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• Where can I find the source code for a task queue implemented by C++ for Open MPI

  - by Jack

  hi Where can I find the source code for a task queue implemented by C++ for Open MPI ? I search it online, but cannot find it. Any help is appreciated. thanks Jack April 25 2010

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• iPhone app distribution: What name will appear on the AppStore?

  - by Jack Griffiths

  Hi there, Is there a way to change the name that displays on the AppStore, rather than the name associated with the credit card/apple ID associated with the developer programme? For example, if my name on my credit card was foo, and the name on the apple ID was foo, but I actually want the name displayed on the AppStore (i.e. next to my App's name and details) to be bar. BTW: The programme is individual. Many thanks, Jack

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• HTML Agility Pack Screen Scraping XPATH isn't returning data

  - by Matthias Welsh

  I'm attempting to write a screen scraper for Digikey that will allow our company to keep accurate track of pricing, part availability and product replacements when a part is discontinued. There seems to be a discrepancy between the XPATH that I'm seeing in Chrome Devtools as well as Firebug on Firefox and what my C# program is seeing. The code I'm currently using is pretty quick and dirty... //This function retrieves data from the digikey private static List<string> ExtractProductInfo(HtmlDocument doc) { List<HtmlNode> m_unparsedProductInfoNodes = new List<HtmlNode>(); List<string> m_unparsedProductInfo = new List<string>(); //Base Node for part info string m_baseNode = @"//html[1]/body[1]/div[2]"; //Write part info to list m_unparsedProductInfoNodes.Add(doc.DocumentNode.SelectSingleNode(m_baseNode + @"/table[1]/tr[1]/td[1]/table[1]/tr[1]/td[1]")); //More lines of similar form will go here for more info //this retrieves digikey PN foreach(HtmlNode node in m_unparsedProductInfoNodes) { m_unparsedProductInfo.Add(node.InnerText); } return m_unparsedProductInfo; } Although the path I'm using appears to be "correct" I keep getting NULL when I look at the list "m_unparsedProductInfoNodes" Any idea what's going on here? I'll also add that if I do a "SelectNodes" on the baseNode it only returns a div... not sure what that indicates but it doesn't seem right.

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• save xml object so that elements are in sorted order in saved xml file

  - by scot

  Hi , I am saving a xml document object and it is saved in a xml file as shown below . <author name="tom" book="Fun-II"/> <author name="jack" book="Live-I"/> <author name="pete" book="Code-I"/> <author name="jack" book="Live-II"/> <author name="pete" book="Code-II"/> <author name="tom" book="Fun-I"/> instead i want to sort the content in document object so that when i persist the object it is saved by grouping authors then book name as below: <author name="jack" book="Live-I"/> <author name="jack" book="Live-II"/> <author name="pete" book="Code-I"/> <author name="pete" book="Code-II"/> <author name="tom" book="Fun-I"/> <author name="tom" book="Fun-II"/> I use apache xml beans..any ideas on how to achieve this? thanks.

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• Excel VBA Text To Column

  - by Pat

  This is what I currently have: H101 John Doe Jane Doe Jack Doe H102 John Smith Jane Smith Katie Smith Jack Smith And here is what I want: H101 John Doe H101 Jane Doe H101 Jack Doe H102 John Smith H102 Jane Smith H102 Katie Smith H102 Jack Smith Obviously I want to do this on a bigger scale. The number of columns is between 1 & 6, so I cant limit it that way. I was able to get a script that allows me to put each individual on one row. However, I am having a hard time getting the first column to copy over to each row. Sub ToOneColumn() Dim i As Long, k As Long, j As Integer Application.ScreenUpdating = False Columns(2).Insert i = 0 k = 1 While Not IsEmpty(Cells(k, 3)) j = 3 While Not IsEmpty(Cells(k, j)) i = i + 1 Cells(i, 1) = Cells(k, 1) //CODE IN QUESTION Cells(i, 2) = Cells(k, j) Cells(k, j).Clear j = j + 1 Wend k = k + 1 Wend Application.ScreenUpdating = True End Sub Like I said, it was working fine to get everyone each on their own row, but can't figure out how to get that first column. It seems like it should be so simple, but it's bugging me. Any help is greatly appreciated.

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• Restricting empty elements in xsd

  - by Chris Welsh

  Is there a way to prevent empty elements of the form <myElement/> being used in your xml? In other words, can you specify in your xsd that <myElement/> is invalid? Using nillable="false" doesn't work, nor does minOccurs="1" - both of those allow <myElement/>.

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• PHP - post data ends when '&' is in data.

  - by Phil Jackson

  Hi all, im posting data using jquery/ajax and PHP at the backend. Problem being, when I input something like 'Jack & Jill went up the hill' im only recieving 'Jack' when it gets to the backend. I have thrown an error at the frontend before that data is sent which alerts 'Jack & Jill went up the hill'. When I put die(print_r($_POST)); at the very top of my index page im only getting [key] => Jack how can I be loosing the data? I thought It may have been my filter; <?php function filter( $data ) { $data = trim( htmlentities( strip_tags( mb_convert_encoding( $data, 'HTML-ENTITIES', "UTF-8") ) ) ); if ( get_magic_quotes_gpc() ) { $data = stripslashes( $data ); } //$data = mysql_real_escape_string( $data ); return $data; } echo "<xmp>" . filter("you & me") . "</xmp>"; ?> but that returns fine in the test above you &amp; me which is in place after I added die(print_r($_POST));. Can anyone think of how and why this is happening? Any help much appreciated. Regards, Phil.

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• Troubleshoot dropped wireless connections

  - by Jack

  I was recently hired in the IT department of a small company (~180 users) and one of the issues that people have been complaining about is having their wi-fi connections drop during meetings. The company is using an HP ProCurve Wireless LAN with 10 APs and a controller unit located in the server room. I don't have any experience troubleshooting WLAN in a multi-AP environment, so I'm trying to at least gather information using free or cheap tools. I did a basic site survey using the free version of Ekahau HeatMapper and discovered the following in one of the conference rooms that has been a problem. The program picked up three access points (plus a bunch of others with much lower signals that were out of range): AP 1: SSID: "Unknown SSID" - Signal strength: -48 dBm - -40 dBm. Channel: 2 AP 2: SSID "CompanyMain" - Signal strength: -35 dBm or greater. Channel: 2. Security: WEP (This is the main SSID for the company's WLAN.) AP 3: SSID: "CompanyGuest" - Signal strength: -40 dBm - -35 dBm. Channel: 2. Security: WPA2 (This SSID is the company's "guest" WLAN, which was setup to allow Internet access, but prevent network access.) Is there anything that you see that is clearly a problem from the above? I'm assuming that the unknown SSID might be a big problem, and that it is an AP from a neighboring office that is causing interference. Does that seem likely? Also, regarding channel, should we try changing the channels of our APs to avoid interference with that unknown SSID? (Since everything seems to be on Channel 2?) Should our APs be on different channels? In other words, should the CompanyMain and CompanyGuest APs be on different channels? Finally, any recommendations for free/cheap tools to help me figure this out, and/or a good methodology to follow? Thanks in advance for any help. Jack

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• Parallels Plesk returning strange numbers

  - by Jack W-H

  Hi everyone, As a relatively new Server Admin I've become a bit confused by some statistics Parallels Plesk Panel 10.0.1 is returning to me. I have a domain ('subscription') set up, mysite.com. Mysite.com only hosts files, mostly images Its file contents use up about 390MB of disk space Here's a screenshot: this is what Plesk is reporting mysite.com to use: And some more info: Now this is pretty confusing... I thought at first my site might have been hacked and had contents written to disk, but I checked and all is in order, nothing has been hacked into as far as I can tell. So I had a look in the site's CP for some more in-depth statistics, and this is what's returned... Now - sod's law - when I go to check my disk space statistics in more depth via the control panel, this morning it says "The data were not collected yet." - not too sure what that means, but, last night when I checked it was reporting something odd. It said Files were using up 390MB, but 1.80GB or so were being used up by 'Mail Accounts'. This is really strange, as there are no mail accounts set up for the domain. The only hint of 'mail' there is, is the catchall set up to forward *@mysite.com to a separate, ISP-hosted email account. Any ideas anybody? I can post more details if you need it. Sorry to be a bit vague but I'm not sure what else I can post. Thanks, Jack

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• Iphone & Web App synch

  - by Jack Welsh

  I am trying to build an Iphone App client for our CRM solution so our sales people would be able to access the information available in our CRM through an Iphone App. I am trying to find out what is the recommended approach to architect the application when it comes to the database. I am not sure where should the data reside, should I save a subset of the data on the iPhone, or should I just rely on webservices and pull the information I need from the database whenever I need it. Also, is there any best practices or frameworks to build such applications on the Iphone.

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• Why Does Private Access Remain Non-Private in .NET Within a Class?

  - by AMissico

  While cleaning some code today written by someone else, I changed the access modifier from Public to Private on a class variable/member/field. I expected a long list of compiler errors that I use to "refactor/rework/review" the code that used this variable. Imagine my surprise when I didn't get any errors. After reviewing, it turns out that another instance of the Class can access the private members of another instance declared within the Class. Totally unexcepted. Is this normal? I been coding in .NET since the beginning and never ran into this issue, nor read about it. I may have stumbled onto it before, but only "vaguely noticed" and move on. Can anyone explain this behavoir to me? Am I doing something wrong? I found this behavior in both C# and VB.NET. The code seems to take advantage of the ability to access private variables. Sincerely, Totally Confused Class Foo Private _int As Integer Private _foo As Foo Private _jack As Jack Private _fred As Fred Public Sub SetPrivate() _foo = New Foo _foo._int = 3 'TOTALLY UNEXPECTED _jack = New Jack '_jack._int = 3 'expected compile error because Foo doesn't know Jack _fred = New Fred '_fred._int = 3 'expected compile error because Fred hides from Foo End Sub Private Class Fred Private _int As Integer End Class End Class Class Jack Private _int As Integer End Class

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• Android Signal analysis + some filters.

  - by Profete162

  Hello, as the world cup is the main sport event and the Vuvuzelas are the most annoying sound in the world, I had an idea to remove them definitively by reading this new ( http://www.popsci.com/diy/article/2010-06/simple-software-can-filter-out-vuvuzela-whine) that told us that the sound has some frequencies at 233Hz + 466,932,1864Hz. I have already made a lot of Android application by myself but never touching the signal analysis and filtering part, so here are a few questions, I do not ask for precise answer but maybe links and tutorial to find something to work on. I guess that a new Android phone has the CPU and power to make real-time filtering. 1) How can I intercept the sound coming from the Jack microphone - Line-IN plug- ( I plan to link my TV to my phone with Jack to Jack plug). My question is totally software and coding, I have all the wires and adapters to plug a jack into my android phone Line IN. 2) Are there some Fourier analysis librairies, may I have a look to Java libraries on the web and import them to my Android project? I really apologize because my question seem not precise, but I think that would be something great. Thank you for your answers.

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• Can't call function from within onOptionsItemSelected

  - by Kristy Welsh

  public boolean onOptionsItemSelected(MenuItem item) { //check selected menu item switch (item.getItemId()) { case R.id.exit: this.finish(); return true; case R.id.basic: Difficulty = DIFFICULTY_BASIC; Toast.makeText(YogaPosesActivity.this, "Difficulty is Basic", Toast.LENGTH_SHORT).show(); SetImageView(myDbHelper); return true; case R.id.advanced: Toast.makeText(YogaPosesActivity.this, "Difficulty is Advanced", Toast.LENGTH_SHORT).show(); Difficulty = DIFFICULTY_ADVANCED; SetImageView(myDbHelper); return true; case R.id.allPoses: Toast.makeText(YogaPosesActivity.this, "All Poses Will Be Displayed", Toast.LENGTH_SHORT).show(); Difficulty = DIFFICULTY_ADVANCED_AND_BASIC; SetImageView(myDbHelper); return true; default: return super.onOptionsItemSelected(item); } } I get an error when I call the SetImageView function, which was defined out of the OnCreate Activity. Can you not call a function unless it was defined inside the OnCreate? I get a nullPointer Exception when calling the function.

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• Make a radio-streaming PC pretend to be a mass-storage USB device

  - by monov

  I'm listening to a net radio on my PC I want the sound to go through my boombox cause it has nice speakers/amp The boombox has no "incoming" audio jack that just plays what comes over the wire However the boombox has a USB jack where you can put a thumbdrive with music. The question: How do I make the PC pretend to be a mass-storage device, and dynamically send all received audiodata to the boombox over a symmetric male USB cable? Failing that, at least tell me how to do it for local files (rather than streams). OS: Vista

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• Front panel audio replacement

  - by develroot

  I have experienced some problems with my headphones and it turned out the front 3.5mm audio jack is defective..and it doesn't make a good contact. I can't replace the jack because it's built-in. I am wondering if there are such things as "modular" Front panels to be inserted into the available external 3.5" bay and, of course, to support (natively, internal connector) Realtek HD Audio. (my case is Asus TA-K5, but I guess it doesn't make any difference)

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• Wrapping a C# service in a console app to debug it.

  - by Jack Smit

  I want to debug a service written in C# and the old fashioned way is just too long. I have to stop the service, start my application that uses the service in debug mode (Visual studio 2008), start the service, attach to the service process and then navigate in my Asp.Net application to trigger the service. I basically have the service running in the background, waiting for a task. The web application will trigger a task to be picked up by the service. What I would like to do is to have a console application that fires the service in an effort for me to debug. Is there any simple demo that anybody knows about? Thank you Jack

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• How will a search engine read data from my Ajax-based webapp?

  - by Jack W-H

  OK, not entirely related to programming, so I'm sorry. But I'd like to know about this: So I've got a webapp. There's one column where a list of results are fetched from the database. When you click one, jQuery fetches the information associated with that result and puts it into the second column - all without a refresh and using Ajax. Is it possible for Google to still read it etc.? I understand it can follow links... but presumably not Javascript actions etc.? If this is the case, what do other Ajax-heavy websites do about search engine optimisation? Jack

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• MySQL problem: How to get desired rows.

  - by Joonas Köppä

  I have been trying to solve this problem for 2 hours now but I cant understand the solutions others have given people with a similar problem. Ive seen some answers but can't apply it to my own needs. I have a table of users and their times in different sports events. I need to make a scoretable that shows the user with the best time, second best etc. The table before sorting and retrieving looks as follows: | Name | Time | Date | '''''''''''''''''''''''''''''''''''''''''''''' | Jack | 03:07:13 | 2010-12-01 | | Peter | 05:03:12 | 2010-12-03 | | Jack | 03:53:19 | 2010-12-04 | | Simon | 03:22:59 | 2010-12-02 | | Simon | 04:01:11 | 2010-12-09 | | Peter | 03:19:17 | 2010-12-06 | '''''''''''''''''''''''''''''''''''''''''''''' | Name | Time | Date | '''''''''''''''''''''''''''''''''''''''''' | Jack | 03:07:13 | 2010-12-01 | | Peter | 03:19:17 | 2010-12-06 | | Simon | 03:22:59 | 2010-12-02 | '''''''''''''''''''''''''''''''''''''''''' I know answers to this problem lie in another question asked on this very site: CLICK HERE I just have no idea how to apply it to fullfill my needs. Help is highly appreciated. Thank you -Joonas

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• Turning HTML character entities to 'regular' letters... why is it only partially working?

  - by Jack W-H

  I'm using all of the below to take a field called 'code' from my database, get rid of all the HTML entities, and print it 'as usual' to the site: <?php $code = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $code); $code = preg_replace('~&#([0-9]+);~e', 'chr("\\1")', $code); $code = html_entity_decode($code); ?> However the exported code still looks like this: progid:DXImageTransform.Microsoft.AlphaImageLoader(src=’img/the_image.png’); See what's going on there? How many other things can I run on the string to turn them into darn regular characters?! Thanks! Jack

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• jQuery: detecting reaching bottom of scroll doesn't work, only detects the top! :(

  - by Jack Webb-Heller

  Hi folks! So basically my problem is a seemingly simple one. You can see it in action at http://furnace.howcode.com (please note that data is returned via Ajax, so if nothing happens give it a few moments!). What's MEANT to happen, is in the second column when you reach the bottom of scrolling, the next 5 results are returned. But what actually happens is it only returns the 5 results when you hit the TOP of the scroll area. Try it: scroll down, nothing happens. Scroll back up to the top, the results are returned. What's going wrong? Here's my code I'm using: $('#col2').scroll(function(){ if ($('#col2').scrollTop() == $('#col2').height() - $('#col2').height()){ loadMore(); } }); loadMore(); is the function that gets the data and appends it. So what's going wrong here? Thanks for your help! Jack

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• iPhone: Using plist to populate a grouped table

  - by Jack Griffiths

  Hi there, I was wanting to use a plist to populate my grouped table. I've had a look at the DrillDownSave sample project, and I'm still none-the-wiser. Although, I did learn that I could store hierarchies and suchlike in there. So here's the questions: How can I use my plist to add new items to my grouped table? I'm currently feeding the table with an array, and I've noticed that an array isn't going to be the best thing for me. When a user taps on an item in the plist, how can I push the view to the corresponding item? In other words, how can I push the view based on the selected row (which was generated by the plist) to it's next "view"? If that makes any sense, please reply. Thanks, Jack.

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• Why use Oracle Application Express for web app?

  - by Jack

  Hi all. I believe we're moving to Oracle Apex for future development. I've read about Oracle Apex on wikipedia and it's pro and con. It seem to me the con outweigh the pro but maybe I'm wrong. I get the sense that Oracle Apex is for DBA with little or no programing knowledge to setup a web app quickly sort like MS Access for none programmer. If you have Oracle Apex working experience, can you share your though? From wikipedia's entry, it doesn't seem like you need to know any programming language at all but just the PL/SQL? edit: Is Oracle Apex scalable? Can it handle traffic like Facebook's size? Thank. Jack

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• Using plist to populate a grouped table

  - by Jack Griffiths

  Hi there, I was wanting to use a plist to populate my grouped table. I've had a look at the DrillDownSave sample project, and I'm still none-the-wiser. Although, I did learn that I could store hierarchies and suchlike in there. So here's the questions: How can I use my plist to add new items to my grouped table? I'm currently feeding the table with an array, and I've noticed that an array isn't going to be the best thing for me. When a user taps on an item in the plist, how can I push the view to the corresponding item? In other words, how can I push the view based on the selected row (which was generated by the plist) to it's next "view"? If that makes any sense, please reply. Thanks, Jack.

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• CodeIgniter's XSS Protection is removing <script> tags from user inputs... but I don't want it to!

  - by Jack W-H

  Hey folks, CodeIgniter is brilliant but I'm using it to develop a site where users need to be able to share their code for websites. Unfortunately, CodeIgniter has been doing the "right" thing by removing <script> tags from my user's inputs into the database, so when it's returned data looks like this: [removed] User's data [removed] However, I need my site to DISPLAY script tags but obviously not PARSE them. How can I get CodeIgniter or PHP to return <script> tags, but still sanitise them for the database and return them without them executing? Thanks! Jack EDIT: By the way, it's not an option to use stuff like Markdown, everything has to output to copy-pastable code that could work with no modification somewhere else

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• Security precautions and techniques for a User-submitted Code Demo Area

  - by Jack W-H

  Hey folks Maybe this isn't really feasible. But basically, I've been developing a snippet-sharing website and I would like it to have a 'live demo area'. For example, you're browsing some snippets and click the Demo button. A new window pops up which executes the web code. I understand there are a gazillion security risks involved in doing this - XSS, tags, nasty malware/drive by downloads, pr0n, etc. etc. etc. The community would be able to flag submissions that are blatantly naughty but obviously some would go undetected (and, in many cases, someone would have to fall victim to discover whatever nasty thing was submitted). So I need to know: What should I do - security wise - to make sure that users can submit code, but that nothing malicious can be run - or executed offsite, etc? For your information my site is powered by PHP using CodeIgniter. Jack

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