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  • What language, or language feature, do you wish made it to the mainstream?

    - by Macneil
    Some languages in the past have been influential without ever reaching wide adoption. For example, many languages owe much to the design of Algol 68, even though few compilers were ever written for it. The Dylan language was killed by Apple but had a clean and interesting design. What other programming languages had cool ideas but-- for whatever reasons-- didn't make it to the mainstream? Is there an interesting language feature that you wish your main language had? Is there a feature ahead of its time that we'll soon see used?

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  • Best way to deal with a system without a user acceptance / testing phase

    - by billy.bob
    Historically I've been able to get away with making small changes to an in-house helpdesk system riding on a LAMP stack and just making a backup prior to editing. This has no user acceptance / testing phase and I work on the live .php files directly. However now the requirement has arisen that will require a bit more coding done, and I'm obviously not particularly happy about making these changes without a framework to support me. What would the best way forward be? I could just make another backup I suppose.

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  • Cyclic Dependencies.

    - by PhilCK
    Are cyclic dependencies a common thing in games dev? I ask as I keep getting into situation where I'm using and have been told more than once that they should be avoided. I am wondering if this is just a what people say as a general rule of thumb in the software development business. and that the nature of game programming produces such dependencies. // Foo #include <Bar.hpp> class Foo { bar& m_bar; }; and // Bar class Foo; class Bar { Foo* m_foo; }; I do this alot in Ruby, but dynamic languages are more forgiving in this instance, where as static ones, not so much.

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  • how do you read from system.out in Java [closed]

    - by Dan
    I'm trying to create a word scramble game and so far I have taken a vector of randomly assorted strings that contains both words and hints and split them into two vectors. I have randomly scrambled the word and set this all up in text boxes. Right now I'm stuck because I have a text box that takes input but I'm not sure how to read that in? I want the user to type the unscrambled word into the text box and have it calculate as correct and move on to the next word immediately. I also don't know how to get the keys working. I want the "?" character to be the hint button that shows the hint. At the moment the hint box works if I type the question mark in using the System.in but it doesn't work if I type it directly in to the text box. The characters are showing up in the text box but nothing is working after that.

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  • Online training modules / programs for best software engineering practices?

    - by Steve
    We're taking over a team in a foreign country and the programming standards there aren't up to par with US standards. Folks there lack the formal training and basic understanding of computing concepts of databases, how computers work, what good software engineering practices are. Short of sending these ppl to college again, are there good online courses available that we can enroll them into so that they can upgrade their skills? I am specifically looking for online training courses, but recommendations for books are also welcome. This is language-agnostic.

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  • initramfs - Unable to find a medium containing a live file system

    - by LittleBobbyTables
    I'm desperately trying to install ubuntu 12.10 64bit on my new Ultrabook. Its a Sony T13 with 8gb ram, 256gb ssd, i7, windows 8. I have an extra partition, D: "UBUNTU" already created with about 30gb space using FAT32. Ubuntu is MD5 checked, on a previously working USB stick using UNetBootin. Grub loads fine When I ask to test out Ubuntu ("Try ubuntu without installing") it shows the purple loading screen for a bit then brings up this error in a busybox terminal: initramfs - Unable to find a medium containing a live file system Things I've tried that don't work: Different versions of Linux (Fedora, Arch, SL, even gParted) Using USB2/3 - No difference Legacy or UEFI - different interface, but same error BIOS has no option for anything "ACHI" related I have read through tons of other people having this problem and diligently tried all the above solutions, with no luck.

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  • Simple vs Complex (but performance efficient) solution - which one to choose and when?

    - by ManojGumber
    I have been programming for a couple of years and have often found myself at a dilemma. There are two solutions - one is simple one i.e. simple approach, easier to understand and maintain. It involves some redundancy, some extra work (extra IO, extra processing) and therefore is not the most optimal solution. but other uses a complex approach,difficult to implement, often involving interaction between lot of modules and is a performance efficient solution. Which solution should I strive for when I do not have hard performance SLA to meet and even the simple solution can meet the performance SLA? I have felt disdain among my fellow developers for simple solution. Is it good practice to come up with most optimal complex solution if your performance SLA can be met by a simple solution?

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  • How to add menu items in System menu

    - by Leonardo Montenegro
    I want to insert an item to System menu: Help and Support About Gnome About Ubuntu More specifically, I want to insert a new item under "About Ubuntu". Trying with alacarte doesn't work. Cloning "ubuntu-about.desktop" file and changing his attributes doesn't work too (I even rebooted the computer after that). Searching for categories in "/usr/share/desktop-directories" haven't worked too, and searching for "core" and "about" entries in /etc/xdc/menus neither. It isn't as easy as I thought it would be. Anyone have any suggestions?

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  • Is there any reason to use C++ instead of C, Perl, Python, etc.?

    - by Ehsan
    As a Linux (server side) developer, I don't know where and why should I use C++. When I'm going to performance, the first and last choice is C. When "performance" isn't the main issue, programming languages like Perl and Python would be good choices. Almost all of open source applications I know in this area has been written in C, Perl and Python, Bash script, AWK and even PHP, but no one goes to use C++. I'm not discussing about some other areas like GUI or web application, I'm just talking about Linux and about CLI and daemons. Is there any satisfiable reason to use C++?

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  • Project planning and customer tracking system

    - by Daniel Hollands
    First off, sorry if this is the wrong 'stack' site, but it seemed like a good place to start. I'm happy to report that my services as a web developer are starting to be in quite a lot of demand, and I have a few existing and potentially new customers all lining up - but I'm finding it very hard to keep track of everything. What I'm hoping for is some (preferably web-based) system which I can use to keep track of who my customers are, the various projects that I've got going on for them, and (if possible) the individual sub-tasks that make up each project. What would be even better is if the relevant customer was able to log into the site, and see the process of their projects. I do hope you know what I'm talking about, and that you'll be able to offer some suggestions of either web-base sites that offer something along these lines, or of some open source solution or something like that? Thank you

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  • Compute if a function is pure

    - by Oni
    As per Wikipedia: In computer programming, a function may be described as pure if both these statements about the function hold: The function always evaluates the same result value given the same argument value(s). The function result value cannot depend on any hidden information or state that may change as program execution proceeds or between different executions of the program, nor can it depend on any external input from I/O devices. Evaluation of the result does not cause any semantically observable side effect or output, such as mutation of mutable objects or output to I/O devices. I am wondering if it is possible to write a function that compute if a function is pure or not. Example code in Javascript: function sum(a,b) { return a+b; } function say(x){ console.log(x); } isPure(sum) // True isPure(say) // False

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  • What makes a good developer / system documentation?

    - by deamon
    Much time is wasted to get new developers started with existing software systems, because there is no good documenation. But what makes a system documentation good? One thing is a good API documentation like the Java API doc, but how to transfer the "bigger picture" and other things that cannot be placed in the API doc? One constraint is that it should not be to hard and time consuming to write the docs, because that is one reason why it is omitted so often. So, what makes documentation good?

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  • What's special about currying or partial application?

    - by Vigneshwaran
    I've been reading articles on Functional programming everyday and been trying to apply some practices as much as possible. But I don't understand what is unique in currying or partial application. Take this Groovy code as an example: def mul = { a, b -> a * b } def tripler1 = mul.curry(3) def tripler2 = { mul(3, it) } I do not understand what is the difference between tripler1 and tripler2. Aren't they both the same? The 'currying' is supported in pure or partial functional languages like Groovy, Scala, Haskell etc. But I can do the same thing (left-curry, right-curry, n-curry or partial application) by simply creating another named or anonymous function or closure that will forward the parameters to the original function (like tripler2) in most languages (even C.) Am I missing something here? There are places where I can use currying and partial application in my Grails application but I am hesitating to do so because I'm asking myself "How's that different?" Please enlighten me.

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  • How are minimum system requirements determined?

    - by Michael McGowan
    We've all seen countless examples of software that ships with "minimum system requirements" like the following: Windows XP/Vista/7 1GB RAM 200 MB Storage How are these generally determined? Obviously sometimes there are specific constraints (if the program takes 200 MB on disk then that is a hard requirement). Aside from those situations, many times for things like RAM or processor it turns out that more/faster is better with no hard constraint. How are these determined? Do developers just make up numbers that seem reasonable? Does QA go through some rigorous process testing various requirements until they find the lowest settings with acceptable performance? My instinct says it should be the latter but is often the former in practice.

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  • Solo vs Team development and the consequences

    - by Mathieu
    Hi, I've been programming for a while on different languages. I never really studied that at school nor worked on a team of more than 2 (me included). Still, I've been a professional developper for over three years. Last year, I took over my first C# project and it ended up being fine. I can't help but think that because I learned and worked alone I must be missing some concepts/hints/edge. For those who've been solo developpers before being part of a team, can you share your experience? Did you realize you were missing something? Did you find it hard? Did you learn faster after? Thank you!

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  • One method with many behaviours or many methods

    - by Krowar
    This question is quite general and not related to a specific language, but more to coding best practices. Recently, I've been developing a feature for my app that is requested in many cases with slightly different behaviours. This function send emails , but to different receivers, or with different texts according to the parameters. The method signature is something like public static sendMail (t_message message = null , t_user receiver = null , stream attachedPiece = null) And then there are many condition inside the method, like if(attachedPiece != null) { } I've made the choice to do it this way (with a single method) because it prevents me to rewrite the (nearly) same method 10 times, but I'm not sure that it's a good practice. What should I have done? Write 10 sendMail method with different parameters? Are there obvious pros and cons for these different ways of programming? Thanks a lot.

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  • Transiltion from maintenance programing to design

    - by andrew wang
    What to do guys do develop a design for a s/w for a given set of requirements? I like many people joined a Semiconductor MNC and got stuck in maintenance for quite a couple of years. My work was usually changing a lines of code for windows drivers supplied by my company or a couple of small script (style like) C programs for validating h/w. As a result I developed the bad habit of 'programming by coincidence'. I have not developed the ability for designing tools/programs from scratch. I was the only s/w member of the local team and thus some grunt work from the well established other site of the company came to be done by me. Now I have moved to a different company and thus finding developing from scratch very difficult. How do I unlearn my bad habit and develop this ability of designing s/w and then coding it ?

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  • How do I create a PPA for a working program?

    - by d3vid
    Let's assume I have a working application written in C, C++ or Python. I want to create a Launchpad PPA so others can easily install it from a package. Please give step by step instructions for doing this from beginning to end. (Or provide a link that does the same ;) Does the programming language matter? (Could it be a bash script?) Do I need to add anything to my build? Where should the build install itself to? How do I define dependencies? How do I use dependencies? How do I create a .deb? What do I need to do before uploading to Launchpad?

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  • complex access control system

    - by Atul Gupta
    I want to build a complex access control system just like Facebook. How should I design my database so that: A user may select which streams to see (via liking a page) and may further select to see all or only important streams. Also he get to see posts of a friend, but if a friend changes visibility he may or may not see it. A user may be an owner or member of a group and accordingly he have access. So for a user there is so many access related information and also for each data point. I use Perl/MySQL/Apache. Any help will be appreciated.

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  • Grub bootloader goes fail to boot in dual boot system after installing Ubuntu 12.10

    - by K.K Patel
    I had 12.04 with my dual boot system. Yesterday I downloaded Ubuntu 12.10 make bootable USB and choose Upgrade option in Installer. After installation Grub failed to boot my machine. I tried following to fix grub bootloder . Same problem I fixed with Ubuntu 12.04 using live USB but this solution not work for Ubuntu 12.10. Now coming at exactly where this solution goes fail. I followed this steps after booting Live USB and opening terminal. 1) sudo fdisk -l to see where Linux is installed 2) sudo mount /dev/sda9 /mnt where sda9 is my linux partition 3) sudo mount /dev/sda9 /mnt/boot 4) sudo mount --bind /dev /mnt/dev 5) sudo chroot /mnt (No problems with this steps done perfectly) 6) grub-install /dev/sda when I type command I got error that source_dir doesn't exist Please specify --target or --directory How can I solve this ?

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  • Install Ubuntu on Mac OS X Mavericks, MacBook Air

    - by Unknown
    I was wondering if its okay to install Ubuntu on my Macbook Air, and if it is okay please let me know the procedure. I would prefer to do it by NOT using reFind (not sure what the name is). The following is my system specification. Hardware Overview: Model Name: MacBook Air Model Identifier: MacBookAir6,2 Processor Name: Intel Core i5 Processor Speed: 1.3 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: 3 MB Memory: 8 GB System Software Overview: System Version: OS X 10.9.2 (13C1021) Kernel Version: Darwin 13.1.0 Boot Volume: Macintosh HD Boot Mode: Normal MacBook Air (13-inch Mid 2013), OS X Mavericks (10.9.2)

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  • Should integer divide by zero halt execution?

    - by Pyrolistical
    I know that modern languages handle integer divide by zero as an error just like the hardware does, but what if we could design a whole new language? Ignoring existing hardware, what should a programming language does when an integer divide by zero occurs? Should it return a NaN of type integer? Or should it mirror IEEE 754 float and return +/- Infinity? Or is the existing design choice correct, and an error should be thrown? Is there a language that handles integer divide by zero nicely? EDIT When I said ignore existing hardware, I mean don't assume integer is represented as 32 bits, it can be represented in anyway you can to imagine.

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  • Malware Defense Shows Up in PlayOn Settings/Logs Although System Has Been Thoroughly Cleaned

    - by nicorellius
    I was hit really hard by some nasty malware: Malware Defense. I was doing something I should not have been doing when I got it (surfing Pirate Bay for TV shows). It locked up my system and I had to reboot in safe mode. I was able to shut down the process and remove it using a malware killer tool. I then installed, after my machine was cleaned up a bit, Clamwin, Malwarebytes, and another AV tool. I cleaned the heck out of my system. Simultaneously, while this was going on, I was having trouble with my media-server, PlayOn. This tool is great, but has some bugs. One in particular is that it will not function well with AV software running. I found a way to allow the new AV software to run while using PlayOn, but it still says I have Malware Defense on. Firstly, Malware Defense is long gone. I cleaned all remnants from my registry and scoured my system with the above tools multiple times. PlayOn is getting some information that I have this crap installed on my system, but it's not. The system runs OK, but not optimally. I have a feeling it is causing my streaming to be interrupted sometimes. How is it that I can't even find Malware Defense on my system if I tried but yet somehow PlayOn is getting a finger print of it somewhere? I have gone back and forth with MediaMall to no avail. I kind of just gave up, because the streaming works OK. BTW, I also uninstalled/reinstalled PlayOn several times, reverted back to previous versions, etc. The only thing I haven't done is reformat my disk and reinstall Windows. I really don't want to do this if there is another way to remove this little print. Any ideas?

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  • Do I really need to learn Python? [closed]

    - by Pouya
    These days, I see the name "Python" a lot. Mostly when I'm doing some programming on linux/mac, I see a trace of Python. I have a fair knowledge of C++ and I'm quite good at Java. I also know Delphi which comes handy sometimes. I've been good with these languages, however, I was wondering if learning Python could make it better. What does it offer that makes it worth learning? What are its key/unique advantages/features?

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  • What tools should I consider if my aim is to make a game available to as many platforms as possible?

    - by Kenji Kina
    We're planning on developing a 2D, grid-based puzzle game, and although it's still very early in the planning stages, we'd like to make our decisions well from the beginning. Our strategy will be to make the game available to as many platforms as possible, for example PCs (Windows, Mac and/or Linux), mobile phones (iPhone and/or Android based phones), game consoles (XBLA and/or PSN) PC will have an emphasis, but I believe that's the most flexible platform so that shouldn't be a problem. So, what programming language, game engine, frameworks and all around tools would be best suited for our goal? P.S.: I'm betting a set of tools won't cover ALL of them, and that there will still be some kind of "translating" effort for some platforms, but we'd like to know what the most far reaching are.

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