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