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  • What changed with timidity, alsa and jack in 11.10?

    - by Dave
    I (just) upgraded from 11.4 to 11.10 and noticed some differences in the behavior of timidity. I used to (11.4) exectute >timidity midifile.midi without running jackd, and thus using alsa (or pulseaudio?) to produce sound from midi files. Now having upgraded, this does not work -- currently this command just freezes if jack is not running. If jack is running, it does work but there is an initial audio glitch (noise burst at the start of playback, analogous to the sound of a plug being inserted) that I'd rather not have to deal with. All the indications that I have is that in 11.10 timidity will only work (albeit glitchy) with jack on, whereas in 11.4 it did not require this. Is there any way to restore timidity's non-jack operation in 11.10? Is there a way to get rid of the audio glitch in with jack operation? Overall, what underlying changes in these programs and the audio infrastructure are behind this?

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  • Can a loosely typed language be considered true object oriented?

    - by user61852
    Can a loosely typed programming language like PHP be really considered object oriented? I mean, the methods don't have returning types and method parameters has no declared type either. Doesn't class design require methods to have a return type? Don't methods signatures have specifically-typed parameters? How can OOP techniques help you code in PHP if you always have to check the types of parameters received because the language doesn't enforce types? Please, if I'm wrong, explain it to me. When you design things using UML, then code classes in PHP with no return-typed methods and no-type parameters... Is the code really compliant with the UML design? You spend time designing the architecture of your software, then the compiler doesn't force the programmer to follow your design while coding, letting he/she assign any object variable to any other variable with no "type-mismatch" warning.

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  • Apt-get update through tor

    - by Alexander
    I'm trying to update my apt-get list. In my country a lot of sites are blocked or have been blocked from companies. When I use a proxy for the whole system I get errors, tor works perfectly when browsing. My question is can I update apt-get through a connection from tor? I mean I want to unblock the blocked sites using tor connection so I can perform "apt-get update" without errors ... Thanks in advance. Edit BTW : I'm using Ubuntu 13.10 and Tor 0.2.21 alexander@Alexander-PC:~$ sudo apt-get update [sudo] password for alexander: Ign http://extras.ubuntu.com saucy InRelease Ign http://security.ubuntu.com saucy-security InRelease Ign http://us.archive.ubuntu.com saucy InRelease Hit http://extras.ubuntu.com saucy Release.gpg Get:1 http://dl.google.com stable InRelease [1,540 B] 100% [1 InRelease gpgv 1,540 B] [Waiting for headers] [Waiting for headers] [WaSplitting up/var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stabIgn http://dl.google.com stable InRelease E: GPG error: http://dl.google.com stable InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?

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  • Agent versus Agentless management

    - by Owen Allen
    I got a couple of questions about Agentless asset management: "What does agentless management do for an asset?" Agentless management is one of the two ways that you can manage an operating system. Rather than installing an Agent Controller on the OS, agentless management uses SSH to regularly check the system and gather monitoring data. Many of the actions that would be available on an agent-managed system are available on an agentless system, but actions such as running reports or updating an Oracle Solaris 10 or Linux OS are not available. A table showing the capabilities of agentless management is here. "What permissions does agentless management require?" Agentless management still requires root credentials. If you can't log into the system as root, you can provide one set of credentials for the login, and then a set of root credentials to switch to.

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  • What is so good about Linux? [closed]

    - by Chris Bridgett
    Self-explanatory question title. I've only ever used Windows OS's (except Mac OSX at friends etc, years ago occasionally) and when diving into the world of programming, Linux is a name that is coming up every other tutorial or article. All my web hosts run Linux and a lot of programming literature covers how to go about various tasks on Linux as well as Windows, but other than the odd raving I've read years ago about Linux being less resource-intensive, I haven't really given it much thought. Any article I read about Linux and whether it should be used for... 'regular' use, it's shunned since any windows applications I'm familiar with will usually require the windows API and there's no end of 'hacking' to get various programs working on Linux. As far as I understand a GUI is optional on Linux too? This all sounds very noobish I'm sure, but we all start somewhere, so: What is Linux good for? What should Linux be used for?

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  • Gradual approaches to dependency injection

    - by JW01
    I'm working on making my classes unit-testable, using dependency injection. But some of these classes have a lot of clients, and I'm not ready to refactor all of them to start passing in the dependencies yet. So I'm trying to do it gradually; keeping the default dependencies for now, but allowing them to be overridden for testing. One approach I'm conisdering is just moving all the "new" calls into their own methods, e.g.: public MyObject createMyObject(args) { return new MyObject(args); } Then in my unit tests, I can just subclass this class, and override the create functions, so they create fake objects instead. Is this a good approach? Are there any disadvantages? More generally, is it okay to have hard-coded dependencies, as long as you can replace them for testing? I know the preferred approach is to explicitly require them in the constructor, and I'd like to get there eventually. But I'm wondering if this is a good first step.

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  • Cleaning up a folder structure from Visual Studio artifacts from the shell

    A few years ago I wrote a post that showed how to write a NAnt script to clean a folder structure from the artifacts folders used by Visual Studio. Today what I wanted to show you is a way that doesnt require NAnt installed on your computer, but that uses just a very simple command for Windows shell. Actually, its just a very tiny variation of the same command that Jon Galloway wrote to clean a folder structure from SVN files. But without further ado, here it is: Windows Registry Editor...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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  • Outdoor Programming Jobs...

    - by Rodrick Chapman
    Are there any kinds of jobs that require programming (or at least competency) but take place outdoors for a significant portion of the time? As long as I'm fantasizing, an ideal job would involve programming in a high level language like Haskell, F#, or Scala* for, say, 50% of the time and doing something like digging an irrigation trench the rest of the time. My background: I triple majored in mathematics, philosophy, and history (BS/BA) and have been working as a web developer for the past six years. I love hacking but I'm feeling a bit burned out. *I only chose these languages as examples since, ideally, I'd want to work among high caliber people... but it really doesn't matter.

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  • Authorizing a module in a framework

    - by Devon
    I've been studying PHP frameworks and I've been looking for how you would go about properly authorizing a module for classes, methods, and database actions. For example, lets say I want a framework that includes different modules from different programmers: Some core class may require special access, not all modules should have access to every core class unless authorized to. I do not want one module to be able to call another module's class/method if it is not supposed to be able to. I also don't want a security flaw in one module to be able to affect another module's database tables. I suppose an easy way to go about this is have a database table for authorization to consult, but I doubt that is the best way to go about this. I'd appreciate any advice or pointing me in the right direction for some reading.

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  • Starting off with web dev with php

    - by pavan kumar
    I'm currently working with Java / C++. I'm interested in web development and am planning to shift my stream. I heard that PHP is a good platform to start off and also it does not require that much of knowledge in technologies like JSP / Servlets or frameworks like springs / struts / hibernate. I have basic ideas about HTML and Javascript as well. I have gone through previous posts in SO and found out the relevant resources as well: http://net.tutsplus.com/tutorials/php/the-best-way-to-learn-php/ http://www.webhostingtalk.com/archive/index.php/t-1028265.html http://www.killerphp.com/ http://phpforms.net/tutorial/tutorial.html http://www.php5-tutorial.com/ etc. Now, my question is: I heard of PHP frameworks like CodeIgniter, Zend Frameworkd and Yii. Doesn't learning PHP & MySql implicitly makes us aware of these frameworks? Am I making a good choice in stating with PHP? Is it a good idea to shift streams?

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  • Incorrect instructions on Upgrading to 12.10 from 12.04LTS

    - by Russ F
    https://wiki.ubuntu.com/QuantalQuetzal/TechnicalOverview/Beta1 reports incorrect instructions for upgrading from Ubuntu 12.04 LTS. The correct steps are: Alt+F2, Update Manager, choose settings, updates tab and set notify to "For any new version." Close the manager. Press Alt+F2, Terminal, then enter "sudo update-manager -d" (without the quotes)... Sorry to pester this list, but the Ubuntu wiki has no provisions for "Talk" or "Discussion" that do not require registration and a login. I feel like I should be able to point out a problem without signing in.

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  • Ubuntu 11.10 with KDE installed does not prompt for elevation for privileged ops in all apps

    - by Michael Goldshteyn
    I installed the KDE window manager on top of Ubuntu 11.10 and while I am using KDE, I do not get an elevation dialog when I try to perform tasks that require root privileges. Instead, the operations silently fail, unless I launch apps from a terminal, in which case I get errors like: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 649, in on_isv_source_toggled self.backend.ToggleSourceUse(str(source_entry)) File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 143, in __call__ **keywords) File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 630, in call_blocking message, timeout) dbus.exceptions.DBusException: com.ubuntu.SoftwareProperties.PermissionDeniedByPolicy: com.ubuntu.softwareproperties.applychanges Or from the muon package manager, an error dialog such as: Does anyone know what I need to do to fix this, so that I get a proper dialog asking for elevation? Otherwise, I have to start each app that may need root privs with sudo from a terminal or gksudo. Thanks

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  • How do I remove webapps completely?

    - by user104106
    I'd like to be able to remove webapps from my system, I don't want any of the packages associated with it. But trying to remove it I am told there are several other packages that require it. Please change this, I don't like the idea of webapps and I want it gone. I'm tired of getting annoying popups that don't explain anything asking me to install something! It feels like a huge security breach and the user is given no information as to what they are choosing. This is a very bad decision on Canonicals part. I should be working for them, something like this would never ship.

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  • Is finding graph minors without single node pinch points possible?

    - by Alturis
    Is it possible to robustly find all the graph minors within an arbitrary node graph where the pinch points are generally not single nodes? I have read some other posts on here about how to break up your graph into a Hamiltonian cycle and then from that find the graph minors but it seems to be such an algorithm would require that each "room" had "doorways" consisting of single nodes. To explain a bit more a visual aid is necessary. Lets say the nodes below are an example of the typical node graph. What I am looking for is a way to automatically find the different colored regions of the graph (or graph minors)

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  • Where can I buy freely redistributable (creative commons) game assets?

    - by Erlend
    I'd like to know about any 3D asset shops out there that specialize in game assets and, most importantly, license their assets under an open license like Creative Commons or similarly permissive. We are looking to buy some professional looking assets for use and redistribution with our open source 3D game engine. The problem is that all the commercial 3D assets we've come by are only sold under very restrictive licenses, which won't allow us to include the models in our code repository (since free code hosting repositories require that all your data, including media, is open source or otherwise copyleft) nor in turn redistribute the assets as part of our downloadable SDK. I realize this sounds like a weak business idea, since users could just buy the asset and start sharing it with everyone. But somehow this has worked for hundreds of WordPress theme shops, so I was hoping maybe someone's trying similar things for commercial game assets.

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  • Chrome Apps + Native Client

    Chrome Apps + Native Client Did you know that you can use Native Client inside a Chrome App? Join +John Mccutchan and +Pete LePage as they introduce Native Client Acceleration Modules (NaCl AM) which expose C++ libraries to JavaScript programs. NaCl AMs can, be used for bulk data processing (compression, encryption) but they also work well in interactive applications that require low latency. We'll explain how to build a NaCl Acceleration Module and demo a Bullet Physics engine running inside a Chrome App with a NaCl AM interacting with an HTML and JavaScript UI using three.js. We'll be live on Tuesday December 11th at at 9am PT, showing you code, samples and answering your questions. From: GoogleDevelopers Views: 0 0 ratings Time: 45:00 More in Science & Technology

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  • Using model tools as map editor

    - by cooky451
    I want to make a game which would require a 3D map editor. Of course, I would like to avoid creating such an editor. My idea is now to use modeling tools (3DS Max, Maya, Blender) to create the map, and to give game specific objects specified names. This way I'd just need to write an COLLADA - native map format converter. But I'm not sure if this is possible the way I imagine it, that's why I'd like to hear your thoughts on the matter. Are modeling tools suitable to create big open world maps? Can this "naming convention"-idea for game specific objects work? Are the modeling tools able to export a scene in chunks / in a way that occlusion culling and collision detection can be properly done? If not: Is there a way to build a suitable data structure from the exported data?

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  • Should I avoid SharePoint Development in Visual Studio?

    - by SaphuA
    Not long ago I started an internship at a company that supplies SharePoint consultancy, hosting and development. While their consultancy seems to be pretty good and solid, I feel their development department lacks direction. The reason for this, most likely, is that they stopped outsourcing not too long ago. One thing that I've frequently bumped my head into is the following: My supervisor strongly insists that everything that can be done natively in SharePoint (somehow this includes editing xslt files in Designer) should be done in SharePoint. Even if this results in longer development time (at least when they make me write XSLT) and reduced usability. Her main arguments for this are: Better maintainability Editing the functionality doesn't require programming knowledge I feel the company is a little biassed and I am unable to get a decent discussion going. This is why I am looking for other places to get some responses on the subject (and not only on the arguments of my supervisor, but more on the subject in general). Kind regards

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  • Best Practices of Performance Management Plan (PMP)

    - by Robert Story
    Upcoming WebcastTitle: Best Practices of Performance Management Plan (PMP)Date: April 22, 2010Time: 11 AM EST / 8 AM PST / 8.30 PM IST  Product Family: EBS HRMS SummaryThis webcast will cover the best practices of Performance Management Plan(PMP) in very common scenarios. The best practices will address major issues around plan dates, new hire, manager transfer and related events. The session will also cover HRMS Patching Strategy, Key References and various customer communication channels.A short, live demonstration (only if applicable) and question and answer period will be included.Click here to register for this session....... ....... ....... ....... ....... ....... .......The above webcast is a service of the E-Business Suite Communities in My Oracle Support.For more information on other webcasts, please reference the Oracle Advisor Webcast Schedule.Click here to visit the E-Business Communities in My Oracle Support Note that all links require access to My Oracle Support.

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  • 2D Tile-Based Concept Art App

    - by ashes999
    I'm making a bunch of 2D games (now and in the near future) that use a 2D, RPG-like interface. I would like to be able to quickly paint tiles down and drop character sprites to create concept art. Sure, I could do it in GIMP or Photoshop. But that would require manually adding each tile, layering on more tiles, cutting and pasting particular character sprites, etc. and I really don't need that level of granularity; I need a quick and fast way to churn out concept art. Is there a tool that I can use for this? Perhaps some sort of 2D tile editor which lets me draw sprites and tiles given that I can provide the graphics files.

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  • In MATLAB, how can 'preallocating' cell arrays improve performance?

    - by Alex McMurray
    I was reading this article on MathWorks about improving MATLAB performance and you will notice that one of the first suggestions is to preallocate arrays, which makes sense. But it also says that preallocating Cell arrays (that is arrays which may contain different, unknown datatypes) will improve performance. But how will doing so improve performance because the datatypes are unknown so it doesn't know how much contiguous memory it will require even if it knows the shape of the cell array, and therefore it can't preallocate the memory surely? So how does this result in any improvement in performance? I apologise if this question is better suited for StackOverflow than Programmers but it isn't asking about a specific problem so I thought it fit better here, please let me know if I am mistaken though. Any explanation would be greatly appreciated :)

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  • Open World Day 3

    - by Antony Reynolds
    A Day in the Life of an Oracle OpenWorld Attendee Part IV My third day was exhibition day for me!  I took the opportunity to wander around the JavaOne and OpenWorld exhibitions to see what might be useful for me when selling WebLogic, Coherence & SOA Suite.  I found a number of interesting vendors and thought I would share what I found here.  These are not necessarily endorsements, but observations on companies that I thought had interesting looking products that fill a need I have seen at customers. Highly Available EBS Upgrades A few years ago I worked with a customer that was a port authority.  They wanted to tie E-Business Suite into their operations to provide faster processing of cargo and passengers.  However they only had a 2 hour downtime window to perform upgrades.  This was not a problem for core database and middleware technology, this could accommodate those upgrade timescales easily.  It was a problem for EBS however so I intrigued to find Rapid E-Suite Inc offering an 11i to 12i upgrade service that claims to require no outage.  This could be a real boon to EBS customers like my port friends that need to upgrade without disruption to their business. Mobile on WebLogic I have come across a number of customers who want a comprehensive mobile solution, connected and disconnected operation and so forth.  ADF only addresses part of these requirements currently so I was excited to discover mFrontiers Inc offering an apparently comprehensive solution that should integrate easily with Oracle SOA Suite to mobile enable a SOA infrastructure.  The ability to operate without a network is important for many applications, particularly in industries that require their engineers to enter buildings to perform maintenance or repairs, because network access is not always available – many of my colleagues don’t have mobile access from their homes because they live in the middle of nowhere – and disconnected support is crucial in these situations. Sharepoint Connector for WebCenter Content Obviously Sharepoint is an evil pernicious intrusion into a companies IT estate but it is widely deployed and many people like it but also would like to take advantage of Oracle products such as WebCenter Content.  So I was encouraged to see that Fishbowl Solutions have created a connector for Sharepoint that allows it to bring in content from WebCenter, it looks like a valuable way to maintain the Sharepoint interface end users are used to but extend the range of content by pulling stuff (technical term for content) from WebCenter.   Load Balancing The Enterprise Deployment Guides are Oracles bible on building highly available FMW environments, and each of them requires a front end load balancer.  I have been asked to help configure F5 Load Balancers on a number of occasions over my time at Oracle and each time I come back to it I find more useful features have been added to the BigIP line of load balancers that F5 sell, many of their documents are tailored to FMW.  I like F5, they provide (relatively) easy to use products that do what they say on the side of the box.  They may not have all the bells and whistles of some of their more expensive competitors but they do the job and do it well!  Besides which I like their logo! Other Stuff I saw lots of other interesting products and services, such as a lightweight monitoring tool for Coherence, Forms migration services, JCAPS migration services and lots of cool freebies to take home to the children! A Quiet Night Wednesday night was the partner appreciation event and I had decided to go back to the hotel and have an early night.  I decided to attend the last session of the day – a Maven/Hudson/WebLogic tutorial.  I got the wrong hotel for the session and snuck in 20 minutes late at the back and starting working on the hands on workshop.  One of my co-attendees raised his hand for help and as the presenter came over to help he suddenly stopped and yelled – “Is that Antony”!  It was my old friend Steve Button who used to be based in Redwood Shores but is now a WebLogic guru PM in Australia.  It was good to catch up with him.  As he yelled out a guy with really bad posture turned around to see who he was talking to, this turned out to be my friend Simon Haslan, Oracle ACE from the UK.  After the tutorial Simon and I retired to the coffee shop to catch up and share stories.  2 and half hours later we decided it was time to retire, so much for an early night but great to renew old friendships and find out what real customers are worrying about.

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  • How to recover unavailable memory in /dev/shm

    - by Alain Labbe
    Good day to all, I have a question regarding the use of /dev/shm. I use it as a temporary folder for large files to speed up processing and save IO off the HD. My problem is that some of my scripts sometimes require "forceful" interruption for a variety of reasons. I can then manually remove the files left over in /dev/shm but the memory is not returned to available space (as seen by df -h). Is there any way to recover the memory without restarting the system? I'm using LTS12.04 and most of the scripts are PERL running system call on C programs (bioinformatics tools). Thanks.

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  • How/where to run the algorithm on large dataset?

    - by niko
    I would like to run the PageRank algorithm on graph with 4 000 000 nodes and around 45 000 000 edges. Currently I use neo4j graph databse and classic relational database (postgres) and for software projects I mostly use C# and Java. Does anyone know what would be the best way to perform a PageRank computation on such graph? Is there any way to modify the PageRank algorithm in order to run it at home computer or server (48GB RAM) or is there any useful cloud service to push the data along the algorithm and retrieve the results? At this stage the project is at the research stage so in case of using cloud service if possible, would like to use such provider that doesn't require much administration and service setup, but instead focus just on running the algorith once and get the results without much overhead administration work.

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  • Learning c++ by contributing to open source projects

    - by user1189880
    I have some general programming experience with a few different languages, my most skilled being php. I want to spend a lot of time over the next year learning c++ in much more depth and then eventually get to a good enough level to find a job as a junior developer working in c++. I really struggle to find things to develop as toy programs so want to contribute to an open source project in c++ to get really stuck in to. But the projects I see on github in c++ are very large and will require a lot of knowlege to even get started. Are there any smaller projects that I can contribute to or are there any other good ideas for learning c++ from a practical level.

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