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    TFPExprIdentifierDefs.AddFunction

    Add a function to the collection

    Declaration

    Source position: fpexprpars.pp line 596

    public 
function AddFunction(const AName: ShortString; 
                    const AResultType: AnsiChar; 
                    const AParamTypes: AnsiString; 
                    ACallBack: TFPExprFunctionCallBack)
                     : TFPExprIdentifierDef;

function AddFunction(const AName: ShortString; 
                    const AResultType: AnsiChar; 
                    const AParamTypes: AnsiString; 
                    ACallBack: TFPExprFunctionEvent)
                     : TFPExprIdentifierDef;

function AddFunction(const AName: ShortString; 
                    const AResultType: AnsiChar; 
                    const AParamTypes: AnsiString; 
                    ANodeClass: TFPExprFunctionClass)
                     : TFPExprIdentifierDef;

    Description

    The AddFunction method creates and adds a new function identifier to the collection with the specified name, parameter types, result type, and implementation details. The function becomes available for use in expressions parsed by this identifier collection.