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• Wait till all CCActions have completed

  - by tGilani

  I am developing a simple cocos2d game in which I want to animate two CCSprites simultaneously, and for this purpose I simply set CCActions on respective `CCSprite's as follows. [first runAction:[CCMoveTo actionWithDuration:1 position:secondPosition]]; [second runAction:[CCMoveTo actionWithDuration:1 position:firstPosition]]; Now I want to wait till the animations are complete, so I can perform the next step. How should I wait for these animations to finish? There are actually two method calls, the first one animates the objects via the code above and second call does the other animation. I need to delay the second method call until the animations in first are complete. (I would not like to use CCCallFunc blocks as I want to call the second method from the same caller as the first one.

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• Reverse horizontal and vertical for a HTML table

  - by porton

  There is a two-dimensional array describing a HTML table. Each element of the array consists of: the cell content rowspan colspan Every row of this two dimensional array corresponds to <td> cells of a <tr> of the table which my software should generate. I need to "reverse" the array (interchange vertical and horizontal direction). Insofar I considered algorithm based on this idea: make a rectangular matrix of the size of the table and store in every element of this matrix the corresponding index of the element of the above mentioned array. (Note that two elements of the matrix may be identical due rowspan/colspan.) Then I could use this matrix to calculate rowspan/colspan for the inverted table. But this idea seems bad for me. Any other algorithms? Note that I program in PHP.

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• 12.04 Epson Scanner will not install dependency not met

  - by Howard Graham

  I'm trying to install Epson V100 scanner in 12.04. I downloaded files from Epson: iscan_2.29.1-5~usb0.1.ltdl7_amd64.deb iscan_2.29.1-5~usb0.1.ltdl3_amd64.deb iscan-plugin-gt-s600_2.1.2-1_amd64.deb from Ubuntu Software Center via double click on the file or from the terminal "dependencies not met" error occurs. What can I do. Apparently 12.04 is not able to process these files. Does anyone know where I can download older versions of the above files. I can not access avasys.jp from my location in China.

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• Algorithm to optimize grouping

  - by Jeroen

  I would like to know if there's a known algorithm or best practice way to do the following: I have a collection with a subcollection, for example: R1 R2 R3 -- -- -- M M M N N L L A What i need is an algorithm to get the following result: R1, R2: M N L R2: A R3: M This is -not- what i want, it has more repeating values for R than the above: R1, R2, R3: M R1, R2: N L R2: A I need to group in way that i get the most optimized groups of R. The least amount of groups of R the better so i get the largest sub collections. Another example (with the most obvious result): R1 R2 R3 -- -- -- M M A V V B L L C Should result in: R1, R2: M V L R3: A B C I need to do this in LINQ/C#. Any solutions? Tips? Links?

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• SQL SERVER – Puzzle Involving NULL – Resolve – Error – Operand data type void type is invalid for sum operator

  - by pinaldave

  Today is Monday let us start this week with interesting puzzle. Yesterday I had also posted quick question here: SQL SERVER – T-SQL Scripts to Find Maximum between Two Numbers Run following code: SELECT SUM(data) FROM (SELECT NULL AS DATA) t It will throw following error. Msg 8117, Level 16, State 1, Line 1 Operand data type void type is invalid for sum operator. I can easily fix if I use ISNULL Function as displayed following. SELECT SUM(data) FROM (SELECT ISNULL(NULL,0) AS DATA) t Above script will not throw an error. However, there is one more method how this can be fixed. Can you come up with another method which will not generate error? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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• Keeping up with LibreOffice

  - by user1768076

  Installing LibreOffice manually on Ubuntu 12.04 works great following the advice in this answer: http://askubuntu.com/a/182602/103893 It basically is a matter of downloading the most recent release from the LibreOffice site and running sudo apt-get remove libreoffice-core and sudo dpkg -i *.deb. Doing the above I installed LibreOffice 3.6.3 and it works great. But what is the best way to uninstall this new version of LibreOffice (for when the next release is coming along)? Trying sudo apt-get remove libreoffice-core will not do anything, and sudo apt-get remove libreoffice3.6 does not seem to remove all packages installed with dpkg...?

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• HTTPS Everywhere Extension Updates to Version 3.0, Adds Protection for 1,500 More Websites

  - by Asian Angel

  If one of your security goals is to encrypt your communication with websites as much as possible, then you will definitely be pleased with the latest update to the HTTPS Everywhere extension for Firefox and Chrome. This latest release adds encryption protection for an additional 1,500 websites to help make your browsing experience more secure than ever. Images shown above courtesy of EFF. You can learn more about this latest release along with installing the extension for Firefox and/or Chrome directly from the blog post linked below… HTTPS Everywhere 3.0 protects 1,500 more sites [via Softpedia] HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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• Web Developer interview questions

  - by Baba

  I read an article today that listed some basic questions about web development: Describe how POST data was submitted to a server by a browser. Explain a number of HTTP status codes (except maybe 404 and 500). Explain SOLID or name a design pattern. Explain ways to improve a page load speed or user experience. The author says "if you can’t answer the questions above there are a lot of people who wouldn’t think of you as a Senior Web Developer." My questions are: How relevant are these questions in respect to real life web programming and scalability? How true is that statement? In other words, do you consider this knowledge a requirement to be considered a Senior Web Developer? I was able to answer all the questions, too easily it seemed, so I'm wondering whether it is effective to use these or similar questions to screen developers rather than asking them to write sample code.

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• Oracle Database 12c

  - by jgelhaus

  What's your pain? Cost of IT and downtime, Complexity of IT, Poor database application performance? All of the above and more? These are real challenges caused by today's demands on data centers and their IT teams.  Oracle Database 12c provides a breakthrough architecture that makes it easy to deploy and manage databases in the cloud. Oracle partners will leverage Database 12c innovation to provide additional options for Oracle customer success and ROI. Download Oracle Database 12c and plug into the cloud! Join us for our July 10th webcast to learn about this database breakthrough.

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• Engineering Change Orders

  - by Amit Katariya

  Upcoming E1 Manufacturing webcasts   Date: April 20, 2010Time: 1 pm MDTProduct Family: JD Edwards EnterpriseOne Manufacturing   Summary This one-hour session is recommended for technical and functional users who would like to understand the Engineering Change Order process, how this process automates Bill of Material updates, and how changes are tracked.   Topics will include: EnterpriseOne Engineering Change Order Processing ECO statuses and how the system uses them to notify interested parties and drive the approval process ECO parent and component change types Parent/Child Relationships Sample ECO process flow   A short, live demonstration (only if applicable) and question and answer period will be included. Register for this session Oracle Advisor is dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Important links related to Webcasts Advisor Webcast Current Schedule Advisor Webcast Archived Recordings Above links requires valid access to My Oracle Support

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• Announcing the Mastering SharePoint 2013 Development lab

  - by Erwin van Hunen

  If you’re a seasoned SharePoint developer and you’d like to get up and running with all the new goodies that SharePoint 2013 is bringing, make sure you check out the Mastering SharePoint 2013 Development lab I’m giving at LabCenter in Stockholm, Sweden. 3 days of development heaven *and* you take away a brand new laptop, or an iPad, or some of the other perks you decide to go for. Check out: http://www.labcenter.se/Labs#lab=Mastering_Sharepoint_2013_Development The overview of the 3 days: Day 1 Module 1: Comparing SharePoint 2013 to SharePoint 2010 What’s new in SharePoint 2013 Module 2: Installing your SharePoint 2013 development environment How to successfully (and above all correctly) install SharePoint 2013 Day 2 Module 3: Apps, sandboxed or full trust? What’s the difference between the deployment models. Pro’s and con’s Code or no-code solutions? Module 4: Search is the new black Using the new out of the box Search webparts Building a search based solution Day 3 Module 5: Workflows Differences between SharePoint 2010 workflows and 2013 workflows Building a workflow using Visio and SharePoint Designer Building a workflow using Visual Studio Module 6: You’re the master of the design The design manager Master pages Page layouts CSS and HTML5

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• Will an Atheros AR928X work with WPA2?

  - by Tommy

  Basically I need only the answer to above question. Please think of that I am new to linux. For further explanation here is the full story: I have the following problem. My friends notebook (Vista) has got a trojan and refuses to work anymore. The Avira Rescue CD did not help either. So I tried an old (9.1) Ubuntu CD and backed up all the essential files. Since we have no Windows Install Disk we want to put Ubuntu on that notebook. But with the 9.1 version there is no WLAN. Systemtest tells me, that it finds an Atheros AR928X, but ifconfig does not show that and the network manager tells me there are no LAN/WLAN devices. So: does that work easier with the new Ubuntu version or is that network adapter a known troublemaker? And: if I get the adapter to work, will it work with the WPA2-network around here?

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• SQL SERVER – Finding Latch Statistics

  - by pinaldave

  Last month I wrote SQL Server Wait Types and Queues series SQL SERVER – Summary of Month – Wait Type – Day 28 of 28. I had great fun to write the series. I learned a lot and I felt this has created some deep interest on the subject with others. I recently received very interesting question from one of the reader after reading SQL SERVER – PAGELATCH_DT, PAGELATCH_EX, PAGELATCH_KP, PAGELATCH_SH, PAGELATCH_UP – Wait Type – Day 12 of 28 that if they can know what kind of latches are waiting and what is their count. Absolutely! SQL Server team has already provided DMV which does the same. -- Latch SELECT * FROM sys.dm_os_latch_stats ORDER BY wait_time_ms DESC Above script will return you details about how many latches were waiting for how long. After going over this script I feel like going deep into the subject further. I will post a blog post on the subject soon. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Question about Target parameter of Matrix.CreateLookAt

  - by manning18

  I have a newbie question that's causing me a little bit of confusion when experimenting with cameras and reading other peoples implementations - does this parameter represent a point or a vector? In some examples I've seen people treat it like a specific point they are looking at (eg a position in the world), other times I see people caching the orientation of the camera in a rotation matrix and simply using the Matrix.Forward property as the "target", and other times it's a vector that's the result of targetPos - camPos and also I saw a camPos + orientation.Forward I was also just playing around with hard-coded target positions with same direction eg 1 to 10000 with no discernible difference in what I saw in the scene. Is the "Target" parameter actually a position or a direction (irrespective of magnitude)? Are there any subtle differences in behaviors, common mistakes or gotchas that are associated with what values you provide, or HOW you provide this paramter? Are all the methods I mentioned above equivalent? (sorry, I've only recently started and my math is still catching up)

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• Setup & Usage of Document Sequencing in Oracle Receivables

  - by Robert Story

  Upcoming WebcastTitle: Setup & Usage of Document Sequencing in Oracle ReceivablesDate: May 20, 2010 Time: 11:00 am EDT Product Family: Receivables Community Summary Understanding Document Sequencing and how it can be used to generate document numbers in Oracle Receivables. This one-hour session is recommended for both technical and functional users. Topics will include: Review of important tablesRequired setup stepsUse of Oracle Diagnostics to review critical setupsHow to create gapless sequencesCommon Errors Troubleshooting Tips A short, live demonstration (only if applicable) and question and answer period will be included. Click here to register for this session....... ....... ....... ....... ....... ....... .......The above webcast is a service of the E-Business Suite Communities in My Oracle Support.For more information on other webcasts, please reference the Oracle Advisor Webcast Schedule.Click here to visit the E-Business Communities in My Oracle Support Note that all links require access to My Oracle Support.

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• 301 url rewrite loop

  - by anyvendetta

  I need to do a 301 rewrite to force all urls to become lowercase i put in htaccess (RewriteMap lc int:tolower in httpd.conf) RewriteCond %{REQUEST_URI} [A-Z] RewriteRule . ${lc:{REQUEST_URI}} [R=301,L] Everything works just fine except to urls with subcategories which in this case are: /category-1256-Product-page-example.html the numer 1256 refers to a "subcategory" So when i try to access /category-1256-Product-page-example.html gives me a loop error message I think another redirect rules are making the loop but dunno how to fix it because are just this urls rewrite rules that don't work with the above rewrite. Rewriterule ^main-site-url/category-([0-9]*)-([-_a-zA-Z0-9]*)\.html$ /subcategories.php?idcategory_main=1&idcategory=$1&category=$2 [L] Rewriterule ^main-site-url/([0-9]*)-([-_a-zA-Z0-9]*)-([0-9]*)\.html$ /file.php?idcategory_main=1&idsubcategory=$1&product=$2&idproduct=$3 [L]

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• Most efficient way to rebuild a tree structure from data

  - by Ahsan

  Have a question on recursively populating JsTree using the .NET wrapper available via NuGet. Any help would be greatly appreciated. the .NET class JsTree3Node has a property named Children which holds a list of JsTree3Nodes, and the pre-existing table which contains the node structure looks like this NodeId ParentNodeId Data AbsolutePath 1 NULL News /News 2 1 Financial /News/Financial 3 2 StockMarket /News/Financial/StockMarket I have a EF data context from the the database, so my code currently looks like this. var parentNode = new JsTree3Node(Guid.NewGuid().ToString()); foreach(var nodeItem in context.Nodes) { parentNode.Children.Add(nodeItem.Data); // What is the most efficient logic to do this recursively? } as the inline comment says in the above code, what would be the most efficient way to load the JStree data on to the parentNode object. I can change the existing node table to suite the logic so feel free to suggest any changes to improve performance.

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• Installing on a Lenovo S10-3

  - by Søren Hauberg

  I'm trying to install Ubuntu 10.10 netbook edition on my Lenovo S10-3. According to the release notes, there is a bug in the kernel that forces me to add intel_idle.max_cstate=0 to the kernel parameters. I did this when booting the install CD and I was able to install Ubuntu. During the installation I chose to fetch updates from the net. Now when I try to boot the machine it just hangs. I have tried booting the machine as-is and I have tried adding the above-mentioned kernel parameters. Same experience. So, my questions is how do I install 10.10 in this machine and how do I boot it after I've installed the OS?

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• How to incorporate existing open source software from a licensing perspective?

  - by Matt

  I'm working on software that uses the following libraries: Biopython SciPy NumPy All of the above have licenses similar to MIT or BSD. Three scenarios: First, if I don't redistribute those dependencies, and only my code, then all I need is my own copyright and license (planing on using the MIT License) for my code. Correct? What if I use py2exe or py2app to create a binary executable to distribute so as to make it easy for people to run the application without needing to install python and all the dependencies. Of course this also means that my binary file(s) contains python itself (along with any other packages I might have performed a pip install xyz). What if I bundle Biopython, SciPy, and NumPy binaries in my package? In the latter two cases, what do I need to do to comply with copyright laws.

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• Abstract class + Inheritance vs Interface

  - by RealityDysfunction

  Hello fellow programmers, I am reading a book on C# and the author is comparing Abstract classes and Interfaces. He claims that if you have the following "abstract class:" abstract class CloneableType { public abstract object Clone(); } Then you cannot do this: public class MiniVan : Car, CloneableType {} This, I understand. However he claims that because of this inability to do multiple inheritance that you should use an interface for CloneableType, like so: public interface ICloneable { object Clone(); } My question is, isn't this somewhat misleading, because you can create an abstract class which is "above" class Car with the method Clone, then have Car inherit that class and then Minivan will inherit Car with all these methods, CloneAble class - Car class - Minivan Class. What do you think? Thanks.

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• A specific user is unable to log in to vsftpd

  - by HackToHell

  I am setting up a new user let his name be ftpguy. He has access to only one directory /var/www/xxx. I have already chowned the directory so that he has write and read privileges. The user is also unable to login via ssh as I have disabled that by changing his shell to /sbin/nologin. Also, in vsftpd config, I have enabled the chroot_local_user. Now whenever I log in from ftp, i get an auth error. Connect socket #1008 to xxxxxxxx, port 21... 220 Welcome to blah FTP service. USER ftpguy 331 Please specify the password. PASS **** 530 Login incorrect. I changed the password to something different several times, using the passwd command, nothing happens, i still the above error. However I am able to log in with my ssh creditals to my ftp server without any problems.(I do not use a key).

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• Star Trail Photos Taken from the International Space Station

  - by Jason Fitzpatrick

  While most people have seen a star trail photo or two, seeing a set of star trail photos taken from over 300 miles above the Earth’s surface is a treat. Courtesy of Astronaut and Expedition 31 Flight Engineer Don Pettit, the photos capture star trails from the vantage point of the International Space Station. He explains his technique: My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure. Hit up the link below for the full Flickr set of the star trails. ISS Star Trails [via Smithsonian Magazine] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• Script to set NO_HEARTBEAT Flag

  - by Koppar

  The new plugin provides some flags to help debug the browser side VM. Below are the flags: JPI_PLUGIN2_DEBUG=1JPI_PLUGIN2_VERBOSE=1 The above 2 provide tracing information JPI_PLUGIN2_NO_HEARTBEAT = 1 This disables sending of  heartbeat messages between browser side VM and the client JVM instance(s). This lets the client JVM stay independent of browser side VM. These are to be set as system environment variables. Many a times we are required to set them using scripts. Here is a small script to achieve the same: -----------set_jpi_flags.vbs------------------------------------------ Set WSHShell = WScript.CreateObject("WScript.Shell")Set WshEnv = WshShell.Environment("USER")WshEnv("JPI_PLUGIN2_NO_HEARTBEAT") = "1"WshEnv("JPI_PLUGIN2_DEBUG") = "1"WshEnv("JPI_PLUGIN2_VERBOSE") = "1"WScript.Echo WshEnv("JPI_PLUGIN2_NO_HEARTBEAT")   ---- displays the value of the NO_HEARTBEAT var ---------------------------------------------------------------------------

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• Computer-controlled Lights and Music Synced into Christmas Rock Spectacular

  - by Jason Fitzpatrick

  This spectacular computer controlled and synchronized lighting display combines thousands of feet of LED lighting, multiple controllers, and a rock medley to great effect. The above display started life as the personal Christmas light display of Sioux Falls, ND resident Joe Noe. When Noe moved, he donated his display to a local mall in order to preserve the tradition of people stopping by to see it and making donations to the Make-A-Wish foundation. The local mall, Western Mall, expanded the display and added in even more LEDs and controllers. The end result is an impressive display synced to a Christmas rock medley by UK musician Richard Campbell. [via Mashable] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Stop bots from crawling old links with extensions

  - by Jared

  I've recently switched to MVC3 which is extension-less for the URL's, but Google and Bing have a wealth of links that they are crawling which no longer exist. So I'm trying to find out if there is a way to format robots.txt (or by some other method) to tell google/bing that any link that ends in an extension isn't a valid link... Is this possible? On pages that I'm concerned about a User having saved as a fav I'm displaying a 404 page that lists the links to take once they are redirected to the new page (I decided to not just redirect them as I don't want to maintain these forever). For Google/Bing sake I do have the canonical tag in the header. User-agent: * Allow: / Disallow: /*.* EDIT: I just added the 3rd line (in text above) and it APPEARS to do what I'm wanting. Allow a path, but disallow a file. Can anyone confirm this?

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