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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