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• Tessellating to a curve?

  - by Avi

  I'm creating a game engine, and I'm trying to define a 3D model format I want to use. I haven't come across a format that quite does what I want. My game engine assumes a shader model 5+ environment. By the time I'm finished with it, that won't be a very unreasonable requirement. Because it assumes such a modern environment, I'm going to try and exploit tessellation. The most popular way, it seems, to procedurally increase geometry through tessellation is to tessellate to a height map. This works for a lot of things, but has limitations in that height maps still use up VRAM and also only have finite scalability. So I want to be able to use curves to define what a mesh should tessellate to. The thing is, I have no idea what definition of curves I should use, how I should store it, and how I should tessellate to it. Do I use NURBS curves? Bezier? Hermite? And once I figure that out, is there an algorithm to determine how the tessellation shader should produce and move vertices to match the curve as closely as possible? Is the infinite scalability and lower memory usage when compared to height maps worth the added computational complexity? I'm sorry I'm kind if ignorant as to these matters. I just don't know where to start.

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• Rendering large and high poly meshes

  - by Aurus

  Consider an huge terrain that has a lot polygons, to render this terrain I thought of following techniques: Using height-map instead of raw meshes: Yes, but I want to create a lot of caves and stuff that simply wont work with height-maps. Using voxels: Yes, but I think that this would be to much since I don't even want to support changing terrain.. Split into multiple chunks and do some sort of LOD with the mesh: Yes, but how would I do that? Tessellation usually creates more detail not less. Precompute the same mesh in lower poly version (like Mudbox does) and depending on the distance it renders one of these meshes: Graphic memory is limited and uploading only the chunks won't solve that problem since the traffic would be too high. IMO the last one sounds really good, but imagine the following process: Upload and render the chunks depending on the current player position. [No problem] Player will walk straight forward Now we maybe have to change on of the low poly chunk with the high poly one So, Remove the low poly chunk and load the high poly chunk [Already to much traffic here, I think] I am not very experienced in graphic programming and maybe the upper process is totally okay but somehow I think it is too much. And how about the disk space it would require.. I think 3 kind of levels would be fine but isn't that also too much? (I am using OpenGL but I don't think that this is important)

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• No NFC for the iPhone, and here's why

  - by David Dorf

  I, like many others in the retail industry, was hoping the iPhone 5 would include an NFC chip that enabled a mobile wallet.  In previous postings I've discussed the possible business case and the foreshadowing of Passbook, but it wasn't meant to be.  A few weeks ago I was considering all the rumors, and it suddenly occurred to me that it wasn't in Apple's best interest to support an NFC chip.  Yes they have patents in this area, but perhaps they are more defensive than indicating new development. Steve Jobs wanted to always win, but more importantly he didn't want others to win at his expense.  It drove him nuts that Windows was more successful than MacOS, and clearly he was bothered by Samsung and other handset manufacturers copying the iPhone.  But he was most angry at Google for their stewardship of Android. If the iPhone 5 had an NFC chip, who would benefit most?  Google Wallet is far and away the leader in NFC-based payments via mobile phones in the US.  Even without Steve at the helm, Apple isn't going to do anything to help Google.  Plus Apple doesn't like to do things in an open way -- then they lose control.  For example, you don't see iPhones with expandable memory, replaceable batteries, or USB connectors.  Adding a standards-based NFC chip just isn't in their nature. So I don't think Apple is holding back on the NFC chip for the 5S or 6.  It just isn't going to happen unless they can figure out how to prevent others from benefiting from it. All the other handset manufacturers will use NFC as a differentiator, which may be enough to keep Google and Isis afloat, and of course Square and PayPal aren't betting on NFC anyway.  This isn't the end of alternative payments, its just a major speed bump.

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• Math questions at a programmer interview?

  - by anon

  So I went to an interview at Samsung here in Dallas, Texas. The way the recruiter described the job, he didn't make it sound like it was too math-oriented. The job basically involved graphics programming and C++. Yes, math is implied in graphics programming, especially shaders, but I still wasn't expecting this... The whole interview lasted about an hour and a half and they asked me nothing but math-related questions. They didn't ask me a single programming question, which I found odd. About all they did was ask me how to write certain math routines as a C++ function, but that's about it. What about programming philosophy questions? Design patterns? Code-correctness? Constness? Exception safety? Thread safety? There are a zillion topics that they could have covered. But they didn't. The main concern I have is that they didn't ask any programming questions. This basically implies to me that any programmer who is good at math can get a job here, but they might put out terrible code. Of course, I think I bombed the interview because I haven't used any sort of linear algebra in about a year and I forget math easily if I haven't used it in practice for a while. Are any of my other fellow programmers out there this way? I'm a game programmer too, so this seems especially odd. The more I learn, the more old knowledge that gets "popped" out of my "stack" (memory). My question is: Does this interview seem suspicious? Is this a typical interview that large corporations have? During the interview they told me that Google's interview process is similar. They have multiple, consecutive interviews where the math problems get more advanced.

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• OBIEE 11g 11.1.1.6.11 is Available For BI Enterprise and Exalytics

  - by p.anda

  (in via Ian & Martin) OBIEE 11g 11.1.1.6.11 is Available For BI Enterprise and Exalytics The Business Intelligence Enterprise Edition 11.1.1.6.11 patch set has been released and is available to download from My Oracle Support (https://support.oracle.com).Per the patch readme: This patch set is available for all customers who are using Oracle Business Intelligence Enterprise Edition 11.1.1.6.0, 11.1.1.6.1, 11.1.1.6.2, 11.1.1.6.2 BP1, 11.1.1.6.4, 11.1.1.6.5, 11.1.1.6.6, 11.1.1.6.7, 11.1.1.6.8, 11.1.1.6.9 and 11.1.1.6.10. Oracle Exalytics customers must only install this Oracle Business Intelligence patch set if it is certified for the specific Oracle Exalytics patch or patch set update that they are applying. For more information see Oracle Fusion Middleware Installation and Administration Guide for Oracle Exalytics In-Memory Machine and the Oracle Exalytics certification information. The Oracle Business Intelligence 11.1.1.6.11 patch set is comprised of the following patches: Patch 16747681 - 1 of 7 Oracle Business Intelligence Installer (BIINST)Patch 16747684 - 2 of 7 Oracle Real Time Decisions (RTD)Patch 16747692 - 3 of 7 Oracle Business Intelligence Publisher (BIP)Patch 16747699 - 4 of 7 Oracle Business Intelligence ADF Components (BIADFCOMPS)Patch 16747703 - 5 of 7 Enterprise Performance Management Components Installed from BI Installer 11.1.1.6.x (BIFNDNEPM)Patch 16717325 - 6 of 7 Oracle Business Intelligence: (OBIEE)Patch 16747708 - 7 of 7 Oracle Business Intelligence Platform Client Installers and MapViewer Note: - The Readme files for the above patches describe the bugs fixed in each patch, and any known bugs with the patch.- This patch is cumulative, and therefore, contains all of the fixes included in the earlier 11.1.1.6.2, 11.1.1.6.4, 11.1.1.6.5, 11.1.1.6.6, 11.1.1.6.7, 11.1.1.6.8, 11.1.1.6.9 and 11.1.1.6.10 patch sets.- However, lists of fixes from included patch sets need to be looked up in the respective patches' readme files, and are not included in the above patches' readme files.- The instructions to apply the above patches are identical, and are contained in the readme file for patch 16747681.- Please bear in mind, that the readme states to apply patch 13952743 for JDeveloper, too.

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• Ubuntu 12.04 LTS 32bit does not detect 4Gb ram

  - by David

  I have recently installed 4Gb of ram for an existing 12.04 32bit Ubuntu. It's not being recognised, only 3.2Gb is showing, See: administrator@Root2:~$ free total used free shared buffers cached Mem: 3355256 1251112 2104144 0 48664 391972 -/+ buffers/cache: 810476 2544780 System is PAE capable, See: administrator@Root2:~$ grep --color=always -i PAE /proc/cpuinfo flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts The system us fully patched and tried to run manual PAE upgrade, See: administrator@Root2:~$ sudo apt-get install linux-generic-pae linux-headers-generic-pae [sudo] password for administrator: Reading package lists... Done Building dependency tree Reading state information... Done linux-generic-pae is already the newest version. linux-headers-generic-pae is already the newest version. The following packages were automatically installed and are no longer required: language-pack-zh-hans language-pack-kde-en language-pack-kde-zh-hans language-pack-kde-en-base kde-l10n-engb kde-l10n-zhcn language-pack-zh-hans-base firefox-locale-zh-hans language-pack-kde-zh-hans-base Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. I am not sure what else to try to recognise the full physical memory installed other than loading 64bit. Any thoughts? Thanks! output of uname -r administrator@Root2:~$ uname -r 3.2.0-24-generic-pae

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• Dynamic/Adaptive RLE

  - by Lucius

  So, I'm developing a 2D, tile based game and a map maker thingy - all in Java. The problem is that recently I've been having some memory issues when about 4 maps are loaded. Each one of these maps are composed of 128x128 tiles and have 4 layers (for details and stuff). I already spent a good amount of time searching for solutions and the best thing I found was run-length enconding (RLE). It seems easy enough to use with static data, but is there a way to use it with data that is constantly changing, without a big drop in performance? In my maps, supposing I'm compressing the columns, I would have 128 rows, each with some amount of data (hopefully less than it would be without RLE). Whenever I change a tile, that whole row would have to be checked and I'm affraid that would slow down too much the production (and I'm in a somewhat tight schedule). Well, worst case scenario I work on each map individually, and save them using RLE, but it would be really nice if I could avoind that. EDIT: What I'm currently using to store the data for the tiles is a 2D array of HashMaps that use the layer as key and store the id of the tile in that position - like this: private HashMap< Integer, Integer [][]

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• WPF Applications &ndash; Handling the Unhandled

  - by David Totzke

  Instead of just letting your application crash, you can attach a method to the DispatcherUnhandledExceptionEventHandler and one to the AppDomain.Current.UnhandledException.  You wire these up in the code behind of your application which by default is App.xaml.cs.  You can log these errors or throw up a message Don Box and tell the user what happened.  Then you shut down the app gracefully.  You shut it down because something bad happened that you weren’t expecting and at this point there is no guarantee as to the state of the stack or memory or anything really.  All bets are off. If, on the other hand, the method for the UnhandledException is empty and the method for the DispatcherUnhandledEventHandler ends up in a call to a method called LogError() and the LogError() method is FUCKING EMPTY, and you just swallow the exceptions and keep on running, then, not so much.  I spent nearly a day trying to track down a bug that would have been obvious had something been logged or if it just crashed.  It’s my own fault I suppose.  I knew these were hooked up.  I just never suspected that there wouldn’t be any implementation at all.  Live and learn. Customs Man at Heathrow: Anything to declare, Sir? Jekyll and Hyde: Man has not evolved an inch from the slime that spawned him. Customs Man at Heathrow: Very Good, Sir. I tend to agree. Dave Just because I can…

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• Atelier gratuit : Découvrir la solution d'exploration de données structuré et non structuré

  - by David lefranc

  Explorer et découvrir l’information… Nous vous proposons un atelier découverte pour vous permettre d’explorer toute type de données grace à la solution Oracle Endeca Information Discovery. Quand : 7 Décembre 2012 De 9h30 à 12h30  Lieu : Oracle 15 Boulevard Charles de gaulle 92715 Colombes Pour s'inscrire : [email protected] Réalisé pour des utilisateurs métiers, cet atelier vous permettera en une demi journée , de découvrir Oracle Endeca Information Discovery afin de : Comprendre et explorer toute information venant de différents horizons ( Big Data, réseaux sociaux, forums, sondages, blogs..) Découvrir en quoi et comment OEID est un complément à des solutions de BI classiques Par une navigation simple et rapide, vous découvrirez combien il est facile de trouver des réponses à des questions imprévues en utilisant OEID sans formation préalable. Utilisez la recherche et la navigation guidée pour voir comment les informations structurées et non structurées peuvent être rapidement réunies pour dégager la valeur cachée. Explorer toutes vos données dans n'importe quel format et à partir de n'importe quelle source, y compris les médias sociaux, documents, fichiers,…. Pouvoir découvrir et explorer vos données sans référentiel pour permettre aux utilisateurs d’être autonome et d’analyser leurs propres données de manière rapide Élaborer une stratégie visant à accroître la valeur des données de l'entreprise tout en réduisant le coût total de possession Découvrez l'incroyable performance d’ Endeca sur Oracle Exalytics la machine In Memory Agenda Après une introduction sur la solution Oracle information Endeca, suivi d’un atelier, vous verrez comment il est facile de: Utiliser la navigation guidée et le moteur de recherche pour explorer les données structurées et non structurées intégrer rapidement les nouvelles sources de données comme les médias sociaux Construire de nouvelles interfaces utilisateur tout en découvrant l’information répondre rapidement aux besoins changeants des entreprises et des environnements de données Quand Lieu 7 Décembre 2012 De 9h30 à 12h30 Oracle 15 Boulevard Charles de gaulle 92715 Colombes

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• Maintaining State in Mud Engine

  - by Johnathon Sullinger

  I am currently working on a Mud Engine and have started implementing my state engine. One of the things that has me troubled is maintaining different states at once. For instance, lets say that the user has started a tutorial, which requires specific input. If the user types "help" I want to switch in to a help state, so they can get the help they need, then return them to the original state once exiting the help. my state system uses a State Manager to manage the state per user: public class StateManager { /// <summary> /// Gets the current state. /// </summary> public IState CurrentState { get; private set; } /// <summary> /// Gets the states available for use. /// </summary> /// <value> public List<IState> States { get; private set; } /// <summary> /// Gets the commands available. /// </summary> public List<ICommand> Commands { get; private set; } /// <summary> /// Gets the mob that this manager controls the state of. /// </summary> public IMob Mob { get; private set; } public void Initialize(IMob mob, IState initialState = null) { this.Mob = mob; if (initialState != null) { this.SwitchState(initialState); } } /// <summary> /// Performs the command. /// </summary> /// <param name="message">The message.</param> public void PerformCommand(IMessage message) { if (this.CurrentState != null) { ICommand command = this.CurrentState.GetCommand(message); if (command is NoOpCommand) { // NoOperation commands indicate that the current state is not finished yet. this.CurrentState.Render(this.Mob); } else if (command != null) { command.Execute(this.Mob); } else if (command == null) { new InvalidCommand().Execute(this.Mob); } } } /// <summary> /// Switches the state. /// </summary> /// <param name="state">The state.</param> public void SwitchState(IState state) { if (this.CurrentState != null) { this.CurrentState.Cleanup(); } this.CurrentState = state; if (state != null) { this.CurrentState.Render(this.Mob); } } } Each of the different states that the user can be in, is a Type implementing IState. public interface IState { /// <summary> /// Renders the current state to the players terminal. /// </summary> /// <param name="player">The player to render to</param> void Render(IMob mob); /// <summary> /// Gets the Command that the player entered and preps it for execution. /// </summary> /// <returns></returns> ICommand GetCommand(IMessage command); /// <summary> /// Cleanups this instance during a state change. /// </summary> void Cleanup(); } Example state: public class ConnectState : IState { /// <summary> /// The connected player /// </summary> private IMob connectedPlayer; public void Render(IMob mob) { if (!(mob is IPlayer)) { throw new NullReferenceException("ConnectState can only be used with a player object implementing IPlayer"); } //Store a reference for the GetCommand() method to use. this.connectedPlayer = mob as IPlayer; var server = mob.Game as IServer; var game = mob.Game as IGame; // It is not guaranteed that mob.Game will implement IServer. We are only guaranteed that it will implement IGame. if (server == null) { throw new NullReferenceException("LoginState can only be set to a player object that is part of a server."); } //Output the game information mob.Send(new InformationalMessage(game.Name)); mob.Send(new InformationalMessage(game.Description)); mob.Send(new InformationalMessage(string.Empty)); //blank line //Output the server MOTD information mob.Send(new InformationalMessage(string.Join("\n", server.MessageOfTheDay))); mob.Send(new InformationalMessage(string.Empty)); //blank line mob.StateManager.SwitchState(new LoginState()); } /// <summary> /// Gets the command. /// </summary> /// <param name="message">The message.</param> /// <returns>Returns no operation required.</returns> public Commands.ICommand GetCommand(IMessage message) { return new NoOpCommand(); } /// <summary> /// Cleanups this instance during a state change. /// </summary> public void Cleanup() { // We have nothing to clean up. return; } } With the way that I have my FSM set up at the moment, the user can only ever have one state at a time. I read a few different posts on here about state management but nothing regarding keeping a stack history. I thought about using a Stack collection, and just pushing new states on to the stack then popping them off as the user moves out from one. It seems like it would work, but I'm not sure if it is the best approach to take. I'm looking for recommendations on this. I'm currently swapping state from within the individual states themselves as well which I'm on the fence about if it makes sense to do there or not. The user enters a command, the StateManager passes the command to the current State and lets it determine if it needs it (like passing in a password after entering a user name), if the state doesn't need any further commands, it returns null. If it does need to continue doing work, it returns a No Operation to let the state manager know that the state still requires further input from the user. If null is returned, the state manager will then go find the appropriate state for the command entered by the user. Example state requiring additional input from the user public class LoginState : IState { /// <summary> /// The connected player /// </summary> private IPlayer connectedPlayer; private enum CurrentState { FetchUserName, FetchPassword, InvalidUser, } private CurrentState currentState; /// <summary> /// Renders the current state to the players terminal. /// </summary> /// <param name="mob"></param> /// <exception cref="System.NullReferenceException"> /// ConnectState can only be used with a player object implementing IPlayer /// or /// LoginState can only be set to a player object that is part of a server. /// </exception> public void Render(IMob mob) { if (!(mob is IPlayer)) { throw new NullReferenceException("ConnectState can only be used with a player object implementing IPlayer"); } //Store a reference for the GetCommand() method to use. this.connectedPlayer = mob as IPlayer; var server = mob.Game as IServer; // Register to receive new input from the user. mob.ReceivedMessage += connectedPlayer_ReceivedMessage; if (server == null) { throw new NullReferenceException("LoginState can only be set to a player object that is part of a server."); } this.currentState = CurrentState.FetchUserName; switch (this.currentState) { case CurrentState.FetchUserName: mob.Send(new InputMessage("Please enter your user name")); break; case CurrentState.FetchPassword: mob.Send(new InputMessage("Please enter your password")); break; case CurrentState.InvalidUser: mob.Send(new InformationalMessage("Invalid username/password specified.")); this.currentState = CurrentState.FetchUserName; mob.Send(new InputMessage("Please enter your user name")); break; } } /// <summary> /// Receives the players input. /// </summary> /// <param name="sender">The sender.</param> /// <param name="e">The e.</param> void connectedPlayer_ReceivedMessage(object sender, IMessage e) { // Be good memory citizens and clean ourself up after receiving a message. // Not doing this results in duplicate events being registered and memory leaks. this.connectedPlayer.ReceivedMessage -= connectedPlayer_ReceivedMessage; ICommand command = this.GetCommand(e); } /// <summary> /// Gets the Command that the player entered and preps it for execution. /// </summary> /// <param name="command"></param> /// <returns>Returns the ICommand specified.</returns> public Commands.ICommand GetCommand(IMessage command) { if (this.currentState == CurrentState.FetchUserName) { this.connectedPlayer.Name = command.Message; this.currentState = CurrentState.FetchPassword; } else if (this.currentState == CurrentState.FetchPassword) { // find user } return new NoOpCommand(); } /// <summary> /// Cleanups this instance during a state change. /// </summary> public void Cleanup() { // If we have a player instance, we clean up the registered event. if (this.connectedPlayer != null) { this.connectedPlayer.ReceivedMessage -= this.connectedPlayer_ReceivedMessage; } } Maybe my entire FSM isn't wired up in the best way, but I would appreciate input on what would be the best to maintain a stack of state in a MUD game engine, and if my states should be allowed to receive the input from the user or not to check what command was entered before allowing the state manager to switch states. Thanks in advance.

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• How to explain a layperson why a developer should not be interrupted while neck-deep in coding?

  - by András Szepesházi

  If you just consider the second part of my question, "Why a developer should not be interrupted while neck-deep in coding", that has been discussed a number of times by smart people. Heck, even the co-founder of SO, Joel Spolsky, wrote a blog post about "getting in the zone" and "being knocked out of the zone" and why it takes an average of 15 minutes to achieve productivity when participating in complex, software development related tasks. So I think the why has been established. What I'm interested in is how to explain all that to somebody who doesn't know beans about Beans (khmm I mean software development). How to tell the wife, or the funny guy from accounting at the workplace, or the long time friend who pings you on Skype every 30 minutes with a "Wazzzzzzup?!", that all the interruptions have a much deeper impact on your work than the obvious 30 seconds they took from your time. Obviously you can't explain it by sentences like "I have to juggle a lot of variable names in my short term memory" unless you want to be the target of blank stares or friendly abuse. I'd like to be able to explain all that to non-developers in a way that will make them clearly understand - without being offensive, elitist or too technical.

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• Cloud computing - database loading question

  - by workwise

  Following is the situation, I want to know whether what I want is possible in cloud computing and is it the best way for me: 1) My main site has a Database with tables with millions of rows, and entries are added almost every second. 2) I will setup a mysql mirror, so there will be a backup database always in sync with the main one. 3) There are few tens of thousands of images- growing. So say total size of images few tens of gigabytes. I will be keeping the image data also in sync on the backup server. 4) There can be short periods where traffic can go 100X the average traffic. 5) I will be using memcache heavily - most database and even frequently used disk files/images will be in RAM. I want that the main site runs on a dedicated server. The backup server is say an Amazon EC2 instance. Now note that since it is live backup, I need to run a small instance continuously. I want that when I anticipate high traffic, I should be able to run a large instance on the cloud and transfer the traffic there. The main point is - I do not want to spend time in "loading" the database on the large instance, as it typically can take few minutes or even hours (experience). So is it possible to just scale the memory/CPU on demand, and not having to load the database or sync up the filesystem? I want to setup my backup scripts etc just ONCE. Thanks JP

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• What causes critical glib errors (when coding using messaging menu)?

  - by fluteflute

  If I run the python code below (almost entirely from this useful blog post) then I get three identical nasty looking error messages in the terminal. What might be causing them? I note the number (5857 in the example below) changes slightly on each run. What does this number signify? Is it a memory location or something similar? (messaging-menu.py:5857): GLib-GIO-CRITICAL **: g_dbus_method_invocation_return_dbus_error: assertion `error_name != NULL && g_dbus_is_name (error_name)' failed (messaging-menu.py:5857): GLib-GIO-CRITICAL **: g_dbus_method_invocation_return_dbus_error: assertion `error_name != NULL && g_dbus_is_name (error_name)' failed (messaging-menu.py:5857): GLib-GIO-CRITICAL **: g_dbus_method_invocation_return_dbus_error: assertion `error_name != NULL && g_dbus_is_name (error_name)' failed I'm running this on Natty, I should probably find out if I get the same errors in 10.10 though... import gtk def show_window_function(x, y): print x print y # get the indicate module, which does all the work import indicate # Create a server item mm = indicate.indicate_server_ref_default() # If someone clicks your server item in the MM, fire the server-display signal mm.connect("server-display", show_window_function) # Set the type of messages that your item uses. It's not at all clear which types # you're allowed to use, here. mm.set_type("message.im") # You must specify a .desktop file: this is where the MM gets the name of your # app from. mm.set_desktop_file("/usr/share/applications/nautilus.desktop") # Show the item in the MM. mm.show() # Create a source item mm_source = indicate.Indicator() # Again, it's not clear which subtypes you are allowed to use here. mm_source.set_property("subtype", "im") # "Sender" is the text that appears in the source item in the MM mm_source.set_property("sender", "Unread") # If someone clicks this source item in the MM, fire the user-display signal mm_source.connect("user-display", show_window_function) # Light up the messaging menu so that people know something has changed mm_source.set_property("draw-attention", "true") # Set the count of messages in this source. mm_source.set_property("count", "15") # If you prefer, you can set the time of the last message from this source, # rather than the count. (You can't set both.) This means that instead of a # message count, the MM will show "2m" or similar for the time since this # message arrived. # mm_source.set_property_time("time", time.time()) mm_source.show() gtk.main()

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• Is DQS-in-the-cloud on its way?

  - by jamiet

  LinkedIn profiles are always a useful place to find out what's really going on in Microsoft. Today I stumbled upon this little nugget from former SSIS product team member Matt Carroll: March 2012 – December 2012 (10 months)Redmond, WA Took ownership of the SQL 2012 Data Quality Services box product and re-architected and extended it to become a cloud service. Led team and managed product to add dynamic scale, security, multi-tenancy, deployment, logging, monitoring, and telemetry as well as creating new Excel add-in and new ecosystem experience around easily sharing and finding cleansing agents. Personally designed, coded, and unit tested in-memory trigram matching algorithm core to better performance, scale and maintainability. Delivered and supported successful private preview of the new service prior to SQL wide reorganization.  http://www.linkedin.com/profile/view?id=9657184  Sounds as though a Data-Quality-Services-in-the-cloud (which I spoke of as being a useful addition to Microsoft's BI portfolio in my previous blog post Thoughts on Power BI for Office 365 ) might be on its way some time in the future. And what's this SQL wide reorganization? Interesting stuff. @Jamiet  

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• Attend my Tech Ed 2014 session: Debugging Tips and Tricks

  - by Daniel Moth

  Just a week away, at Tech Ed 2014 NA in Houston Texas, I will be giving a demo presentation that you will not want to miss (assuming you code in Visual Studio). Add it to your calendar now: DEV-B352 Debugging Tips and Tricks in Visual Studio 2013 (link) Monday, May 12 1:15-2:30 PM, Room: General Assembly C As a developer, regardless of your programming language or the platform that you target, you use the debugger on a daily basis. Come to this all-demo session to learn how to make the most of the Visual Studio debugger, and hence be more productive and effective in your everyday development. We tour almost all of the debugger surface and many of its commands, throwing in tips and tricks as we go along, and also calling out what is brand new in the latest version of the debugger in Microsoft Visual Studio 2013. Whatever your experience level, you are guaranteed to leave with new knowledge of debugger features that you will want to use immediately when you are back at your computer!   I am also co-presenting another session later in the week. DEV-B313 Diagnosing Issues in Windows Phone 8.1 XAML Applications Using Visual Studio 2013 (link) Thursday, May 15 10:15-11:30 AM, Room: 340 Come to this demo-driven session to learn how to use the latest diagnostic tools in Visual Studio 2013 to make your Windows Phone 8.1 XAML apps reliable, fast, and efficient. Learn how to make the most of existing capabilities in the debugger as well as new debugging features for diagnosing correctness issues. Also, see the Visual Studio Performance and Diagnostics hub in action with its performance analysis tools for diagnosing CPU usage, memory usage, and energy consumption. The techniques covered in this session apply equally well for Windows Store apps as well as Windows Phone Store apps, so all your device development needs will be covered.   Links to both sessions from my Tech Ed speaker page. See you there! Comments about this post by Daniel Moth welcome at the original blog.

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• How to manage focus for a small set of simple widgets

  - by Christoph

  I'm developing a set of simple widgets for a small (128x128) display. For example I'd like to have a main screen with an overlay menu which I can use to toggle visibilty of main screen elements. Each option would be an icon with a box around it while it is selected. Button (left, up, right, down, enter) events should be given to the widget that has "focus". Focus is a simple thing to understand when using a GUI, but I'm having trouble implementing this. Can you suggest a simple concept for managing focus and input events? I have these simple ideas: Only one widget can have focus, so I need a single pointer to that widget. When this widget gets some kind of "cycle" input (as in "highlight the next item in this list"), the focus is given to a different widget. a widget must have a way of telling the application which widget the focus is given to next. if a widget cannot give a "next focus" hint, the application must be able to figure out where the focus should go. Widgets are currently structured like this: A widget can have a parent, which is passed to the constructor. Widgets are created statically, as I want to avoid dynamic memory allocation (I only have 16kB of RAM and I'd like to have control over that). widgets have siblings, implemented as an intrusive linked list (they have a next member). A parent has a pointer to the head of its list of children. Input events are arguments to the widgets buttonEvent methods which can accept or ignore that event. If it ignores the event, it can pass the event to its parent. My Questions: How can I manage focus for these widgets? Am I making this too complicated?

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• Design of input files reading when it comes to defaults/transformations

  - by Stefano Borini

  Suppose you have an application that reads an input file, on a language that does not support the concept of None. The input is read, parsed, and the contents are stored on a structure for later use. Now, in general you want to keep into account transformation of the data from the input, such as adding default values when not specified, or adding full path information to relative path specified in the input. There are two different strategies to achieve this. The first strategy is to perform these transformations at input file reading time. In practice, you put all the intelligence into the input parser, and your application has no logic to deal with unexpected circumstances, such as an unspecified value. You lose the information of what was specified and what wasn't, but you gain in black-boxing the details. Your "running code" needs that information in any case and in a proper form, and is not concerned if it's the default or a user-specified information. The second strategy is to have the file reader a real one-to-one mapper from the file to a memory-stored object, with no intelligent behavior. unspecified values are not filled (which may however be a problem in languages not supporting None) and data is stored verbatim from the file. The intelligence for recovery must now go into the "running code", which must check what was specified in the file, eventually fall back to a default, or modify the input properly before using it. I would like to know your opinion on these two approaches, and in particular which one you found the most frequently implemented.

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• Seeking an C/C++ OBJ geometry read/write that does not modify the representation

  - by Blake Senftner

  I am seeking a means to read and write OBJ geometry files with logic that does not modify the geometry representation. i.e. read geometry, immediately write it, and a diff of the source OBJ and the one just written will be identical. Every OBJ writing utility I've been able to find online fails this test. I am writing small command line tools to modify my OBJ geometries, and I need to write my results, not just read the geometry for rendering purposes. Simply needing to write the geometry knocks out 95% of the OBJ libraries on the web. Also, many of the popular libraries modify the geometry representation. For example, Nat Robbin's GLUT library includes the GLM library, which both converts quads to triangles, as well as reverses the topology (face ordering) of the geometry. It's still the same geometry, but if your tool chain expects a given topology, such as for rigging or morph targets, then GLM is useless. I'm not rendering in these tools, so dependencies like OpenGL or GLUT make no sense. And god forbid, do not "optimize" the geometry! Redundant vertices are on purpose for maintaining oneself on cache with our weird little low memory mobile devices.

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• Enterprise Software Development with Java by Markus Eisele

  - by JuergenKress

  This is a blog about software development for the enterprise. It focuses on Java Enterprise Edition (J2EE/Java EE). Beside this, I blog about Oracle WebLogic and GlassFish Server and other technologies that hit my road. Java Mission Control 5.2 is Finally Here! Welcome 7u40! It has been a while since we last heard of this fancy little thing called Mission Control. It came all the way from JRockit and was renamed to Java Mission Control. This is one of the parts which literally survived the convergence strategy between HotSpot and JRockit. With today's Java SE 7 Update 40 you can actually use it again. Java Mission Control 5.2 The former JRockit Mission Control (JRMC) is now called Java Mission Control (JMC) and is a tools suite which includes tools to monitor, manage, profile, and eliminate memory leaks in your Java application without introducing the performance overhead normally associated with tools of this type. Up to today the 5.1 version was available within the Oracle HotSpot downloads which could only be received by paying customers from the Oracle Support Website. Todays release is the first release of Java Mission Control that is bundled with the Hotspot JDK! The convergence project between JRockit and Hotspot has reached critical mass. With the 7u40 release of the Hotspot JDK there is an equivalent amount of Flight Recorder information available from Hotspot. Read the full article here. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Markus Eisele,Java Development,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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• How to use Pixel Bender (pbj) in ActionScript3 on large Vectors to make fast calculations?

  - by Arthur Wulf White

  Remember my old question: 2d game view camera zoom, rotation & offset using 'Filter' / 'Shader' processing? I figured I could use a Pixel Bender Shader to do the computation for any large group of elements in a game to save on processing time. At least it's a theory worth checking. I also read this question: Pass large array to pixel shader Which I'm guessing is about accomplishing the same thing in a different language. I read this tutorial: http://unitzeroone.com/blog/2009/03/18/flash-10-massive-amounts-of-3d-particles-with-alchemy-source-included/ I am attempting to do some tests. Here is some of the code: private const SIZE : int = Math.pow(10, 5); private var testVectorNum : Vector.<Number>; private function testShader():void { shader.data.ab.value = [1.0, 8.0]; shader.data.src.input = testVectorNum; shader.data.src.width = SIZE/400; shader.data.src.height = 100; shaderJob = new ShaderJob(shader, testVectorNum, SIZE / 4, 1); var time : int = getTimer(), i : int = 0; shaderJob.start(true); trace("TEST1 : ", getTimer() - time); } The problem is that I keep getting a error saying: [Fault] exception, information=Error: Error #1000: The system is out of memory. Update: I managed to partially workaround the problem by converting the vector into bitmapData: (Using this technique I still get a speed boost of 3x using Pixel Bender) private function testShader():void { shader.data.ab.value = [1.0, 8.0]; var time : int = getTimer(), i : int = 0; testBitmapData.setVector(testBitmapData.rect, testVectorInt); shader.data.src.input = testBitmapData; shaderJob = new ShaderJob(shader, testBitmapData); shaderJob.start(true); testVectorInt = testBitmapData.getVector(testBitmapData.rect); trace("TEST1 : ", getTimer() - time); }

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• Gmail Doesn't Like My Cron

  - by Robery Stackhouse

  You might wonder what *nix administration has to do with maker culture. Plenty, if *nix is your automation platform of choice. I am using Ubuntu, Exim, and Ruby as the supporting cast of characters for my reminder service. Being able to send yourself an email with some data or a link at a pre-selected time is a pretty handy thing to be able to do indeed. Works great for jogging my less-than-great memory. http://www.linuxsa.org.au/tips/time.html http://forum.slicehost.com/comments.php?DiscussionID=402&page=1 http://articles.slicehost.com/2007/10/24/creating-a-reverse-dns-record http://forum.slicehost.com/comments.php?DiscussionID=1900 http://www.cyberciti.biz/faq/how-to-test-or-check-reverse-dns/ After going on a huge round the world wild goose chase, I finally was told by someone on the exim-users list that my IP was in a range blocked by Spamhaus PBL. Google said I need an SPF record http://articles.slicehost.com/2008/8/8/email-setting-a-sender-policy-framework-spf-record http://old.openspf.org/wizard.html http://www.kitterman.com/spf/validate.html The version of Exim that I could get from the Ubuntu package manager didn't support DKIM. So I uninstalled Exim and installed Postfix https://help.ubuntu.com/community/UbuntuTime http://www.sendmail.org/dkim/checker

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• What are the possible options for AI path-finding etc when the world is "partitionned"?

  - by Sebastien Diot

  If you anticipate a large persistent game world, and you don't want to end up with some game server crashing due to overload, then you have to design from the ground up a game world that is partitioned in chunks. This is in particular true if you want to run your game servers in the cloud, where each individual VM is relatively week, and memory and CPU are at a premium. I think the biggest challenge here is that the player receives all the parts around the location of the avatar, but mobs/monsters are normally located in the server itself, and can only directly access the data about the part of the world that the server own. So how can we make the AI behave realistically in that context? It can send queries to the other servers that own the neighboring parts, but that sounds rather network intensive and latency prone. It would probably be more performant for each mob AI to be spread over the neighboring parts, and proactively send the relevant info to the part that contains the actual mob atm. That would also reduce the stress in a mob crossing a border between two parts, and therefore "switching server". Have you heard of any AI design that solves those issues? Some kind of distributed AI brain? Maybe some kind of "agent" community working together through message passing?

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• CodePlex Daily Summary for Wednesday, June 11, 2014

  CodePlex Daily Summary for Wednesday, June 11, 2014Popular Releasescrashme: crashme 2.8.4 for 64 bit Windows: This release has new functionality that makes crashme potent in 64-bit processor architectures. This potency has been generally absent for several years, ever since Data Execution Prevention (DEP) became the default setting in most operating systems. After installation the TEST1.BAT short-cut will produce CRASHME-TEST1-MT.LOG containing the following process fatal exit exceptions after a 30-second run: EXCEPTION_SINGLE_STEP EXCEPTION_FLT_OVERFLOW EXCEPTION_DATATYPE_MISALIGNMENT EXCEPT...Random Execute: Random Execute Alpha Release: This release is the Alpha Release and more functionality to come based upon your feedback. Thanks!Bango Payment Flow in-app payments: Bango Payment Flow in-app payments example app: Sample application that uses the Bango Payment Flow SDKEssence#: Ark-2: The Ark-2 release provides fixes for bugs and for increased stability and robustness. It also features significant performance improvements. The only directly-visible difference is that the optional "Script run time" timing report no longer includes the time to setup and run the compiler, so it's a pure benchmark of the time required to actually execute a script.VidCoder: 1.5.23 Beta: Added first translations for 1.5. Includes new languages Portuguese, Japanese, Chinese Simplified and Czech. Many of these translations are still incomplete: you can help out on Crowdin. Added an option to pass through an input track if it matches the output codec. Updated HandBrake core to SVN 6209. Fixed crash on AAC passthrough. Fixed x264 settings getting set incorrectly when reverting from a preset with the Advanced tab. Fixed occasional crash when calculating remaining time. ...Bills Manager: Bills Manager (32227): New stable releasePowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.1.4: Added New-Folder and Remove-Folder functions (Thanks to SueH) Added NoWait parameter to Execute-Process Added the ability for Deploy-Application.exe to point to a different .ps1 file by specifying it on the command-line Added checks to Deploy-Application.exe to verify the AppDeployToolkit folder exists Added PSAppDeployToolkit icon to Deploy-Application.exe Fixed issue where hang could occur if file version was null when using Get-FileVersion Improved exception handling and loggin...Three-Dimensional Maneuver Gear for Minecraft: TDMG 1.1.1.1 for 1.7.2: 1.7.2??? ?????????ID?????? ?????jar?????CS-Script Source: Release v3.8.1: Improved ConfigConsole AdvancedShell extensions support cs-script.7z - CS-Script Suite (binaries, documentation, samples) cs-script.ExtensionPack.7z - CS-Script Extension Pack (additional binaries and samples) cs-scriptDocs.7z - CS-Script DocumentationPapercut: Papercut v3.0.0.0: Papercut has switched to semantic versioning! That means you will have to uninstall old "clickonce" versions to get the latest as it will see it as an older version. Latest Has Tons of New Features: Modern UI MVVM Architecture Watch Directories for New Messages Optional Backend Papercut Service Load on Windows Startup Attachments/Mime SectionsExperfwiz (Exchange Performance Data Collection tool): Experfwiz 1.3.8: List of updates in 1.3.8 Added support for Windows 2012 & 2012 R2 (for future use) Added support for Exchange 2013 Full is now enabled by default. To disable full mode, use 'nofull'. Exchange 2013 requires full. Added "\Processor Information()\" counters to Exchange 2010 full Blocked Exmon execution on Exchange 2013BugNET Issue Tracker: BugNET 1.6: Version 1.6 is a major upgrade to the latest frameworks and components by Microsoft. It includes a major UI overhaul using the bootstrap framework to have a modern, mobile friendly and easily customized layout. Upgrade to .NET 4.5 ASP.NET social auth Add script bundling and optimization Improvements for mobile devices Bootstrap (UI overhaul) Rewritten / friendly URL's Please read our release notes for BugNET 1.6: http://blog.bugnetproject.com/2014/06/08/bugnet-1-6-and-bugnet-pro-1...SFDL.NET: SFDL.NET (2.2.9.3): Changelog: Retry Bugfix (Error Counter wurde nicht korrekt zurückgesetzt) Neue Einstellung: Retry Wartezeit ist nun Einstellbarbabelua: 1.5.7.0: V1.5.7.0 - 2014.6.6Stability improvement: use "lua scripts folder" as lua search path when debugging;SEToolbox: SEToolbox 01.033.007 Release 1: Fixed breaking changes in Space Engineers in latest update. Installation of this version will replace older version.Virto Commerce Enterprise Open Source eCommerce Platform (asp.net mvc): Virto Commerce 1.10: Virto Commerce Community Edition version 1.10. To install the SDK package, please refer to SDK getting started documentation To configure source code package, please refer to Source code getting started documentation This release includes bug fixes and improvements (including Commerce Manager localization and https support). More details about this release can be found on our blog at http://blog.virtocommerce.com.NPOI: NPOI 2.1: Assembly Version: 2.1.0 New Features a. XSSFSheet.CopySheet b. Excel2Html for XSSF c. insert picture in word 2007 d. Implement IfError function in formula engine Bug Fixes a. fix conditional formatting issue b. fix ctFont order issue c. fix vertical alignment issue in XSSF d. add IndexedColors to NPOI.SS.UserModel e. fix decimal point issue in non-English culture f. fix SetMargin issue in XSSF g.fix multiple images insert issue in XSSF h.fix rich text style missing issue in XSSF i. fix cell...51Degrees - Device Detection and Redirection: 3.1.2.3: Version 3.1 HighlightsDevice detection algorithm is over 100 times faster. Regular expressions and levenshtein distance calculations are no longer used. The device detection algorithm performance is no longer limited by the number of device combinations contained in the dataset. Two modes of operation are available: Memory – the detection data set is loaded into memory and there is no continuous connection to the source data file. Slower initialisation time but faster detection performanc...CS-Script for Notepad++ (C# intellisense and code execution): Release v1.0.27.0: CodeMap now indicates the type name for all members Implemented running scripts 'as administrator'. Just add '//css_npp asadmin' to the script and run it as usual. 'Prepare script for distribution' now aggregates script dependency assemblies. Various improvements in CodeSnipptet, Autcompletion and MethodInfo interactions with each other. Added printing line number for the entries in CodeMap (subject of configuration value) Improved debugging step indication for classless scripts ...ClosedXML - The easy way to OpenXML: ClosedXML 0.72.3: 70426e13c415 ClosedXML for .Net 4.0 now uses Open XML SDK 2.5 b9ef53a6654f Merge branch 'master' of https://git01.codeplex.com/forks/vbjay/closedxml 727714e86416 Fix range.Merge(Boolean) for .Net 3.5 eb1ed478e50e Make public range.Merge(Boolean checkIntersects) 6284cf3c3991 More performance improvements when saving.New ProjectsAge of Visual: Proyecto que representa un juego de estrategiaAliexpress: Aliexpress Bell Open Imaging package: Bell Imaging package is an advanced and open source imaging libary. You can use it's code or various actions of editing, viewing and processing images.BizTalk Benchmark Analyzer: Benchmark any application and analyze the results to enable a better result when performance optimizing your solution.CheckName: This is a CheckNameDelsjömotet: Code for Windows Phone 8 application that will tell commuters of Västtrafik the next trip from and to Delsjömotet outside Gothenburg.EasyTest: This is a Webdriver Framework for creating enterprise level UI test suites. FIM Workflow Library: The FIM Workflow Library is a collection of custom FIM workflow activitiesjwkjReport: jwkjReport DesingerLF3Proj: project for lf OLEDB Wrapper for Excel and Textfiles: this project is for accessing excel and write values in excel it is just a wrapper for accessing excel using SQLPoshAsyncJob: Provides an alternative to PSjobs with greater performance and less overhead to run commands in the background, freeing up the console.proxydelivery: my proxy deliverySlingshot: Pending...Speech Synthesizer Bee .NetMF Driver: ????????Speech Synthesizer Bee???????.net micro framework???????; ??SYN6288????????; ???????netduino plus 2,?????.net micro frame??????-??????【??】: ?????????????????,??????????、??????,??????????、????、????、???????。?????-?????【??】: ?????????????????????,????????,??????????,?????,????? ,????????!?????-?????【??】: ?????????????????????,???????????????,???????,?????,?????,????? !!!??????-??????【??】: ????????????????、????、????、??????、????、????????,????????、?????????,?????。??????-??????【??】: ?????????????????,?????????????。????????????,???????,???????,?????,?????。????-????【??】: ????????????????:?????? ???? ??????,???????,??????,???????。?????-?????【??】: ???????????,????,??????????? ???? ???? ?????????,???,??,??????????-?????【??】: ?????????????????????????,???????????,????????,?????????????????????。???????-???????【??】: ?????????????????????,????????????????,????????????????,??????！???????-???????【??】: ???????????????????????,????“???????,???????”?????,????????????！?????-?????【??】: ????????????????,??????????????、???????、???????、???????、?????！??????-??????【??】: ????????????????,????,????,??????,????“????、????、????、????”????????,????????????-??????【??】: ????????????????????,????????:??、??、???,?????????????????????!??????-??????【??】: ??????????????????????????,???????????????,????????????????。??????-??????【??】: ???????????????,?????????????。?????????????,?????????,???????。??????-??????【??】: ??????????????????????????????、??????????????,??????????????。????-????【??】: ????????????:????,????,????,???????,????????,??????:????????,?????!????-????【??】: ???????????????"????,????"???,????????????????????????,??????????????。??????-??????【??】: ????????????????????,????????????,?????????????????,??????,????????!??????-??????【??】: ????????????????,???????、???????????,????????,????,?????????,??????,??????!?????-?????【??】: ???????????????????,????:????,????,????,??????,?????,???????????????!?????-?????【??】: ?????????????????,???????、????、????、??????、???????,??????,???????????。?????-?????【??】: ???????,??????,?????????????????????,???????????????????????。??????-??????【??】: ??????????????????,????????,??????????????,?????????,????,????,??????。??????-??????【??】: ??????????????、?????????,?????????,????,????????,????????????????!????-????【??】: ????????????????,???????????,??????????????,??????????，??????????????！?????-?????【??】: ?????????????????,????(??)????????，??????，????，???，????，???????!?????-?????【??】: ?????????????????????????,?????????,??????????,????????,?????!?????-?????【??】: ??????????????,???????????????,?????????????。??????-??????【??】: ??????????????????????,???????????????,????????????????????!?????-?????【??】: ?????????????????、????,??100%????,??????,????????????,???????????!?????-?????【??】: ???????????????????,??????????,????????、????,??????????,??????????。??????-??????【??】: ????????????、???、??、??????????????????????????????,????????????????!????-????【??】: ??????????????,????,????,??????,????“????、????、????、????”????????,??????.?????-?????【??】: ???????????????????,????????:??、??、???,?????????????????????!?????-?????【??】: ???????????????8?，????????,????????,??????????,?????,????? ,????????!??????-??????【??】: ?????????????????????????????、????、????、???????????,????,????!?????-?????【??】: ???????????????6?,???????????????????????????,??????????????,?????????！?????-?????【??】: ????????????、??????????????????,????????,?????,??????,????,????,????!??????-??????【??】: ????????????????????????、??????,????、?????、????， ?????????，?????????????！??????-??????【??】: ??????????????????、????、??????、????????,????????????,???????????！??????-??????【??】: ??????????????????????????????,???????????????????????,???????。????-????【??】: ???????????????????、????、????、??????、???????,??????、??????。????-????【??】: ?????????????、????、????、??????、????、???????,?????,?????????!??????-??????【??】: ????????????????,?????????????? ??。????????、????、????、?????????? ???????。??????-??????【??】: ??????????????????????????,????,????,??????????。???????????????,??,??,??????????,??????...????-????【??】: ???????????????????????????,??????????,????,????,?????????、??????,??????。?????-?????【??】: ??????????????????????:????、????、??????????????,????????。????????!?????-?????【??】: ??????????????????,?????????????,????,?????????,?????????????,?????,?????!?????-?????【??】: ????????????????,???????????????。???????????,??????:????、????、???????！??????-??????【??】: ????????????????????,?????????????????????,?????,????,?????????????-??????【??】: ??????????????????,??:??????,????,????,????,?????,??????????????.????-????【??】: ??????????????、??????、????、?????、?????!????,????????????????!????。?????-?????【??】: ???????????????????,?????????????,???????????.????????????,????????????!?????-?????【??】: ????????????????,???????????????。?????????????,???????,?????????。

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• Data binding in web UI frameworks, what's the deal?

  - by c-smile

  I believe that most of modern Web frameworks that pretend to be MVC ones also has a notion of data binding in one form or another. Examples: AngularJS, EmberJS, KnockoutJS, etc. I am assuming that "data binding" is a declarative definition (oxymoron, no?) of live link between data (a.k.a. model) and its representation (a.k.a. view). With some transformers in between (a.k.a. controllers). I understand why declarativeness is kind of appealing but also understand that as usual it comes with the price. In particular: 1. Live binding is quite heavy, either with dirty watch (high CPU consumption) or with Object.observe() (high memory consumption with high CPU load in some scenarios). 2. There is a "frame" part in the framework word, means there are some boundaries/limits that can be hard to overcome if you need slightly more than it was designed for. Quite usual time split: 90% of features are made in 10% of project time. But 10% rest take 90% of project time. I suspect (a.k.a. educated guess) that those MVC things are not helping to implement more functionality in less time... If so their usage motivation is not quite clear. As an example: last week wanted to find virtual list idea/solution. Found one in vanilla JavaScript that is 120 LOC. Implementation of the same but in AngualrJS is about 420 LOC. Most of the code there seems like a fight with the framework itself... So is my question: what benefits that MVC stuff or data binding give us? Is it just a buzzword popular among project managers or they give us something useful. If later one then what exactly?

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• How to diagnose network speed drops

  - by Luis Alvarado

  Here is the image of System Monitor first: The graph shows the cycle the connection goes through. After 10 to 15 seconds it drops to 0 KB/S, then goes up to the Max speed (120 KB/S) then it repeats. dmesg shows the following during that time: [ 6066.757211] wlan0: send auth to 00:26:5a:b5:05:7b (try 1/3) [ 6066.804405] wlan0: authenticated [ 6066.804578] rt2800pci 0000:02:01.0 wlan0: disabling HT/VHT due to WEP/TKIP use [ 6066.805016] wlan0: associate with 00:26:5a:b5:05:7b (try 1/3) [ 6066.809218] wlan0: RX AssocResp from 00:26:5a:b5:05:7b (capab=0x431 status=0 aid=1) [ 6066.809581] wlan0: associated [ 6066.810203] bridge-eth0: disabling the bridge on dev down [ 6066.810239] bridge-eth0: down [ 6066.810254] bridge-eth0: detached [ 6066.810309] /dev/vmnet: open called by PID 1679 (vmnet-bridge) [ 6066.810322] /dev/vmnet: hub 0 does not exist, allocating memory. [ 6066.810355] /dev/vmnet: port on hub 0 successfully opened [ 6066.810366] bridge-wlan0: device is wireless, enabling SMAC [ 6066.810369] bridge-wlan0: up [ 6066.810372] bridge-wlan0: attached [ 6067.010285] userif-2: sent link down event. [ 6067.010290] userif-2: sent link up event. This also repeats with Wired or Wireless connections. How can I diagnose this changes in the network efficiently.

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