Class TCustomHufExpression

Unit

GIS_Functions

Declaration

type TCustomHufExpression = class(TExpression)

Description

TExpression is the compiled version of an Expression generated by the TRbwParser.Compile method.

It can be evaluated by using the Evaluate method and the result can then be read using the BooleanResult method, DoubleResult method, IntegerResult method, or StringResult method. The correct one to read can be determined from the ResultType property.

Every instance of TExpression is owned by the instance of TRbwParser that compiled it.

Hierarchy

• TObject
• TConstant
• TCustomValue
• TExpression
• TCustomHufExpression

Overview

Methods

function UsesVariable(const Variable: TCustomVariable): boolean; override;

Description

Methods

	function UsesVariable(const Variable: TCustomVariable): boolean; override;