Delphi Basics : Of command

DelphiBasics

Of
Keyword

Linking keyword used in many places

keyword Of(1 Case variable Of ...
2 type name = Set Of range;
3 type name = Class Of class type;
4 var name : Array Of type;
5 var name : File Of type;

Description

The Of keyword is used as a link in a number of Delphi declarations.

Related commands

Array		A data type holding indexable collections of data
Case		A mechanism for acting upon different values of an Ordinal
Class		Starts the declaration of a type of object class
File		Defines a typed or untyped file
Set		Defines a set of up to 255 distinct values

Download this web site as a Windows program.

Example code : A simple example

var
  letters : set Of 'a'..'z';

begin
  // Set all of the set values on
  letters := ['a'..'z'];

  // See if a letter is lower case
  if 'g' in letters
  then ShowMessage('g is a lower case letter')
  else ShowMessage('g is not a lower case letter');
end;

Show full unit code

g is a lower case letter