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• Passing functions into other functions as parameters, bad practice?

  - by BlueHat

  We've been in the process of changing how our AS3 application talks to our back end and we're in the process of implementing a REST system to replace our old one. Sadly the developer who started the work is now on long term sick leave and it's been handed over to me. I've been working with it for the past week or so now and I understand the system, but there's one thing that's been worrying me. There seems to be a lot of passing of functions into functions. For example our class that makes the call to our servers takes in a function that it will then call and pass an object to when the process is complete and errors have been handled etc. It's giving me that "bad feeling" where I feel like it's horrible practice and I can think of some reasons why but I want some confirmation before I propose a re-work to system. I was wondering if anyone had any experience with this possible problem?

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• Corona sdk events dispatched with dispatchEvent() are handled directly upon call. Why so?

  - by Amoxus

  I noticed to my surprise that an event created with dispatchEvent(event) gets handled directly when called, and not together with other events at a specific phase of the frame loop. Two main reasons of having an event system are: so that you can call code B from code A, but still want to prioritize code A. to make sure there are no freaky loopedy loops where code A calls code B calls code A ... I wonder what Ansca's rationale behind having events being handled directly this way is. And does Corona handle loopedy loops and other such pitfalls gracefully? The following code demonstrates dispatchEvent(): T= {} Z = display.newRect(100,100,100,100) function T.doSomething() print("T.doSomething: begun") local event = { name="myEventType", target=T } Z:dispatchEvent( event ) print("T.doSomething: ended") end function Z.sayHello(event) print("Z.sayHello: begun and ended") end Z:addEventListener("myEventType", Z.sayHello) print("Main: begun") T.doSomething() print("Main: ended") However Ansca claims the contrary at http://developer.coronalabs.com/reference/index/objectdispatchevent Can anyone clear this up a little? ( Using Corona simulator V 2012.840 )

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• Updating "Inactive" Chunks

  - by Conner Bryan

  In my game, the only chunks (4x4 areas of tiles) in memory are the ones that the player is in. However, chunks need to have updates applied to them over time. A (likely) well-known example would be MineCraft: even if the player isn't in a chunk, the wheat still needs to grow over time. My current solution is to call a method and pass in the time since the chunk was active.. but what if the chunk depends on nearby chunks for information, i.e. vines spreading or similar? Is there any reasonable solutions to this problem, or should I simply not depend on nearby chunks?

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• How to handle jumping up a slope in a runner game?

  - by you786

  In an 2D endless runner, what should happen when the player is running "too fast" up a slope and jumps? For example, in a "normal" case: .O. . __..O_____ . / . / O/ _/ If he is moving to the right slowly enough, he will jump upwards and land on the flat part of the surface. However, if he is moving too fast, the jump will have no effect as his forward motion will bring him back in contact with the slope before he can get high enough to pass over it. When the speed is sufficiently high, there will effectively be no jump. _________ / .O/ O/ _/ Are there any known ways to solve this issue? I know it's physically correct*, but are there techniques that other games use to overcome this in a reasonable manner? As a last resort I'll have to just remove all slopes that are too slanted. *If you constrain the player to never jumping backwards.

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• DBA Best Practices: A Blog Series

  - by Argenis

    Introduction After the success of the “Demystifying DBA Best Practices” Pre-Conference that my good friend Robert Davis, a.k.a. SQLSoldier [Blog|Twitter] and I delivered at multiple events, including the PASS Summit 2012, I have decided to blog about some of the topics discussed at the Pre-Con. My thanks go to Robert for agreeing to share this content with the larger SQL Server community. This will be a rather lengthy blog series - and as in the Pre-Con, I expect a lot of interaction and feedback. Make sure you throw in your two cents in the comments section of every blog post. First topic that I’ll be discussing in this blog series: The thing of utmost importance for any Database Administrator: the data. Let’s discuss the importance of backups and a solid restore strategy. Care to share your thoughts on this subject in the comments section below?

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• Silverlight 4 + RIA Services - Ready for Business: Exposing WCF (SOAP\WSDL) Services

  Continuing in our series, I wanted to touch on how a RIA Services can be exposed as a Soap\WSDL service.   This is very useful if you want to enable the exact same business logic\data access logic is available to clients other than Silverlight.    For example to a WinForms application or WPF or even a console application.  SOAP is a particularly good model for interop with the Java\JEE world as well.    First you need to add a reference to Microsoft.ServiceModel.DomainSerivves.Hosting.EndPoints...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How to shrink Windows partition with unmovable files in dual boot installation

  - by Tim

  To install Ubuntu alongside Windows 7, I have to shrink Windows 7 partition C:. But due to some unmovable files, I cannot shrink as much as I plan by using Windows own shrinking tool. I guess many of you who have both OSes on the same hard drive must have similar experience. How to solve this problem? Any reference that can help is also appreciated! Thanks and regards! UPDATE: I have identified what unmovable file currently stop further shrinking: \ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\Indexer\CiFiles\00010015.wid::$DATA If I understand correctly, the file belongs to Windows Search. Can I set up somewhere in Windows system settings to temperately eliminate the file and similar ones (because there are many similar files under the same directory which I guess will also stand in the way of shrinking and unmovable by defrag)?

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• HTML5 - check if font has loaded

  - by espais

  At present I load my font for my game in with @font-face For instance: @font-face { font-family: 'Orbitron'; src: url('res/orbitron-medium.ttf'); } and then reference it throughout my JS implementation as such: ctx.font = "12pt Orbitron"; where ctx is my 2d context from the canvas. However, I notice a certain lag time while the font is downloaded to the user. Is there a way I can use a default font until it is loaded in? Edit - I'll expand the question, because I hadn't taken the first comment into account. What would the proper method of handling this be in the case that a user has disabled custom fonts?

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• What is an effective way to organize tasks for a new project?

  - by Dulan

  Is there a practical solution to organizing the initial tasks for a new project? To elaborate, imagine the features/stories/goals are laid out for a project. How might one go about organizing those into sane tasks for the first few versions? The scenario I typically have in mind has the features listed as a high-level reference for what the end user-experience should involve. The tasks for constructing such features are then broken down into chunks (such as "create interface for X component"). Such a task is not necessarily "tied" to only that feature and may be useful when building subsequent features. Is breaking features down into small, code-able solutions valid? Or should they be slightly removed from any specific implementation? I do not expect that there is one "right" answer to this question, but I am looking for a fairly pragmatic and unobtrusive approach. As a note, I'm looking for solutions that are independent of any tools or "systems" used for managing the tasks themselves.

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• Flowchart with subroutine

  - by Jordy

  I am not really sure how to correctly describe my question, so please forgive me if this is a duplicate. I am creating a flowchart for my program where I implement a method. Let's assume I call this method someMethod. The C code could look something like this: bool someMethod(int Foo, int Bar) { foo += 5; bar -= 5; return (foo == bar); } This means that my flowchart will have a subroutine block where I call this function. But how do I correctly show the reader which integers I pass? And when I create the flowchart of "someMethod", I face a similar problem: how do I correctly show the reader that Foo and Bar are passed parameters?

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• Are there references discussing the use parallel programming as a development methodology? [closed]

  - by ahsteele

  I work on a team which employs many of the extreme programming practices. We've gone to great lengths to utilize paired programming as much as possible. Unfortunately the practice sometimes breaks down and becomes ineffective. In looking for ways to tweak our process I came across two articles describing parallel pair programming: Parallel Pair Programming Death of paired programming. Its 2008 move on to parallel pairing While these are good resources I wanted to read a bit more on the topic. As you can imagine Googling for variations on parallel pair programming nets mostly results which relate to parallel programming. What I'm after is additional discussion on the topic of parallel pair programming. Do additional references exist that my Google-fu is unable to discern? Has anyone used the practice and care to share here (thus creating a reference)?

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• How are vertex shader outs sent as inputs to the fragment shader?

  - by Jeffrey

  I'm learning some OpenGL 3.2 way of doing things and I think it's quite great, I'm actually understanding more of shaders and non-fixed pipeline in 1 week rather than those 2 years I tried to learn OpenGL fixed pipeline functions. But here's my question: From what I think I've understood the vertex shader is run for each vertexes in the VBO. But the fragments shader is run per each pixel (is that right?) which is a huge number compared to let's say 3 vertexes of a triangle. Now it seems that in the vertex shader the out variables (like colors and stuff) are passed 1 to 1 to the fragment shader. But let's say that I pass to the fragment shader the position of the vertex in the vertex shader. How is all executed? What vertex (A, B or C of the hipothetical triangle) is passed per each fragment and why?

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• World to Pixel Transformation

  - by D00d

  My objects have a location in world coordinates (basically 1.0f is a meter). If I simply draw my objects using their world coordinates, each meter will correspond to a pixel. Obviously that's not what I want. Now, I don't want to have to apply a transformation to each and every object's position when I draw them. As I happen to be using XNA, and spritebatch allows a Matrix to be passed in as an argument in it's begin method, I was wondering if there is a way to pass the World to Pixel transformation in there. Any suggestions? So far Matrix.CreateScale(new Vector3(zoom, zoom, 1)) puts the objects in their proper spot, but it also scales up the sprites. Is there a way to transform the position without enlarging the sprite? Thanks

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• Creating a user called 'root'

  - by pnp

  I am creating Virtual Machines using the ubuntu-vm-builder. The syntax goes something like this: ubuntu-vm-builder kvm precise \ --domain newvm \ --dest newvm \ --arch i386 \ --hostname hostnameformyvm \ --mem 256 \ --user john \ --pass doe \ --ip 192.168.0.12 \ --mask 255.255.255.0 \ --net 192.168.0.0 \ --bcast 192.168.0.255 \ --gw 192.168.0.1 \ --dns 192.168.0.1 \ --mirror http://archive.localubuntumirror.net/ubuntu \ --components main,universe \ --addpkg acpid \ --addpkg vim \ --addpkg openssh-server \ --addpkg avahi-daemon \ --libvirt qemu:///system ; I need to enable the 'root' user account after creating each of my VMs (and supply a password for it). I was just wondering whether I can take this short-cut of supplying the username (--user) as root in this command itself. If I supply username as root to create my VMs, am I creating/enabling the root user, or just creating a user named as root? p.s.: any better ways to achieve my task are also welcome. But I don't want to manually meddle with each VM after its creation

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• Is my webhost infected? [on hold]

  - by Svein Erik

  I have 2 websites, and on both websites, randomly on time, get's redirected automatically to porn sites. I can't figure out if it's something in the code or if the webhost is infected somehow. The two sites is: http://www.storkas.com/vm and http://www.prowebdesign.no/vm. Where should i start to find out what's happening..? I scanned the sites on hxxp://sitecheck.sucuri.net. One odd thing i saw there, is a reference to: hxxp://js.nohealth.org/js/jquery-1.1.js. I do not have this in my html code..

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• VLC sur Android : première beta, le lecteur open-source arrive sur terminaux mobiles après l'imbroglio autour de sa version pour iOS

  VLC sur Android : première beta Le lecteur open-source arrive sur mobile après l'imbroglio autour de sa version pour iOS VLC est un lecteur multimédia de référence sur PC. Il est aussi un des projets open-source les plus importants pour le grand public au côté de Firefox. C'est d'ailleurs pour une histoire de compatibilité de la licence GPL avec l'AppStore et de DRM attaché à l'application une fois sur la galerie que le portage sur iOS a été abandonné ? alors même qu'il était finalisé. Résultat, VLC avait été retiré de l'AppStore quelques semaines seulement après y avoir été validé. Cet épisode avait créé au passage de fortes dissensions entre Remi Denis-Courmont ? un des...

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• Google new algorithm: My company have a 40 sites with different domains that some of their articles appears in my main website

  - by user5674576

  Hi, My company have a 40 sites with different domains that some of their articles appears in my main website with reference to their source. Our articles write by high level processionals in the field that they write about - we also pay them high salary. In recent google algorithm change my main site rating down very seriously. What should we do to restore company main site google rating? our solution and ideas that not working well: rel="canonical" to source website (we already have it before google change without results) meta "original-source" but not have rating influence (we already have it before google change without results) Edit:: maybe we should delete rel="canonical" from main website articles that refer to our other small websites (because this articles in main website not indexed in google)? Thanks in advance

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• Events and Presentations

  - by Enrique Lima

  There is a number of things going on this coming weekend, so this maybe pushing it … yet good to put it out there. June 2nd (tomorrow), presenting at SharePoint Saturday St. Louis.  The topic is SQL Server Health in a SharePoint environment. http://www.sharepointsaturday.org/stlouis/default.aspx I will be presenting the same topic at a joint session of the PASS group and SharePoint User Group in Evansville on July 17, 2012. http://evansville.sqlpass.org/ http://evansville.sharepointspace.com/default.aspx And then, July 28th I will be presenting at SharePoint Saturday New York City. The topic is Letting the Cards Speak: Agile Planning for SharePoint. http://www.sharepointsaturday.org/ny/default.aspx

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• How should I structure a solution for a long term project?

  - by sooprise

  I'm about to create a do-everything dashboard for my team and am still having second thoughts about my project/solution structure. Since this could be a long ongoing project, I want to get the structure right from the beginning. This is what I had in mind: Create a solution named "doEverythingDashboard" Delete the project named "doEverythingDashboard" under the solution "doEverythingDashboard" Create winform project named "interface" Create console applications projects for each functionality of "doEverythingDashboard" Reference each console application in "interface" Does this make any sense? Would it make more sense to just have one project and create a class per functionality instead of an entire project?

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• Citrix SDK: Where to start? [closed]

  - by Bob Dole

  I'm needing to start hacking around the Citrix SDK and am trying to figure out where to start. I'm wanting to basically find a way to pass data from the client to the server and figure out how to open an application on the citrix client. I see there is a XenApp SDK, and Virtual Channel SDK but really don't know which one I need to start with. I have a Citrix development virtual server set up, but am unsure how to get started. Does someone know of a good site/tutorial on how to get started with the various Citrix API's quickly?

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• Progressbar patterns (Eclipse)

  - by JesperE

  I've struggled quite a bit with Eclipse and progress-monitors to try to have good progressbars which report useful progress information to the user. Inevitably the code gets cluttered with lots of things like if (monitor.isCancelled()) return; ... lengthyMethodCall(monitor.newChild(10)); and all over the place I need to pass a IProgressMonitor as an argument to my methods. This is bad, for several reasons: The code gets cluttered with lots of code which is not relevant to what the function actually does. I need to manually guesstimate which parts of the code takes time, and which parts do not. It interacts badly with automated tests; where much of the information which goes into a progressbar instead should be logged for later inspection. Is there a way out of this? Are there tools which can help me out with one or more of these problems? Should I be looking at Aspect-Oriented Programming tools, or are there other alternatives?

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• When dealing with a static game board, what are some methods to make it more interesting?

  - by Ólafur Waage

  Let's say you have a game board that you look at. It does not move but there is some action going on. For example Chess, Checkers, Solitaire. The game I'm working on is not one of these but it's a good reference. What are some methods you can apply to the game or the design that increases the appeal of the game to the user? Of course you can make it prettier but what are some other methods you can use? For example: Visual cues, game design changes, user interface arrangement, etc.

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• Latest Exadata Quarterly Full Stack Patch

  - by Bethany Lapaglia

  The latest Quarterly Full Stack patch was released on October 17th for Exadata.  This patch contains all of the latest recommended patches for the Exadata Database Machine.  For more details, refer to My Oracle Support Note titled Database Machine and Exadata Storage Server 11g Release 2 (11.2) Supported Versions [888828.1].  Note that the information in the note applies only to Exadata Storage Server Software 11.2.  This note is maintained on a regular basis so bookmark it and use it as reference for the latest Exadata Database Machine patching recommendations.

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• How can I use smbclient to connect to Windows shares by hostname when a firewall is enabled?

  - by skyblue

  I can't connect to file shares on Windows computers using smbclient -L //hostname when the firewall is enabled. This occurs whether I'm using ufw (which allows outgoing traffic and replies back in with the default configuration) or iptables (where I'm allowing outgoing traffic and replies back in with iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT). However, smbclient -L //ip-address works whether the firewall is enabled or not. I also tested this against a Samba server running on Ubuntu and again smbclient -L //hostname does not work when the firewall is enabled, but smbclient -L //ip-address works whether the firewall is enabled or not. For reference, here are the iptables rules I used during testing: *filter :INPUT DROP [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT COMMIT

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• Configuration of LDAP client on 12.04

  - by user106515

  We have here a way to log in the computers base on Ldap(openldap). You can use any seat with the login/pass you have. Well my problem is that everything worked fine till I had to upgrade Ubuntu to the last version (12.04). Now, it is far from impossible to log in because you only can choose administrator account! That would be my issue; I want to Lightdm allow me to choose the user e.g : pagonzalez or rmlago or whatever the login-name you have. I´ve been searching for 2 days now, and nothing comes up! Hope somebody here has any idea about it!

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