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Why do I have to have CapsLock permanently ON

- by Patrick Mann

Initially, I believed this was on OpenOffice problem but Abiword and, indeed, Gedit, display the same problem, so it must be an Ubuntu glitch. I was typing a document and used CapsLock when creating a title. Now, when I turn CapsLock off, everything is in caps - when I turn it on, everything is in lower case. I can cope with this if I leave CapsLock on permanently but this is not what is supposed to happen. CapsLock OFF = NO CAPS (or should do!). Can anybody help with this? I've searched around this forum but, not being much of a forum user, I was unable to find a solution. It's entirely possible that I had a 'finger-fit' and hit a combo of buttons which included CapsLock but I don't remember doing that. I'm running Ubuntu Netbook Edition 10.04 on an HP Intel PC. If you need any more System specific stuff, just shout. Thanks, Patrick

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Bug in firefox address bar autocomplete running on KDE

- by marcus

Has anyone experienced this graphical glitch when typing in Firefox address bar? The drop-down list is not drawn correctly, with some "blocks" missing. After typing more letters or hovering the mouse cursor, the list redraws itself and becomes complete. I'm running Ubuntu 12.04, Firefox 13.0.1 and this only happens in KDE (tested with 4.8.2, 4.8.3 and 4.8.4). It does not happen in Unity or Xfce with the same user profile. If I go to the KDE control panel and disable the Fade effect, the bug starts to happen to almost every menu in the system, including, the taskbar window previews. Enabling the “Fade” effect corrects the bug everywhere except in Firefox. I have an Nvidia card and I am using the proprietary driver (current, not current-updates -- not sure about the difference), but the linked question on an Arch Linux forum says this happen with the open source driver and with other cards too. Does anyone have an idea for a solution?

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Tips or techniques to use when you do't know how to code something?

- by janoChen

I have a background as UI designer. And I realized that it is a bit hard for me to write a pieces of logic. Sometimes I get it right, but most of the time, I end up with something hacky (and it usually takes a lot of time). And is not that I don't like programming, in fact, I'm starting to like it as much as design. It's just that sometimes I think that I'm better at dealing with colors an shapes, rather than numbers and logic (but I want to change that). What I usually do is to search the solution on the Internet, copy the example, and insert it into my app (I know this is not a very good practice). I've heard that one tip was to write the logic in common English as comment before writing the actual code. What other tips and techniques I can use?

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Top 10 Reasons to Use MySQL and MySQL Cluster as an Embedded Database

- by Rob Young

If you are considering using MySQL and/or MySQL Cluster as the embedded database solution for your application, you should join us for today's webcast where we will discuss how you can cut costs, add flexibility and benefit from new performance and scalability enhancements that are now available in MySQL 5.6 and MySQL Cluster 7.2. We will cover the top 10 reasons that make MySQL and MySQL Cluster the best solutions for embedding in both shrink wrapped and SaaS provided applications, how industry leaders leverage MySQL products and how you can get started with the latest innovations and support offerings across the MySQL product line. You can learn more and reserve your seat here. As always, thanks for your support of MySQL!

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soa_infra is not coming up due to Failed to invoke startup class "JRF Startup Class", java.lang.ClassNotFoundException

- by Anirudh Pucha

Problem: soa_infra is not coming up and below is the error observed: BEA-000286 Failed to invoke startup class "JRF Startup Class", java.lang.ClassNotFoundException: oracle.jrf.wls.JRFStartup java.lang.ClassNotFoundException: oracle.jrf.wls.JRFStartup at java.net.URLClassLoader$1.run(URLClassLoader.java:202) Solution: 1. Open BEA_HOME\wlserver_10.3\common\nodemanager\nodemanager.properties on the managed server machine. 2. Set StartScriptEnabled=true. 3. Restart the node manager. 4. Stop the managed server. 5. Start the managed server from Admin console. StartScriptEnabled=true makes sure that the node manager uses the startManagedWebLogic.cmd file from managed server bin directory. 6. Try starting the soa_infra application again.

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Understanding Ajax crawling of search site

- by vacuum

I have a couple of questions about Ajax crawling of site, which is kind of search engine itself. The base article explains the mechanism of making AJAX application crawlable. All this stuff with HTML-snapshots is clear and easy to implement, but I cant understand where will Google bot will get "the crawler finds a pretty AJAX URL"( ie www.example.com/ajax.html#key=value) to work with. First thing, that came on mind - is breadcrumb. In sitemap we can specify pages with breadcrumb on it. so bot will go to these pages and get HTML-snapshots from here. But I'm sure, there are exists other ways to give bot this "pretty AJAX URL". In our case, we have simple search site, where user enters keyword, presses "Find", js execute Ajax request, receives JSON reponce and fill page with results(without any refresh of course). In this case - how to make google bot crawle all the presults in addition to sitemap? Is there some example of solution, described in article above?

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Entity Type specific updates in entity component system

- by Nathan

I am currently familiarizing myself with the entity component paradigm. For an example, take a collision system, that detects if entities collide and if they do let them explode. So the collision system has to test collision based on the position component and then set the state of those entities to exploding. But what if the "effect" (setting the state to exploding) is different for different entities? For example, a ship fades out while for an asteroid a particle system must be created. Since entities and components are only data, this must happen in some system. The collision system could do it, but then it must switch over the entity type, which in my opinion is a cumbersome and difficult to extend solution. So how do I trigger "entity type dependend" updates on an entity?

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System Center Capacity Planner 2007

- by Colt

With a recent case that I need to design the system infrastructure as well as the hardware specification of a SharePoint farm for a client, so I go and find the SharePoint Capacity Planner (CP) 2007 to stimulate a user model.Before installting the SharePoint CP 2007, System Center CP is a prerequisite but unfortunity the Microsoft download page is _blank_: Alternatively, I get the installer from a colleague. However, I face another problem while installing it: The installer has encountered an unexpected error installing this package. This may indicate a problem with the package. The error code is 2738.This issue is happened only in Vista, and the details and solution had been posted on TechNet: C:\Windows\System32\regsvr32 vbscript.dll I can download the SharePoint CP and continue my work now. :)

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Fade out Label / Button / Status Bar with GTK

- by wolfv

What is the easiest way to fade out and fade in elements in Python / GTK 3? Coming from webdevelopment, my initial take on this problem was to call c = widget.get_style_context(), c.remove_class('visible'), c.add_class('invisible') but that didn't work out (Do I have to call something like "redraw"?) I also added a transition to the GTK CSS. Thanks, Wolf EDIT: I might specify what I would like to achieve: I have this "statusbar" which is just a vertical container on my app (like in the screenshot on top of this page http://uberwriter.wolfvollprecht.de/). If the mouse is not moving, I want to fade all that stuff out (also to preserve computing power // no recalculation of word- and char count) and to minimize "distraction"). I already found the appropriate event to listen to (motion-notify-event), so now I only need to add a simple fade out and a timeout. If someone can point me to a solution, be it with clutter or cairo, I would be very happy.

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Windows Phone 7 DatePicker gotcha

- by David Turner

The Silverlight Toolkit for Windows Phone adds some great extra controls for Windows Phone 7, one gotcha that I ran into was that the DatePicker Application Bar icons don’t show up unless you include them in your project. The problem is that your DatePicker ends up looking like this: Tim Heuer mentions this in his blog post about the Silverlight Toolkit for WP7, and as he says, it is documented in the source code: So the problem is that the icons can’t be referenced from the Silverlight Toolkit Assembly, and the solution is that you have to add them to you project in the ‘well known’ / pre-defined location of a top level folder in your project called Toolkit.Content, and you must make sure to mark the icons with a Build Action of ‘Content’ otherwise it wont work: The result is that your DatePicker will now look like this:

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MySQL - ODBC Data Connector

- by Stuart Brierley

Having previsouly installed and then configured MySQL, you may now need to install the ODBC Data Connector driver in order to connect to your MySQL database. Following the Splash screen the first thing to choose is the Setup Type for your installation. As usual I chose custom so that I could see the components that were actually being installed. In this case the custom set up screen allows you to choose to install the driver and the documentation. Finally you can complete the installation Assuming it completes okay you have now installed the MySQL ODBC driver. My intention for installing all these MySQL components is so that I can now attempt to get BizTalk 2009 talking to the MySQL database for a solution that I am currently working on. For this I will next be looking at the Community ODBC Adapter.

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SQL SERVER Quick Note of Database Mirroring

Just a day ago, I was invited at Round Table meeting at prestigious organization. They were planning to implement High Availability solution using Database Mirroring. During the meeting, I have made few notes of what was being discussed there. I just thought it would be interested for all of you know about it.Database Mirroring works [...]...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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Run virtualbox in other X session

- by Valicek1

I'm running ubuntu on my laptop (host). Inside ubuntu, there is running one instance of virtualbox. (where is installed MS Windows). My idea is to run virtualbox in separate X session (something like multiuser). If it is not clear, i'll try to explain... When I want to visit tty1, I'll press CTRL+ALT+F1. To return to my Unity desktop, I'm gona use CTRL+ALT+F7... And here comes what I need. After pressing CTRL+ALT+F8 show fullscreen virtualbox windows system, just to switch as ttys.. I am using Ubuntu 14.10. I have wasted hours by using google to find some solution, but my biggest prolem is I cannot name the problem.

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Yet another blog about IValueConverter

- by codingbloke

After my previous blog on a Generic Boolean Value Converter I thought I might as well blog up another IValueConverter implementation that I use. The Generic Boolean Value Converter effectively converters an input which only has two possible values to one of two corresponding objects. The next logical step would be to create a similar converter that can take an input which has multiple (but finite and discrete) values to one of multiple corresponding objects. To put it more simply a Generic Enum Value Converter. Now we already have a tool that can help us in this area, the ResourceDictionary. A simple IValueConverter implementation around it would create a StringToObjectConverter like so:- StringToObjectConverter using System; using System.Windows; using System.Windows.Data; using System.Linq; using System.Windows.Markup; namespace SilverlightApplication1 { [ContentProperty("Items")] public class StringToObjectConverter : IValueConverter { public ResourceDictionary Items { get; set; } public string DefaultKey { get; set; } public StringToObjectConverter() { DefaultKey = "__default__"; } public virtual object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { if (value != null && Items.Contains(value.ToString())) return Items[value.ToString()]; else return Items[DefaultKey]; } public virtual object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { return Items.FirstOrDefault(kvp => value.Equals(kvp.Value)).Key; } } } There are some things to note here. The bulk of managing the relationship between an object instance and the related string key is handled by the Items property being an ResourceDictionary. Also there is a catch all “__default__” key value which allows for only a subset of the possible input values to mapped to an object with the rest falling through to the default. We can then set one of these up in Xaml:- <local:StringToObjectConverter x:Key="StatusToBrush"> <ResourceDictionary> <SolidColorBrush Color="Red" x:Key="Overdue" /> <SolidColorBrush Color="Orange" x:Key="Urgent" /> <SolidColorBrush Color="Silver" x:Key="__default__" /> </ResourceDictionary> </local:StringToObjectConverter> You could well imagine that in the model being bound these key names would actually be members of an enum. This still works due to the use of ToString in the Convert method. Hence the only requirement for the incoming object is that it has a ToString implementation which generates a sensible string instead of simply the type name. I can’t imagine right now a scenario where this converter would be used in a TwoWay binding but there is no reason why it can’t. I prefer to avoid leaving the ConvertBack throwing an exception if that can be be avoided. Hence it just enumerates the KeyValuePair entries to find a value that matches and returns the key its mapped to. Ah but now my sense of balance is assaulted again. Whilst StringToObjectConverter is quite happy to accept an enum type via the Convert method it returns a string from the ConvertBack method not the original input enum type that arrived in the Convert. Now I could address this by complicating the ConvertBack method and examining the targetType parameter etc. However I prefer to a different approach, deriving a new EnumToObjectConverter class instead. EnumToObjectConverter using System; namespace SilverlightApplication1 { public class EnumToObjectConverter : StringToObjectConverter { public override object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { string key = Enum.GetName(value.GetType(), value); return base.Convert(key, targetType, parameter, culture); } public override object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { string key = (string)base.ConvertBack(value, typeof(String), parameter, culture); return Enum.Parse(targetType, key, false); } } } This is a more belts and braces solution with specific use of Enum.GetName and Enum.Parse. Whilst its more explicit in that the a developer has to choose to use it, it is only really necessary when using TwoWay binding, in OneWay binding the base StringToObjectConverter would serve just as well. The observant might note that there is actually no “Generic” aspect to this solution in the end. The use of a ResourceDictionary eliminates the need for that.

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Physics engine that can handle multiple attractors?

- by brice

I'm putting together a game that will be played mostly with three dimensional gravity. By that I mean multiple planets/stars/moons behaving realistically, and path plotting and path prediction in the gravity field. I have looked at a variety of physics engines, such as Bullet, tokamak or Newton, but none of them seem to be suitable, as I'd essentially have to re-write the gravity engine in their framework. Do you know of a physics engine that is capable of dealing with multiple bodies all attracted to one another? I don't need scenegraph management, or rendering, just core physics. (collision detection would be a bonus, as would rigid body dynamics). My background is in physics, so I would be able to write an engine that uses Verlet integration or RK4 (or even Euler integration, if I had to) but I'd much rather adapt an off the shelf solution. [edit]: There are some great resources for physics simulation of n-body problems online, and on stackoverflow

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How can we view 3d objects from top down view in TD game

- by Syed

I am making a tower defense game. I am working in x and y axis only. I have made a grid, snapped towers and made a pathfinding algo to run enemy. Initially I have worked with cubes and spheres in place of towers and enemies. Now I am going to place real towers (3D). Note that I haven't used z axis up till now. The user will analyze the game from top down view. I want the user to see towers placement with a little bit of 3d view but I have made my all code in 2d thing. Is there any solution to my problem that somewhat tower placement would view a 3D touch or you can say 2.5D ?? (like fieldrunners) or should I have to involve z axis and ignoring y axis ?

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Manchester UG Presentation Video

In July I was invited to speak at the UK SQL Server UG event in Manchester. I spoke about Excel being a good data mining client. I was a little rushed at the end as Chris Testa-ONeill told me I had only 5 minutes to go when I had only been talking for 10 minutes. Apparently I have a reputation for running over my time allocation. At the event we also had a product demo from SQL Sentry around their BI monitoring dashboard solution. This includes SSIS but the main thrust was SSAS Then came Chris with a look at Analysis Services. If you have never heard Chris talk then take the opportunity now, he is a top class presenter and I am often found sat at the back of his classes. Here is the video link

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Project Euler 8: (Iron)Python

- by Ben Griswold

In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 8. As always, any feedback is welcome. # Euler 8 # http://projecteuler.net/index.php?section=problems&id=8 # Find the greatest product of five consecutive digits # in the following 1000-digit number import time start = time.time() number = '\ 73167176531330624919225119674426574742355349194934\ 96983520312774506326239578318016984801869478851843\ 85861560789112949495459501737958331952853208805511\ 12540698747158523863050715693290963295227443043557\ 66896648950445244523161731856403098711121722383113\ 62229893423380308135336276614282806444486645238749\ 30358907296290491560440772390713810515859307960866\ 70172427121883998797908792274921901699720888093776\ 65727333001053367881220235421809751254540594752243\ 52584907711670556013604839586446706324415722155397\ 53697817977846174064955149290862569321978468622482\ 83972241375657056057490261407972968652414535100474\ 82166370484403199890008895243450658541227588666881\ 16427171479924442928230863465674813919123162824586\ 17866458359124566529476545682848912883142607690042\ 24219022671055626321111109370544217506941658960408\ 07198403850962455444362981230987879927244284909188\ 84580156166097919133875499200524063689912560717606\ 05886116467109405077541002256983155200055935729725\ 71636269561882670428252483600823257530420752963450' max = 0 for i in xrange(0, len(number) - 5): nums = [int(x) for x in number[i:i+5]] val = reduce(lambda agg, x: agg*x, nums) if val > max: max = val print max print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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Can I use MSBuild to build old VS6 C++ projects?

- by awe

I have a build computer where Visual Studio not installed, only MSbuild which can build VS2008 projcets without having any Visual Studio installed. I wonder whether it is possible to use MSbuild with VC++ 6.0 project files, although I am thinking this could not be possible. In the past I have used it with a VS2008 solution file for C++, but not for building C++ 6.0 dsw file. For Vb6 we have an extension package for Msbuild (MSBuild.ExtensionPack.VisualStudio.VB6). Is anything similar available for C++ 6.0 projects? An alternative could be if there are lightweight build tools that can built VC6++ .dsw files without having to install Visual Studio 6.0 ?

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Unmet dependencies when trying to install openssh-server

- by Sabiya

I am running sudo-apt get install openssh-server on Ubuntu 12.04 64 bit system. It is giving me the following output. $ sudo apt-get install openssh-server Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: gcc-4.6 : Depends: libgcc1 (>= 1:4.6.3-1ubuntu5) but 1:4.6.2-14ubuntu2 is to be installed libc6 : Depends: libc-bin (= 2.15-0ubuntu10.1) libc6-dev : Depends: libc6 (= 2.15-0ubuntu10) but 2.15-0ubuntu10.1 is to be installed libgcc1 : Depends: gcc-4.6-base (= 4.6.2-14ubuntu2) but 4.6.3-1ubuntu5 is to be installed libxplc0.3.13:i386 : Depends: libc6:i386 (>= 2.5-5) but it is not going to be installed Depends: libgcc1:i386 (>= 1:4.2-20070516) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.2-20070516) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

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MySQL /G output

- by conandor

I ran mysql query as below on a non-partition table mysql> use test31 Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> explain partitions SELECT * FROM my_friends WHERE (requestor = '1234567890' OR contact = '1234567890') AND status = 1 ORDER BY request_id DESC LIMIT 0,100\G *************************** 1. row *************************** id: 1 select_type: SIMPLE table: my_friends partitions: NULL type: index_merge possible_keys: friend_index,requestor,contact key: friend_index,contact key_len: 17,17 ref: NULL rows: 2 Extra: Using sort_union(friend_index,contact); Using where; Using filesort 1 row in set (0.00 sec) on a partition table mysql> explain partitions SELECT * FROM my_friends WHERE (requestor = '1234567890' OR contact = '1234567890') AND status = 1 ORDER BY request_id DESC LIMIT 0,100\G *************************** 1. row *************************** id: 1 select_type: SIMPLE table: my_friends partitions: p1_p1sp0,p1_p1sp1,p1_p1sp2,p1_p1sp3,p1_p1sp4,p1_p1sp5,p1_p1sp6,p1_p1sp7,p1_p1sp8,p1_p1sp9,p1_p1sp10,p1_p1sp11,p1_p1sp12,p1_p1sp13,p1_p1sp14,p1_p1sp15,p1_p1sp16,p1_p1sp17,p1_p1sp18,p1_p1sp19,p1_p1sp20,p1_p1sp21,p1_p1sp22,p1_p1sp23,p1_p1sp24,p1_p1sp25,p1_p1sp26,p1_p1sp27,p1_p1sp28,p1_p1sp29 type: index_merge possible_keys: friend_index,requestor,contact key: friend_index,contact key_len: 17,17 ref: NULL rows: 60 Extra: Using sort_union(friend_index,contact); Using where; Using filesort 1 row in set (0.01 sec) What does the "rows" mean? less rows is more faster query?

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Oracle Database 11g Release 2 is SAP certified for Unix and Linux platforms.

- by jenny.gelhausen

SAP announces certification of Oracle Database 11g Release 2 on all available UNIX and Linux platforms. This certification comes along with the immediate availability of the following important options and features: * Advanced Compression Option (table, RMAN backup, expdp, DG Network) * Real Application Testing * Oracle Database 11g Release 2 Database Vault * Oracle Database 11g Release 2 RAC * Advanced Encryption for tablespaces, RMAN backups, expdp, DG Network * Direct NFS * Deferred Segments * Online Patching All above functionality has been fully integrated within the SAP products so they can be utilized and managed from within the SAP solution stack. All required migration steps can be done fully online. Learn why Oracle is the #1 Database for Deploying SAP Applications SAP Certification announcement var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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ASP.NET AJAX and my axe!

- by Marlon

So, I'm seriously considering axing ASP.NET AJAX from my future projects as I honestly feel it's too bloated, and at times convoluted. I'm also starting to feel it is a dying library in the .NET framework as I hardly see any quality components from the open-source community. All the kick-ass components are usually equally bloated commercial components... It was cool at first, but now I tend to get annoyed with it more than anything else. I'm planning on switching over to the jQuery library as just about everything in ASP.NET AJAX is often easily achievable with jQuery, and, more often than not, more graceful of a solution that ASP.NET AJAX and it has a much stronger open-source community. Perhaps, it's just me, but do you feel the same way about ASP.NET AJAX? How was/is your experience working with ASP.NET AJAX?

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C or assembly code to find current cpu core speed

- by honestann

How can my application efficiently determine the following information peroidically while it executes: 1: current speed of each of the 8 CPU cores. 2: which core the code is currently executing on. My application is C and assembly-language, so any solution in either C or assembly-language is fine. This code needs to execute quickly, so creating, reading and processing a file generated by "cat /proc/cpuinfo" is much too slow. The cores slow-down and speed-up automatically, probably to keep CPU temperature under control. Therefore, a one-time measure is not sufficient for my purposes. My application already reads and subtracts the cpu cycle counter in assembly language to determine number of clock cycles, but my program cannot compute elapsed time in nanoseconds unless it knows the current clock frequency of the cpu cores (and which core the code is executing on). Thanks!

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How should I replan A*?

- by Gregory Weir

I've got a pathfinding boss enemy that seeks the player using the A* algorithm. It's a pretty complex environment, and I'm doing it in Flash, so the search can get a bit slow when it's searching over long distances. If the player was stationary, I could just search once, but at the moment I'm searching every frame. This takes long enough that my framerate is suffering. What's the usual solution to this? Is there a way to "replan" A* without redoing the entire search? Should I just search a little less often (every half-second or second) and accept that there will be a little inaccuracy in the path?

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