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• How to Avoid Maven builds stall on ssh host authenticity problem?

  - by Peter Kahn

  What's the right way to keep ssh host authenticity from being a problem for maven and hudsno builds? I have hudson building my maven project on a VM. When the ESX server with my VMs on it is taxed some of my jobs will stall out stuck in a loop of ssh host authenticity problems. The hosts were in the known hosts file, but during these times the clocks on the slave VMs have drifted far from those of my maven repo. [INFO] Retrieving previous build number from snapshots The authenticity of host 'maven.mycorp.com' can't be established. DSA key fingerprint is 6d:....83. Are you sure you want to continue connecting? (yes/no): The authenticity of host 'maven.mycorp.com' can't be established. Is there something other than disabling host checking (CheckHostIP no)?

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• question about select() and range of for loop to read sockets

  - by Fantastic Fourier

  Just a quick question about using select(). I'm using select() to read from multiple sockets. When I looked up examples on how to use select(), a lot of tutorials showed going through for loops and checking for FD_ISSET. The problem I have with those tutorials is that the for loop starts from i = 0. and checks if the bit has been set for the file descriptor i using FD_ISSET. Couldn't the for loop start from say your minfd (just like how you would keep track of maxfd)?? Or am I missing something?? Following link is an example of such for loop (look at the fourth example that he gives) http://www.developerweb.net/forum/showthread.php?t=2933 If that was the only example out there that used such for loop, I might understand it was a mistake or bad coding but I've seen several examples of such for loop of uselessly going through literally thousands of sockets and I'm convinced I'm missing something. Any comments or inputs are appreciated.

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• Best way to check for null values in Java?

  - by Arty-fishL

  I need to check whether the function of an object returns true or false in Java, but that object may be null, so obviously then the function would throw a NullPointerException. This means I need to check if the object is null before checking the value of the function. What is the best way to go about this? I've listed some methods I considered, I just want to know the most sensible one, the one that is best programming practice for Java (opinion?). // method 1 if (foo != null) { if (foo.bar()) { etc... } } // method 2 if (foo != null ? foo.bar() : false) { etc... } // method 3 try { if (foo.bar()) { etc... } } catch (NullPointerException e) { } // method 4 // would this work all the time, would it still call foo.bar()? if (foo != null && foo.bar()) { etc... }

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• Desktop application validity

  - by Umesh

  I am creating a desktop application using AIR. In that application user is allowed to download some resources which have life span of 2 days. I am storing the date when the user is downloaded. But how can i check whether the date is passed 2 days or not? Right now I am checking with the current system date.But when the user changes the system date to back, it will start to work which i dont want. How the desktop applications say like flex builder and all having trial period.? How are they tracking the dates remaining? ~Umesh

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• How to generate one large dependency map for the whole project that builds with makefiles?

  - by Stan

  I have a gigantic project that is built using makefiles. Running make at the root of the project takes over 20 minutes when no files have changed (i.e. just traversing the project and checking for updated files). I'd like to create a dependency map that will tell me which directories I need to run 'make' in based on the file(s) changed. I already have a list of updated files that I can get from my version control system, and I'd like to skip the 20 minutes of traversing and get straight to the locations that do need to be recompiled. The project has a mix of several languages and custom tools, so this would ideally be language-independent (i.e. it would only process all makefiles to generate dependencies). I'll settle for a C/C++-specific solution, too, as the majority of the project is in C++. The project is built on Linux.

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• Problem with CSS on Wordpress

  - by Tdasads

  Hi there! I'm trying to code my sidebar.php but it breaks and goes all the way down below the posts PHP: <!-- begin sidebar --> <div id="menu"> <?php /* Widgetized sidebar, if you have the plugin installed. */ if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar() ) : ?> <label for="s">SEARCH</label> <form id="searchform" method="get" action="#"> <div> <input type="text" name="s" id="s" size="15" /> <br /> <input type="submit" value="TYPE HERE_" /> </div> </form> <div class="bg-sidebar"> <h2>MOST READ</h2> <ul> <li><a href="javascript:void(0);">Worth A Thousand Words</a></li> <li><a href="javascript:void(0);">Feed Your Head</a></li> <li><a href="javascript:void(0);">Aliquam tempus, eros commodo porta pretium</a></li> <li><a href="javascript:void(0);">Pellentesque quis libero dui</a></li> <li><a href="javascript:void(0);">Lorem ipsum dolor sit amet</a></li> </ul> <h2>RECENT POSTS</h2> <ul> <li><a href="javascript:void(0);">Worth A Thousand Words</a></li> <li><a href="javascript:void(0);">Feed Your Head</a></li> <li><a href="javascript:void(0);">Aliquam tempus, eros commodo porta pretium</a></li> <li><a href="javascript:void(0);">Pellentesque quis libero dui</a></li> <li><a href="javascript:void(0);">Lorem ipsum dolor sit amet</a></li> </ul> <h2>ARCHIVE</h2> <ul> <li> <?php wp_get_archives('type=monthly'); ?> </li> </ul> <h2>LINKS</h2> <ul> <li><a href="http://www.t.com">t</a></li> <li><a href="http://www.tt.com">tt</a></li> </ul> </div> <?php endif; ?> </div> CSS: * { margin: 0; padding: 0; } body, input { font-family: "Trebuchet MS"; font-size: 12px; } .move { clear: both; height: 0; float: none !important; } body { background: url(images/bg.gif); width: 991px; position: absolute; top: 0; left: 50%; margin: 0 0 0 -495px; padding: 0 0 71px 0; } a { text-decoration: none; } li { list-style: none; } img { border: 0; } #searchform { float: left; width: 366px; height: 27px; } #searchform * { float: left;} #searchform label { width:75px; height: 26px; border: solid 1px #ab0000; border-width: 1px 1px 0 0; text-align: center; line-height: 25px; font-weight: bold; font-size: 18px; color: #ab0000; background: white; } #searchform p { border-bottom: solid 1px #ab0000; width: 290px; height: 25px; } #searchform input { border: 0; margin: 6px 0 0 10px; display: inline; width: 234px; font-weight: bold; color: #999999; background: transparent; outline: none; height: 16px; } #searchform button { background: url(images/btn_vai.gif); width: 34px; height: 24px; border: 0; margin: 0 0 2px 0; float: right; } #menu { width: 366px; height: 40px; float: left; margin: 1px 0 0 0; } .bg-sidebar { background: white; width: 366px; padding: 50px 0 0 0; } #menu h2 { color: #ab0000; font-size: 18px; line-height: 18px; padding: 0 0 10px 15px; } #menu ul { border-top: solid 1px #d5d5d5; padding: 0 0 38px 0; } #menu li { border-bottom: solid 1px #f3f2f2; line-height: 30px; font-size: 13px; font-weight: bold; padding: 0 0 0 24px; } #menu li a { color: black; } Can somebody help me out on this one?

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• Storing uploaded content on a website

  - by Matt

  For the past 5 years, my typical solution for storing uploaded files (images, videos, documents, etc) was to throw everything into an "upload" folder and give it a unique name. I'm looking to refine my methods for storing uploaded content and I'm just wondering what other methods are used / preferred. I've considered storing each item in their own folder (folder name is the Id in the db) so I can preserve the uploaded file name. I've also considered uploading all media to a locked folder, then using a file handler, which you pass the Id of the file you want to download in the querystring, it would then read the file and send the bytes to the user. This is handy for checking access, and restricting bandwidth for users.

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• Kohana3 - Auth Module deleting User while he is logged in bug

  - by ahmet2106

  Hello Stackoverflow Users, Today I've tested the Kohana3, which has been changed a lot. I'm working so much with the Auth Module, and need this in my new Project also. Now I found a Bug, I think it is a bug, what can I do? Problem: After I'm deleting a user from the Database, who is at this Moment logged_in() in my Website, and he is refreshing the page, he will be logged_in() as the first user out of the PRAEFIX_users Table. Even if he is deleted. And 99% this is an Administrator. My function which is checking and redirecting if he is not logged_in(): if(!Auth::instance()->logged_in()) { $this->request->redirect( 'login' ); } How can i change my Check Login so, that if he is deleted, he will be redirected to login (/login/) ? Here the same Thread at Kohana Forums, but I hope and think, stackoverflow is a litte bit faster :)

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• Cannot pull newly-added top-level directory into sparsely-checked out SVN repository

  - by Tim Keating

  Our SVN repository is quite large, and pulling the whole thing takes some time. When checking out at home, I was pleased to discover the sparse checkout feature; I checked out the whole repository to a depth of 1, then pulled each top-level directory (directly under the trunk) that I needed to a depth of infinity. Until now this has been brilliant. Recently I added a new directory under trunk. When I do a svn up, I get nothing. The TLD I added will not sync. I normally use Tortoise SVN, so I tried doing this from command line. I tried explicitly specifying the name of the directory, adding --depth infinity, adding --force. None of these tricks has worked. What am I missing?

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• Trying to parse xml, but xmldocument.loadxml() is trying to download?

  - by maxp

  I have a string input that i do not know whether or not is valid xml. I think the simplest aprroach is to wrap new XmlDocument().LoadXml(strINPUT); In a try/catch. The problem im facing is, sometimes strINPUT is an html file, if the header of this file contains <!DOCTYPE html PUBLIC ""-//W3C//DTD XHTML 1.0 Transitional//EN"" ""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd""> <html xml:lang=""en-GB"" xmlns=""http://www.w3.org/1999/xhtml"" lang=""en-GB""> ...like many do, it actually tries to make a connection to the w3.org url, which i really dont want it doing. Anyone know if its possible to just parse the string without trying to be clever and checking external urls? Failing that is there an alternative to xmldocument?

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• Binary search of unaccesible data field in ldap from python

  - by EricR

  I'm interested in reproducing a particular python script. I have a friend who was accessing an ldap database, without authentication. There was a particular field of interest, we'll call it nin (an integer) for reference, and this field wasn't accessible without proper authentication. However, my friend managed to access this field through some sort of binary search (rather than just looping through integers) on the data; he would check the first digit, check if it was greater or less than the starting value, he would augment that until it returned a true value indicating existence, adding digits and continuing checking until he found the exact value of the integer nin. Any ideas on how he went about this? I've access to a similarly set up database.

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• Adding WCF service reference adds DataContract types too

  - by Avi Shilon

  Hi everybody, I've used Visual Studio's Add Service Reference feature to add a service (actually it is a workflow service, created in WF4 RC1, but I don't think this makes any difference), and it also added the DataContracts that the service uses. At first this seemed fine, because All I've had in the DataContracts was simply properties, with no implementations. But now I've added code in the constructor of one data contracts that initializes creates an instance of one of the properties that exposes a list of other DCs, and when I've updated the service reference via VS (2010 RC1), the implementation was not updated. What should I do? Should I use my DCs instead of the ones created by VS or should I use the ones VS created? I've noticed that the properties in the VS-generated DCs contain some additional logic for checking equality in the setters and they also implement some interfaces too (like IExtensibleDataObject and INotifyPropertyChanged) which might get handy I guess in the future (I'm not knowledgeable at WCF). Thank you for your time folks, Avi

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• How can I compare my PHPASS-hashed stored password to my incoming POST data?

  - by Ygam

  Here's a better example, just a simple checking..stored value in database has password: fafa (hashed with phpass in registration) and username: fafa; i am using the phpass password hashing framework public function demoHash($data) //$data is the post data named password { $hash =new PasswordHash(8, false); $query = ORM::factory('user'); $result = $query ->select('username, password') ->where('username', 'fafa') ->find(); $hashed = $hash->HashPassword($data); $check = $hash->CheckPassword($hashed, $result->password); echo $result->username . "<br/>"; echo $result->password . "<br/>"; return $check; } check is returning false

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• Rounding floating-point numbers to 4 decimal points

  - by Himadri

  I have two decimal numbers. I want those number to be same upto 4 decimal points without rounding. If numbers are different I want 2nd number to be replaced by 1st. What if condition should I write? Eg, 1. num1 = 0.94618976 num2 = 0.94620239 If we round these numbers upto 4 decimal then we get 0.9462 same number, but I don't want to round these numbers. 2. num1 = 0.94620239 num2 = 0.94639125 The one way I found is take absolute difference of both numbers say diff and then check the value. My problem is of checking the range of diff. Thank You.

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• How to handle redirection in an Ajax based application

  - by nimo

  hi all, I'm developing a Ajax based php application. As anybody knows, I'm checking whether user is logged in every php file as the first statement. And there are two ways that I should response in an event of logging failure, server redirect to the login page using header(url). CASE: If user directly enter a particular URL passing url in Ajax response asking client side page redirection or notification CASE: If user trying to perform some action through a Ajax request So my question is how can identify whether request coming from client side is a Ajax call or not ? If I know that I can handle my response accordingly. OR Is there a better way of handling above scenario ? Thank You

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• Push origin master error on new repository.

  - by thaiyoshi

  I just started using git with github. I followed their instructions and ran into errors on the last step. I'm checking in an existing directory that isn't currently source-controlled (project about a week old). Other than that, my use case should be pretty run of the mill. Here's what's happening: $ git push origin master error: src refspec master does not match any. fatal: The remote end hung up unexpectedly error: failed to push some refs to '[email protected]:{username}/{projectname}.git' Github's instructions: Global setup: Download and install Git git config --global user.name "Your Name" git config --global user.email {username}@gmail.com Next steps: mkdir projectname cd projectname git init touch README git add README git commit -m 'first commit' git remote add origin [email protected]:{username}/{projectname}.git git push origin master

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• Adding to a multidimensional array in PHP

  - by b. e. hollenbeck

  I have an array being returned from the database that looks like so: $data = array(201 => array('description' => blah, 'hours' => 0), 222 => array('description' => feh, 'hours' => 0); In the next bit of code, I'm using a foreach and checking the for the key in another table. If the next query returns data, I want to update the 'hours' value in that key's array with a new hours value: foreach ($data as $row => $value){ $query = $db->query($sql); if ($result){ $value['hours'] = $result['hours']; } I've tried just about every combination of declarations for the foreach loop, but I keep getting the error that it's a non-object. Surely this is easier than my brain is perceiving it.

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• When to choose "Generate an activator..." when creating a new Eclipse plugin project

  - by Anon Support 2010

  There are lots of Eclipse RCP tutorials that begin with "Create a new plugin project..." It seems that approx. 70% of them specify checking the Generate an activator, a Java class that controls the plug-in life cycle. The others specifically say don't check that toggle. Its not clear to me, what generating an activator class does for you, when you need one, and when you don't. For being a prominent option you get every time you create a new plugin project (it seems to be set on by default) this option isn't very well explained anywhere that I have found. Any advice/rules of thumb on choosing this option when creating Eclipse plugin projects?

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• git reference common directory/repo

  - by phillee

  Project layout: /project_a /shared /project_b /shared /shared project_a and project_b both need to contain the shared folder. With svn, we used svn:externalsand that worked fine, since svn can reference subdirs (with relative paths too). However, we moved to git and it seems to not support checking out subdirs. Our solution now is to put project_a, project_b and shared all in different git repos, and use git submodules in project_a and project_b. However this seems much more complicated than one monolithic svn repo with svn:externals. What's the correct way to handle common elements in git?

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• Delphi Typed Constants in Case Statements

  - by Andreas Rejbrand

  What is the most elegant (or least ugly) way of using typed constants in a case statement in Delphi? That is, assume for this question that you need to declare a typed constant as in const MY_CONST: cardinal = $12345678; ... Then the Delphi compiler will not accept case MyExpression of MY_CONST: { Do Something }; ... end; but you need to write case MyExpression of $12345678: { Do Something }; ... end; which is error-prone, hard to update, and not elegant. Is there any trick you can employ to make the compiler insert the value of the constant (preferably by checking the value of the constant under const in the source code, but maybe by looking-up the value at runtime)? We assume here that you will not alter the value of the "constant" at runtime.

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• Syncing with Address Book: Last modified property in ABPerson/ABRecord

  - by Oliver

  I'm syncing data from the Address Book into a Core Data database and I've nearly got it working perfectly. The only issue remaining is checking for changes and modifications on startup and reflecting the changes inside Core Data. Currently, I simply check the ID of each ABRecord and see if it is already in Core Data. Of course, this only works in the case of new contacts and not changed information inside an existing contact. One solution would be to go through each contact already in the database and check each property against the Address Book. The down side of this is that it's really slow. One method that would work is if the ABRecord had a last modified date. I could then store the date inside the Core Data database and check on startup to see if I need to update the contact. However, I can't find anything like this in the documentation. Any ideas?

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• Dynamically removing records when certain columns = 0; data cleansing

  - by cdburgess

  I have a simple card table: CREATE TABLE `users_individual_cards` ( `id` int(11) NOT NULL AUTO_INCREMENT, `user_id` char(36) NOT NULL, `individual_card_id` int(11) NOT NULL, `own` int(10) unsigned NOT NULL, `want` int(10) unsigned NOT NULL, `trade` int(10) unsigned NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `user_id` (`user_id`,`individual_card_id`), KEY `user_id_2` (`user_id`), KEY `individual_card_id` (`individual_card_id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1; I have ajax to add and remove the records based on OWN, WANT, and TRADE. However, if the user removes all of the OWN, WANT, and TRADE cards, they go to zero but it will leave the record in the database. I would prefer to have the record removed. Is checking after each "update" to see if all the columns = 0 the only way to do this? Or can I set a conditional trigger with something like: //psuedo sql AFTER update IF (OWN = 0, WANT = 0, TRADE = 0) DELETE What is the best way to do this? Can you help with the syntax?

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• Check if there are any repeated elements in a array recursively

  - by devoured elysium

  I have to find recursively if there is any repeated element in an integer array v. The method must have the following signature: boolean hasRepeatedElements(int[] v) I can't see any way of doing that recursively without having to define another method or at least another overload to this method (one that takes for example the element to go after or something). At first I thought about checking for the current v if there is some element equal to the first element, then creating a new array with L-1 elements etc but that seems rather inefficient. Is it the only way? Am I missing here something?

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• Excel VBA to check autofilter for data

  - by cav719

  I need help checking for autofiltered rows not including the header. I want it to give a message box "No records found." then exit sub or continue with copy paste if there are rows beyond the header row. I know I need an If/Else entry after the filter to check for data but I'm having trouble figuring how to check. This code is being done from a UserForm I created. Here is my script: Private Sub Searchbycompanyfield_Click() If CompanyComboBox1.Value = "" Then MsgBox "Please enter a Company to begin search." Exit Sub End If ActiveSheet.Range("$A:$H").AutoFilter Field:=1, Criteria1:=EQDataEntry.CompanyComboBox1.Value, Operator:=xlOr Cells.Select Selection.Copy Sheets("Sheet2").Select Range("A5").Select ActiveSheet.Paste Call MessageBoxYesOrNoMsgBox End Sub Any help would be greatly appreciated.

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• Best practices for using Amazon SQS - Polling the queue

  - by alex

  I'm designing a service for sending out emails for our eCommerce site (order confirmations, alerts etc...) The plan is to have a "SendEmail" method, that generates a chunk of XML representing the email to be sent, and sticks it on an Amazon SQS queue. My web app(s) and other applications will use this to "send" emails. I then require a way of checking the queue, and physically sending out the email messages. (I know how I'm going to be dispatching emails) I'm curious as to what the best way to "poll" the queue would be? Should I create a windows service, and use something like Quartz.net to schedule it to check the queue every x number of minutes for example? Is there a better way of doing this?

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