TFPExprIdentifierDefs.AddVariable function

Member of TFPExprIdentifierDefspublicIn unit fpExprPars

Add a variable to the identifier collection

Declaration

pascal

function AddVariable(const AName: ShortString; 
 AResultType: TResultType; 
 ACallback: TFPExprVariableCallBack)
: TFPExprIdentifierDef
function AddVariable(const AName: ShortString; 
 AResultType: TResultType; 
 ACallback: TFPExprVariableEvent)
: TFPExprIdentifierDef
function AddVariable(const AName: ShortString; 
 AResultType: TResultType; const AValue: AnsiString)
: TFPExprIdentifierDef

Arguments

`AName`	The name of the variable
`AResultType`	The result type of the variable
`ACallback`	The callback for variable evaluation
`AValue`	The value of the variable

Function result

Returns the added variable identifier

Description

The AddVariable method creates and adds a new variable identifier to the collection with the specified name and value. The variable can then be referenced in expressions by its name to retrieve the stored value.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.