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  • Why is implementing copy-paste in a touch screen based smartphone such a big deal?

    - by EpsilonVector
    I'm not entirely sure this is on-topic, but it definitely needs a programmer's understanding to be answered, and deals with general development (for a specific scenario) as opposed to a specific piece of code. In a way it also translates into "what are the challenges in doing X in a touch screen app", and similar questions have been asked here in the past. So here it is: When Apple didn't implement copy-pasting on the iPhone since version 1 I just assumed it was a UI issue- they were waiting until they figured out a good UI for it. But now the idea is out there, and Microsoft still released Windows Phone 7 without copy-pasting, promising it'll be ready in a few months. My question is: why does this takes a few months to implement? Are there some technological challenges that are unique to programming for a touch screen that I'm not familiar with?

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  • How to use Btrfs with compression on external USB hard drive?

    - by Andre
    I would like to make use of Btrfs' transparent compression on an external drive. Which tool is best for formatting the drive? Disk Utility or GParted? How do I activate the compression? During formatting or when I mount the drive? I guess at mount time. I'm using usbmount to automatically mount newly attached devices, because nobody is logged in on the desktop. Would I have to set general default options somewhere in a system configuration file to get Btrfs mounted with compression, or would I specify this via FS_MOUNTOPTIONS in /etc/usbmount/usbmount.conf and how? Thanks!

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  • Cutting desktop power usage

    - by steevc
    I'm on a general energy saving mission. I've finally swapped my old CRT monitor for a LCD, so the next step it to optimise the PC power usage. It's using an AMD 64 X2 4600+ CPU which I know can trottle down, but seems to be running at a constant 2.4GHz. A while back I heard about Granola. I've installed it, but when I try to run it I get granola[10568]: Error opening scaling governor file '/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor' in read mode granola[10568]: Is cpufreq enabled in this kernel and do you have a CPU which supports DVFS? granola[10568]: Can't manage DVFS for any CPUs I'm happy to use other applications if Granola is not optimal or viable.

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  • What data is available regarding cowboy coding?

    - by Christine
    I'm not a programmer; I'm a freelance writer and researcher. I have a client who is looking for stats on certain "threats" to the apps market in general (not any specific app store). One of them is cowboy coding: specifically, he wants to see numbers regarding how many apps have failed to function as intended/crashed/removed because of errors made by, in essence, sloppy coding. Note that I'm not here to debate the merits of cowboy coding, and whether or not it is sloppy. Is there any data about this type of development?

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  • Power management issues on an Asus N55

    - by Andrea Borga
    I noticed that with respect to Win7 on my Asus N55 Ubuntu 12.04 tend to overheat the system. After startup the fan controller takes control of the fan, I could here it slowing down, after a few second following a login the fan increases its speed again. Though there are no processor hungry process: top shows only Xorg consuming 4%. Even with the system monitor the CPUs load look ok. Is it a power management related problem? This can cause battery life troubles in general, and electronics is never happy to be overheated. Is there a better tool to root the cause of the issue?

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  • Someone tell me why people writing GNU code use { like that?

    - by Deus Deceit
    I saw the rules on how to type code for UNITY project or GNU software in general. Why do they write code in such an ugly form? Is there a particular reason why they don't put brackets the way (from what I know) most people do? Why like this: for (i = 0; i < 5; i++) { //do something } and not like this: for (i = 0; i < 5; i++) { //Do something } or this: for(i = 0; i < 5l i++) { //Do Something } ???

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  • can't see myself in Skype video call

    - by seb
    I'm running 12.04 and I've installed skype via the software centre. As with 11.10 everything works fine with 12.04 as well. There is only one thing that does not work. I can't see myself in Skype video calls. The video call works fine, I can see the other side the other side can see me. Buid in microphone works. If I click on 'show myself' during the video call nothing happens. I know that it works on Ubuntu in general as I had it working a while back on a different machine (Xubuntu 11.04). Could that be related to the GPU? I'm now on a intel/nvidia one. Any Ideas where I can hunt for some options or tweaking?

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  • How Stuff Works: Fiber Optic Cables [Science]

    - by Jason Fitzpatrick
    Most people are familiar with the general concept of fiber optic cables–light as a method of data transmission–but how do they really work? Find out in this informative video. Bill Hammack, of Engineer Guy Videos, shows us how fiber optic cables work using–of all things–a bucket and a laser. Check out the above video for a glimpse inside how fiber optic cables work and how your analog voice can go to from your phone’s handset to a digital stream and then back to analog sound for the benefit of your friend on the end of the fiber optic transmission cable. Fiber Optic Cables: How They Work and How Engineers Use Them to Send Messages [YouTube] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • Identity verification

    - by acjohnson55
    On a site that I'm working on, I'm trying to find ways of enforcing a one-person, one-account rule. In general, we'd like to do this by providing options to authenticate users with third-party services that provide this assurance. For example, it's possible to authenticate with Facebook and check whether the user is considered "verified" by Facebook (which means they must have provided either a phone number or credit card). This is roughly the level of identity verification we require--we're not doing banking or anything like that. But we want to give the user options. My question is, who else, besides Facebook, provides this? (uncertain of the proper SE forum, please comment if there's a better SE site to ask this)

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  • Are there any books dedicated to writing test code? [on hold]

    - by joshin4colours
    There are many programming books dedicated to useful programming and engineering topics, like working with legacy code or particular languages. The best of these books become "standard" or "canonical" references for professional programmers. Are there any books like this (or that could be like this) for writing test code? I don't mean books about Test-Driven Development, nor do I mean books about writing good (clean) code in general. I'm looking for books that discuss test code specifically (unit-level, integration-level, UI-level, design patterns, code structures and organization, etc.)

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  • How important are unit tests in software development?

    - by Lo Wai Lun
    We are doing software testing by testing a lot of I/O cases, so developers and system analysts can open reviews and test for their committed code within a given time period (e.g. 1 week). But when it come across with extracting information from a database, how to consider the cases and the corresponding methodology to start with? Although that is more likely to be a case studies because the unit-testing depends on the project we have involved which is too specific and particular most of the time. What is the general overview of the steps and precautions for unit-testing?

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  • Career guidance/advice for Junior-level Software Engineer [closed]

    - by John Do
    I have quite a few questions on my mind, so please bare with me. Please don't feel obligated to answer all of them, any as you choose will do. I'd appreciate if you could share some insight on any of these. Before I begin, some context: I currently have almost two years of professional experience as a Software Engineer, mainly developing software in Java. At this point, I feel that I have reached the peak in my career growth at the current company I am at and therefore I am looking for a new job, ideally again, as a Software Engineer. I have been interviewing for the past few months casually but have not had luck with companies I have a passion for. So, in no particular order - 1) In general, what are your thoughts on having graduate degrees in CS / Software Engineering. How much does it influence a salary increase, and do you think it's beneficial when working on real-world problems? I get the sense that a graduate degree in the field is trivial unless you really have a passion for research. 2) In general, in professional practice, how often had you have to write your own data structures and "complex" algorithms from scratch? In my own work, I have found myself relying mainly on third-party frameworks and the Java standard library to implement solutions as per business requirements. What are your thoughts on this? 3) In terms of resume, I feel the most ambivalent here. I want to be able to "blemish" my resume to a certain extent so that it stands out from others', but at the same time I do not want to over-exagerate my abilities. How do you strike a balance here? For example: I say that I am proficient in Java with data structures and algorithms. This is obviously a subjective and relative statement. I've taken the classes in my undergrad, and I've applied it in my work experience. What I feel as "prociency" can be seen as junior-level to others. How do you know what to say? Most of the time, recruiters (with no technical background) will be looking for keywords that stand out. This leads me to my next question (4). 4) Just from interviewing for the past few months (and getting plenty of rejections), I've come to realize that I may not be as proficient in data structures and algorithms as I thought I was. Do you think it's a good idea to remove the "proficient in java/data structure and algorithms"? I feel that being too hoenst on the resume will impede me from scoring opportunities to even have an interview with top-notch companies. What are your thoughts? 5) What is the absolute "must-have" knowledge going into a technical interview? I've been practicing several algorithmic and data sturcture problems now, and I feel that my abilities to solve arbitrary problems efficiently has not gotten significantly better. Do you think these abilities are something innate - it's either you have in you, or you don't? How can you teach yourself to learn, if you will? 6) How easy is it to go from industry/function to the next? I work mainly with backend technologies and I'm now interested in working with the frontend, i.e javascript,jquery,php or even mobile development. In your own experience, how did you not get pidgeon holed in your career? I feel that the choices you make now ultimately decide your future. As cliche as it sounds, I think it may be true. Here's what I mean: you've worked mainly as a backend engineer, people are interested in you doing the same thing since you've already accumulated experience in that function. How do get experience in a new function if people won't accept you because you don't already have it? It's a catch 22, you see... Are side projects the only real way to help you move from one function to another that you're truly interested in? For example: I could start writing my own mobile applications, even though I've worked mainly on the backend. Thanks so much for the long read. As a relatively new engineer to the real world, I am very humble and would like those who are experienced to shed some light. Thank you so much.

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  • Hot-hot-hot for jobs in Java and mobile software

    - by hinkmond
    It's hot-hot-hot! The market for Java and mobile developers keeps growing hotter, and hotter--so says the latest Dice survey. See: Dice survey says Java & Mobile are tops Here's a quote: The market for mobile developers is expanding faster than the talent pool can adapt, a Dice survey indicates. Software developers in general—as well as Java, mobile software and Microsoft .Net developers in particular—are in short supply today. Those fields represent four of the top five most difficult positions IT managers are looking to fill... ... The New York/New Jersey metro area led the country with 8,871 positions listed... So, if you are looking to get into software development get crackin' in learning Java mobile programming and move to NY or NJ. Let's go Mets! Hinkmond

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  • Creating a Template Like System in cPanel

    - by clifgray
    I am creating a medium sized website using cPanel and their File Manager system and the majority of my pages are going to be the same with a different title and content section and I wanted to see if there is a system for making one general template file and then having all the other pages inherit from that file so all I have to do is have a content and title section and the rest of the links, headers, and whatnot can be changed throughout the site by just changing one file. Is there anything like this? I have used Jinaj2 in python and a few other systems for other server scripting languages but I am not sure how to implement it with cPanel.

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  • What algorithm(s) can be used to achieve reasonably good next word prediction?

    - by yati sagade
    What is a good way of implementing "next-word prediction"? For example, the user types "I am" and the system suggests "a" and "not" (or possibly others) as the next word. I am aware of a method that uses Markov Chains and some training text(obviously) to more or less achieve this. But I read somewhere that this method is very restrictive and applies to very simple cases. I understand basics of neural networks and genetic algorithms(though have never used them in a serious project) and maybe they could be of some help. I wonder if there are any algorithms that, given appropriate training text(e.g., newspaper articles, and the user's own typing) can come up with reasonably appropriate suggestions for the next word. If not (links to)algorithms, general high-level methods to attack this problem are welcome.

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  • What is the difference between sudo X and running X as root?

    - by Raffael
    My question is asking regarding a specific observation that I would like to understand. I just tried to install the package rJava in R and failed even though I prefaced the installation as suggested by the manual with: sudo R CMD javareconf Then I came across this comment: Using sudo and running as root are not exactly the same thing. – Jon7 Desparate as I was I tried it: sudo su R CMD javareconf And to my surprise I suddenly could install that package. Sorry for the lenghty introduction but I wanted to give you a context to prevent answers like here. The question does not aim at specifically the described observation - rather at those "things" in general on Ubuntu. My question is: How could this be possible? What is the difference between sudo X and runnding X as root?

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  • How exactly does XNA's SpriteBatch work?

    - by David Gouveia
    To be more precise, if I needed to recreate this functionality from scratch in another API (e.g. in OpenGL) what would it need to be capable of doing? I do have a general idea of some of the steps, such as how it prepares an orthographic projection matrix and creates a quad for each draw call. I'm not too familiar, however, with the batching process itself. Are all quads stored in the same vertex buffer? Does it need an index buffer? How are different textures handled? If possible I'd be grateful if you could guide me through the process from when SpriteBatch.Begin() is called until SpriteBatch.End(), at least when using the default Deferred mode.

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  • Admin form that generates an email confirmation ends up in SPAM [duplicate]

    - by PJD Creative
    This question already has an answer here: How can I prevent my mail from being classified as spam? 10 answers I have an admin form that I have setup for a client, that generates an email confirmation from a template I have designer... It works really well but it ends up in spam some of the time, and this is real frustrating as it is just confirming some details for the customer of what they have just booked, not at all spam, and is accessed via a page where the admin requires login. Any suggestions as to why this may end up in spam. It does have dollar signs ($$) as it is confirming a price, im assuming this is one problem, the rest of it is just general dates and info about the confirmation. Is there any suggestions on how to get this out of spam? thanks in advance

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  • Make methods that do not depend on instance fields, static?

    - by m3th0dman
    Recently I started programming in Groovy for a integration testing framework, for a Java project. I use Intellij IDEA with Groovy plug-in and I am surprised to see as a warning for all the methods that are non-static and do not depend on any instance fields. In Java, however, this is not an issue (at least from IDE's point of view). Should all methods that do not depend onto any instance fields be transformed into static functions? If true, is this specific to Groovy or it is available for OOP in general? And why?

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  • What makes for a good JIRA workflow with a software development team?

    - by Hari Seldon
    I am migrating my team from a snarl of poorly managed excel documents, individual checklists, and personal emails to manage our application issues and development tasks to a new JIRA project. My team and I are new to JIRA (and issue tracking software in general). My team is skeptical of the transition at best, so I am also trying not to scare them off by introducing something overly complex at the start. I understand one of JIRA's strengths to be the customized workflows that can be created for a project. I've looked over the JIRA documentation and a number of tutorials, and am comfortable with the how in creating workflows, but I need some contextual What to go along with it. What makes a particular workflow work well? What does a poorly designed workflow look like? What are the benefits/drawbacks of a strict workflow with very specific states and transitions to a looser workflow, with fewer, broader defined states and transitions

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  • Why isn't there a python compiler to native machine code?

    - by user2986898
    As I understand, the cause of the speed difference between compiled languages and python is, that the first compiles code all way to the native machine's code, whereas python compiles to python bytecode, to be interpreted by the PVM. I see that this way python codes can be used on multiple operation system (at least in most cases), however I do not understand, why is not there an additional (and optional) compiler for python, which compiles the same way as traditional compilers. This would leave to the programmer to chose, which is more important to them; multiplatform executability or performance on native machine. In general; why are not there any languages which could be behave both as compiled and interpreted?

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  • High Usage of RAM by wxPython's GUI and need some advice to reduce it

    - by user67024
    I've recently developed a GUI in wxPython for windows platform. It contains a five tabs, 4 of them are just richTextCtrl boxes and the other one has controls for uploading files, buttons, textctrls, a slider etc.. As I was new to GUI development in Python, I used wxFormBuilder to generate some of the code using a good amount of sizers. So, now the problem is that the GUI starts off with a initial memory of around 40MB which is too much for such a simple application (Or so I think) . Also, when the functions handling the functions use huge lists as the program is for debugging large data logs and identifying the problems in'em implying that I can't afford memory for GUI. So, how can I reduce that start working memory size? Is it a general issue in wxPython? And currently trying use profilers but not sure if it's going to help.

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  • Arbitrary projection matrix from 6 arbitrary frustum planes

    - by Doub
    A projection matrix represent a tranformation from the camera view space to the rendering system clip space. In other words, it defines the transormation between a 6-sided frustum to the clip cube. The glOrtho and glFrustum use only 6 parameter to define such a projection, but impose several constraints on the frustum that will get projected to the clip cube: the near and far planes are parallel, the left and right planes intersect on a vertical line, and the top and bottom planes intersect on a horizontal lines, both lines being parallel to the near and far planes. I'd like to lift these restrictions. So, from the definition of the 6 frustum side planes (in whatever representation you see fit), how can I compute a general projection matrix?

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  • High CPU usage on Pong clone

    - by max
    I just made my first game, a clone of Pong, using OpenGL and C++. But its using ~50% of the CPU, which I guess is very high for a game like this. How can I improve that? Can you please look up my code and tell me what all things I am doing wrong? Any feedback is welcome. http://pastebin.com/L5zE3axh Also it would be extremely helpful if you give some general points on how to develop games in OpenGL efficiently.. Thanks in advance!

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  • Static GitHub powered blog engine

    - by Daniel Cazzulino
    Blog engines were the new &quot;cool thing to write&quot; after the fever of writing a new DI framework was over. It was kinda like the new &quot;hello world++&quot; example. Almost every single engine uses a database of some sort to keep posts and comments. Almost every one is not leveraging the web as a consequence ;) I was intrigued by the possibilities that a flexible and general-purpose hosting solution like Github could offer for a static blog engine: basically keeping plain markdown/HTML/razor/WLW/whatever files that through a publish/build time process generate static files that pass for a &quot;blog engine&quot;. GitHub even supports custom domain names, so why not? Such an &quot;engine&quot; would have a number of benefits: Plain CSS styling Arbitrary JavaScript Leverage the web infrastructure (caching, CDNs, etc.) ...Read full article

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