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Articles indexed Thursday December 23 2010

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• What's the story with ubuntu?

  - by A-ha

  Guys, I've tried to install ubuntu 10.10 desktop ed. on my laptop and unfortunately it didn't detect my keyboard (it detects my mouse) so I couldn't finish installation. Is it something wrong I'm doing? There isn't really much to specify during the installation process and I'm really dissapointed that such trivial task as installation cannot be done without asking a question on a forum. Or maybe just because I'm trying to install it on my laptop I shall download notebook edition? But that sound silly to me.

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• VirtualBox 4.0 Rocks Extensions and a Simplified GUI

  - by Jason Fitzpatrick

  If you’re a fan of VirtualBox you’ll definitely want to grab the new 4.0 update; it comes packed with an extension manager, a fresh and user-friendly GUI, live virtual machine previews, and more. Check out our screenshot tour for a closer look. Latest Features How-To Geek ETC How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Is Your Desktop Printer More Expensive Than Printing Services? 20 OS X Keyboard Shortcuts You Might Not Know HTG Explains: Which Linux File System Should You Choose? HTG Explains: Why Does Photo Paper Improve Print Quality? Sunset in a Tropical Paradise Wallpaper Natural Wood Grain Icons for Your Desktop and App Launcher Docks My Blackberry Is Not Working! The Apple Too?! [Funny Video] Hidden Tracks Your Stolen Mac; Free Until End of January Why the Other Checkout Line Always Moves Faster World of Warcraft Theme for Windows 7

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• Pourquoi tant de panique en cas de panne des services en ligne ? Et vous, comment réagissez-vous sans Gmail ou Facebook ?

  Pourquoi les gens ont-ils tant tendance à paniquer en cas de panne des services en ligne ? Et vous, comment réagissez-vous sans Gmail ou Facebook ? Hier, Twitter et Skype ont connu une grosse panne. Simultanée. Et, déjà, certains ont commencé à paniquer. Tout comme lorsque, la semaine dernière, Facebook a rencontré quelques 30 minutes d'indisponibilité générale. Que se passerait-il alors, si tous ces services web tombaient en panne en même temps, le même jour, à la même heure ? Plus de Twitter, ni de Skype, ni de Facebook, ni de Tumblr ou de Gmail ou de MSN. Horreur. En cas d'indisponibilité, les utilisateurs ont tendance à migrer en masse vers un autre moyen de communication. Mais que faire si aucun n...

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• La publicité mobile en click-to-call peut générer un retour sur investissement de 800%, explique Google

  La publicité mobile en click-to-call peut générer un retour sur investissement de 800%, explique Google Il y a quelques semaines, Google révélait ses excellents résultats financiers liés à ses activités mobiles, et notamment publicitaires. D'autres statistiques viennent dorer ce blason, surtout dans le domaine des publicités appelée "click-to-call". En effet, quand on surf depuis un smartphone, on peut rencontrer des publicités ou des sites invitant à cliquer sur un lien ou une bannière pour être rappelé. Le but étant de proposer un contact téléphonique rapide, si ce n'est immédiat, pour répondre à toutes les questions ou demandes de l'internaute. Une mise en relation simple, qui ne demande en général qu'un...

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• Kinect pourrait bientôt être compatible avec les ordinateurs tournant sous Windows, d'après un développeur de jeux coréen

  Kinect pourrait bientôt être compatible avec les ordinateurs tournant sous Windows, d'après un développeur coréen Mise à jour du 23.12.2010 par Katleen Alors que Kinect fait l'objet de nombreux détournements et est en train de devenir le joujou préféré des hackers, un développeur coréen spécialisé dans les jeux vidéos a déclaré que la technologie de Microsoft pourrait très bientôt fonctionner avec les ordinateurs équipés de Windows. Microsoft n'a pas encore officialisé la nouvelle, elle est donc à prendre avec des pincettes. Mais l'éditeur GamePrix, qui vient de sortir le RPG multi-joueurs Divine Souls sur PC, a déclaré que le jeu "supportera Kinect". Et, d'après la compagnie...

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• Update table with if statement PS/SQL

  - by Matt

  I am trying to do something like this but am having trouble putting it into oracle coding. BEGIN IF ((SELECT complete_date FROM task_table WHERE task_id = 1) IS NULL) THEN UPDATE task_table SET complete_date = //somedate WHERE task_id = 1; ELSE UPDATE task_table SET complete_date = NULL; END IF; END; But this does not work i also tried IF EXISTS(SELECT complete_date FROM task_table WHERE task_id = 1) with no luck

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• Calendar using Javascript/ PHP/ mySQL

  - by Gushiken

  for a current webapp i need a "outlook-like" calendar... Here are some requirements for the calendar: week-view for the appointments different appointment types direct display of the length and time of the date (like in googleCalendar) multiple appointments for the same time only using javascript, php and any DB We need the calendar for the Zend Framework, so if the Calendar doesn't already support the ZF, the source needs to be editable! do you know any calendar which fits my needs? or do you have any tipps for developing one by myself?

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• How am I able to create A List<T> containing a generic Interface?

  - by Conrad Clark

  I have a List which must contain IInteract Objects. But IInteract is a generic interface which requires 2 type arguments. My main idea is iterate through a list of Objects and "Interact" one with another if they didn't interact yet. So i have this object List<IObject> WorldObjects = new List<IObject>(); and this one: private List<IInteract> = new List<IInteract>(); Except I can't compile the last line because IInteract requires 2 type arguments. But I don't know what the arguments are until I add them. I could add interactions between Objects of Type A and A... or Objects of Type B and C. I want to create "Interaction" classes which do something with the "acting" object and the "target" object, but I want them to be independent from the objects... so I could add an Interaction between for instance... "SuperUltraClass" and... an "integer". Am I using the wrong approach?

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• Unit Testing - not testable code converted to testable code

  - by imak

  I have read so many places is that if your code is not test-able that mean code is not well written. So that makes me start writing a code that is test-able and to start using some unit testing framework. With this though I start looking for some example with piece of code that is not testable and gradually converted to a testable code. I find tons of examples on unit testing but if someone can provide an example like above it probably can jump start things for me. TIA

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• is @font-face server dependant

  - by samquo

  Not sure if this has something to do the live host I'm working with, but I'm using @font-face in the following format, @font-face { font-family: 'UbuntuTitle'; src: url('Ubuntu-Title-webfont.eot'); src: local('?'), url('Ubuntu-Title-webfont.woff') format('woff'), url('Ubuntu-Title-webfont.ttf') format('truetype'), url('Ubuntu-Title-webfont.svg') format('svg'); font-weight: normal; font-style: normal; } I'm finding though that I can't save the document because of the strange character in () in local local('?') so I save it as UTF-8, but that changes the character to this local('☺'). Could that be the reason why it's not being picked up on the server? Any other possibilities?

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• jquery autocomplete: works for first value, how to enable it for next?

  - by Toni Michel Caubet

  hello there! I'm using autocomplete so user can easly enter data on inputs, like this: <? $a = new etiqueta(0, ''); $b = $a->autocomplete_etiquetas(); ?> <script type="text/javascript"> function cargar_autocomplete_etiquetas(){ $("#tags").autocomplete({ source: [<? echo $b; ?>] }); } </script> $a = $b its an array with a result like: 'help','please',i','need','to,'be able to', 'select next item',' with autocomplete'; and i checked the ui documentation, but it doesn't fith with my source method.. any idea? I'm trying like this (edited with Bugai13 aportation): <? $a = new etiqueta(0, ''); $b = $a->autocomplete_etiquetas(); ?> <script type="text/javascript"> function cargar_autocomplete_etiquetas(){ $("#tags").autocomplete({ source: [<? echo $b; ?>], multiple: true, multipleSeparator: ", ", matchContains: true }); } </script> but i don't know how to do it.. any idea? are .push and .pop functions from the autocomplete? or shall i define, them? thanks again! PS: i'm getting adicted to this site! PS: come on dudes, i think the answer will be very usefull for many people PS: is it allowed to offer paypal reward?

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• Packing differently sized chunks of data into multiple bins

  - by knizz

  EDIT: It seems like this problem is called "Cutting stock problem" I need an algorithm that gives me the (space-)optimal arrangement of chunks in bins. One way would be put the bigger chunks in first. But see how that algorithm fails in this example: Chunks Bins ----------------------------- AAA BBB CC DD ( ) ( ) Algorithm Result ----------------------------- biggest first (AAABBB ) (CC ) optimal (AAACCDD) (BBB) "Biggest first" can't fit in DD. Maybe it helps to build a table like this: Size 1: --- Size 2: CC, DD Size 3: AAA, BBB Size 4: CCDD Size 5: AAACC, AAADD, BBBCC, BBBDD Size 6: AAABBB Size 7: AAACCDD, BBBCCDD Size 8: AAABBBCC, AAABBBDD Size 10: AAABBBCCDD

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• optimize query: get al votes from user's item

  - by Toni Michel Caubet

  hi there! i did it my way because i'm very bad getting results from two tables... Basically, first i get all the id items that correspond to the user, and then i calculate the ratings of each item. But, there is two different types of object item, so i do this 2 times: show you: function votos_usuario($id){ $previa = "SELECT id FROM preguntas WHERE id_usuario = '$id'"; $r_previo = mysql_query($previa); $ids_p = '0, '; while($items_previos = mysql_fetch_array($r_previo)){ $ids_p .= $items_previos['id'].", "; //echo "ids pregunta usuario: ".$items_previos['id']."<br>"; } $ids = substr($ids_p,0,-2); //echo $ids; $consulta = "SELECT valor FROM votos_pregunta WHERE id_pregunta IN ( $ids )"; //echo $consulta; $resultado = mysql_query($consulta); $votos_preguntas = 0; while($voto = mysql_fetch_array($resultado)){ $votos_preguntas = $votos_preguntas + $voto['valor']; } $previa_r = "SELECT id FROM recetas WHERE id_usuario = '$id'"; $r_previo_r = mysql_query($previa_r); $ids_r = '0, '; while($items_previos_r = mysql_fetch_array($r_previo_r)){ $ids_r .= $items_previos_r['id'].", "; //echo "ids pregunta usuario: ".$items_previos['id']."<br>"; } $ids = substr($ids_r,0,-2); $consulta_b = "SELECT valor FROM votos_receta WHERE id_receta IN ( $ids )"; //echo $consulta; $resultado_b = mysql_query($consulta_b); $votos_recetas = 0; while($voto_r = mysql_fetch_array($resultado_b)){ $votos_recetas = $votos_recetas + $voto_r['valor']; } $total = $votos_preguntas + $votos_recetas; return $total; } As you can si this is two much.. O(n^2) Feel like thinking? thanks!

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• How do I display new products AUTOMATICALLY on the Magento home-page?

  - by Atriya

  I need to display 3 or so new products automatically on the Magento home-page. This means the administrator should NOT have to mark the product as new using the 'New from Date' and 'New to Date' attributes in the 'General' tab. I know how to create a separate category containing new products automatically (http://www.tridian.com/developer-blog/adding-new-arrivals-to-magento/), but how do I display them on the home page?

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• Programming a loopback-device consisting of several files in Linux

  - by dubbaluga

  Hej, it is relatively easy to use a file for emulating a block-device using losetup in Linux: http://www.walkernews.net/2007/07/01/create-linux-loopback-file-system-on-disk-file/ Can anyone please give me a hint on what to look for in case I want to program my own block-device which is based on several files I'm taking content from? For your understanding, I would like to let's say take bytes 1-500 and 1.000-3.000 from file1 and bytes 501-999 and bytes 3.001 to 5.000 from file2 to offer them as a combined block-device. My prefered programming language is Python and I want to write my program in user-space as much as possible. For Windows I found such an implementation. It's called FileDisk and HttpDisk and it can be found here: http://www.acc.umu.se/~bosse/ Thanks in advance and regards, Rainer

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• How to delay the Setter to be in affect for 0.5 sec in DataTrigger ?

  - by vladc77

  I am wondering if it possible to delay a datatrigger to change layout for 0.5 a second. Is any easy way to do it? I need to set the visibility of the object but wait for 0.5 a second. Any adeas are highly appreciated. <DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType={x:Type ListBox}}, Path=SelectedItem.Attributes[retract].Value}" Value="True"> <Setter TargetName="ListboxIemtextBlock" Property="Visibility" Value="Hidden" /> </DataTrigger>

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• Why does Ordered[A] use a compare method instead of reusing compareTo?

  - by soc

  trait Ordered[A] extends java.lang.Comparable[A] { def compare(that: A): Int def < (that: A): Boolean = (this compare that) < 0 def > (that: A): Boolean = (this compare that) > 0 def <= (that: A): Boolean = (this compare that) <= 0 def >= (that: A): Boolean = (this compare that) >= 0 def compareTo(that: A): Int = compare(that) } Isn't it a bit useless to have both compare and compareTo? What is the huge benefit I'm missing here? If they had just used compareTo I could just had replaced Comparable with Ordered in my code and be done.

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• Deleting sender from Outlook Safe Senders using GPO?

  - by Hutch

  We're having an external company do a mailshot to our users. The message contains images that are linked rather than embedded in the image (bandwidth isn't an issue). So of course on recent versions of Outlook you're prompted to download the images, not the end of the world, but it would be nice if that didn't happen. There's a bug in the Office/Outlook ADM/ADMX templates that means that a custom list of Safe Senders won't import unless you follow this: http://support.microsoft.com/kb/2252421 Thing is, if I remove an entry from the Safe Senders file, it doesn't seem to remove it from Outlook, which seems odd?

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• What's an easy way to shut down a computer that I'm connected to via RDP

  - by MBraedley

  I have a secondary machine on my local network that I usually use via RDP. Most of the time, it's on 24/7, but there are times when I may want to shut it down from the RDP client machine. The shutdown and restart options aren't available from the Windows XP start menu when you connect to a machine via RDP, so how can I shut this machine off without actually going to the physical machine? Also note that this computer currently doesn't have a monitor attached to it, which is partly why I want to be able to shut it down over RDP.

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• pymatplotlib without xserver

  - by vigilant

  Is it possible to use networkx or pymatplotlib without an xserver running? I keep getting the following error with their first example (of networkx): Traceback (most recent call last): File "test.py", line 17, in <module> nx.draw(G,pos,node_color='#A0CBE2',edge_color=colors,width=4,edge_cmap=plt.cm.Blues,with_labels=False) File "/usr/local/lib/python2.6/dist-packages/networkx-1.3-py2.6.egg/networkx/drawing/nx_pylab.py", line 124, in draw cf=pylab.gcf() File "/usr/lib/pymodules/python2.6/matplotlib/pyplot.py", line 276, in gcf return figure() File "/usr/lib/pymodules/python2.6/matplotlib/pyplot.py", line 254, in figure **kwargs) File "/usr/lib/pymodules/python2.6/matplotlib/backends/backend_tkagg.py", line 90, in new_figure_manager window = Tk.Tk() File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1646, in __init__ self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use) _tkinter.TclError: couldn't connect to display ""

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• windows 7 (windows-system32-systemproperties.exe n) need programme elevation message

  - by mohammedjas

  hi, i have the issue with windows 7 32-bit professional, since this is a network computer, when i download or install something it was asking for admin password , i gave password, then its shows programme need elevation , after i gone to my computer-properties-advanced tap - again the same message displays as windows-system32-systempropertiesadvanced.exe need programme elevation .this same message showing in all eg: if i click to install something wind/sys32/isyspropertiesins.exe progrmme need elevation , also i was not able to add or change somthing in the computermanagement, user or group , says some error , even i logged in admin also,, please help me out with good soluton ..i am looking forward reply , as soon as possible. regards, mohmmed

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• 13-inch Macbook Pro Battery Not Charging

  - by hkhalidz

  I have a 13 inch Macbook Pro. From last night on, it says 'Battery Not Charging'. The charger's light is always green and if I remove the charger it turns off(means the battery is completely empty). I tried reseting the PRAM and SMC, but not dice. I also tried using different chargers with out any success. The Macbook Pro is from the new generations and is over a year old. The Power Information section indicates 458 for the Power Cycles. Any help would be greatly appreciated.

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• Transfer of ownership of Windows 7

  - by ziggy

  I am thinking of purchasing a copy of Windows 7 via either ebay or GumTree. I am unsure as to how the product key works. A close friend of mine is warning me against buying it from ebay as he is suggesting that once it has been used, the operating system registers itself on microsoft servers using the serial number of the motherboard of the system where it has been installed. This means once installed on one machine you wont be able to install it on another machine. Now i am struggling to believe that an operating system can only be installed on one machine. Can someone please explain exactly how this works. I can see a lot of copies being sold on Ebay which are used. I used the 'Ask a question' option and the majority of the users are saying that i should be able to use it. If someone buys Windows 7 from the shop, installs it on his PC but then decides that he wants to sell it can he not sell it? Will the person buying it not be able to use it? Does the person selling it have to somehow unregister it first? What do i need to look out for if buying it from Ebay? Thanks

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• Connect iPad to windows 7 VPN

  - by Linuz

  My iPad keeps spitting out the error: "A connection could not be established to the PPP server." I am trying to connect it to a VPN I set up with Windows 7 as an incoming connection. On the iPad, I went into the VPN settings, added a new PPTP VPN with the following information Server: Windows 7 Computer's IP RSA SecurID: OFF Account: Account Username Password: Account Password Encryption Level: Auto Send All Traffic: ON Proxy: Off Now I know that it is making some connection to the Windows 7 Computer because whenever I intentionally put in the wrong VPN password on the iPad, it makes me put in the correct one before trying to connect again. All the ports are forwarded on my router for PPTP, and my Windows 7 Firewall is even off to try to get this to work. Any help would be greatly appreciated, thanks.

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• MediaContextNotificatioNWindow Error Occurs When Trying to Shutdown Windows XP

  - by Psycho Bob

  I am working with a Windows XP laptop that whenever it is shutdown will display a warning that the "MediaContextNotificationWindow" is attempting to close, eventually requiring you to force it to close. It does not appear to matter if the laptop is on or off the network, it will still display the message. I have done a little research into the MediaContextNotificationWindow, and it seems like it is either a part of the Windows Media Player or .Net 3.5, though I'm not entirely sure. Has anyone come across this error and know how to resolve it?

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