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How do I save to an NTFS partition?

- by RADHAKRISHNAN

I was using ubuntu 11.04 on my Laptop. While installing it from a DVD, I have created a 10 GB NTFS partition at the beginning of the hard disk, as primary. All other partitions ( swap, a ext3, a ext4 and a FAT32 ) are created in as logical in the extended partition. All were working well in ubuntun11.04. Now the system was upgraded to ubuntu 11.10 via internet and was sucessful. But unable to either create folder/files or to write to existing files in the said NTFS partiton. But files in the partition can read - means mounting done. Same is the case even if logged in as root also. Fortunately no such problem with other partitions including FAT Why it is so, please help.

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MacBook Pro (5,3) Keyboard Weirdness

- by schwuk

My MacBook Pro (5,3) works almost completely OOTB (with restricted video and WiFi drivers), but I am experiencing some keyboard weirdness. Specifically to get either (` and ~) or (´ and ¨) I have to press the key twice. Only these two keys behave this way - every other key mapping works. Keyboard settings are: Model: Apple Laptop (due to #538474) Layout: United Kingdom Macintosh (International)

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What are some good examples of using pass by name?

- by Paul

When I write programs I using pass by value or pass by reference always seem to be logical methods. When learning about different programming languages I came across pass by name. Pass by name is a parameter passing method that waits to evaluate the parameter value until it is used. See Stack Overflow pass by name question for more information on the method. What I would like to know is: what are some good examples and/or reasons to use pass by name and should it be re-introduced into some more modern languages.

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OSB, Service Callouts and OQL - Part 2

- by Sabha

This section of the "OSB, Service Callouts and OQL" blog posting will delve into thread dump analysis of OSB server and detecting threading issues relating to Service Callout using ThreadLogic. We would also use Heap Dump and OQL to identify the related Proxies and Business services. The previous section dealt with threading model used by OSB to handle Route and Service Callouts. Please refer to the blog post for more details.

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Speaking - SQL Saturday 173, Washington DC

- by AllenMWhite

After a great time at the PASS Summit in Seattle I'll be once again presenting on PowerShell for SQL Server at SQL Saturday #173 in Chevy Chase, Maryland. On Friday, December 7 I'll be presenting my full day session Automate and Manage SQL Server with PowerShell . Here's the abstract: This soup-to-nuts all day session will first introduce you to PowerShell, after which you'll learn the basic SMO object model, how to manipulate data with PowerShell and how to use SMO to manage objects. We'll then...(read more)

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self referencing tables, good or bad?

- by NimChimpsky

Representing geographical locations within an application, the design of the underlying data model suggests two clear options (or maybe more?). One table with a self referencing parent_id column uk - london (london parent id = UK id) or two tables, with a one to many relationship using a foreign key. My preference is for one self-refercing table as it easily allows to extend into as many sub regions as required. IN general do people veer away from self referencing tables, or are they A-OK ?

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Algorithm development in jobs

- by dbeacham

I have a mathematics background but also consider career in some form of software development. In particular I'm interested in finding out what sort of industries are most likely to have more algorithm development/mathematical and logical problem solving slant rather than pure application development etc. Obviously, I'm assuming that some subset of the canonical data structures and associated algorithms (trees, lists, hash tables, sets, maps with search, insert, traversals etc.) are mostly going to be present in software development. However, where am I more likely to encounter problems of more discrete maths nature (combinatorial, graph theory, sets, strings, ...) explicitly or more likely in disguise. Any pointers much appreciated (including possible open source projects that I could use for my further search for applications and also possibly contribute to).

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Broadcom bcm4313 Ubuntu 13.10 connection time out

- by Wahtever

After upgrading to Ubuntu 13.10 I keep getting connection timed out every few seconds at which point i have to disconnect and reconnect to the WiFi network. The WiFi card worked fine on 13.04 with the bcmwl-kernel-source installed but giving problems on 13.10: *-network description: Wireless interface product: BCM4313 802.11bgn Wireless Network Adapter vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: eth1 version: 01 serial: c0:14:3d:cc:c9:c7 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) ip=192.168.1.4 latency=0 multicast=yes wireless=IEEE 802.11abg resources: irq:17 memory:f0500000-f0503fff How can i fix this? Thanks

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Multiplication for MVP matrices: Any benefits to doing so within the vertex shader?

- by Nick Wiggill

I'd like to understand under what circumstances (if any) it is worth doing MVP matrix multiplication inside a vertex shader. The vertex shader is run once per vertex, and a single mesh typically contains many vertices. All MVP inputs remain the same for each vertex in the vertex batch relating to a given draw call (model). Surely then, you're always better off keeping the multiplications in the client code, such that you pass in the whole MVP precalculated as a uniform? (avoiding redundant ops between individual vertices)

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Why does installing Grub2 give an "ISO9660: filesystem destruction..." warning?

- by Ettore

I have installed Ubuntu 12.04 on my computer, but at the end of the installation it gave me an error and it didn't install grub2. Now I'm trying to install it using the live cd: This is my sudo fdisk -l: Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x6af447e6 Device Boot Start End Blocks Id System /dev/sda1 * 2048 781459455 390728704 7 HPFS/NTFS/exFAT /dev/sda2 781459456 789272575 3906560 82 Linux swap / Solaris /dev/sda3 789272576 976773119 93750272 83 Linux After mounting and chroot the linux partiton, I give grub-install /dev/sda command, and I get: /usr/sbin/grub-setup: error: hd0 appears to contain a iso9660 filesystem which isn't known to reserve space for DOS-style boot. Installing GRUB there could result in FILESYSTEM DESTRUCTION if valuable data is overwritten by grub-setup (--skip-fs-probe disables this check, use at your own risk). (same error even with grub-install --recheck /dev/sda) What can I do? I also tried boot-repair, but I get this error: http://paste.ubuntu.com/1069353/

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Simple HTML5 Friendly Markup Sample

- by Geertjan

From a demo done by David Heffelfinger (who has a great Java EE 7 screencast series here), on HTML5 friendly markup. index.xhtml: <?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:jsf="http://xmlns.jcp.org/jsf"> <title>Data Entry Page</title> <body> <form method="POST" jsf:id='form'> <table> <tr> <td>Name:</td> <td><input jsf:id='name' type="text" jsf:value="${person.name}" /></td> </tr> <tr> <td>City</td> <th><input jsf:id='city' type="text" jsf:value="${person.city}"/></th> </tr> <tr> <td><input type="submit" value="Submit" jsf:action="confirmation" /></td> </tr> </table> </form> </body> </html> confirmation.xhtml: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Data Confirmation Page</title> </head> <body> <h1>#{person.name}</h1> from <h2>#{person.city}</h2> </body> </html> Person.java: package org.demo; import javax.enterprise.inject.Model; @Model public class Person { String name; String city; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } }

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Collision: Vector class (java)

- by user8363

When handling collision detection / response and you need a Vector class, do you need to create that class yourself or is there a java class you can use? A vector class should have methods like: subtract(Vector v), normalize(), dotProduct(Vector v), ... At the moment it seems logical to use classes like java.awt.Rectangle and java.awt.Polygon to calculate collisions. Would I be right to use these classes for this purpose? My question is not about how to implement collision detection, I know how that works. However I'm wondering what would be a correct and clean way to implement it in java since I'm fairly new to the language and to application development in general.

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Drawing flaming letters in 3D with OpenGL ES 2.0

- by Chiquis

I am a bit confused about how to achieve this. What I want is to "draw with flames". I have achieved this with textures successfully, but now my concern is about doing this with particles to achieve the flaming effect. Am I supposed to create a path along which I should add many particle emitters that will be emitting flame particles? I understand the concept for 2D, but for 3D are the particles always supposed to be facing the user? Something else I'm worried about is the performance hit that will occur by having that many particle emitters, because there can be many letters and drawings at the same time, and each of these elements will have many particle emitters. More detailed explanation: I have a path of points, which is my model. Imagine a dotted letter "S" for example. I want make the "S" be on fire. The "S" is just an example it can be a circle, triangle, a line, pretty much any path described by my set of points. For achieving this fire effect I thought about using particles. So I am using a program called "Particle Designer" to create a fire style particle emitter. This emitter looks perfect on 2D on the iphone screen dimensions. So then I thought that I could probably draw an S or any other figure if i place many particle emitters next to each other following the path described. To move from the 2D version to the 3D version I thought about, scaling the emitter (with a scale matrix multiplication in its model matrix) and then moving it to a point in my 3D world. I did this and it works. So now I have 1 particle emitter in the 3D world. My question is, is this how you would achieve a flaming letter? Is this too inefficient if i expect to have many flaming paths on my world? Am i supposed to rotate the particle's quad so that its always looking at the user? (the last one is because i noticed that if u look at it from the side the particles start to flatten out)

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Ubiquity is not recognizing existing partition while trying to install Ubuntu alongside Windows 7

- by Bertner

So I'm using Ubuntu live CD to install Ubuntu next to Windows 7 but it doesn't recognize partitions. Here is sudo fdisk -l: Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x0c7a859b Device Boot Start End Blocks Id System /dev/sda1 63 1250259631 625129784+ f W95 Ext'd (LBA) Partition 1 does not start on physical sector boundary. /dev/sda2 * 81920 4177919 2048000 b W95 FAT32 /dev/sda3 4177920 147535871 71678976 7 HPFS/NTFS/exFAT /dev/sda5 147538608 1147859631 500160512 7 HPFS/NTFS/exFAT I have one partition with Windows 7, one with its created partition (OS) and one for data.

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Using gerrit (or similar tool) on a team where multiple devs work on a single feature

- by Bacon

We have a team of roughly ~8 devs who regularly work on the same feature over the course of a 3 week sprint. It isn't quite pair programming, but in our current workflow devs regularly push up incomplete code for a colleague to complete. This worked fine before we introduced Gerrit, but now our commits need to represent chunks of test-passing, complete, logical functionality, and so the model breaks. My only idea is to have everybody push up to a separate, untracked branch up until the functionality is ready for review, then squash everything into commits that make sense and push up. Is there another Gerrit-ized workflow that could work? I know this is a widely discussed topic on Google Groups, and that there has recently been some discussion of Gerrit topic reviews, but I wanted to see if there is anybody out there using Gerrit in this way, and what the suggested workflow would be.

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SQL Server 2012 Integration Services- Using Environments in Package Execution

SQL Server 2012 Integration Services offers several different options for deploying and storing SSIS packages along with their associated projects, two of which are directly related to two deployment models available in SQL Server Data Tools console. Marcin Policht presents one of these methods, which deals with packages deployed using Project Deployment Model and leverages newly introduced Environments.

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Implementing the MVC Design Pattern in ASP.NET...

Design patterns can help solve complex design problems if they are properly used. The main advantage of using the Model-View-Control (MVC) pattern is decoupling the business and the presentation layers....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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Implementing the MVC Design Pattern in ASP.NET...

Design patterns can help solve complex design problems if they are properly used. The main advantage of using the Model-View-Control (MVC) pattern is decoupling the business and the presentation layers....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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Easily Tailor Your Applications Without IT Using Fusion Middleware

Your business is unique so how do you get your best-in class applicaitons to meet your unique needs? With Oracle's family of Composers, you can easily tailor your applications to meet your unique business requirements using business user tools without relying on heavy coding or IT. What's more these changes are kep upgrade-friendly and can be used anywhere - on the Cloud, on Premise or in a hybrid model.

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Practices for domain models in Javascript (with frameworks)

- by AndyBursh

This is a question I've to-and-fro'd with for a while, and searched for and found nothing on: what're the accepted practices surrounding duplicating domain models in Javascript for a web application, when using a framework like Backbone or Knockout? Given a web application of a non-trivial size with a set of domain models on the server side, should we duplicate these models in the web application (see the example at the bottom)? Or should we use the dynamic nature to load these models from the server? To my mind, the arguments for duplicating the models are in easing validation of fields, ensuring that fields that expected to be present are in fact present etc. My approach is to treat the client-side code like an almost separate application, doing trivial things itself and only relying on the server for data and complex operations (which require data the client-side doesn't have). I think treating the client-side code like this is akin to separation between entities from an ORM and the models used with the view in the UI layer: they may have the same fields and relate to the same domain concept, but they're distinct things. On the other hand, it seems to me that duplicating these models on the server side is a clear violation of DRY and likely to lead to differing results on the client- and server-side (where one piece gets updated but the other doesn't). To avoid this violation of DRY we can simply use Javascripts dynamism to get the field names and data from the server as and when they're neeed. So: are there any accepted guidelines around when (and when not) to repeat yourself in these situations? Or this a purely subjective thing, based on the project and developer(s)? Example Server-side model class M { int A DateTime B int C int D = (A*C) double SomeComplexCalculation = ServiceLayer.Call(); } Client-side model function M(){ this.A = ko.observable(); this.B = ko.observable(); this.C = ko.observable(); this.D = function() { return A() * C(); } this.SomeComplexCalculation = ko.observalbe(); return this; }l M.GetComplexValue = function(){ this.SomeComplexCalculation(Ajax.CallBackToServer()); }; I realise this question is quite similar to this one, but I think this is more about almost wholly untying the web application from the server, where that question is about doing this only in the case of complex calculation.

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How do I instal Skype on iMac G5 Ubuntu 12.04.1?

- by Sergiu

So I have this imac G5 model 8.7 running powerpc64. I can't install any of the .debs they have on skype.com because they're the wrong architecture and I also tried adding the partner repo for the software center but when I do sudo apt-get install skype it says it can't find the package as if the repo I just added doesn't exist. I added the repo with the following command: sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner" I'm running Ubuntu Release 12.04 (precise) 32-bit Kernel Linux 3.2.0-31-powerpc64-smp GNOME 3.4.2

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Is it possible to change the group list shown on the application launcher?

- by Grobbendonk

I just installed Unity, on Ubuntu 10.10, to try it out. I've tried fiddling with a few things, but I can't work out how the applications are grouped and listed. I mean - if I click on the Applications in the launcher, we get the list of applications installed, with the option to narrow the selection by group. i.e. |Search box|All applications|Accessories|Games|Internet|Media|Office|System| My question is where that list is generated - my machine is mostly for work, so the games have been uninstalled (and I get a "there are no games on this box" message, which is nice), and there's a stack of other stuff I'd like to see under a new group of "work" or something. Obviously, a logical follow-up - how does unity know how to classify the applications into those groups? Is it the info in the .desktop links to them?

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Is there an effective way to test XSL transforms/BizTalk maps?

- by nlawalker

Creating repeatable tests for BizTalk maps is frustrating. I can't find a way to handle testing them like I'd do unit testing, because I can't find ways to break them into logical chunks. They tend to be one big monolithic unit, and any change has the potential to ripple through the map and break a lot of unit tests. Even if I could break it up, creating XML test inputs is painful and error prone. Is there any effective way of testing these? I'd settle for recommendations for testing XSL transforms in general, but I specifically mention BizTalk maps primarily for the reason that when using the mapper, there really isn't any way to break your XSLT into templates (which I'd imagine you could use to break up your logic into testable chunks, but I've honestly never gotten that far with XSLT).

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Introduction to Bellevue View Engine - Part 2

Prototype of a new template engine for Asp.Net MVC framework that respects HTML and uses CSS-like syntax for model binding....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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Why is Prolog associated with Natural Language Processing?

- by kyphos

I have recently started learning about NLP with python, and NLP seems to be based mostly on statistics/machine-learning. What does a logic programming language bring to the table with respect to NLP? Is the declarative nature of prolog used to define grammars? Is it used to define associations between words? That is, somehow mine logical relationships between words (this I imagine would be pretty hard to do)? Any examples of what prolog uniquely brings to NLP would be highly appreciated.

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