()!). Uses the same public interface for different types.
Field
Variable of any type, declared directly in a class. Should be private or protected, and store data needed by more than one method.
Indexer
Allows an instance of a class or struct to behave like an array. Resembles a property except that its accessors take parameters. Defined with this and value keywords.
If-else
A selection statement that identifies which block of code to run based on the value of a Boolean expression.
Struct
A value type that can behave like a class but is instatiated on the stack, is lightweight, and is passed by value instead of reference.
Generic
A way to create a collection that is type-safe at compile-time (as opposed to casting types to and from the universal base type Object). Defined with a <T>.
Collection
A specialized class for data storage and retrieval. Provides support for stacks, queues, lists, and hash tables, increased type-safety and better performance.
Internal
Keyword where members are accessible only within files in the same assembly.
While
Executes a block repeatedly until a specified expression evaluates to false. (Hint: Less compact version of another iteration statement.)
Section 2
(17 cards)