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• What do you think of this iterator syntax?

  - by ChaosPandion

  I've been working on an ECMAScript dialect for quite some time now and have reached a point where I am comfortable adding new language features. I would love to hear some thoughts and suggestions on the syntax. Example iterator Numbers { yield 1; yield 2; yield 3; if (true) { yield break; } yield continue iterator { yield 4; yield 5; yield 6; }; } Syntax IteratorDeclaration:     iterator  Identifier  {  IteratorBody  } IteratorExpression:     iterator  Identifieropt  {  IteratorBody  } IteratorBody:     IteratorStatementsopt IteratorStatements:     IteratorStatement IteratorStatementsopt IteratorStatement:     Statement but not one of BreakStatement ContinueStatement ReturnStatement     YieldStatement     YieldBreakStatement     YieldContinueStatement YieldStatement:     yield  Expression  ; YieldBreakStatement:     yield  break  ; YieldContinueStatement:     yield  continue  Expression  ;

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• What is an elegant way to install non-repository software in 12.04?

  - by Tomas

  Perhaps I missed something when Canonical removed the "Create launcher" option from the right click menu, because I've really been missing that little guy. For me, it was the preferred way to install software that comes not in a .deb, but in a tar.gz, for example. (Note: in that tar.gz I have a folder with the compiled files, I'm NOT compiling from source) I just downloaded the new Eclipse IDE and extracted the tar.gz to my /usr folder. Now, I'd like to add it to my desktop and dash so it can be started easily. Intuitively I would right click the desktop and create a launcher. After this I'd copy the .desktop to /usr/share/applications. However, creating a launcher is not possible. My question: How would you install an already compiled tar.gz that you have downloaded from the internet? Below are a few things I've seen, but these are all more time-consuming than the right click option. If you have any better ideas, please let me know. Thanks! Manual copy & create a .desktop file: manually Simply extract the archive to /usr. Create a new text file, adding something along the lines of the code block below: [Desktop Entry] Version=1.0 Type=Application Terminal=false Exec="/usr/local/eclipse42/eclipse" Name="Eclipse 4.2" Icon=/home/tomas/icons/eclipse.svg Rename this file to eclipse42.desktop and make it executable. Then copy this to /usr/share/applications. Manually copy & create a .desktop file: GUI fossfreedom has elaborated on this in How can I create launchers on my desktop? Basically it involves the command: gnome-desktop-item-edit --create-new ~/Desktop After creating the launcher, copy it to /usr/share/applications.

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• Managing user privileges, best practices [on hold]

  - by Loïc N.

  I'm am new to web development. I'm creating a website where different user can have different privileges, such as creating/editing/deleting a news, or adding/editing/deleting whatever kind of content on the website. I started by creating a "user type" that would indicate the user's privileges (such as "user", "newser", "moderator", "admin", and so on), but I quickly started noticing issues that made me think that this might be a naive approach to this issue. What if I want to give a regular user the right to edit a news (for whatever reason)? Then the user would be half "user", half "newser". But the system I use can only handle one user-type. So what would be the best practice here? I was thinking of removing the concept of roles (or "user-types" such as newser) and only have the concept of "privilege", where every user could have zero to many privileges. So, to re-use the above example, if I wanted a user to have the right to edit some news, I would only have to give him a "edit news" privilege. Is this the way to go?

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• How to I get a rotated sprite to move left or right?

  - by rphello101

  Using Java/Slick 2D, I'm using the mouse to rotate a sprite on the screen and the directional keys (in this case, WASD) to move the spite. Forwards and backwards is easy, just position += cos(ang)*speed or position -= cos(ang)*speed. But how do I get the sprite to move left or right? I'm thinking it has something to do with adding 90 degrees to the angle or something. Any ideas? Rotation code: int mX = Mouse.getX(); int mY = HEIGHT - Mouse.getY(); int pX = sprite.x+sprite.image.getWidth()/2; int pY = sprite.y+sprite.image.getHeight()/2; double mAng; if(mX!=pX){ mAng = Math.toDegrees(Math.atan2(mY - pY, mX - pX)); if(mAng==0 && mX<=pX) mAng=180; } else{ if(mY>pY) mAng=90; else mAng=270; } sprite.angle = mAng; sprite.image.setRotation((float) mAng); And the movement code (delta is change in time): Input input = gc.getInput(); Vector2f direction = new Vector2f(); Vector2f velocity = new Vector2f(); direction.x = (float) Math.cos(Math.toRadians(sprite.angle)); direction.y = (float) Math.sin(Math.toRadians(sprite.angle)); if(direction.length()>0) direction = direction.normalise(); //On a separate note, what does this line of code do? velocity.x = (float) (direction.x * sprite.moveSpeed); velocity.y = (float) (direction.y * sprite.moveSpeed); if(input.isKeyDown(sprite.up)){ sprite.x += velocity.x*delta; sprite.y += velocity.y*delta; }if (input.isKeyDown(sprite.down)){ sprite.x -= velocity.x*delta; sprite.y -= velocity.y*delta; }if (input.isKeyDown(sprite.left)){ //??? }if (input.isKeyDown(sprite.right)){ //??? }

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• Webcast: Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory

  - by Etienne Remillon

  Interested in upgrading from DSEE to OUD? Register to learn from one customer. Oracle Security Solutions Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory Oracle Unified Directory (OUD) is the world’s first unified directory solution with highly integrated storage, synchronization, and proxy capabilities. These capabilities help meet the evolving needs of enterprise architectures. OUD customers can lower the cost of administration and ownership by maintaining a single directory for all of their enterprise needs, while also simplifying their enterprise architecture. OUD is optimized for mobile and cloud computing environments where elastic scalability becomes critical as service providers need a solution that can scale by dynamically adding more directory instances without re-architecting their solutions to support exponential business growth. Join us for this webcast and you will: Learn from one customer that has successfully upgraded to the new platform See what technology and business drivers influenced the upgrade Hear about the benefits of OUD’s elastic scalability and unparalleled performance Get additional information and resources for planning an upgrade Register here for the webcast. REGISTER NOW Register now for this complimentary webcast: Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory Thursday September 13, 2012 10:00 a.m. PT / 1:00 p.m. ET

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• Using HTML5 Today part 2&ndash;Fixing Semantic tags with a Shiv

  - by Steve Albers

  Semantic elements and the Shiv! This is the second entry in the series of demos from the “Using HTML5 Today” talk. For the definitive discussion on unknown elements and the HTML5 Shiv check out Mark Pilgrim’s Dive Into HTML5 online book at http://diveintohtml5.info/semantics.html#unknown-elements Semantic tags increase the meaning and maintainability of your markup, help make your page more computer-readable, and can even provide opportunities for libraries that are written to automagically enhance content using standard tags like <nav>, <header>,  or <footer>. Legacy IE issues However, new HTML5 tags get mangled in IE browsers prior to version 9.  To see this in action, consider this bit of HTML code which includes the new <article> and <header> elements: Viewing this page using the IE9 developer tools (F12) we see that the browser correctly models the hierarchy of tags listed above: But if we switch to IE8 Browser Mode in developer tools things go bad: Did you know that a closing tag could close itself?? The browser loses the hierarchy & closes all of the new tags.  The new tags become unusable and the page structure falls apart. Additionally block-level elements lose their block status, appearing as inline.    The Fix (good) The block-level issue can be resolved by using CSS styling.  Below we set the article, header, and footer tags as block tags. article, header, footer {display:block;} You can avoid the unknown element issue by creating a version of the element in JavaScript before the actual HTML5 tag appears on the page: <script> document.createElement("article"); document.createElement("header"); document.createElement("footer"); </script> The Fix (better) Rather than adding your own JS you can take advantage of a standard JS library such as Remy Sharp’s HTML5 Shiv at http://code.google.com/p/html5shiv/.  By default the Modernizr library includes HTML5 Shiv, so you don’t need to include the shiv code separately if you are using Modernizr.

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• Strange mesh import problem with Assimp and OpenGL

  - by Morgan

  Using the assimp library for importing 3D data into an OpenGL application. I get some strange problems regarding indexing of the vertices: If I use the following code for importing vertex indices: for (unsigned int t = 0; t < mesh->mNumFaces; ++t) { const struct aiFace * face = &mesh->mFaces[t]; if (face->mNumIndices == 3) { indices->push_back(face->mIndices[0]); indices->push_back(face->mIndices[1]); indices->push_back(face->mIndices[2]); } } I get the following result: Instead, if I use the following code: for(int k = 0; k < 2 ; k++) { for (unsigned int t = 0; t < mesh->mNumFaces; ++t) { const struct aiFace * face = &mesh->mFaces[t]; if (face->mNumIndices == 3) { indices->push_back(face->mIndices[0]); indices->push_back(face->mIndices[1]); indices->push_back(face->mIndices[2]); } } } I get the correct result: Hence adding the indices twice, renders the correct result? The OpenGL buffer is populated, like so: glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices->size() * sizeof(unsigned int), indices->data(), GL_STATIC_DRAW); And rendered as follows: glDrawElements(GL_TRIANGLES, vertexCount*3, GL_UNSIGNED_INT, indices->data());

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• Picasa installs but is missing in the menu

  - by Swapnil Narendra

  Acer Aspire One Netbook Running Ubuntu Netbook Remix 10.10 (freshly installed) 1 GB Ram 150 GM HDD Space I am trying to install Picasa and when I do, it runs its course telling me that it has been installed. But when I try to look for Picasa to run it, it didnt show in the menu anywhere. I am unable to find Picasa on my system and it says that it has been installed already when I try to reinstall it. I have tried a few things; looked for the key: wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - .. and then added it. tried the following commands after adding Picasa to my source list: sudo apt-get upgrade sudo apt-get install picasa and here is what I got: swapnil@iva-swapo-netbook:~$ sudo apt-get install picasa Reading package lists... Done Building dependency tree Reading state information... Done picasa is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. and when I tried to look for Picasa again.. I couldnt find it. So I am unable to install Picasa on my system. Please help. (I am also running this thread on ubuntu forums and havent got the solution yet so I am now here) tried Jorge's solution and it brought Picasa immediately, however I am unable to keep it in the launcher. There is no such option. All I can see is only 2 options: 1. Wine 2. Quit Still need help to keep it in the menu/launcher !

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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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• How to Fix this specific Google "Fetch as Googlebot" error appearing on my Webmaster Tools?

  - by UXdesigner

  Good day, I'm currently finding out why I have lost all of my website's rank in google. I don't even appear in google results by the domain. But other sites do link me and they appear in the google results. I think it's all about leaving my site two months alone and finding out I had 20k in comment spam, which I completely deleted and fixed with filters and adding a new Disqus comment service. Thing is, I added my site to Google Webmaster Tools and I'm finding out several awful things. For example, when I click in Google Fetch As GoogleBot. I receive this error message below in response to my request. And I don't even know what's the real problem and how to fix it. I simply don't get it. This is what appears: Date: Wednesday, July 20, 2011 9:43:35 AM PDT Googlebot Type: Web Download Time (in milliseconds): 55 HTTP/1.1 403 Forbidden Date: Wed, 20 Jul 2011 16:43:36 GMT Server: Apache Vary: Accept-Encoding Content-Encoding: gzip Content-Length: 248 Keep-Alive: timeout=2, max=100 Connection: Keep-Alive Content-Type: text/html; charset=iso-8859-1 403 Forbidden Forbidden You don't have permission to access / on this server. Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request. Do you guys know anything about this problem ? I need to have Google crawl my site again. I used to have a really nice google result in the past three years. Now, there's nothing. thanks,

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• Issue 55 - Skin Object Tokens, Optimized Control Panel, OWS Validation and Security, RAD

  April 2010 Welcome to Issue 55 of DNN Creative Magazine In this issue we focus on the new Skin Object token method introduced in DotNetNuke 5 for adding tokens into a DotNetNuke skin. A Skin Object Token is a web user control which covers skin elements such as the logo, menu, search, login links, date, copyright, languages, links, banners, privacy, terms of use, etc. Following this we demonstrate how to install and use two Advanced DotNetNuke Admin Control Panels which are available for free from Oliver Hine. These control panels provide an optimized version of the admin control panel to improve performance and page load times, as well as a ribbon bar control panel which adds additional features. Next, we continue the Open Web Studio tutorials, this month we demonstrate some very advanced techniques for building a car parts application in Open Web Studio. Throughout the tutorial we cover form input, validation, how to use dependant drop down lists, populating checkbox lists and introduce a new concept of data level security. Data level security allows you to control which data a user can access within a module. To finish, we have part five of the "How to Build a News Application with DotNetMushroom Rapid Application Developer (RAD)" article, where we demonstrate how to implement paging. This issue comes complete with 14 videos. Skinning: Skin Object Tokens for DotNetNuke 5 (8 videos - 64mins) Free Module: Advanced Optimized Control Panel by Oliver Hine (1 video - 11mins) Module Development Series: Form Validation, Dependant Drop Downs and Data Level Security in OWS (5 videos - 44mins) How to Implement Paging with DotNetMushroom RAD View issue 55 to download all of the videos in one zip file DNN Creative Magazine for DotNetNuke Web Designers Covering DotNetNuke module video reviews, video tutorials, mp3 interviews, resources and web design tips for working with DotNetNuke. In 55 issues we have created 563 videos!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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• Guide.BeginShowMessageBox wrapper

  - by Daniel Moth

  While coding for Windows Phone 7 using Silverlight, I was really disappointed with the built-in MessageBox class, so I found an alternative. My disappointment was the fact that: Display of the messagebox causes the phone to vibrate (!) Display of the messagebox causes the phone to make an annoying sound. You can only have "ok" and "cancel" buttons (no other button captions). I was using the messagebox something like this: // Produces unwanted sound and vibration. // ...plus no customization of button captions. if (MessageBox.Show("my message", "my caption", MessageBoxButton.OKCancel) == MessageBoxResult.OK) { // Do something Debug.WriteLine("OK"); } …and wanted to make minimal changes throughout my code to change it to this: // no sound or vibration // ...plus bonus of customizing button captions if (MyMessageBox.Show("my message", "my caption", "ok, got it", "that sucks") == MyMessageBoxResult.Button1) { // Do something Debug.WriteLine("OK"); } It turns out there is a much more powerful class in the XNA framework that delivered on my requirements (and offers even more features that I didn't need like choice of sounds and not blocking the caller): Guide.BeginShowMessageBox. You can use it simply by adding an assembly reference to Microsoft.Xna.Framework.GamerServices. I wrote a little wrapper for my needs and you can find it here (ready to enhance with your needs): MyMessageBox.cs.txt. Comments about this post welcome at the original blog.

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• Why to avoid SELECT * from tables in your Views

  - by Jeff Smith

  -- clean up any messes left over from before: if OBJECT_ID('AllTeams') is not null  drop view AllTeams go if OBJECT_ID('Teams') is not null  drop table Teams go -- sample table: create table Teams (  id int primary key,  City varchar(20),  TeamName varchar(20) ) go -- sample data: insert into Teams (id, City, TeamName ) select 1,'Boston','Red Sox' union all select 2,'New York','Yankees' go create view AllTeams as  select * from Teams go select * from AllTeams --Results: -- --id          City                 TeamName ------------- -------------------- -------------------- --1           Boston               Red Sox --2           New York             Yankees -- Now, add a new column to the Teams table: alter table Teams add League varchar(10) go -- put some data in there: update Teams set League='AL' -- run it again select * from AllTeams --Results: -- --id          City                 TeamName ------------- -------------------- -------------------- --1           Boston               Red Sox --2           New York             Yankees -- Notice that League is not displayed! -- Here's an even worse scenario, when the table gets altered in ways beyond adding columns: drop table Teams go -- recreate table putting the League column before the City: -- (i.e., simulate re-ordering and/or inserting a column) create table Teams (  id int primary key,  League varchar(10),  City varchar(20),  TeamName varchar(20) ) go -- put in some data: insert into Teams (id,League,City,TeamName) select 1,'AL','Boston','Red Sox' union all select 2,'AL','New York','Yankees' -- Now, Select again for our view: select * from AllTeams --Results: -- --id          City       TeamName ------------- ---------- -------------------- --1           AL         Boston --2           AL         New York -- The column labeled "City" in the View is actually the League, and the column labelled TeamName is actually the City! go -- clean up: drop view AllTeams drop table Teams

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• does my js replace view?

  - by Milla Well

  I am writing a web application which is based on Codeigniter and jQuery. I primarily use ajax to call my controller functions and it turned out, that there are just 4 view*.php files, because most of my contoller functions return JSON data, which is processed in my jQuery. So my actual code is divided in kind of MVCC model: Codeigniter model (db, computations) Codeigniter controller (filtering, xss-cleaning, checking permissions, call model functions) jQuery controller (callback functions) jQuery view (adding/removing classes, appending elements,... ) So I violate the paradigm of not using the echo function in my Codeiginter controller and simply call echo json_encode($result); because it doesn't make any sense to me to create a view*.php file for one loc. Especially because all the regular view*.php stuff is covered in my jQuery view. I was wondering if I am missing something out, or if there is a way to integrate this jQuery-controller in my Codeigniter. I found some words on this topic, but this seems pretty handmade. Are there some neat solutions? Does a MVCC model make sense?

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• Summary of the Solaris 11 webcast's livechat QnA session

  - by Karoly Vegh

  This is a followup post to the previous summary on the "What's new with Solaris 11 since the launch" webcast. That webcast has had a chatroom for a live Questions and Answers session running. I went through the archive of those and compiled a list of some of the (IMHO) most relevant and most frequently asked questions, I'd like to share. This is the first part, covering the QnA of Session I and II of the webcast, in a followup post we can have a look of the rest of the sessions if required - let me know in the comments. Also, should you have questions, as usual, feel free to ask those there, too.  ...and here come the answered questions:  When will Exadata be based on Solaris in place of Oracle Enterprise Linux?Exadata offers both Solaris 11 or Oracle Enterprise Linux.  The choice can be made at deployment time based on your OS needs.What are all other benefits and futures avilable in solaris 11 (cloud O.S.) compared to cloud based Red Hat Linux and Windows?suggest you check out our cloud white paper for a view of this. Also the OTN Solaris 11 page has some good articles. Here are the links:  http://www.oracle.com/technetwork/server-storage/solaris11/documentation/o11-106-sol11-cloud-501066.pdf http://www.oracle.com/technetwork/server-storage/solaris11/overview/index.htmlWill 11.1 have a more complete IPS respository for Oracle and FOSS software?Yes, we are adding additional packages to the various package repositories. Since Solaris 11 was launched, both the Oracle Solaris Studio tools as well as Oracle Solaris Cluster have been made available along with numerous new FOSS packages. We will continue to be adding additional Oracle products and open source packages in the future. Will Exadata be based on Sparc in place of intel-amd x86 in next future ?We can't publically discuss futures, but we actually have a SPARC version of Exadata today, it's called SuperCluster, this is such a powerfull multipurpose system that it actually have multiple personalities built into one system: Exadata, Exalogic, and it can be a general purpose platform if you want. Have I understood this right? Livepatching KSplice-style is coming to Solaris 11 too?We're looking at that for certain types of Solaris patches in the future.Will there be a security framework like SST/JASS for Solaris 11?We can't talk about the future projects on a public forum, but we recognize the need for SST/JASS and want to address this as soon as possible. On the other side there are a whole bunch of "best practices" that are now embedded into Solaris 11 by default, so out of the box Solaris 11 should already address part of what SST/JASS gave you. (For example we did a lot of work on improving the auditing performance so that we can now have it turned on by default). On x86 can install VirtualBox in a Zone and use that to host other OSes.Yes, this was one of the first things we made sure would work when we acquired VirtualBox when we were still Sun Microsystems. If I have a Solaris 11 Control Domain on a T-series, can I run a Solaris 10 Ldom with Solaris 8 branded containers?Yes, you can.Is Oracle Solaris free or do we need to purchase?Solaris is free, the entitlement to run it comes either with a Sun system (new or historical) or for 3rd party systems the entitlement comes with a support contract. Note that for production use you will be expected to get a support contract. If you don't want to use the Solaris system (Sun or 3rd party) for production use (i.e. development) you can get an OTN license on the Oracle Technical Network website. Will encryption and deduplication both work on a share?This should work at the same time. What approaches does Solaris use to monitor usage?There are many different tools in Solaris to monitor usage. The main ones are the "stats" (vmstat, mpstat, prstat, ...), the kstat interface, and DTrace (to get details you couldn't see before). And then there are layered tools that can interface with these tools (Ops Center, BMC, CA, Tivoli, ...) Apart little-endian, big-endian how is it easy to port Solaris applications on Sparc to x86 and vice-versa ?Very easy. Except for certain hardware specific applications (those that utilize hardware specific drivers), all of the same Oracle Solaris APIs exist for all architectures. Is IPS based patching aware of the fact that zones can reside on ZFS and move from one physical server to another ?IPS is definitely aware of zones and uses ZFS to support boot environments for non-global zones in the same way that's used for the global zone. With respect to moving a zone from one physical server to another, Solaris 11 supports to the same zone attach/deattach method that was introduced in Solaris 10. Is vnic support in Ldoms planned?This is currently being investigated for a future LDOM release. Is it possible with the new patching system to build a system later with the same patch level as a system built a few months earlier?Yes, you can choose/define exactly which version should go to the system and it will always put the same bits in place. The technical answer is that you choose the version of the "entire" package you want on the system and the rest flows from there. Is it in the plans to allow zones to add/remove zpools to running zones dynamically in future updates?Work in this area is currently under investigation. Any plans to realese Solaris 11 source code? i.e. opensolaris?We currently can't comment on publicly releasing the source code. If you need/want this access please let your Oracle account team know. What about VirtualBox and Solaris11 for virtualization?Solaris 11 works great with VirtualBox, as both a client and a host system. Will Oracle DB software eventually be supplied as IPS packages? When?We don't have a date yet but this is actively being worked on. What are the new artifacts in Oracle Solaris 11 than the previous versions?There are quite a few actually. The best start is to look at our "Evaluate Solaris 11" page, and there you also can find a Transition Guide. http://www.oracle.com/technetwork/server-storage/solaris11/overview/evaluate-1530234.html So, this seems just like RedHat's YUM environment?IPS offers certain features beyond those in YUM or other packaging systems. For example, IPS works with ZFS and Solaris Boot Environments to provide a safe environment for software lifecycle management so that changes can be reverted by switching to an older boot environment. With Zones on solaris 11, can I do paravirtualitation?The great thing about zones is you don't *need* paravirtualization. You're making the same direct kernel calls that you would outside of a zone.  It's an incredibly significant performance win over hypervisor-based virtualization. Are zones/containers officially supported to run Oracle Databases?  EBIZ?Hi Calvin, the answer is yes, here is the support matrix for DB:  http://www.oracle.com/technetwork/database/virtualizationmatrix-172995.html I've found some nasty bugs in Solaris 11 (one of which today) that have been fixed in community forks (i.e., Illumos). Will Oracle ever restart collaboration with the community?We continue to work with the community, just not as open on all projects as we did before (For example IPS is an open project) and the source of more than half of the Solaris packages is posted on our opensource websites. I can't comment on what we will do in the future. And with regards to bugs please file them through the support organization and we will get them resolved. Is zpool vdev removal on-the fly now possible ?This issue is actively being investigated although we don't have a date for when this feature will be available. Is pgstat now the official replacement for corestat ?It's intended to provide similar functionality Where are the opensource website?For Oracle Solaris, visit http://www.oracle.com/technetwork/opensource/systems-solaris-1562786.html As a cloud-scale virtualization, is it going to be easier to move zones between machines? maybe even automatic in case of a hardware failure?Hi Gashaw, we already have customers that have implemented what they refer to as "flying zones" that they can move around very easily. They use Solaris Cluster to do this. What about VMware vMotion like feature?We have secure live migration with both Logical Domains on SPARC T series systems, and with Oracle VM on x86 systems. When running Solaris 10/11 on an enterprise server with a lot of zones, what are best practises commands to show the system is running fine? (has enough hardware resources). For example CPU / Memory / I/O / system load. What are the recommended values?For Solaris 11, look into the new zonestat(1M) command that provides a great deal of information about zone utilization. In addition, there is new work underway in providing additional observability in areas such as per-zone file system I/O. Java optimizations done with Solaris 11? For X86 platforms too? Where can I find more detail about this?There is lots of work that go into optimizing Java for Oracle Solaris 10 & 11 on both SPARC and x86. See http://www.oracle.com/technetwork/articles/servers-storage-dev/solarisforjavadevelop-168642.pdf What is meant by "ZFS Shadow Migration"?It's a way to migrate data from another file system to ZFS: http://docs.oracle.com/cd/E23824_01/html/E24456/filesystem-3.html Is flash archive available with S11?Flash archive is not.  There is a procedure for disaster recovery, and we're working on a modern archive-based deployment tool for a future update.  The disaster recovery tool is here: http://www.oracle.com/technetwork/articles/servers-storage-admin/o11-091-sol-dis-recovery-489183.html  You can also use Distribution Constructor to build common golden images. Will solaris 11 be available on the ODA soon?The idea's under evaluation -- we'll share your interest with the team. What steps can be taken to ensure that breaches of security are identified quickly?There are a number of tools, including the "bart" tool and "pkg verify" to ensure that software has not been compromised.  Solaris Audit can also be used to detect unauthorized access.  You can also use Immutable Zones to protect against compromise.  There are a wide variety of security tools, and I've covered only a few. What is the relation from solaris to java 7 speed optimization?There is constant work done between the Oracle Solaris and Java teams on performance optimizations. See http://docs.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html for examples. What is the difference in the Solaris 11 installation compared to solaris 10 ? where i can find the document describing basic repository concepts ?The best place to start is: http://www.oracle.com/technetwork/server-storage/solaris11/index.html Hope you found the post useful. For questions, input, requests for the second half of the QnA, please find the comment section below.  -- charlie  

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• Client side latency when using prediction

  - by Tips48

  I've implemented Client-Side prediction into my game, where when input is received by the client, it first sends it to the server and then acts upon it just as the server will, to reduce the appearance of lag. The problem is, the server is authoritative, so when the server sends back the position of the Entity to the client, it undo's the effect of the interpolation and creates a rubber-banding effect. For example: Client sends input to server - Client reacts on input - Server receives and reacts on input - Server sends back response - Client reaction is undone due to latency between server and client To solve this, I've decided to store the game state and input every tick in the client, and then when I receive a packet from the server, get the game state from when the packet was sent and simulate the game up to the current point. My questions: Won't this cause lag? If I'm receiving 20/30 EntityPositionPackets a second, that means I have to run 20-30 simulations of the game state. How do I sync the client and server tick? Currently, I'm sending the milli-second the packet was sent by the server, but I think it's adding too much complexity instead of just sending the tick. The problem with converting it to sending the tick is that I have no guarantee that the client and server are ticking at the same rate, for example if the client is an old-end PC.

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• IdentityServer Beta 1 Refresh &amp; Windows Azure Support

  - by Your DisplayName here!

  I just uploaded two new releases to Codeplex. IdentityServer B1 refresh A number of bug fixes and streamlined extensibility interfaces. Mostly a result of adding the Windows Azure support. Nothing has changed with regards to setup. Make sure you watch the intro video on the Codeplex site. IdentityServer B1 (Windows Azure Edition) I have now implemented all repositories for Windows Azure backed data storage. The default setup assumes you use the ASP.NET SQL membership provider database in SQL Azure and Table Storage for relying party, client certificates and delegation settings. The setup is simple: Upload your SSL/signing certificate via the portal Adjust the .cscfg file – you need to insert your storage account, certificate thumbprint and distinguished name There is a setup tool that can automatically insert the certificate distinguished names into your config file Adjust the connection string for the membership database in WebSite\configuration\connectionString.config Deploy Feedback Feature-wise this looks like the V1 release to me. It would be great if you could give me feedback, when you find a bug etc. – especially: Do the built-in repository implementations work for you (both on-premise and Azure)? Are the repository interfaces enough to add you own data store or feature?

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• Brand New Annotations Support

  - by Ondrej Brejla

  Hi all! Today we would like to introduce you our brand new annotation support for NetBeans 7.2. The first thing which is different is the look of annotations in code completion. As you can see, there is a new annotation icon and an annotation type. Because we have a lot of modules with their own annotations, we differ them in code completion window by their type. We support annotations for: ApiGen (legacy PHPDoc annotations), PHPUnit, Doctrine 2 (ORM and ODM) and Symfony 2. Every annotation can be associated with some context. We recognize four of them: function, class/interface (type), method and field. It means that you will get just proper annotations for your class field as well as your global function. Do you have your own annotations? Or do you simply miss some? There is nothing hard to add it in there. We have a simple UI for adding your custom annotations! It's in Tools -> Options -> PHP -> Annotations. Here you can simply add, edit or delete your annotations. When you try to create new one, all fields are prefilled by some default values. So you really don't have to remember "how to use that crazy freemarker syntax". If you are satisfied with your new annotation, you can see it in a code completion window among other annotations. As you can see it has its own "Custom" type. That's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (component php, subcomponent Editor). Thanks.

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• Big Data Appliance X4-2 Release Announcement

  - by Jean-Pierre Dijcks

  Today we are announcing the release of the 3rd generation Big Data Appliance. Read the Press Release here. Software Focus The focus for this 3rd generation of Big Data Appliance is: Comprehensive and Open - Big Data Appliance now includes all Cloudera Software, including Back-up and Disaster Recovery (BDR), Search, Impala, Navigator as well as the previously included components (like CDH, HBase and Cloudera Manager) and Oracle NoSQL Database (CE or EE). Lower TCO then DIY Hadoop Systems Simplified Operations while providing an open platform for the organization Comprehensive security including the new Audit Vault and Database Firewall software, Apache Sentry and Kerberos configured out-of-the-box Hardware Update A good place to start is to quickly review the hardware differences (no price changes!). On a per node basis the following is a comparison between old and new (X3-2) hardware: Big Data Appliance X3-2 Big Data Appliance X4-2 CPU 2 x 8-Core Intel® Xeon® E5-2660 (2.2 GHz) 2 x 8-Core Intel® Xeon® E5-2650 V2 (2.6 GHz) Memory 64GB 64GB Disk 12 x 3TB High Capacity SAS 12 x 4TB High Capacity SAS InfiniBand 40Gb/sec 40Gb/sec Ethernet 10Gb/sec 10Gb/sec For all the details on the environmentals and other useful information, review the data sheet for Big Data Appliance X4-2. The larger disks give BDA X4-2 33% more capacity over the previous generation while adding faster CPUs. Memory for BDA is expandable to 512 GB per node and can be done on a per-node basis, for example for NameNodes or for HBase region servers, or for NoSQL Database nodes. Software Details More details in terms of software and the current versions (note BDA follows a three monthly update cycle for Cloudera and other software): Big Data Appliance 2.2 Software Stack Big Data Appliance 2.3 Software Stack Linux Oracle Linux 5.8 with UEK 1 Oracle Linux 6.4 with UEK 2 JDK JDK 6 JDK 7 Cloudera CDH CDH 4.3 CDH 4.4 Cloudera Manager CM 4.6 CM 4.7 And like we said at the beginning it is important to understand that all other Cloudera components are now included in the price of Oracle Big Data Appliance. They are fully supported by Oracle and available for all BDA customers. For more information: Big Data Appliance Data Sheet Big Data Connectors Data Sheet Oracle NoSQL Database Data Sheet (CE | EE) Oracle Advanced Analytics Data Sheet

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• The internal storage of a DATETIMEOFFSET value

  - by Peter Larsson

  Today I went for investigating the internal storage of DATETIME2 datatype. What I found out was that for a datetime2 value with precision 0 (seconds only), SQL Server need 6 bytes to represent the value, but stores 7 bytes. This is because SQL Server add one byte that holds the precision for the datetime2 value. Start with this very simple repro declare    @now datetimeoffset(7) = '2010-12-15 21:04:03.6934231 +03:30'   select     cast(cast(@now as datetimeoffset(0)) as binary(9)),            cast(cast(@now as datetimeoffset(1)) as binary(9)),            cast(cast(@now as datetimeoffset(2)) as binary(9)),            cast(cast(@now as datetimeoffset(3)) as binary(10)),            cast(cast(@now as datetimeoffset(4)) as binary(10)),            cast(cast(@now as datetimeoffset(5)) as binary(11)),            cast(cast(@now as datetimeoffset(6)) as binary(11)),            cast(cast(@now as datetimeoffset(7)) as binary(11)) Now we are going to copy and paste these binary values and investigate which value is representing what time part. Prefix  Ticks       Ticks         Days    Days    Suffix  Suffix  Original value ------  ----------  ------------  ------  ------  ------  ------  ------------------------ 0x  00  0CF700             63244  A8330B  734120  D200       210  0x000CF700A8330BD200 0x  01  75A609            632437  A8330B  734120  D200       210 0x0175A609A8330BD200 0x  02  918060           6324369  A8330B  734120  D200       210  0x02918060A8330BD200 0x  03  AD05C503        63243693  A8330B  734120  D200       210  0x03AD05C503A8330BD200 0x  04  C638B225       632502470  A8330B  734120  D200       210  0x04C638B225A8330BD200 0x  05  BE37F67801    6324369342  A8330B  734120  D200       210  0x05BE37F67801A8330BD200 0x  06  6F2D9EB90E   63243693423  A8330B  734120  D200       210  0x066F2D9EB90EA8330BD200 0x  07  57C62D4093  632436934231  A8330B  734120  D200       210  0x0757C62D4093A8330BD200 Let us use the following color schema Red - Prefix Green - Time part Blue - Day part Purple - UTC offset What you can see is that the date part is equal in all cases, which makes sense since the precision doesn't affect the datepart. If you add 63244 seconds to midnight, you get 17:34:04, which is the correct UTC time. So what is stored is the UTC time and the local time can be found by adding "utc offset" minutes. And if you look at it, it makes perfect sense that each following value is 10 times greater when the precision is increased one step too. //Peter

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• How can I justify software testing to management?

  - by Nate

  I work for a small company (less than 200 employees) whose software group only makes up a small part of our staff (4 employees, occasionally with a few contractors). The four of us have been making strides in transitioning to better practices, and one of the next logical steps is to improve our testing. As anyone who has done any meaningful tests knows, testing takes a lot of time - and at my company, it takes too much time to justify to management, so we generally do what little we do on the sly. I don't think this is serving us well, as we keep coming up against otherwise avoidable problems when we ship under-tested software. I would like to be able to come to management with a justification for hiring a dedicated software test engineer (someone who can both write automated tests and perform manual ones). Are there any good published studies that show the benefits of adding such a position to a small company? Where can I find information about costs associated with the position? I plan on doing a little number crunching on our own history, but having some external sources to point to would help bolster my case.

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• Best practices for caching search queries

  - by David Esteves

  I am trying to improve performance of my ASP.net Web Api by adding a data cache but I am not sure how exactly to go about it as it seems to be more complex than most caching scenarios. An example is I have a table of Locations and an api to retrieve locations via search, for an autocomplete. /api/location/Londo and the query would be something like SELECT * FROM Locations WHERE Name like 'Londo%' These locations change very infrequently so I would like to cache them to prevent trips to the database for no real reason and improve the response time. Looking at caching options I am using the Windows Azure Appfabric system, the problem is it's just a key/value cache. Since I can only retrieve items based on keys I couldn't actually use it for this scenario as far as Im aware. Is what I am trying to do bad use of a caching system? Should I try looking into NoSql DB which could possibly run as a cache for something like this to improve performance? Should I just cache the entire table/collection in a single key with a specific data structure which could assist with the searching and then do the search upon retrieval of the data?

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• Are there good resources for leading documentation for an existing software product having none?

  - by Ben Rose

  Hello. I'm a software developer at a technology company. I have been tasked with leading the documentation effort for the product I work on, both internal to developers as well as spilling over into facilitating the business side of requirements documentation. This internal product has been around for at least 6 years. One challenge is that this software application has no form of documentation other than some small, outdated pieces here and there. There are comments in the code, but they are technical and do not convey any over-arching behavior (even on technical side). As a consequence of having little to no documentation, this product is often unnecessarily complex under the covers adding to the challenge. We are very limited on time that will be given to us to work on documentation. Another thing about me is that I've displayed some ability in writing/communication around the office, but I'm not coming from any sort of documentation or formal writing background (beyond my academic career). Please share your advise or recommend resources, book/website/forum/whatever, for helping me come up with a plan with milestones, best practices, task delegation, templates, buy-in, etc. I'm hoping for a resource targeting or giving special mention of introducing good documentation on existing projects where there previously was none. I would be very grateful for your responses. Ben

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• Web to Print system - which client side technology should I use

  - by mr null

  I'm getting started to develop Web to Print system. My main concern is which client-side techology should I use: jQuery/CSS Flex/ActionScript or something else? For now, idea is that user/customer choose Product eg: Business card Attributes: Dimensions,Paper type, ... etc Template or blank Adjust product (editor) Preview & order Output should be PDF 300dpi. My main issue is: adding/adjusting text in editor. (font size, font family...). Because application should be cross browser. And I think that 10px Arial can't be the same in Firefox 5 and IE 8. It must be pixel perfect in every browser. If somebody order $100 of business cards, and text is different that he/she saw when ordering - that is a big problem. So, Flash platform should be the answer. But, as I see it's dying technology, 2012 is here - HTML5 is replacing Flash rapidly. I hope that you understand me, so every guideline or few smart words would be very appreciating.

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• Load order in XNA?

  - by marc wellman

  I am wondering whether the is a mechanism to manually control the call-order of void Game.LoadContent() as it is the case with void Game.Draw(GameTime gt) by setting int DrawableGameComponent.DrawOrder ? except the order that results from adding components to the Game.Components container and maybe there exists something similar with Game.Update(GameTime gt) ? UPDATE To exemplify my issue consider you have several game components which do depends to each other regarding their instantiation. All are inherited from DrawableGameComponent. Now suppose that in one of these components you are loading a Model from the games content pipeline and add it to some static container in order to provide access to it for other game components. public override LoadContent() { // ... Model m = _contentManager.Load<Model>(@"content/myModel"); // GameComponents is a static class with an accessible list where game components reside. GameComponents.AddCompnent(m); // ... } Now it's easy to imagine that this components load method has to precede other game components that do want to access the model m in their own load method.

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