Table of Delphi keywords and Descriptions

Table of Delphi keywords and Descriptions

Delphi Keywords   Table of Delphi keywords and Descriptions. Delphi was a language developed by the Borland Corporation in the 1990’s. It is an object oriented language that resembles Pascal. The Delphi keywords reflect it’s origins as an off shoot of the Pascal language. The following Delphi keywords are the building blocks of the programming language. A Delphi program is constructed by creating a syntactically and procedurally correct program file that can be compiled by the Delphi compiler. Code Description And Boolean and or bitwise and of two arguments Array A data type holding indexable collections of data As Used for casting object references Begin Keyword that starts a statement block Case A mechanism for acting upon different values of an Ordinal Class Starts the declaration of a type of object class Const Starts the definition of fixed data values Constructor Defines the method used to create an object from a class Destructor Defines the method used to destroy an object Div Performs integer division, discarding the remainder Do Defines the start of some controlled action DownTo Prefixes an decremental for loop target value Else Starts false section of if, case and try statements End Keyword that terminates statement blocks Except Starts the error trapping clause of a Try statement File Defines a typed or untyped file Finally Starts the unconditional code section of a Try statement For Starts a loop that executes a finite number of times Function Defines a subroutine that returns a value Goto Forces a jump to a label, regardless of nesting If Starts a conditional expression to determine what to do next Implementation Starts the implementation (code) section of a Unit In Used to test if a value is a member of a set Inherited Used to call the parent class constructor or destructor method Interface Used for Unit external definitions, and as a Class skeleton Is Tests whether an object is a certain class or ascendant Mod Performs integer division, returning the remainder Not Boolean Not or bitwise not of one arguments Object Allows a subroutine data type to refer to an object method Of Linking keyword used in many places On Defines exception handling in a Try Except clause Or Boolean or or bitwise or of two arguments Packed Compacts complex data types into minimal stor Procedure Defines a subroutine that does not return a value Program Defines the start of an application Property Defines controlled access to class fields Raise Raise an exception Record A structured data type - holding fields of data Repeat Repeat statements until a ternmination condition is met Set Defines a set of up to 255 distinct values Shl Shift an integer value left by a number of bits Shr Shift an integer value right by a number of bits Then Part of an if statement - starts the true clause ThreadVar Defines variables that are given separate instances per thread To Prefixes an incremental for loop target value Try Starts code that has error trapping Type Defines a new category of variable or process Unit Defines the start of a unit file - a Delphi module Until Ends a Repeat control loop Uses Declares a list of Units to be imported Var Starts the definition of a section of data variables While Repeat statements whilst a continuation condition is met With A means of simplifying references to structured variables Xor Boolean Xor or bitwise Xor of two arguments