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  • Does learning a functional language make a better OOP programmer?

    - by GavinH
    As a Java/C#/C++ programmer I hear a lot of talk about functional languages, but have never found a need to learn one. I've also heard that the higher level of thinking introduced in functional languages makes you a better OOP/procedural language programmer. Can anyone confirm this? In what ways does it improve your programming skills? What is a good choice of language to learn with the goal of improving skills in a less sophisticated language?

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  • Using only password to authenticate user (no "username" field)

    - by Guy
    I am creating a client access system, to allow manage invoices, make payments, access information about their products and information/functionality alike. Supposedly there are less than 1000 clients. Would there be any security threat to use only password (UUID v4 strings) to authenticate user? My thoughts: There is virtually no probability of collision or success with brute-force attack. http://en.wikipedia.org/wiki/UUID#Random%5FUUID%5Fprobability%5Fof%5Fduplicates User friendly (one click go) It is not intended to be remembered

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  • Can we compare programming languages ergonomically?

    - by Nick Rosencrantz
    For instance, would Python be a more ergonomic programming language since it doesn't force you to make curly braces which requires the AltGr key. Also Python usually requires less code to achieve the same or am I being biased towards Python and PHP actually is an ergonomical and comfortable language despite forcing the programmer to use the AltGr key? Isn't forcing the programmer to use the AltGr key not very ergonomical?

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  • Winter4Net

    - by csharp-source.net
    Winter.NET is a lightweight Spring-like inversion of control (IoC) container for .NET platform. Its main features: - XML-based objects graph configuration - compact: implements conceptually full and minimum-required features of Spring-compatible XML configuration (assembly size is less than 50kb). - fast: optimized for huge component graph configurations and small memory consumption - .NET integration: supports System.ComponentModel interfaces

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  • How do I alter/customize the GRUB boot menu for Ubuntu 12.10?

    - by Kyle Payne
    I use a shared computer, so I need to make it user friendly for my-less-than-computer-knowledgable friend currently have Ubuntu 12.10 installed I would like to change the GRUB menu so that Windows 7 is at the top of the list (thus allowing the automatic timeout to automatically select it on startup) and Ubuntu down below I've already used the information used at { How do I change the grub boot order? } and that didn't work.

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  • How to work with scenes in a 2D game

    - by Anearion
    I'm a java/android programmer, but I don't have any experience in game programming, I'm already reading proper books, like "Pro Android Games", but my concerns are more about the ideas behind game programming than the techniques themselves. I'm working on a 2D game, something like Cluedo to let you understand the genre. I would like to know how should I act with the "scenes", for example, a room with a desk, TV, windows and a lamp. I need to make some items tappable and others not. Is it common to use one image (invisible to the user) with every different item a different color, then call the getColor() method on the image? Or use one image as background, and separate images for all the items? If the latter, how can I set the positioning? and should I use imageView or imageButton? I'm sorry if those are really low quality questions, but as "outsider" ( I'm 23 and still finishing my university ) it's pretty hard learn alone.

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  • Brand Named Cartridges or Recycled?

    When it comes to shopping, as consumers we always have a choice, we can either go for the well-known brand name and get a good quality product but at a higher price, or we can pay less and do without... [Author: Kathryn Dawson - Computers and Internet - June 03, 2010]

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  • Clicking on clues and other objects in a 2D cluedo like game

    - by Anearion
    I'm a java/android programmer, but I don't have any experience in game programming, I'm already reading proper books, like "Pro Android Games", but my concerns are more about the ideas behind game programming than the techniques themselves. I'm working on a 2D game, something like Cluedo to let you understand the genre. I would like to know how should I act with the "scenes", for example, a room with a desk, TV, windows and a lamp. I need to make some items tappable and others not. Is it common to use one image (invisible to the user) with every different item a different color, then call the getColor() method on the image? Or use one image as background, and separate images for all the items? If the latter, how can I set the positioning? and should I use imageView or imageButton? I'm sorry if those are really low quality questions, but as "outsider" ( I'm 23 and still finishing my university ) it's pretty hard learn alone.

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  • WinTV-HVR-1900 no picture in VLC

    - by nLinked
    I've connected a Hauppauge WinTV-HVR-1900 to my Ubuntu 10.10 PC and used the instructions here to install the firmware and test that it is detected using dmesg. Detection is successful. The WinTV is connected to my TV using component connections. I run this command to enable the component interface: v4l2-ctl -i 1. Then I use cat /dev/video0 test.mpg, and that file is created and plays perfectly with video and sound. However, when I try to play /dev/video0 in VLC Player (and other players), I just get a black screen. I also try the v4l2-ctl -i 1 command before I try it in VLC, but I still get a black screen, and when I use v4l2-ctl -I, it shows it has connection 0 again (Television), so it reverts back to connection 0 instead of connection 1 (component). So I'm a little stuck with getting VLC to get a picture, even though the CAT command works fine. Anything I can try?

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  • Assessing Relative Maintainability

    - by João Bragança
    We (a contractor, actually) are implementing an off the shelf system to replace a legacy homegrown system for the core domain of the company (designing widgets). Unfortunately both systems will have to run concurrently for some time, as the product just isn't ready yet. Also, the decision was made to only migrate some of the widgets from the legacy system, based on date of last sale activity. Later on a new requirement came down: certain people in the company, most of them outside of the widget development context, want to search all widgets. The search results screen has 3 pieces of data: a GUID, a human readable id that is searchable, and a brief description (may need to be searchable in the future). In the widget details, there will be multiple screens. These screens align very well along SOA / bounded context lines - a screen for marketing data, a screen for sales history, etc. UML ahead! I am probably using the wrong kind of arrows here so please forgive me. The current solution - which is not in production yet - is something like the following: Both systems will be queried and the controller will merge the results. The new system has its own proprietary query language (we've alleviated this a bit with a LINQ provider). It also puts a lot of data on the wire. 15 search results typically run about 60k of unintelligible SOAP-wrapped xml. So I would prefer to avoid querying this system directly. These two systems publish events to help us integrate with other systems, mainly an ERP system. One of these events contains all the data necessary for the search screen. I proposed the following alternative: However I am being told that 'adding another database' will create more maintenance down the road. However, I believe this to be false, as I had to add a relatively simple feature that took several hours longer than anticipated because of this merging code. I want to get a feel for which system is more maintainable in the long run. I personally have not had the burden of maintaining any large system. I want something more than my gut. Specifically I'd like to know if having more, specialized physical databases is more or less maintainable than having less larger physical databases.

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  • What are the common pitfalls that would stop Authorised Key SSH access, and how do I find and correct for them?

    - by Ashimema
    EDIT: This question was reworked to make it more useful to the community and less specific to me. Questions seem to come up reasonably often regarding ssh and problems with authorised keys access, but very few seem to have a clear answer anywhere; Server keeps asking for password after I've copied my SSH Public Key to authorized_keys ssh not accepting public key how do I use ssh with key access in 11.10 passwordless ssh not working So, In the communities opinion, what is the tried and tested method for getting to the bottom of such problems?

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  • Windows 7 Display Color Calibration Wizard

    Windows 7 comes complete with plenty of new features for you to get the most out of your PC. While some of them may be obvious the operating system has some tools that can help make your life easier. This series will discuss those tools and how to use them. To kick things off let s take a look at the Display Color Calibration Wizard.... Comcast? Business Class - Official Site Learn About Comcast Small Business Services. Best in Phone, TV & Internet.

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  • How to "reverse-backport" a package available on earlier Ubuntu distribution to later Distribution?

    - by Adam Ryczkowski
    There are 4 packages I am using on 12.04 which are not available on 12.10: xkcd-browser ;-) cuttlefish bluphone xserver-xorg-input-synaptics (it allows for touchpad rotation that could go along screen rotation with randr) Is there any way of more-or-less automatic reverse-backporting? (I know, that one "solution" is to wait. But unless I know for how long I should do it, it doesn't solve anything.)

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  • After update, audio won't play throw hdmi cable

    - by ckhenderson
    Yesterday (June 7th) I faithfully updated a bunch of stuff through update manager (though I'm not sure what since I never read what I updated any more because I'm a bad person). Afterward, I discovered that I could no longer play audio through my tv via HDMI. The sound settings menu seems to have completely changed and the shell script that I wrote a week ago (with much pain and effort as I had never before written a shell script) to toggle between my laptop speakers and the HDMI cable output no longer works. When I type in pactl set-card-profile 0 output:hdmi-surround in the command line I get Failure: No such entity Presumably this means something with Pulse Audio changed but, while I'm learning a lot about the inner workings of Ubuntu/Linux, I'm not an expert and would love some help. EDIT: So I noticed that pacmd set-card-profile 0 output:hdmi-stereo seems to get everything working. Still, shouldn't there be a way to do this through the GUI as well?

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  • Companion Book for Cormen

    - by Robert S. Barnes
    I asked this question on Stackoverflow and they suggested it was more appropriate here. I"m taking a course soon based on the first fourteen chapters of Cormen's Introduction to Algorithms. The course is based on a translation of the 2003 edition. I have two questions: Is it recommended to get the newer 2009 edition and what are the differences? Can anyone recommend a good companion text which has more worked problems and less, "this clearly works" type explanations?

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  • What is the best shopping cart or implementation for unlimited users posting unlimited products? [closed]

    - by Matt
    I've been working with x-cart much lately, and I was thinking about using it for a much larger site, but I don't know if it can handle what I'm looking for. I need a platform or strategy that can allow for as many users as possible where each can post multiple products (hopeful up to a hundred, but that's less important), but in their own private catalogs. So what am I looking for? With x-cart, I'm used to customizing it with jquery, smarty, and php, so I can handle that much.

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  • Graphics card support

    - by Daryl
    Brand new user to Ubuntu and Linux. Quick question that I think already know the answer to: Does Ubuntu 11.10 have an updated driver for my graphics card? I was planning on being able to s-video out and watch videos on my tv like I could when I had Vista installed. daryl@daryl-Aspire-3050:~$ lspci -nn | grep VGA 01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS482 [Radeon Xpress 200M] [1002:5975] ATI Radeon Xpress 1100 is the actual card. As it is, Ubuntu is not recognizing when I plug an s-video cable into my laptop. I've narrowed it down to using what I think is a generic driver because all of the s-video enable commands I found and tried have failed.

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  • From Co-op to fulltime help with salary negotation [closed]

    - by Peter
    Hey I'm a coop student that worked at a particular medium size printing company for 8 months. I had a good time it was lax, sometimes insufficiently challenging but none the less I learned a whole lot. I stuck with them for another 5 months (including this month) at the same rate I was paid then, doing testing work, tool development, taking care of emergencies when the lead developers were away, and other smaller projects and now bigger projects and problem handling (bad printer output etc.). I know their website inside out (ecommerce), and I know their printing software inside out and have made many changes to them both without a hitch. I have also done a lot of refactoring of the existing code base which as far as Im concerned, I believe am the only one to do those sorts of restructuring even though there is constant talk about it. I guess the unit testing paid off and lets me see the value in modularity if even a tad more. Never the less I have faith in my skill and the restructuring I did turned out better than I had imagined . Now the problem is that I finish school next month and so I asked for a full time spot the month after. They have been expanding and have hired a new guy a few months after my coop spot, and just now they hired a new guy to deal with the CRM application. The lead developer who wrote all of the software had left 5 months ago so it was up to all of us to learn what he had done over 4 years (including db, networking). So now I'm afraid that if I assert myself for a salary similar to the other guys, which I believe I am certainly on par with, that I would be seen as ingrateful. It's hard to flip a switch and say, hey double my pay, although when I'm working with their bread and butter (printers) and writing new features, refactoring the whole application for extensibility. I love it regardless of pay. I also feel maybe I'm replaceeble, although nobody knows the website better than myself and the lead web dev (not by a long shot), and nobody knows the printer software/drivers better than myself. I just thought they would have brought up a raise earlier on, and now it feels like they don't value my work. I'm also tired of worrying about it. I think my question is, well what do I do next?

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  • (Where) Can I learn creating art for my 2D games?

    - by Poorly paid coder
    I'm currently bad at drawing. If I want to create something looking acceptable, it usually takes me hours and hours to fiddle around just to get the basic looks right. I think that I'm not completely skill-less, I just lack simple drawing techniques.. Am I a hopeless case? Where is a good place to start out in drawing for 2D games? I'd like to be able to create acceptably good backgrounds, terrains / tilemaps, characters and weapons

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  • Why won't videos on a particular website play under Ubuntu 13.04?

    - by Sadi
    Very oddly, I cannot watch any videos a TV channel website, for example this one: http://www.kanald.com.tr/GalipDervis/Videolar/ I can see from the frame source that it contains an embedded Adobe Flash video and some Java scripts (all of which don't pose any problems elsewhere). I've tried different web browsers (Chrome/Chromium/Firefox), but it seems I have some sort of video codec problem in my system. I have installed all sorts of gstreamer plugins, codecs, etc. (maybe too many?) to avoid such problems, but strangely I can watch these videos using Linux Mint 15 Live Session on the same machine. I wonder how I can find out why a particular video (like this one) won't work on my system?

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  • The Best Online SEO Tools

    There are many SEO tools out there, but one of the reasons why people rank for the keyword that is in the title is because a lot of people are linking to just the URL. I register my domains with all my keywords in them because you have to do less off page optimization.

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