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• Delphi - TPerlRegEx / RegExBuddy Problem

  - by Brad

  I've got a problem with RegEx and Delphi 2k9 (Win32). I get the following Error: First chance exception at $7C812AFB. Exception class Exception with message 'TPerlRegEx.Compile() - Please specify a regular expression in RegEx first'. I've got the latest version of TPerlRegEx from the website. Using its defualt settings (Using DLL) I'm including demo source code. It's using the code generated by RegExBuddy, latest version. http://www.4shared.com/file/236428923/97478b61/googleresultstestdata.html http://www.4shared.com/file/236439483/e0acbe6d/Unit2.html Delphi FORM http://www.4shared.com/file/236439473/6734a2a2/Unit2.html Delphi PAS Thanks for any help -Brad Data is from Google External Keyword Tool RegEx could use some refinement... but works in RegExBuddy not in Delphi unit Unit2; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, PerlRegEx; type TForm2 = class(TForm) Memo1: TMemo; Memo2: TMemo; Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form2: TForm2; implementation {$R *.dfm} procedure TForm2.Button1Click(Sender: TObject); var Regex: TPerlRegEx; GroupIndex: Integer; begin Regex := TPerlRegEx.Create(nil); Regex.RegEx := 'criteria\.push\(new kpCriterion\(&#39;(?P<keyword>(.*?))&#39;, (?P<number1>(.*?)),'#13#10'''(?P<localsearch>(.*?))'', ''(?P<globalsearch>(.*?))'', (?P<localsearchnum>(.*?)), (?P<globalsearchnum>(.*?)), (.*+)'#13#10','#13#10'&#39;\$(?P<price>(.*?))&#39;, (?P<number2>(.*?)),'#13#10'&#39;(?P<range>(.*?))&#39;, (?P<number3>(.*+))'; Regex.Options := [preMultiLine]; Regex.Subject := memo1.text; if Regex.Match then begin memo2.Lines.Add('Matches Found'); repeat for GroupIndex := 0 to Regex.SubExpressionCount do begin memo2.lines.add( Regex.SubExpressions[GroupIndex]); //Add Results to memo // backreference text: Regex.SubExpressions[GroupIndex]; // backreference start: Regex.SubExpressionOffsets[GroupIndex]; // backreference length: Regex.SubExpressionLengths[GroupIndex]; end; until not Regex.MatchAgain; end else memo2.Lines.Add('No-Matches Found'); end; end. DFM object Form2: TForm2 Left = 0 Top = 0 Caption = 'Form2' ClientHeight = 247 ClientWidth = 480 Color = clBtnFace Font.Charset = DEFAULT_CHARSET Font.Color = clWindowText Font.Height = -11 Font.Name = 'Tahoma' Font.Style = [] OldCreateOrder = False PixelsPerInch = 96 TextHeight = 13 object Memo1: TMemo Left = 8 Top = 8 Width = 185 Height = 89 Lines.Strings = ( 'var showImpressions = false; var ' 'criteriaSuggestor = ' '&#39;sensei_keyword&#39;; var ' 'historicalTimePeriod = &#39;Mar ' '2009 - Feb 2010&#39;; var ' 'historicalStartMonth = 2; var ' 'impressionTimePeriod = ' '&#39;February&#39;; var ' 'criteriaGroupsArray = new Array(); ' 'var captchaError = false; var ' 'quotaExceeded = false;' 'var criteria = new Array();' 'var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.52' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.67' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.5' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.43' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.4' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' '));' 'criteria.push(new ' 'kpCriterion(&#39;thunderstorm&#3' '9;, 1.9117305278778076,' #39'201,000'#39', '#39'550,000'#39', 201000, ' '550000, 0.8666667' ',' '&#39;$0.49&#39;, 493102,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '5' ',' '&#39;&#39;' ',' 'kpView.MATCH_BROAD' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.57' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.57' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.42' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.46' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.43' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.36' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.43' '));' 'criteria.push(new ' 'kpCriterion(&#39;[thunderstorm]&' '#39;, 1.9117305278778076,' #39'33,100'#39', '#39'90,500'#39', 33100, 90500, ' '0.8666667' ',' '&#39;$0.49&#39;, 493102,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '3' ',' '&#39;&#39;' ',' 'kpView.MATCH_EXACT' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.52' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.67' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.5' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.43' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.4' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.45' '));' 'criteria.push(new ' 'kpCriterion(&#39;\42thunderstorm\' '042&#39;, 1.9117305278778076,' #39'201,000'#39', '#39'450,000'#39', 201000, ' '450000, 0.8666667' ',' '&#39;$0.49&#39;, 493102,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '5' ',' '&#39;&#39;' ',' 'kpView.MATCH_PHRASE' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.75' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.64' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.56' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.52' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.6' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.53' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.58' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.61' '));' 'criteria.push(new ' 'kpCriterion(&#39;thunderstorms&#' '39;, 1.8268921375274658,' #39'110,000'#39', '#39'201,000'#39', 110000, ' '201000, 0.8' ',' '&#39;$0.56&#39;, 559074,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_BROAD' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.83' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.67' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.42' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.41' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.56' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.39' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.5' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.51' '));' 'criteria.push(new ' 'kpCriterion(&#39;[thunderstorms]&' '#39;, 1.8268921375274658,' #39'22,200'#39', '#39'40,500'#39', 22200, 40500, ' '0.8' ',' '&#39;$0.56&#39;, 559074,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_EXACT' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.75' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.64' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.56' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.52' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.6' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.53' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.47' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.58' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.61' '));' 'criteria.push(new ' 'kpCriterion(&#39;\42thunderstorms' '\042&#39;, 1.8268921375274658,' #39'110,000'#39', '#39'165,000'#39', 110000, ' '165000, 0.8' ',' '&#39;$0.56&#39;, 559074,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_PHRASE' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.71' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.92' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.75' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.77' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.79' '));' 'criteria.push(new ' 'kpCriterion(&#39;lightning ' 'storm&#39;, 1.774579644203186,' #39'49,500'#39', '#39'90,500'#39', 49500, 90500, ' '0.73333335' ',' '&#39;$0.54&#39;, 535666,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '5' ',' '&#39;&#39;' ',' 'kpView.MATCH_BROAD' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.76' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.97' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.98' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.84' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.86' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' '));' 'criteria.push(new ' 'kpCriterion(&#39;[lightning ' 'storm]&#39;, 1.774579644203186,' #39'12,100'#39', '#39'22,200'#39', 12100, 22200, ' '0.73333335' ',' '&#39;$0.54&#39;, 535666,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '5' ',' '&#39;&#39;' ',' 'kpView.MATCH_EXACT' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.72' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.85' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.92' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.67' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.71' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.65' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.76' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' '));' 'criteria.push(new ' 'kpCriterion(&#39;\42lightning ' 'storm\042&#39;, ' '1.774579644203186,' #39'33,100'#39', '#39'60,500'#39', 33100, 60500, ' '0.73333335' ',' '&#39;$0.54&#39;, 535666,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '5' ',' '&#39;&#39;' ',' 'kpView.MATCH_PHRASE' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.69' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.69' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.71' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.66' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.75' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.79' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.74' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.72' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' '));' 'criteria.push(new ' 'kpCriterion(&#39;rain storm&#39;, ' '1.7464053630828857,' #39'27,100'#39', '#39'49,500'#39', 27100, 49500, ' '0.6666667' ',' '&#39;$0.53&#39;, 526334,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '0' ',' '&#39;&#39;' ',' 'kpView.MATCH_BROAD' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.79' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.57' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.55' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.57' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.74' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.76' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.69' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.61' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.89' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' '));' 'criteria.push(new ' 'kpCriterion(&#39;[rain ' 'storm]&#39;, ' '1.7464053630828857,' #39'5,400'#39', '#39'8,100'#39', 5400, 8100, ' '0.6666667' ',' '&#39;$0.53&#39;, 526334,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '2' ',' '&#39;&#39;' ',' 'kpView.MATCH_EXACT' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.61' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.68' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.69' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.73' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.72' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.62' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.59' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.66' '));' 'criteria.push(new ' 'kpCriterion(&#39;\42rain ' 'storm\042&#39;, ' '1.7464053630828857,' #39'14,800'#39', '#39'27,100'#39', 14800, 27100, ' '0.6666667' ',' '&#39;$0.53&#39;, 526334,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '0' ',' '&#39;&#39;' ',' 'kpView.MATCH_PHRASE' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.87' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.78' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.84' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.79' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.77' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.61' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.92' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.82' '));' 'criteria.push(new ' 'kpCriterion(&#39;lightning ' 'storms&#39;, ' '1.6842896938323975,' #39'14,800'#39', '#39'27,100'#39', 14800, 27100, ' '0.73333335' ',' '&#39;$0.42&#39;, 417108,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_BROAD' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.9' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.9' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.84' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.7' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.88' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.77' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.76' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.57' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.75' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.63' '));' 'criteria.push(new ' 'kpCriterion(&#39;[lightning ' 'storms]&#39;, ' '1.6842896938323975,' #39'3,600'#39', '#39'8,100'#39', 3600, 8100, ' '0.73333335' ',' '&#39;$0.42&#39;, 417108,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_EXACT' ',' '0' ')); var monthlyVariation = new ' 'Array();' 'monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.8' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.86' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '1.0' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.99' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.77' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.83' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.85' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.78' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.77' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.6' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.91' ')); monthlyVariation.push(new ' 'kpMonthlyPopularity(' '0.81' '));' 'criteria.push(new ' 'kpCriterion(&#39;\42lightning ' 'storms\042&#39;, ' '1.6842896938323975,' #39'12,100'#39', '#39'22,200'#39', 12100, 22200, ' '0.73333335' ',' '&#39;$0.42&#39;, 417108,' '&#39;1 - 3&#39;, 2' ',' '0' ',' '0' ',' 'monthlyVariation,' '4' ',' '&#39;&#39;' ',' 'kpView.MATCH_PHRASE' ',' '0' ')); var monthlyVariation =

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• XML Schema to Java Classes with XJC

  - by nevets1219

  I am using xjc to generate Java classes from the XML schema and the following is an excerpt of the XSD. <xs:element name="NameInfo"> <xs:complexType> <xs:sequence> <xs:choice> <xs:element ref="UnstructuredName"/> <!-- This line --> <xs:sequence> <xs:element ref="StructuredName"/> <xs:element ref="UnstructuredName" minOccurs="0"/> <!-- and this line! --> </xs:sequence> </xs:choice> <xs:element ref="SomethingElse" minOccurs="0"/> </xs:sequence> </xs:complexType> </xs:element> For the most part the generated classes are fine but for the above block I would get something like: public List<Object> getContent() { if (content == null) { content = new ArrayList<Object>(); } return this.content; } with the following comment above it: * You are getting this "catch-all" property because of the following reason: * The field name "UnstructuredName" is used by two different parts of a schema. See: * line XXXX of file:FILE.xsd * line XXXX of file:FILE.xsd * To get rid of this property, apply a property customization to one * of both of the following declarations to change their names: * Gets the value of the content property. I have placed a comment at the end of the two line in question. At the moment, I don't think it will be easy to change the schema since this was decided between vendors and I would not want to go this route (if possible) as it will slow down progress quite a bit. I searched and have found this page, is the external customization what I want to do? I have been mostly working with the generated classes so I'm not entirely familiar with the process that generates these classes. A simple example of the "property customization" would be great! Alternative method of generating the Java classes would be fine as long as the schema can still be used.

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• How can this C and PHP programmer learn Ruby and Rails?

  - by Winston

  I came from a C, php and bash background, it was easy to learn because they all have the same C structure, which I can associate with what I already know. Then 2 years ago I learned Python and I learned it quite well, Python is easier for me to learn than Ruby. Then since last year, I was trying to learn Ruby, then Rails, and I admit, until now I still couldn't get it, the irony is that those are branded as easy to learn, but for a seasoned programmer like me, I just couldn't associate it with what I learned before, I have 2 books on both Ruby and Rails, and when I'm reading it nothing is absorbed into my mind, and I'm close to giving up... In ruby, I'm having a hard time grasping the concepts of blocks, and why there's @variables that can be accessed by other functions, and what does $variable and :variable do? And in Rails, why there's function like this_is_another_function_that_do_this, so thus ruby, is it just a naming convention or it's auto-generated with thisvariable _can_do_this_function. I'm still puzzled that where all those magic concepts and things came from? And now, 1 year of trying and absorbing, but still no progress... Edit: To summarize: How can I learn about blocks, and how can it be related to concepts from PHP/C? Variables, what does does it mean when a variable is prefixed with: @ $ : "Magic concepts", suchs as rails declarations of Records, what happens behind the scenes when I write has_one X OK so, bear with me with my confusion, at least I'm honest with myself, and it's over a year now since I first trying to learn ruby, and I'm not getting younger.. so I learned this in Bash/C/PHP solve_problem($problem) { if [ -e $problem == "trivial" ]; then write_solution(); else breakdown_problem_into_N_subproblems(\; define_relationship_between_subproblems; for i in $( command $each_subproblem ); do solve_problem $i done fi } write_solution(problem) { some_solution=$(command <parameters> "input" | command); command | command $some_solution > output_solved_problem_to_file } breakdown_problem_into_N_subproblems($problems) { for i in $problems; do command $i | command > i_can_output_a_file_right_away done } define_relationship_between_subproblems($problems) { if [ -e $problem == "relationship" ]; then relationship=$(command; command | command; command;) elsif [ -e $problem == "another_relationship" ]; relationship=$(command; command | command; command;) fi } In C/PHP is something like this solve_problem(problem) { if (problem == trivial) write_solution; else { breakdown_problem_into_N_subproblems; define_relationship_between_subproblems; for (each_subproblem) solve_problems(subproblem); } } And now, I just couldn't connect the dots with Ruby, |b|{ blocks }, using @variables, :variables, and variables_with_this_things..

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• VB6 app not executing as scheduled task unless user is logged on

  - by Tedd Hansen

  Hi Would greatly apprechiate some help on this one! It may be a tricky one. :) Problem I have an VB6 application which is set up as scheduled task. It starts every time, but when executing CreateObject it fails if user is not logged on to computer. I am looking for information on what could cause this. Primary suspicion is that some Windows API fails. Key points Behaviour confirmed on Windows 2000, 2003, 2008 and Vista. The application executes as user X at scheduled time, executed by Windows Task Scheduler. It executes every time. Application does start! -- If user X is logged on via RDP it runs perfectly. (Note that user doesn't need to be connected, only logged on) -- If user X is not logged on to computer the application fails. Failure point Application fails when using CreateObject() to instansiate a DCOM object which is also part of the application. The DCOM objects declare .dll-references at startup (globally/on top of .bas-file) and run a small startup function. Failure must be during startup, possibly in one of the .dll-declarations. Thoughts After some Googling my initial suspicion was directed at MAPI. From what I could see MAPI required user to be logged on. The application has MAPI references. But even with all MAPI references removed it still does not work. What is the difference if an user is logged on? Registry mapping? Environment? explorer.exe is running. Isn't the user logged on when application executes as the user? What info would help? A definitive answer would be truly great. Any information regarding any VB6 feature/Windows API that could act differently depending on wether user is logged on or not would definitively help. Similar experiences may lead me in the right direction. Tips on debuggin this. Thanks! :)

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• iPhone SDK - Comparing characters in string

  - by Karl Daniel

  Basically what I'm trying to do is compare 2 strings one from a plist and one from the user's input. I use a while loop to step through each character and compare it and if true then I increase an integer then once the loop has finished I work out the percentage correct / similarity of the plist answer and the user's answer. I seem to be having a problem however as the only return I'm getting is 0. Below is the code I'm using... The code below is all functioning and the question no longer requires answering... Working code... answerLength = boxAnswer.length; //Gets number of characters of first string. plistLength = plistAnswer.length; //Gets number of characters of second string. characterRange = 0; //Sets the variable for which character to look at. charactersCorrect = 0; //Sets the variable of number of matching characters. unichar answerCharacter; //Declares a unichar for the first string. unichar plistCharacter; //Declares a unichar for the second string. while (answerLength > 0 && plistLength > 0) { answerCharacter = [boxAnswer characterAtIndex:characterRange]; //Gets character of first string at the index of the range integer. plistCharacter = [plistAnswer characterAtIndex:characterRange]; //Gets character of second string at the index of the range integer. answerLength--; //Reduces number of characters left to compare. plistLength--; characterRange++; //Increases integer to tell it to look at next character in string. if (answerCharacter == plistCharacter) { //Checks to see if character of first string and character of second string match. charactersCorrect++; //If true increases the number correct. } } //Works out percentage of matching characters out of the total string. totalChar = plistAnswer.length; totalPercentage = (charactersCorrect/totalChar)*100; percentageCorrect.text = [NSString stringWithFormat:@"%i%%",totalPercentage]; Variable Declarations... int answerLength; int plistLength; int characterRange; double totalChar; double charactersCorrect; int totalPercentage;

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• Can't Prevent Nested Div's from Overflowing when using Percent Sizes and Padding in CSS?

  - by viatropos

  I want to be able to layout nested divs with these properties: width: 100% height: 100% padding: 10px I want it to be such that, the children are 100% width and height of the remaining space after padding is calculated, not before. Otherwise, when I have a document like the below example, the child makes the scrollbars appear. But the scrollbars are not the main issue, the fact that the child stretches beyond the width of the parent container is. I can use all position: absolute declarations, but that doesn't seem right. Here is the code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="X-UA-Compatible" content="IE=7"> <title>Liquid Layout</title> <style> body, html { width:100%; height:100%; margin:0; padding:0; background-color:black; } #container { position:relative; width:100%; height:100%; background-color:red; opacity:0.7; } #child1 { position:relative; width:100%; height:100%; padding:10px; background-color:blue; } #nested1 { position:relative; background-color: white; width:100%; height:100%; } </style> </head> <body> <div id="container"> <div id="child1"> <div id="nested1"></div> </div> </div> </body> </html> How do I make it so, using position:relative or position:static, and percent sizes, the percents size the children according to the parent's width/height minus padding and margins? Do I have to resort to position:absolute and left/right/top/bottom? Thanks for the help, Lance

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• Why am I getting the extra xmlns="" using LinqToXML?

  - by Hcabnettek

  Hello all, I'm using LinqToXML to generate a piece of XML. Everything works great except I'm throwing in some empty namespace declarations somehow. Does anyone out there know what I'm doing incorrectly? Here is my code private string SerializeInventory(IEnumerable<InventoryInformation> inventory) { var zones = inventory.Select(c => new { c.ZoneId , c.ZoneName , c.Direction }).Distinct(); XNamespace ns = "http://www.dummy-tmdd-address"; XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance"; var xml = new XElement(ns + "InventoryList" , new XAttribute(XNamespace.Xmlns + "xsi", xsi) , zones.Select(station => new XElement("StationInventory" , new XElement("station-id", station.ZoneId) , new XElement("station-name", station.ZoneName) , new XElement("station-travel-direction", station.Direction) , new XElement("detector-list" , inventory.Where(p => p.ZoneId == station.ZoneId).Select(plaza => new XElement("detector" , new XElement("detector-id", plaza.PlazaId))))))); xml.Save(@"c:\tmpXml\myXmlDoc.xml"); return xml.ToString(); } And here is the resulting xml. I hope it renders correctly? The browser may hide the tags. - <InventoryList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.dummy-tmdd-address"> <StationInventory xmlns=""> <station-id>999</station-id> <station-name>Zone 999-SEB</station-name> <station-travel-direction>SEB</station-travel-direction> <detector-list> <detector> <detector-id>7503</detector-id> </detector> <detector> <detector-id>2705</detector-id> </detector> </detector-list> </StationInventory> </InventoryList> Notice the empty namespace declaration in the first child element. Any ideas how I can remedy this? Any tips are of course appreciated. Thanks All, ~ck

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• Parsing Web Service Response in Oracle 9i

  - by zechariahs

  I'm having trouble parsing an XML response from a web service. I have a feeling this is due to a namespace issue. But, after 4 hours of research, trial-and-error, and head-banging I haven't been able to resolve it. Please help. My goal is to get a dbms_xmldom.DOMNodeList that contains "ERRORS" nodes. XML Response: <?xml version="1.0" encoding="ISO-8859-1"?> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <soap:Body> <GetMailDataResponse xmlns="https://www.customnamespacehost.com/webservicename"> <GetMailDataResult> <Errors xmlns=""> <ErrorDetail>Access Credentials Invalid</ErrorDetail> </Errors> </GetMailDataResult> </GetMailDataResponse> </soap:Body> Code: Unfortunately this code compiles but doesn't work. Error: "ORA-31013: Invalid XPATH expression." I believe this is due to the multiple namespaces defined in L_NS variable. I tried setting L_XPATH: "/soap:Envelope/soap:Body" and L_NS: "xmlns:soap="http://schemas.xmlsoap.org/soap/envelope"" but L_NL_RESULTS ends up being null. -- Variable Declarations -- P_XML XMLTYPE; L_CODE_NAME VARCHAR2(1000) := 'PKG_CIS_WS.FNC_STAGE_DATA'; L_XML_DOC dbms_xmldom.DOMDocument; L_NL_RESULTS dbms_xmldom.DOMNodeList; L_NL_DONOR_SCREENING_RESULTS dbms_xmldom.DOMNodeList; L_N_RESULT dbms_xmldom.DOMNode; L_XPATH VARCHAR2(4000); L_NS VARCHAR2(4000); L_TEMP VARCHAR2(4000); -- Code Snippet -- L_XML_DOC := dbms_xmldom.newDOMDocument(P_XML); L_XPATH := '/soap:Envelope/soap:Body/a:GetMailDataResponse/GetMailDataResult'; L_NS := 'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope"' || 'xmlns:a="https://www.customnamespacehost.com/webservicename"'; L_NL_RESULTS := dbms_xslprocessor.selectNodes( dbms_xmldom.makeNode(L_XML_DOC) , L_XPATH , L_NS); if not DBMS_XMLDOM.ISNULL(L_NL_RESULTS) then FOR RESULTS_REC IN 0 .. dbms_xmldom.getLength(L_NL_RESULTS) - 1 LOOP L_N_RESULT := dbms_xmldom.item(L_NL_RESULTS, RESULTS_REC); L_TEMP := dbms_xmldom.GETNODENAME(L_N_RESULT); prc_bjm(L_CODE_NAME, 'L_TEMP = ' || L_TEMP, SQLCODE); dbms_xslprocessor.valueOf(L_N_RESULT, 'Errors/ErrorDetail/text()', L_TEMP); prc_bjm(L_CODE_NAME, 'L_TEMP = ' || L_TEMP, SQLCODE); END LOOP; else prc_bjm(L_CODE_NAME, 'No nodes for: ' || L_XPATH || '(' || L_NS || ')', SQLCODE); end if; -- if not DBMS_XMLDOM.ISNULL(L_NL_RESULTS)

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• .NET: Interface Problem VB.net Getter Only Interface

  - by snmcdonald

  Why does an interface override a class definition and violate class encapsulation? I have included two samples below, one in C# and one in VB.net? VB.net Module Module1 Sub Main() Dim testInterface As ITest = New TestMe Console.WriteLine(testInterface.Testable) ''// Prints False testInterface.Testable = True ''// Access to Private!!! Console.WriteLine(testInterface.Testable) ''// Prints True Dim testClass As TestMe = New TestMe Console.WriteLine(testClass.Testable) ''// Prints False ''//testClass.Testable = True ''// Compile Error Console.WriteLine(testClass.Testable) ''// Prints False End Sub End Module Public Class TestMe : Implements ITest Private m_testable As Boolean = False Public Property Testable As Boolean Implements ITest.Testable Get Return m_testable End Get Private Set(ByVal value As Boolean) m_testable = value End Set End Property End Class Interface ITest Property Testable As Boolean End Interface C# using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace InterfaceCSTest { class Program { static void Main(string[] args) { ITest testInterface = new TestMe(); Console.WriteLine(testInterface.Testable); testInterface.Testable = true; Console.WriteLine(testInterface.Testable); TestMe testClass = new TestMe(); Console.WriteLine(testClass.Testable); //testClass.Testable = true; Console.WriteLine(testClass.Testable); } } class TestMe : ITest { private bool m_testable = false; public bool Testable { get { return m_testable; } private set { m_testable = value; } } } interface ITest { bool Testable { get; set; } } } More Specifically How do I implement a interface in VB.net that will allow for a private setter. For example in C# I can declare: class TestMe : ITest { private bool m_testable = false; public bool Testable { get { return m_testable; } private set //No Compile Error here! { m_testable = value; } } } interface ITest { bool Testable { get; } } However, if I declare an interface property as readonly in VB.net I cannot create a setter. If I create a VB.net interface as just a plain old property then interface declarations will violate my encapsulation. Public Class TestMe : Implements ITest Private m_testable As Boolean = False Public ReadOnly Property Testable As Boolean Implements ITest.Testable Get Return m_testable End Get Private Set(ByVal value As Boolean) ''//Compile Error m_testable = value End Set End Property End Class Interface ITest ReadOnly Property Testable As Boolean End Interface So my question is, how do I define a getter only Interface in VB.net with proper encapsulation? I figured the first example would have been the best method. However, it appears as if interface definitions overrule class definitions. So I tried to create a getter only (Readonly) property like in C# but it does not work for VB.net. Maybe this is just a limitation of the language?

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• Function lfit in numerical recipes, providing a test function

  - by Simon Walker

  Hi I am trying to fit collected data to a polynomial equation and I found the lfit function from Numerical Recipes. I only have access to the second edition, so am using that. I have read about the lfit function and its parameters, one of which is a function pointer, given in the documentation as void (*funcs)(float, float [], int)) with the help The user supplies a routine funcs(x,afunc,ma) that returns the ma basis functions evaluated at x = x in the array afunc[1..ma]. I am struggling to understand how this lfit function works. An example function I found is given below: void fpoly(float x, float p[], int np) /*Fitting routine for a polynomial of degree np-1, with coe?cients in the array p[1..np].*/ { int j; p[1]=1.0; for (j=2;j<=np;j++) p[j]=p[j-1]*x; } When I run through the source code for the lfit function in gdb I can see no reference to the funcs pointer. When I try and fit a simple data set with the function, I get the following error message. Numerical Recipes run-time error... gaussj: Singular Matrix ...now exiting to system... Clearly somehow a matrix is getting defined with all zeroes. I am going to involve this function fitting in a large loop so using another language is not really an option. Hence why I am planning on using C/C++. For reference, the test program is given here: int main() { float x[5] = {0., 0., 1., 2., 3.}; float y[5] = {0., 0., 1.2, 3.9, 7.5}; float sig[5] = {1., 1., 1., 1., 1.}; int ndat = 4; int ma = 4; /* parameters in equation */ float a[5] = {1, 1, 1, 0.1, 1.5}; int ia[5] = {1, 1, 1, 1, 1}; float **covar = matrix(1, ma, 1, ma); float chisq = 0; lfit(x,y,sig,ndat,a,ia,ma,covar,&chisq,fpoly); printf("%f\n", chisq); free_matrix(covar, 1, ma, 1, ma); return 0; } Also confusing the issue, all the Numerical Recipes functions are 1 array-indexed so if anyone has corrections to my array declarations let me know also! Cheers

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• compiler warning at C++ template base class

  - by eike

  I get a compiler warning, that I don't understand in that context, when I compile the "Child.cpp" from the following code. (Don't wonder: I stripped off my class declarations to the bare minuum, so the content will not make much sense, but you will see the problem quicker). I get the warning with VS2003 and VS2008 on the highest warning level. The code AbstractClass.h : #include <iostream> template<typename T> class AbstractClass { public: virtual void Cancel(); // { std::cout << "Abstract Cancel" << std::endl; }; virtual void Process() = 0; }; //outside definition. if I comment out this and take the inline //definition like above (currently commented out), I don't get //a compiler warning template<typename T> void AbstractClass<T>::Cancel() { std::cout << "Abstract Cancel" << std::endl; } Child.h : #include "AbstractClass.h" class Child : public AbstractClass<int> { public: virtual void Process(); }; Child.cpp : #include "Child.h" #include <iostream> void Child::Process() { std::cout << "Process" << std::endl; } The warning The class "Child" is derived from "AbstractClass". In "AbstractClass" there's the public method "AbstractClass::Cancel()". If I define the method outside of the class body (like in the code you see), I get the compiler warning... AbstractClass.h(7) : warning C4505: 'AbstractClass::Cancel' : unreferenced local function has been removed with [T=int] ...when I compile "Child.cpp". I do not understand this, because this is a public function and the compiler can't know if I later reference this method or not. And, in the end, I reference this method, because I call it in main.cpp and despite this compiler warning, this method works if I compile and link all files and execute the program: //main.cpp #include <iostream> #include "Child.h" int main() { Child child; child.Cancel(); //works, despite the warning } If I do define the Cancel() function as inline (you see it as out commented code in AbstractClass.h), then I don't get the compiler warning. Of course my program works, but I want to understand this warning or is this just a compiler mistake? Furthermore, if do not implement AbsctractClass as a template class (just for a test purpose in this case) I also don't get the compiler warning...?

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• Vim + OmniCppComplete: Completing on Class Members which are STL containers

  - by Robert S. Barnes

  Completion on class members which are STL containers is failing. Completion on local objects which are STL containers works fine. For example, given the following files: // foo.h #include <string> class foo { public: void set_str(const std::string &); std::string get_str_reverse( void ); private: std::string str; }; // foo.cpp #include "foo.h" using std::string; string foo::get_str_reverse ( void ) { string temp; temp.assign(str); reverse(temp.begin(), temp.end()); return temp; } /* ----- end of method foo::get_str ----- */ void foo::set_str ( const string &s ) { str.assign(s); } /* ----- end of method foo::set_str ----- */ I've generated the tags for these two files using: ctags -R --c++-kinds=+pl --fields=+iaS --extra=+q . When I type temp. in the cpp I get a list of string member functions as expected. But if I type str. omnicppcomplete spits out "Pattern Not Found". I've noticed that the temp. completion only works if I have the using std::string; declaration. How do I get completion to work on my class members which are STL containers? Edit I found that completion on members which are STL containers works if I make the follow modifications to the header: // foo.h #include <string> using std::string; class foo { public: void set_str(const string &); string get_str_reverse( void ); private: string str; }; Basically, if I add using std::string; and then remove the std:: name space qualifier from the string str; member and regenerate the tags file then OmniCppComplete is able to do completion on str.. It doesn't seem to matter whether or not I have let OmniCpp_DefaultNamespaces = ["std", "_GLIBCXX_STD"] set in the .vimrc. The problem is that putting using declarations in header files seems like a big no-no, so I'm back to square one.

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• How to pass parameters to Apache Pivot's wtkx:include tag?

  - by Andrew Swan

  I need to create a reusable UI component that accepts a number of parameters (e.g. an image URL and some label text), similar to how JSP tags can accept parameters. The Pivot docs for the "wtkx:include" tag say: The tag allows a WTKX file to embed content defined in an external WTKX file as if it was defined in the source file itself. This is useful for ... defining reusable content templates I was hoping that I could define my component in a WTKX file using standard Pivot components (e.g. a TextInput) and pass it one or more parameters; for example my reusable template called "row.wtkx" might contain a row with an image and a text field, like this (where the ${xxx} bits are the parameters): <TablePane.Row xmlns="org.apache.pivot.wtk"> <ImageView image="@images/${image_url}" /> <TextInput text="${title}" /> </TablePane.Row> I could then reuse this component within a TablePane as follows: <rows> <TablePane.Row> <Label text="Painting"/> <Label text="Title"/> </TablePane.Row> <wtkx:include src="row.wtkx" image_url="mona_lisa.jpg" title="Mona Lisa"/> <wtkx:include src="row.wtkx" image_url="pearl_earring.jpg" title="Girl with a Pearl Earring"/> <wtkx:include src="row.wtkx" image_url="melting_clocks.jpg" title="Melting Clocks"/> </rows> I've made up the ${...} syntax myself just to show what I'm trying to do. Also, there could be other ways to pass the parameter values other than using attributes of the "wtkx:include" tag itself, e.g. pass a JSON-style map called say "args". The ability to pass parameters like this would make the include tag much more powerful, e.g. in my case allow me to eliminate a lot of duplication between the table row declarations. Or is "wtkx:include" not the right way to be doing this?

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• How to define an extern, C struct returning function in C++ using MSVC?

  - by DK

  The following source file will not compile with the MSVC compiler (v15.00.30729.01): /* stest.c */ #ifdef __cplusplus extern "C" { #endif struct Test; extern struct Test make_Test(int x); struct Test { int x; }; extern struct Test make_Test(int x) { struct Test r; r.x = x; return r; } #ifdef __cplusplus } #endif Compiling with cl /c /Tpstest.c produces the following error: stest.c(8) : error C2526: 'make_Test' : C linkage function cannot return C++ class 'Test' stest.c(6) : see declaration of 'Test' Compiling without /Tp (which tells cl to treat the file as C++) works fine. The file also compiles fine in DigitalMars C and GCC (from mingw) in both C and C++ modes. I also used -ansi -pedantic -Wall with GCC and it had no complaints. For reasons I will go into below, we need to compile this file as C++ for MSVC (not for the others), but with functions being compiled as C. In essence, we want a normal C compiler... except for about six lines. Is there a switch or attribute or something I can add that will allow this to work? The code in question (though not the above; that's just a reduced example) is being produced by a code generator. As part of this, we need to be able to generate floating point nans and infinities as constants (long story), meaning we have to compile with MSVC in C++ mode in order to actually do this. We only found one solution that works, and it only works in C++ mode. We're wrapping the code in extern "C" {...} because we want to control the mangling and calling convention so that we can interface with existing C code. ... also because I trust C++ compilers about as far as I could throw a smallish department store. I also tried wrapping just the reinterpret_cast line in extern "C++" {...}, but of course that doesn't work. Pity. There is a potential solution I found which requires reordering the declarations such that the full struct definition comes before the function foward decl., but this is very inconvenient due to the way the codegen is performed, so I'd really like to avoid having to go down that road if I can.

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• Renaming nodes and values with xslt

  - by T.K.

  Hello world, I'm new to xslt, and have a task that I'm not really sure where to go with. I want to rename nodes, but maintain the format all node declarations. In the actual context I'll be applying this to, I'll be doing a series of renames like this, but for the sake of brevity, the sample I've written up only involves renaming one node. I am using XSL 1.0. Input: <variables> <var> <RENAME> a </RENAME> </var> <var RENAME='b'/> <var> <DO_NOT_TOUCH> c </DO_NOT_TOUCH> </var> <var DO_NOT_TOUCH='d'/> </variables> Desired Output: <variables> <var> <DONE> a </DONE> </var> <var DONE='b'/> <var> <DO_NOT_TOUCH> c </DO_NOT_TOUCH> </var> <var DO_NOT_TOUCH='d'/> </variables> My xslt: <xsl:template match="RENAME"> <RENAMED> <xsl:apply-templates select="@*|node()"/> </RENAMED> </xsl:template> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> Current Output <variables> <var> <RENAMED> a </RENAMED> </var> <var RENAME="b"> </var> <var> <DO_NOT_TOUCH> c </DO_NOT_TOUCH> </var> <var DO_NOT_TOUCH="d"> </var> </variables>

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• Delphi Unit local variables - how to make each instance unique?

  - by Justin

  Ok, this, I'm sure is something simple that is easy to do. The problem : I've inherited scary spaghetti code and am slowly trying to better it when new features need adding - generally when a refactor makes adding the new feature neater. I've got a bunch of code I'm packing into a single unit which, in different places in the application, controls the same physical thing in the outside world. The control appears in several places in the application and operates slightly differently in each instance. What I've done is to create a unit with all of the features I need which I can simply drop, as a frame, into each form that requires it. Each form then uses the unit's interface methods to customise the behaviour for each instance. The problem within the problem : In the unit in question (the frame) I have a variable declared in the IMPLEMENTATION section - local to the unit. I also have a procedure, declared in the TYPE section which takes an argument and assigns that argument to the local variable in question - each form passes a unique variable to each instance of the frame/unit. What I want it to do is for each instance of the frame to keep its own version of that variable, different from the others, and use that to define how it operates. What seems to be happening, however, is that all instances are using the same value, even if I explicitly pass each instance a different variable. ie: Unit FlexibleUnit; interface uses //the uses stuff type TFlexibleUnit=class(TFrame) //declarations including procedure makeThisInstanceX(passMeTheVar:integer); private // public // end; implementation uses //the uses var myLocalVar; procedure makeThisInstanceX(passMeTheVar:integer); begin myLocalVar:=passMeTheVar; end; //other procedures using myLocalVar //etc to the end; Now somewhere in another Form I've dropped this Frame onto the Design pane, sometimes two of these frames on one Form, and have it declared in the proper places, etc. Each is unique in that : ThisFlexibleUnit : TFlexibleUnit; ThatFlexibleUnit : TFlexibleUnit; and when I do a: ThisFlexibleUnit.makeThisInstanceX(var1); //want to behave in way "var1" ThatFlexibleUnit.makeThisInstanceX(var2); //want to behave in way "var2" it seems that they both share the same variable "myLocalVar". Am I doing this wrong, in principle? If this is the correct method then it's a matter of debugging what I have (which is too huge to post) but if this is not correct in principle then is there a way to do what I am suggesting? Thanks in advance, Stack Overflow - you guys (and gals!) are legendary.

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• What's the C strategy to "imitate" a C++ template ?

  - by Andrei Ciobanu

  After reading some examples on stackoverflow, and following some of the answers for my previous questions (1), I've eventually come with a "strategy" for this. I've come to this: 1) Have a declare section in the .h file. Here I will define the data-structure, and the accesing interface. Eg.: /** * LIST DECLARATION. (DOUBLE LINKED LIST) */ #define NM_TEMPLATE_DECLARE_LIST(type) \ typedef struct nm_list_elem_##type##_s { \ type data; \ struct nm_list_elem_##type##_s *next; \ struct nm_list_elem_##type##_s *prev; \ } nm_list_elem_##type ; \ typedef struct nm_list_##type##_s { \ unsigned int size; \ nm_list_elem_##type *head; \ nm_list_elem_##type *tail; \ int (*cmp)(const type e1, const type e2); \ } nm_list_##type ; \ \ nm_list_##type *nm_list_new_##type##_(int (*cmp)(const type e1, \ const type e2)); \ \ (...other functions ...) 2) Wrap the functions in the interface inside MACROS: /** * LIST INTERFACE */ #define nm_list(type) \ nm_list_##type #define nm_list_elem(type) \ nm_list_elem_##type #define nm_list_new(type,cmp) \ nm_list_new_##type##_(cmp) #define nm_list_delete(type, list, dst) \ nm_list_delete_##type##_(list, dst) #define nm_list_ins_next(type,list, elem, data) \ nm_list_ins_next_##type##_(list, elem, data) (...others...) 3) Implement the functions: /** * LIST FUNCTION DEFINITIONS */ #define NM_TEMPLATE_DEFINE_LIST(type) \ nm_list_##type *nm_list_new_##type##_(int (*cmp)(const type e1, \ const type e2)) \ {\ nm_list_##type *list = NULL; \ list = nm_alloc(sizeof(*list)); \ list->size = 0; \ list->head = NULL; \ list->tail = NULL; \ list->cmp = cmp; \ }\ void nm_list_delete_##type##_(nm_list_##type *list, \ void (*destructor)(nm_list_elem_##type elem)) \ { \ type data; \ while(nm_list_size(list)){ \ data = nm_list_rem_##type(list, tail); \ if(destructor){ \ destructor(data); \ } \ } \ nm_free(list); \ } \ (...others...) In order to use those constructs, I have to create two files (let's call them templates.c and templates.h) . In templates.h I will have to NM_TEMPLATE_DECLARE_LIST(int), NM_TEMPLATE_DECLARE_LIST(double) , while in templates.c I will need to NM_TEMPLATE_DEFINE_LIST(int) , NM_TEMPLATE_DEFINE_LIST(double) , in order to have the code behind a list of ints, doubles and so on, generated. By following this strategy I will have to keep all my "template" declarations in two files, and in the same time, I will need to include templates.h whenever I need the data structures. It's a very "centralized" solution. Do you know other strategy in order to "imitate" (at some point) templates in C++ ? Do you know a way to improve this strategy, in order to keep things in more decentralized manner, so that I won't need the two files: templates.c and templates.h ?

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• Problem separating C++ code in header, inline functions and code.

  - by YuppieNetworking

  Hello all, I have the simplest code that I want to separate in three files: Header file: class and struct declarations. No implementations at all. Inline functions file: implementation of inline methods in header. Code file: normal C++ code for more complicated implementations. When I was about to implement an operator[] method, I couldn't manage to compile it. Here is a minimal example that shows the same problem: Header (myclass.h): #ifndef _MYCLASS_H_ #define _MYCLASS_H_ class MyClass { public: MyClass(const int n); virtual ~MyClass(); double& operator[](const int i); double operator[](const int i) const; void someBigMethod(); private: double* arr; }; #endif /* _MYCLASS_H_ */ Inline functions (myclass-inl.h): #include "myclass.h" inline double& MyClass::operator[](const int i) { return arr[i]; } inline double MyClass::operator[](const int i) const { return arr[i]; } Code (myclass.cpp): #include "myclass.h" #include "myclass-inl.h" #include <iostream> inline MyClass::MyClass(const int n) { arr = new double[n]; } inline MyClass::~MyClass() { delete[] arr; } void MyClass::someBigMethod() { std::cout << "Hello big method that is not inlined" << std::endl; } And finally, a main to test it all: #include "myclass.h" #include <iostream> using namespace std; int main(int argc, char *argv[]) { MyClass m(123); double x = m[1]; m[1] = 1234; cout << "m[1]=" << m[1] << endl; x = x + 1; return 0; } void nothing() { cout << "hello world" << endl; } When I compile it, it says: main.cpp:(.text+0x1b): undefined reference to 'MyClass::MyClass(int)' main.cpp:(.text+0x2f): undefined reference to 'MyClass::operator[](int)' main.cpp:(.text+0x49): undefined reference to 'MyClass::operator[](int)' main.cpp:(.text+0x65): undefined reference to 'MyClass::operator[](int)' However, when I move the main method to the MyClass.cpp file, it works. Could you guys help me spot the problem? Thank you.

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• C++ Class Access Specifier Verbosity

  - by PolyTex

  A "traditional" C++ class (just some random declarations) might resemble the following: class Foo { public: Foo(); explicit Foo(const std::string&); ~Foo(); enum FooState { Idle, Busy, Unknown }; FooState GetState() const; bool GetBar() const; void SetBaz(int); private: struct FooPartialImpl; void HelperFunction1(); void HelperFunction2(); void HelperFunction3(); FooPartialImpl* m_impl; // smart ptr FooState m_state; bool m_bar; int m_baz; }; I always found this type of access level specification ugly and difficult to follow if the original programmer didn't organize his "access regions" neatly. Taking a look at the same snippet in a Java/C# style, we get: class Foo { public: Foo(); public: explicit Foo(const std::string&); public: ~Foo(); public: enum FooState { Idle, Busy, Unknown }; public: FooState GetState() const; public: bool GetBar() const; public: void SetBaz(int); private: struct FooPartialImpl; private: void HelperFunction1(); private: void HelperFunction2(); private: void HelperFunction3(); private: FooPartialImpl* m_impl; // smart ptr private: FooState m_state; private: bool m_bar; private: int m_baz; }; In my opinion, this is much easier to read in a header because the access specifier is right next to the target, and not a bunch of lines away. I found this especially true when working with header-only template code that wasn't separated into the usual "*.hpp/*.inl" pair. In that scenario, the size of the function implementations overpowered this small but important information. My question is simple and stems from the fact that I've never seen anyone else actively do this in their C++ code. Assuming that I don't have a "Class View" capable IDE, are there any obvious drawbacks to using this level of verbosity? Any other style recommendations are welcome!

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• log4bash: Cannot find a way to add MaxBackupIndex to this logger implementation

  - by Syffys

  I have been trying to modify this log4bash implementation but I cannot manage to make it work. Here's a sample: #!/bin/bash TRUE=1 FALSE=0 ############### Added for testing log4bash_LOG_ENABLED=$TRUE log4bash_rootLogger=$TRACE,f,s log4bash_appender_f=file log4bash_appender_f_dir=$(pwd) log4bash_appender_f_file=test.log log4bash_appender_f_roll_format=%Y%m log4bash_appender_f_roll=$TRUE log4bash_appender_f_maxBackupIndex=10 #################################### log4bash_abs(){ if [ "${1:0:1}" == "." ]; then builtin echo ${rootDir}/${1} else builtin echo ${1} fi } log4bash_check_app_dir(){ if [ "$log4bash_LOG_ENABLED" -eq $TRUE ]; then dir=$(log4bash_abs $1) if [ ! -d ${dir} ]; then #log a seperation line mkdir $dir fi fi } # Delete old log files # $1 Log directory # $2 Log filename # $3 Log filename suffix # $4 Max backup index log4bash_delete_old_files(){ ##### Added for testing builtin echo "Running log4bash_delete_old_files $@" &2 ##### if [ "$log4bash_LOG_ENABLED" -eq $TRUE ] && [ -n "$3" ] && [ "$4" -gt 0 ]; then local directory=$(log4bash_abs $1) local filename=$2 local maxBackupIndex=$4 local suffix=$(echo "${3}" | sed -re 's/[^.]/?/g') local logFileList=$(find "${directory}" -mindepth 1 -maxdepth 1 -name "${filename}${suffix}" -type f | xargs ls -1rt) local fileCnt=$(builtin echo -e "${logFileList}" | wc -l) local fileToDeleteCnt=$(($fileCnt-$maxBackupIndex)) local fileToDelete=($(builtin echo -e "${logFileList}" | head -n "${fileToDeleteCnt}" | sed ':a;N;$!ba;s/\n/ /g')) ##### Added for testing builtin echo "log4bash_delete_old_files About to start deletion ${fileToDelete[@]}" &2 ##### if [ ${fileToDeleteCnt} -gt 0 ]; then for f in "${fileToDelete[@]}"; do #### Added for testing builtin echo "Removing file ${f}" &2 #### builtin eval rm -f ${f} done fi fi } #Appender # $1 Log directory # $2 Log file # $3 Log file roll ? # $4 Appender Name log4bash_filename(){ builtin echo "Running log4bash_filename $@" &2 local format local filename log4bash_check_app_dir "${1}" if [ ${3} -eq 1 ];then local formatProp=${4}_roll_format format=${!formatProp} if [ -z ${format} ]; then format=$log4bash_appender_file_format fi local suffix=.`date "+${format}"` filename=${1}/${2}${suffix} # Old log files deletion local previousFilenameVar=int_${4}_file_previous local maxBackupIndexVar=${4}_maxBackupIndex if [ -n "${!maxBackupIndexVar}" ] && [ "${!previousFilenameVar}" != "${filename}" ]; then builtin eval export $previousFilenameVar=$filename log4bash_delete_old_files "${1}" "${2}" "${suffix}" "${!maxBackupIndexVar}" else builtin echo "log4bash_filename $previousFilenameVar = ${!previousFilenameVar}" fi else filename=${1}/${2} fi builtin echo $filename } ######################## Added for testing filename_caller(){ builtin echo "filename_caller Call $1" output=$(log4bash_abs $(log4bash_filename "${log4bash_appender_f_dir}" "${log4bash_appender_f_file}" "1" "log4bash_appender_f" )) builtin echo ${output} } #### Previous logs generation for i in {1101..1120}; do file="${log4bash_appender_f_file}.2012${i:2:3}" builtin echo "${file} $i" touch -m -t "2012${i}0000" ${log4bash_appender_f_dir}/$file done for i in {1..4}; do filename_caller $i done I expect log4bash_filename function to step into the following if only when the calculated log filename is different from the previous one: if [ -n "${!maxBackupIndexVar}" ] && [ "${!previousFilenameVar}" != "${filename}" ]; then For this scenario to apply, I'd need ${!previousFilenameVar} to be correctly set, but it's not the case, so log4bash_filename steps into this if all the time which is really not necessary... It looks like the issue is due to the following line not working properly: builtin eval export $previousFilenameVar=$filename I have a some theories to explain why: in the original code, functions are declared and exported as readonly which makes them unable to modify global variable. I removed readonly declarations in the above sample, but probleme persists. Function calls are performed in $() which should make them run into seperated shell instances so variable modified are not exported to the main shell But I cannot manage to find a workaround to this issue... Any help is appreciated, thanks in advance!

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• emacs: how do I use edebug on code that is defined in a macro?

  - by Cheeso

  I don't even know the proper terminology for this lisp syntax, so I don't know if the words I'm using to ask the question, make sense. But the question makes sense, I'm sure. So let me just show you. cc-mode (cc-fonts.el) has things called "matchers" which are bits of code that run to decide how to fontify a region of code. That sounds simple enough, but the matcher code is in a form I don't completely understand, with babckticks and comma-atsign and just comma and so on, and furthermore it is embedded in a c-lang-defcost, which itself is a macro. And I want to run edebug on that code. Look: (c-lang-defconst c-basic-matchers-after "Font lock matchers for various things that should be fontified after generic casts and declarations are fontified. Used on level 2 and higher." t `(;; Fontify the identifiers inside enum lists. (The enum type ;; name is handled by `c-simple-decl-matchers' or ;; `c-complex-decl-matchers' below. ,@(when (c-lang-const c-brace-id-list-kwds) `((,(c-make-font-lock-search-function (concat "\\<\\(" (c-make-keywords-re nil (c-lang-const c-brace-id-list-kwds)) "\\)\\>" ;; Disallow various common punctuation chars that can't come ;; before the '{' of the enum list, to avoid searching too far. "[^\]\[{}();,/#=]*" "{") '((c-font-lock-declarators limit t nil) (save-match-data (goto-char (match-end 0)) (c-put-char-property (1- (point)) 'c-type 'c-decl-id-start) (c-forward-syntactic-ws)) (goto-char (match-end 0))))))) I am reading up on lisp syntax to figure out what those things are and what to call them, but aside from that, how can I run edebug on the code that follows the comment that reads ;; Fontify the identifiers inside enum lists. ? I know how to run edebug on a defun - just invoke edebug-defun within the function's definition, and off I go. Is there a corresponding thing I need to do to edebug the cc-mode matcher code forms?

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• 'Scanner' does not name a type error in g++

  - by Max

  Hi. I'm trying to compile code in g++ and I get the following errors: In file included from scanner.hpp:8, from scanner.cpp:5: parser.hpp:14: error: ‘Scanner’ does not name a type parser.hpp:15: error: ‘Token’ does not name a type Here's my g++ command: g++ parser.cpp scanner.cpp -Wall Here's parser.hpp: #ifndef PARSER_HPP #define PARSER_HPP #include <string> #include <map> #include "scanner.hpp" using std::string; class Parser { // Member Variables private: Scanner lex; // Lexical analyzer Token look; // tracks the current lookahead token // Member Functions <some function declarations> }; #endif and here's scanner.hpp: #ifndef SCANNER_HPP #define SCANNER_HPP #include <iostream> #include <cctype> #include <string> #include <map> #include "parser.hpp" using std::string; using std::map; enum { // reserved words BOOL, ELSE, IF, TRUE, WHILE, DO, FALSE, INT, VOID, // punctuation and operators LPAREN, RPAREN, LBRACK, RBRACK, LBRACE, RBRACE, SEMI, COMMA, PLUS, MINUS, TIMES, DIV, MOD, AND, OR, NOT, IS, ADDR, EQ, NE, LT, GT, LE, GE, // symbolic constants NUM, ID, ENDFILE, ERROR }; class Token { public: int tag; int value; string lexeme; Token() {tag = 0;} Token(int t) {tag = t;} }; class Num : public Token { public: Num(int v) {tag = NUM; value = v;} }; class Word : public Token { public: Word() {tag = 0; lexeme = "default";} Word(int t, string l) {tag = t; lexeme = l;} }; class Scanner { private: int line; // which line the compiler is currently on int depth; // how deep in the parse tree the compiler is map<string,Word> words; // list of reserved words and used identifiers // Member Functions public: Scanner(); Token scan(); string printTag(int); friend class Parser; }; #endif anyone see the problem? I feel like I'm missing something incredibly obvious.

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• What is the most idiomatic way to emulating Perl's Test::More::done_testing?

  - by DVK

  I have to build unit tests for in environment with a very old version of Test::More (perl5.8 with $Test::More::VERSION being '0.80') which predates the addition of done_testing(). Upgrading to newer Test::More is out of the question for practical reasons. And I am trying to avoid using no_tests - it's generally a bad idea not catching when your unit test exits prematurely - say due to some logic not executing when you expected it to. What is the most idiomatic way of running a configurable amount of tests, assuming no no_tests or done_testing() is used? Details: My unit tests usually take the form of: use Test::More; my @test_set = ( [ "Test #1", $param1, $param2, ... ] ,[ "Test #1", $param1, $param2, ... ] # ,... ); foreach my $test (@test_set) { run_test($test); } sub run_test { # $expected_tests += count_tests($test); ok(test1($test)) || diag("Test1 failed"); # ... } The standard approach of use Test::More tests => 23; or BEGIN {plan tests => 23} does not work since both are obviously executed before @tests is known. My current approach involves making @tests global and defining it in the BEGIN {} block as follows: use Test::More; BEGIN { our @test_set = (); # Same set of tests as above my $expected_tests = 0; foreach my $test (@tests) { my $expected_tests += count_tests($test); } plan tests = $expected_tests; } our @test_set; # Must do!!! Since first "our" was in BEGIN's scope :( foreach my $test (@test_set) { run_test($test); } # Same sub run_test {} # Same I feel this can be done more idiomatically but not certain how to improve. Chief among the smells is the duplicate our @test_test declarations - in BEGIN{} and after it. Another approach is to emulate done_testing() by calling Test::More->builder->plan(tests=>$total_tests_calculated). I'm not sure if it's any better idiomatically-wise.

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• How should I smooth the transition between these two states in flex/flashbuilder

  - by Joshua

  I have an item in which has two states, best described as open and closed, and they look like this: and And what I'd like to do is is smooth the transition between one state and the other, effectively by interpolating between the two points in a smooth manner (sine) to move the footer/button-block and then fade in the pie chart. However this is apparently beyond me and after wrestling with my inability to do so for an hour+ I'm posting it here :D So my transition block looks as follows <s:transitions> <s:Transition id="TrayTrans" fromState="*" toState="*"> <s:Sequence> <s:Move duration="400" target="{footer}" interpolator="{Sine}"/> <s:Fade duration="300" targets="{body}"/> </s:Sequence> </s:Transition> <s:Transition> <s:Rotate duration="3000" /> </s:Transition> </s:transitions> where {body} refers to the pie chart and {footer} refers to the footer/button-block. However this doesn't work so I don't really know what to do... Additional information which may be beneficial: The body block is always of fixed height (perhaps of use for the Xby variables in some effects?). It needs to work in both directions. Oh and the Sine block is defined above in declarations just as <s:Sine id="Sine">. Additionally! How would I go about setting the pie chart to rotate continually using these transition blocks? (this would occur without the labels on) Or is that the wrong way to go about it as it's not a transition as such? The effect I'm after is one where the pie chart rotates slowly without labels prior to a selection of a button below, but on selection the rotation stops and labels appear... Thanks a lot in advance! And apologies on greyscale, but I can't really decide on a colour scheme. Any suggestions welcome.

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• C++ dynamic type construction and detection

  - by KneLL

  There was an interesting problem in C++, but it concerns more likely architecture. There are many (10, 20, 40, etc) classes that describe some characteristics (mix-in classes), for exmaple: struct Base { virtual ~Base() {} }; struct A : virtual public Base { int size; }; struct B : virtual public Base { float x, y; }; struct C : virtual public Base { bool some_bool_state; }; struct D : virtual public Base { string str; } // .... Primary module declares and exports a function (for simplicity just function declarations without classes): // .h file void operate(Base *pBase); // .cpp file void operate(Base *pBase) { // .... } Any other module can has a code like this: #include "mixins.h" #include "primary.h" class obj1_t : public A, public C, public D {}; class obj2_t : public B, public D {}; // ... void Pass() { obj1_t obj1; obj2_t obj2; operate(&obj1); operate(&obj2); } The question is how to know what the real type of given object in operate() without dynamic_cast and any type information in classes (constants, etc)? Function operate() is used with big array of objects in small time periods and dynamic_cast is too slow for it. And I don't want to include constants (enum obj_type { ... }) because this is not OOP-way. // module operate.cpp void some_operate(Base *pBase) { processA(pBase); processB(pBase); } void processA(A *pA) { } void processB(B *pB) { } I cannot directly pass a pBase to these functions. And it's impossible to have all possible combinations of classes, because I can add new classes just by including new .h files. As one of solutions that comed to mind, in editor application I can use a composite container: struct CompositeObject { vector<Base *pBase> parts; }; But editor does not need a time optimization and can use dynamic_cast for parts to determine the exact type. In operate() I cannot use this solution. So, is it possible to not use a dynamic_cast and type information to solve this problem? Or maybe I should use another architecture?

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