Unit 'fpexprpars'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Index]	[#fcl]

TFPExprIdentifierDefs.AddVariable

Add a variable to the identifier collection

Declaration

Source position: fpexprpars.pp line 587

public function TFPExprIdentifierDefs.AddVariable(

const AName: ShortString;

AResultType: TResultType;

ACallback: TFPExprVariableCallBack

):TFPExprIdentifierDef; function TFPExprIdentifierDefs.AddVariable(

const AName: ShortString;

AResultType: TResultType;

ACallback: TFPExprVariableEvent

):TFPExprIdentifierDef; function TFPExprIdentifierDefs.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

Function result

Returns the added variable identifier

Arguments

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

Arguments

`AName`		The name of the variable
`AResultType`		The result type of the variable
`AValue`		The value of the variable

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.