How to Declare a Constant Record in Delphi

Record data types in Delphi represent a mixed set of elements. Each element is called a field; the declaration of a record type specifies a name and type for each field.

Constant Record

To create a constant or "read-only" record, use the next "initialization":

 //record declaration
 type
   TDeveloper = record
     Language : string;
     Experience : integer;
     Salary : Currency;
   end;
 
 ... 
 //"DelphiDeveloper" TDeveloper constant
 const
   DelphiDeveloper : TDeveloper =
       (
         Language : 'Delphi';
         Experience : 15;
         Salary : 200000
       ) ;
 

Note that if you try to assign a different value to any of the fields of the constant "DelphiDeveloper", you will get a compile time exception:

 begin
   //compile time exception:
   "Left side cannot be assigned to"
   DelphiDeveloper.Language := 'C#'
 end;
 

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