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• "java.security.AccessControlException: access denied" executing a signet Java Applet

  - by logoff

  I have a little Java Applet and I have an annoying issue. I have signed my JAR with my own keystore using jarsigner tool (following these instructions). The Java Applet downloads a signed JAR and tries to launch it with an extended class of URLClassLoader. This JAR tries to execute this line of code: ClassLoader.getSystemClassLoader().getResource("aResource"); It fails with a large stack trace finished by: Caused by: java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "getClassLoader") at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366) at java.security.AccessController.checkPermission(AccessController.java:555) at java.lang.SecurityManager.checkPermission(SecurityManager.java:549) at java.lang.Thread.getContextClassLoader(Thread.java:1451) ... 21 more When the Java Applet is launched, the user is prompted to accept the certificate if he/she trusts the publisher: Even if I accept it, the exception occurred. Even if I install the certificate, and the prompt message is automatically accepted, the exception occurred. Any help would be appreciated!

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• Silverlight SOS (Son of Strike) documenation

  - by Kris Erickson

  Is there any microsoft or even non-official documentation for SOS for Silverlight. Other than a few web posts I have seen zero documentation for it on MSDN. Even official documentation for the CLR version of SOS seems hard to find, this ancient article mentions a sos.htm file that is included in the windows SDK but it doesn't appear to be there any more. Any pointers to debugging Silveright with SOS? I have found the following blog posts but am looking for more information: http://davybrion.com/blog/2009/08/finding-memory-leaks-in-silverlight-with-windbg/ http://www.ningzhang.org/2008/12/19/silverlight-debugging-with-windbg-and-sos/ http://debuggingblog.com/wp/2009/07/07/windbg-extension-sos-in-clr-40net-framework-40-ctp-net-runtime-dll-renamed-and-sos-commands-just-got-richer/ http://www.netfxharmonics.com/label/debugging http://blogs.msdn.com/b/tess/archive/2008/08/21/debugging-silverlight-applications-with-windbg-and-sos-dll.aspx http://blogs.msdn.com/b/delay/archive/2009/03/11/where-s-your-leak-at-using-windbg-sos-and-gcroot-to-diagnose-a-net-memory-leak.aspx http://blogs.msdn.com/b/delay/archive/2009/03/09/controls-are-like-diapers-you-don-t-want-a-leaky-one-implementing-the-weakevent-pattern-on-silverlight-with-the-weakeventlistener-class.aspx

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• Mixing application modules between Silverlight and ASP.NET

  - by jkohlhepp

  Background: I work in a suite of ASP.NET applications that have several different "modules". The applications all share a main menu, so they all link to one-another. The modules are the high-level areas of the application. So, for example, it might be Payments, Orders, Customers, Products, etc. And Payments and Orders are in one app and Products and Customers are in another. Some of these menu links are "deep links", for example it might be a link to a particular page within the Customers module, such as Create New Customer. The issue: We are about to start a project that will add several more modules to this suite, probably as a new .NET application. I'm thinking about doing these new modules in Silverlight (for various reasons that are not material to the question). If I were to do that, I need to make the menu look the same as the menu in ASP.NET, as the users still need to feel like they are inside one "application". My questions: How should I organize the Silverlight project(s) so that I can "deep link" from ASP.NET pages into particular modules in the Silverlight app? What is even the best idea for creating these different Silverlight "modules"? If I had something that would've been a page in ASP.NET (for example - Create Customer), should each one of those be a separate Silverlight app? Or should it be a separate User Control? Or something else? Should I reuse our shared ASP.NET menu, and deep link to different Silverlight "modules" even within the new application? Or should I reimplement the menu in Silverlight for navigation within the app? Are there menu controls for Silverlight that look similar to ASP.NET menus (with flyout submenus in this case)? Could I maybe even share a SiteMap XML file between them? Edit: After looking around a bit more, it seems like PRISM might be the answer for some of my issues. It would allow me to modularize the different chunks of Silverlight that I have. And it would allow me to define a "master page" in Silverlight where I could host the menu. Do I have this right?

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• LINQ-to-XML selection based on node values, newbie question

  - by mmcglynn

  Given the following XML, I would like to return all eventtitles where the eventtype id = 23. My current query only looks at the first eventtype, so returns the wrong result. <event> <eventtitle>Garrison Keillor</eventtitle> <eventtypes> <eventtype id="24"/> <eventtype id="23"/> </eventtypes> </event> <event> <eventtitle>Joe Krown Trio featuring Walter Wolfman Washington</eventtitle> <eventtypes> <eventtype id="23"/> </eventtypes> </event> LINQ query: Dim query = _ From c In calXML...<event> _ Where c...<eventtypes>.<eventtype>.@id = "23" _ Select c.<eventtitle>.Value, c.<eventlocation>.Value For Each item In query Response.Write("<h3>" & item.eventtitle & "</h3>") Response.Write(item.eventlocation & "<br />") Next

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• Eclipse crashes during SVN merges

  - by Wing C. Chen

  I am currently using Eclipse Version: 3.5.1. It works perfectly in normal conditions, even with the SVN plugin, the faulty component that I am about to talk about now. The thing is that whenever I am conducting a merge, eclipse shuts down. It just crashes without even leaving an error message or anything else. It happens too often so that I can hardly normally. I am now using RapidSVN for merges. However, I would still like to know if there is any way to improve my eclipse condition.

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• Can I safely store UInt32 to NSInteger?

  - by mystify

  Is an NSInteger big enough for UInt32? Or is it even the same thing?

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• Filtering documents against a dictionary key in MongoDB

  - by Thomas

  I have a collection of articles in MongoDB that has the following structure: { 'category': 'Legislature', 'updated': datetime.datetime(2010, 3, 19, 15, 32, 22, 107000), 'byline': None, 'tags': { 'party': ['Peter Hoekstra', 'Virg Bernero', 'Alma Smith', 'Mike Bouchard', 'Tom George', 'Rick Snyder'], 'geography': ['Michigan', 'United States', 'North America'] }, 'headline': '2 Mich. gubernatorial candidates speak to students', 'text': [ 'BEVERLY HILLS, Mich. (AP) \u2014 Two Democratic and Republican gubernatorial candidates found common ground while speaking to private school students in suburban Detroit', "Democratic House Speaker state Rep. Andy Dillon and Republican U.S. Rep. Pete Hoekstra said Friday a more business-friendly government can help reduce Michigan's nation-leading unemployment rate.", "The candidates were invited to Detroit Country Day Upper School in Beverly Hills to offer ideas for Michigan's future.", 'Besides Dillon, the Democratic field includes Lansing Mayor Virg Bernero and state Rep. Alma Wheeler Smith. Other Republicans running are Oakland County Sheriff Mike Bouchard, Attorney General Mike Cox, state Sen. Tom George and Ann Arbor business leader Rick Snyder.', 'Former Republican U.S. Rep. Joe Schwarz is considering running as an independent.' ], 'dateline': 'BEVERLY HILLS, Mich.', 'published': datetime.datetime(2010, 3, 19, 8, 0, 31), 'keywords': "Governor's Race", '_id': ObjectId('4ba39721e0e16cb25fadbb40'), 'article_id': 'urn:publicid:ap.org:0611e36fb084458aa620c0187999db7e', 'slug': "BC-MI--Governor's Race,2nd Ld-Writethr" } If I wanted to write a query that looked for all articles that had at least 1 geography tag, how would I do that? I have tried writing db.articles.find( {'tags': 'geography'} ), but that doesn't appear to work. I've also thought about changing the search parameter to 'tags.geography', but am having a devil of a time figuring out what the search predicate would be.

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• Why can't WordPress create directories when uploading themes?

  - by Arman

  I can't workout how to solve this problem so wordpress would let me upload themes. I have a fresh copy of Fedora 17 installed on my dev machine. I then installed mysql using: yum install mysql mysql-server. Next I installed WordPress which also installs apache and php: yum install wordpress I can go to http://localhost/wordpress and see WordPress working. But when I try tried to install my theme it asked for ftp credentials. I then updated the wp-config.php file and set the FS_METHOD constant to direct. Now it doesn't ask for ftp credentials but it gives me this error: Could not create directory. /usr/share/wordpress/wp-content/themes/my-theme-name/ httpd service is running under 'apache' user and 'apache' group. The /usr/share/wordpress/ directory is recursively own by 'apache' user and 'apache' group too. I've even set the permissions to 777 (also recursively) and even then I keep getting the same error as above. How can I solve this problem?

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• How to migrate from SourceGear Fortress 1.1.x to TFS 2010?

  - by Jaxidian

  I found this question but it was only similar and, more importantly, dated by over a year. I'm hoping there is something I can't find out there and that is better than what that answer points to. Requirements: Preserve source code history (even if only loosely via text only since all of our prior users may not be created in the TFS repository) Preserve our item tracking history (again, even if just loosely since Fortress wasn't all that great about this). Ultimately, I want some searchable history of what we have done in the past and why. I don't necessarily need all of the hooks in place tying work items to source code or anything like that, but I do need discussions and decisions associated with the work items kept around.

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• wkhtmltopdf - cannot convert local file

  - by user522962

  I just downloaded version 10.0 for opensuse v. 11.3. I can convert a webpage (ie www.google.com) using it but cannot convert a local file. I grant all permissions on the file (& i've even tried running under sudo to no avail). This is the error: "Loading pages (1/6) Error: Failed loading page file:///file.html". The file exists but wkhtmltopdf refuses to load it. I even tried version 9.9 w/ the same result What am I missing?

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• C# COM objects with VB6/asp error

  - by Ken

  I'm trying to expose a C# class library via COM so that I can use it in a classic asp web site. I've used sn - k, regasm and gacutil. About all I can do now though is echo back strings. Methods which take Class variables as input are not working for me. ie my test method EchoPerson(Person p) which returns a string of the first and last name doesn't work. I get a runtime error 5 - Invalid procedure call or argument. Please let me know what I am missing. Also I have no intellisence in VB. What do I need to do to get the intellisence working. Below is my C# test code namespace MrdcToFastCom { public class Person : MrdcToFastCom.IPerson { public string FirstName { get; set; } public string LastName { get; set; } } public class ComTester : MrdcToFastCom.IComTester { public string EchoString(string s) { return ("Echo: " + s); } public string Hello() { return "Hello"; } public string EchoPerson(ref Person p) { return string.Format("{0} {1}", p.FirstName, p.LastName); } } } and VB6 call Private Sub btnClickMe_Click() Dim ct Set ct = New MrdcToFastCom.ComTester Dim p Set p = New MrdcToFastCom.Person p.FirstName = "Joe" p.LastName = "Test" Dim s s = ct.EchoPerson(p) 'Error on this line tbx1.Text = s End Sub

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• What language has the longest "Hello world" program?

  - by Kip

  In most scripting languages, a "Hello world!" application is very short: print "Hello world" In C++, it is a little more complicated, requiring at least 46 non-whitespace characters: #include <cstdio> int main() { puts("Hello world"); } Java, at 75 non-whitespace characters, is even more verbose: class A { public static void main(String[] args) { System.out.print("Hello world"); } } Are there any languages that require even more non-whitespace characters than Java? Which language requires the most? Notes: I'm asking about the length of the shortest possible "hello world" application in a given language. A newline after "Hello world" is not required. I'm not counting whitespace, but I know there is some language that uses only whitespace characters. If you use that one you can count the whitespace characters.

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• E-Mails sent from online form are coming in one single mail

  - by HasanGursoy

  I'm using an online form at one of my web sites. Every mail sent from this form is coming in one mail even if the senders IP is different. But I want every single mail to be unique even if the content is same. What I need to do to the mails or which header I need to modify? SmtpClient smtpClient = new SmtpClient(); MailMessage message = new MailMessage(); MailAddress fromAddress = new MailAddress("[email protected]", "NoReply"); MailAddress toAddress = new MailAddress("[email protected]", "Info"); MailAddress toSender = new MailAddress(tEMail.Text, tNameSurname.Text); message.From = fromAddress; message.Bcc.Add(toAddress); message.ReplyTo = toSender; message.Subject = tNameSurname.Text + " : contact"; message.IsBodyHtml = true; message.Body = "some html here"; smtpClient.Send(message);

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• ASP.NET MVC 2.0 Unused Model Property being called when posting a product to the server?

  - by Erx_VB.NExT.Coder

  i have my auto-generated linq to sql classes, and i extend this class using partial classing (instead of using inheritance), and i have properties that that i've put in later which are not part of the database model and should not be. these are things like "FinalPrice" and "DisplayFinalPrice" - in the dbase, there is only RetailPrice and WholesalePrice so FinalPrice etc are more like extensions of the dbase fields. when i submit the form with nothing filled in, "FinalPrice" gets called (the 'get' of the property) even tho i never ask for it to be, and even tho it is not needed. this happens before validation, so i don't even get the validation errors i would get. i've tried using and on the FinalPrice and FinalPriceDisplay properties - no go! why does this happen and how can i stop it from happening? is the modelstate just trying to validate everything so therefore it calls every item no matter what? for those interested, here is all the code... Partial Public Class tProduct 'Inherits tProduct Private Const CommissionMultiplier As Decimal = CDec(1.18) Private _FinalPrice As Decimal? Private _DisplayFinalPrice As String Private _DisplayNormalPrice As String Public Property CategoryComplete As Short <ScaffoldColumn(False)> Public ReadOnly Property FinalPrice As Decimal Get 'If RetailPrice IsNot Nothing OrElse WholesalePrice IsNot Nothing Then If _FinalPrice Is Nothing Then If RetailPrice IsNot Nothing Then _FinalPrice = RetailPrice Else _FinalPrice = WholesalePrice * CommissionMultiplier ' TODO: this should be rounded to the nearest 5th cent so prices don't look weird. End If Dim NormalPart = Decimal.Floor(_FinalPrice.Value) Dim DecimalPart = _FinalPrice.Value - NormalPart If DecimalPart = 0 OrElse DecimalPart = 0.5 Then Return _FinalPrice ElseIf DecimalPart > 0 AndAlso DecimalPart < 0.5 Then DecimalPart = 0.5 ' always rounded up to the nearest 50 cents. ElseIf DecimalPart > 0.5 AndAlso DecimalPart < 1 Then ' Only in this case round down if its about to be rounded up to a valeu like 20, 30 or 50 etc as we want most prices to end in 9. If NormalPart.ToString.LastChr.ToInt = 9 Then DecimalPart = 0.5 Else DecimalPart = 1 End If End If _FinalPrice = NormalPart + DecimalPart End If Return _FinalPrice 'End If End Get End Property <ScaffoldColumn(False)> Public ReadOnly Property DisplayFinalPrice As String Get If _DisplayFinalPrice.IsNullOrEmpty Then _DisplayFinalPrice = FormatCurrency(FinalPrice, 2, TriState.True) End If Return _DisplayFinalPrice End Get End Property Public ReadOnly Property DisplayNormalPrice As String Get If _DisplayNormalPrice.IsNullOrEmpty Then _DisplayNormalPrice = FormatCurrency(NormalPrice, 2, TriState.True) End If Return _DisplayNormalPrice End Get End Property Public ReadOnly Property DivID As String Get Return "pdiv" & ProductID End Get End Property End Class more... i get busted here, with a null reference exception telling me it should contain a value... Dim NormalPart = Decimal.Floor(_FinalPrice.Value)

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• IE7 float/clear bug

  - by alex

  I am having the weirdest behavior in IE7 on this page. I have a clear: left on #moored that makes sure that #content-container will expand to the height of the float: left'd #content. Of course, Firefox and IE8 do it right. The weird thing though, is in IE7, it appears that #content-container is automatically expanding to contain the #secondary-content, which it shouldn't. Even weirder is when I view with IE8 with developer tools, the boundary boxes seem to show the that the #content-container is the expanding to the height of the #secondary-container, even though the background: #fff tells a different story. The background goes to where it should, and the void is now black. I've Googled a bit and came across heaps of similar float bugs, but I don't think I've found one which offers a fix yet for this circumstance. Can anyone please help me?

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• Unicode characters in URLs

  - by Pekka

  In 2010, would you serve URLs containing UTF-8 characters in a large web portal? Unicode characters are forbidden as per the RFC on URLs (see here). They would have to be percent encoded to be standards compliant. My main point, though, is serving the unencoded characters for the sole purpose of having nice-looking URLs, so percent encoding is out. All major browsers seem to be parsing those URLs okay no matter what the RFC says. My general impression, though, is that it gets very shaky when leaving the domain of web browsers: URLs getting copy+pasted into text files, E-Mails, even Web sites with a different encoding HTTP Client libraries Exotic browsers, RSS readers Is my impression correct that trouble is to be expected here, and thus it's not a practical solution (yet) if you're serving a non-technical audience and it's important that all your links work properly even if quoted and passed on? Is there some magic way of serving nice-looking URLs in HTML http://www.example.com/düsseldorf?neighbourhood=Lörick that can be copy+pasted with the special characters intact, but work correctly when re-used in older clients?

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• How to kill msvsmon.exe when finished remote debugging?

  - by dferraro

  Hi, We are a .NET LOB shop using MS CRM as our CRM platform. To this end, we many times a day during development phases are using remote debugging due to 2 connection limit to the server. We are able to setup remote debugging without logging onto the machine by using PsExec. This works great - but how the heck do we kill the remote debugger for that user, once we are finished debugging? In fact, not even sure how to kill the remote debugger in general, even when manually opening it... without remoting into server and using task manager, or keeping the server open and doing File-Exit on the debugger. Any advice?

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• How can I use a regular expression to match something in the form 'stuff=foo' 'stuff' = 'stuff' 'mor

  - by PherricOxide

  I need a regexp to match something like this, 'text' | 'text' | ... | 'text'(~text) = 'text' | 'text' | ... | 'text' I just want to divide it up into two sections, the part on the left of the equals sign and the part on the right. Any of the 'text' entries can have "=" between the ' characters though. I was thinking of trying to match an even number of 's followed by a =, but I'm not sure how to match an even number of something.. Also note I don't know how many entries on either side there could be. A couple examples, '51NL9637X33' | 'ISL6262ACRZ-T' | 'QFN'(~51NL9637X33) = '51NL9637X33' | 'ISL6262ACRZ-T' | 'INTERSIL' | 'QFN7SQ-HT1_P49' | '()' Should extract, '51NL9637X33' | 'ISL6262ACRZ-T' | 'QFN'(~51NL9637X33) and, '51NL9637X33' | 'ISL6262ACRZ-T' | 'INTERSIL' | 'QFN7SQ-HT1_P49' | '()' '227637' | 'SMTU2032_1' | 'SKT W/BAT'(~227637) = '227637' | 'SMTU2032_1' | 'RENATA' | 'SKT28_5X16_1-HT5_4_P2' | '()' :SPECIAL_A ='BAT_CR2032', PART_NUM_A='202649' Should extract, '227637' | 'SMTU2032_1' | 'SKT W/BAT'(~227637) and, '227637' | 'SMTU2032_1' | 'RENATA' | 'SKT28_5X16_1-HT5_4_P2' | '()' :SPECIAL_A ='BAT_CR2032', PART_NUM_A='202649' Also note the little tilda bit at the end of the first section is optional, so I can't just look for that.

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• How to limit JTextArea max Rows and Coloums?

  - by Billbo bug

  I am using JTextArea in JScrollPane I want to limit the maximum number of lines possible and the maximum chars in each line. I need that the string will be exactly like on the screen, each line will end with '\n' (if there another line after it) and the user will be able to insert only X lines and Y chars in each line. I tried to limit the lines but i don't know exactly how many lines do i have because of the line wrapping, The line wrapping is starting new line visualy on the screen(because of the width of the JTextArea) but in the string of the component it is really the same line with no '\n' to indicate new line. I do not have an idea how to limit the max chars in each line while typing. There are 2 stages: The typing of the string- keep that the user will not be able to type more then X lines and Y chars in each line. (even if the line wrap only visualy or the user typed '/n') Insert the string to the DB- after cliking 'OK' convert the string that every line will end with "/n" even if the user did not typed it and the line was wrapped only visualy. There are few problems if i will count the chars in the line and insert '/n' in the end of the line, thats why i decided to do it in two stages. In the first stage ehile the user is typing i would rather only limit it visualy and force line wrpping or something similar. Only in the second stage when i save string i will add the '/n' even if the user did not typed it in the end of the lines! Does anyone have an idea? I know that i will have to use DocumentFilter OR StyledDocument. Here is sample code that limit only the lines to 3:(but not the chars in row to 19) private JTextArea textArea ; textArea = new JTextArea(3,19); textArea .setLineWrap(true); textArea .setDocument(new LimitedStyledDocument(3)); JScrollPane scrollPane = new JScrollPane(textArea public class LimitedStyledDocument extends DefaultStyledDocument /** Field maxCharacters */ int maxLines; public LimitedStyledDocument(int maxLines) { maxCharacters = maxLines; } public void insertString(int offs, String str, AttributeSet attribute) throws BadLocationException { Element root = this.getDefaultRootElement(); int lineCount = getLineCount(str); if (lineCount + root.getElementCount() <= maxLines){ super.insertString(offs, str, attribute); } else { Toolkit.getDefaultToolkit().beep(); } } /** * get Line Count * * @param str * @return the count of '\n' in the String */ private int getLineCount(String str){ String tempStr = new String(str); int index; int lineCount = 0; while (tempStr.length() > 0){ index = tempStr.indexOf("\n"); if(index != -1){ lineCount++; tempStr = tempStr.substring(index+1); } else{ break; } } return lineCount; } }

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• Stable random color algorithm

  - by Olmo

  Here we have an interesting real-world algorithm requirement involving colors. 1) Nice random colors: In ordeeing to draw a beautifull chart (i.e: pie chart) we need to pick a random set of Colors that: a) are different enought b) Play nicely Doesnt Look hard. For example u fix bright and saturation and divide hue in steps of 360/Num_sectors 2) Stable: given Pie1 with sectors with labes ('A','B','C') and Pie2 with sector with labels ('B','C','D'), will be nice if color('B',pie1)= color('B',pie2) and the same for 'C' and so on, so people don't get crazy when seeing similar updated charts, even if some sectors appear some dissapeared or the number of sectors changed. The label is the only stable thing. 3) hard-coded colors: the algorithm allows hardcoded label-color relationships as an input but stills doing a good work (1 & 2) for the rest of free labels. I think this algorithm, even if it looks quite ad-hoc, will be usefull in more then one situation. Any ideas?

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• NSURLConnection still calls delegate AFTER cancel method has been called

  - by Shizam

  Hi All, Having a problem with NSURLConnection, if I create a NSURLConnection and call [connection connectionWithRequest] let it load a little then call [connection cancel] most of the time that works fine. However occasionally even after I call [connection cancel] the connection's delegate still gets called (which crashes the app). Googling around it looks like the problem here is a race condition in the runloop, I cancel the connection and release the delegate but before the runloop cycles it calls the delegate functions - crash. Is there a way for me to, after I call [connection cancel] confirm the connection has actually canceled? Even a crappy while() loop will do :(

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• Unexpected Blank lines in python output

  - by Martlark

  I have a bit of code that runs through a dictionary and outputs the values from it in a CSV format. Strangely I'm getting a couple of blank lines where all the output of all of the dictionary entries is blank. I've read the code and can't understand has anything except lines with commas can be output. The blank line should have values in it, so extra \n is not the cause. Can anyone advise why I'd be getting blank lines? Other times I run the missing line appears. Missing line: 6415, 6469, -4.60, clerical, 2, ,,,joe,030193027org,joelj,030155640dup Using python 2.6.5 Bit of code: tfile = file(path, 'w') tfile.write('Rec_ID_A, Rec_ID_B, Weight, Assigned, Run, By, On, Comment\n') rec_num_a = 0 while (rec_num_a <= max_rec_num_a): try: value = self.dict['DA'+str(rec_num_a)] except: value = [0,0,0,'rejected'] if (value[3]!='rejected'): weightValue = "%0.2f" % value[2] line = value[0][1:] + ', ' + value[1][1:] + ', ' + weightValue \ + ', ' + str(value[3]) + ', ' + str(value[4]) if (len(value)>5): line = line + ', ' + value[5] + ',' + value[6] + ',' + value[7] (a_pkey, b_pkey) = self.derive_pkeys(value) line = line + a_pkey + b_pkey tfile.write( line + '\n') rec_num_a +=1 Sample output 6388, 2187, 76.50, clerical, 1, ,,,cameron,030187639org,cameron,030187639org 6398, 2103, 70.79, clerical, 1, ,,,caleb,030189225org,caldb,030189225dup 6402, 2205, 1.64, clerical, 2, ,,,jenna,030190334org,cameron,020305169dup 6409, 7892, 79.09, clerical, 1, ,,,liam,030191863org,liam,030191863org 6416, 11519, 79.09, clerical, 1, ,,,thomas,030193156org,thomas,030193156org 6417, 8854, 6.10, clerical, 2, ,,,ruby,030193713org,mia,020160397org 6421, 2864, -0.84, clerical, 2, ,,,kristin,030194394org,connou,020023478dup 6423, 413, 75.63, clerical, 1, ,,,adrian,030194795org,adriah,030194795dup

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• Linq Query Performance , comparing Compiled query vs Non-Compiled.

  - by AG.

  Hello Guys, I was wondering if i extract the common where clause query into a common expression would it make my query much faster, if i have say something like 10 linq queries on a collection with exact same 1st part of the where clause. I have done a small example to explain a bit more . public class Person { public string First { get; set; } public string Last { get; set; } public int Age { get; set; } public String Born { get; set; } public string Living { get; set; } } public sealed class PersonDetails : List<Person> { } PersonDetails d = new PersonDetails(); d.Add(new Person() {Age = 29, Born = "Timbuk Tu", First = "Joe", Last = "Bloggs", Living = "London"}); d.Add(new Person() { Age = 29, Born = "Timbuk Tu", First = "Foo", Last = "Bar", Living = "NewYork" }); Expression<Func<Person, bool>> exp = (a) => a.Age == 29; Func<Person, bool> commonQuery = exp.Compile(); var lx = from y in d where commonQuery.Invoke(y) && y.Living == "London" select y; var bx = from y in d where y.Age == 29 && y.Living == "NewYork" select y; Console.WriteLine("All Details {0}, {1}, {2}, {3}, {4}", lx.Single().Age, lx.Single().First , lx.Single().Last, lx.Single().Living, lx.Single().Born ); Console.WriteLine("All Details {0}, {1}, {2}, {3}, {4}", bx.Single().Age, bx.Single().First, bx.Single().Last, bx.Single().Living, bx.Single().Born); So can some of the guru's here give me some advice if it would be a good practice to write query like var lx = "Linq Expression " or var bx = "Linq Expression" ? Any inputs would be highly appreciated. Thanks, AG

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• XCode toolchain error: dyld: Symbol not found: _objc_collect_if_needed

  - by freespace

  I have been seeing the following error message a lot whenever I build something using the simulator: dyld: Symbol not found: _objc_collect_if_needed Referenced from: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk/System/Library/Frameworks/Foundation.framework/Foundation Expected in: /usr/lib/libobjc.A.dylib in /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk/System/Library/Frameworks/Foundation.framework/Foundation I am running XCode 3.2.2 on OS X 10.6.3, and have reinstalled the SDK twice with no avail. This error makes running any code on the simulator something of a Russian Roulette, but with 5 out of 6 chambers loaded. I have checked the files mentioned in the error message, and they all checkout as being present. This sometimes go away if I restart XCode. Other times I have to logout, or even restart. And sometimes nothing works. I have googled this, even tried apple's developer forums. Other than a reference to this in the MonoTouch list, this bug appears to be completely unknown otherwise. Anything help would be greatly appreciated - this is a real PITA. Cheers, Steve

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• Can't read from aspnet_client folder for crystal reports

  - by Hank Allen

  I created a little ASP .Net app to run Crystal Reports. It runs fine from VS 2008 but not when deployed to IIS on Windows 7. The toolbar images are not rendered. The problem seems to be I can't read from the aspnet_client folder even though I've made into a virtual directory. I can't even read images I put in there just to see if the folder can be read from an ASP page. I also made sure the IIS user can read from there. I'm stumped.

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