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  • General solution to solve different sports results in different languages

    - by sq2
    I currently have some code that checks if squash and tennis scores are valid, both in javascript and PHP. This results in 4 blocks of code existing, 2 languages * 2 sports, which does not scale well should any extra sports come around, or extra languages... How can one describe the valid scores of games via a settings/text file, so that each language can parse them and apply these rules. I'm stumped with the strange tie break situations in tennis should it reach 6-6 in a set, and also infinite play off in the final set should it reach 2 sets all. ie: tennis = { "format": [ { "name": "sets" "min": 3, "max": 5, "winby": 1 }, { "name": "games" "min": 6, "max": 7, "winby": 2 } ] } squash = { "format": [ { "name": "games" "min": 3, "max": 5, "winby": 1 }, { "name": "points" "min": 15, "max": 0, "winby": 2 } ] }

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  • Handling bugs, quirks, or annoyances in vendor-supplied headers

    - by supercat
    If the header file supplied by a vendor of something with whom one's code must interact is deficient in some way, in what cases is it better to: Work around the header's deficiencies in the main code Copy the header file to the local project and fix it Fix the header file in the spot where it's stored as a vendor-supplied tool Fix the header file in the central spot, but also make a local copy and try to always have the two match Do something else As an example, the header file supplied by ST Micro for the STM320LF series contains the lines: typedef struct { __IO uint32_t MODER; __IO uint16_t OTYPER; uint16_t RESERVED0; .... __IO uint16_t BSRRL; /* BSRR register is split to 2 * 16-bit fields BSRRL */ __IO uint16_t BSRRH; /* BSRR register is split to 2 * 16-bit fields BSRRH */ .... } GPIO_TypeDef; In the hardware, and in the hardware documentation, BSRR is described as a single 32-bit register. About 98% of the time one wants to write to BSRR, one will only be interested in writing the upper half or the lower half; it is thus convenient to be able to use BSSRH and BSSRL as a means of writing half the register. On the other hand, there are occasions when it is necessary that the entire 32-bit register be written as a single atomic operation. The "optimal" way to write it (setting aside white-spacing issues) would be: typedef struct { __IO uint32_t MODER; __IO uint16_t OTYPER; uint16_t RESERVED0; .... union // Allow BSRR access as 32-bit register or two 16-bit registers { __IO uint32_t BSRR; // 32-bit BSSR register as a whole struct { __IO uint16_t BSRRL, BSRRH; };// Two 16-bit parts }; .... } GPIO_TypeDef; If the struct were defined that way, code could use BSRR when necessary to write all 32 bits, or BSRRH/BSRRL when writing 16 bits. Given that the header isn't that way, would better practice be to use the header as-is, but apply an icky typecast in the main code writing what would be idiomatically written as thePort->BSRR = 0x12345678; as *((uint32_t)&(thePort->BSSRH)) = 0x12345678;, or would be be better to use a patched header file? If the latter, where should the patched file me stored and how should it be managed?

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  • Linkedin recommendations, useful? [closed]

    - by scottyab
    Linkedin has been around a few years now and while not everyone is keen on it. Chatting to a few people they viewed Linkedin recommendations as mutual back starching where poor candidates can recommend each other and and provide little value. I take a honest approach when recommending colleagues, trying to note specifics that person has performed well at and don't recommend colleagues on linkedin who wouldn't recommend in real life. What regard do people hold the Linkedin recommendations? would it effect your hiring decision?

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  • Studying computer science - what am I getting myself into?

    - by clankercrusher
    I'm a student considering the possibility of studying computer science. I've picked up programming indie games and websites as a hobby and I really enjoy it. Despite my fairly positive experience, I somehow get the feeling that computer science in the business world will be completely different than do-it-for-fun game making. Since I'm interested in the field and I'd like to study well, I want to prepare myself for the onslaught. (If that’s even possible) What are some of the most important principals I need to know if I decide to study computer science? What will I need to know about computer science that a University probably won't teach me? Is there any way I can get hands on experience before or while I'm at a University? What am I getting myself into? P.S. Is this the right stack exchange site for this type of question?

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  • Recommendations for a web-based help system

    - by ggkmath
    Hi Experts, I'm putting together a fairly large GUI. I'm a tech person, but more on the hardware side, not software. I'm wondering what software package would be best suited to enable me to generate a web-based help-system. Preferably it takes care of a lot of coding, allowing me to focus on the content. For example, the user would click on a link in the GUI when they have a question, that brings them to a web-based Help Guide, for example, providing an overview of how to use the GUI, perhaps a searchable index (key-word based index), table of contents, etc, for navigating through the Help Guide. My first thought was to program everything in XHTML using Dreamweaver, but my layout requirements are fairly modest (just figures and text, maybe a few equations), and I'd prefer not to spend a lot of time concentrating on the programming. Was wondering if any software existed that made generating web-based navigatable pages easy to create/publish. Again, I'm not really a programmer, so if there's something obvious out there, I'm probably not aware of it. Any advice much appreciated! Thanks in advance.

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  • design for a parser to handle very large files

    - by user619818
    I have written a program which records protocol messages between an application and a hardware device which matches each application request with each hardware response. This is so that I can later remove the hardware, connect a 'replay' application to the main application and wait for an application request and reply with a matched copy of the requisite hardware reply message. My replay application saves the matched request/response in a list (using C++ std::list). This works fine on a small interaction session. My problem now is that I need to be able to use the replay over a long long session. With my current implementation, the replay program eventually uses up all available memory on my computer and crashes. So I need some sort of lookahead - and not parse the whole session in one go. Can anyone make any suggestions on how to get started?

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  • How would you represent an object that can be of multiple types, when storing it as a document in MongoDB?

    - by blueberryfields
    Somewhat related to this question, say that I have an object category which, depending on which type of object I have, has different restrictions on what it contains. (if you can reword the previous sentence to make more sense I'd appreciate it) For example var SomeSchema = new Schema({ _id: ObjectID, [... large number of common fields ...] type: //Restricted somehow to members of a fixed array data: //depending on type, this might be restricted - sometimes an integer, sometimes array, etc... }); What's the idiosyncratic method for defining this type of schema? Is it appropriate to define a single schema, and handle the types inside of it's members, or am I better off with separate schema for each type?

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  • Is there much difference between X86 Assembly language on Windows and Linux?

    - by Logan545
    I'm a complete beginner at Assembly, and my aim is to learn as much as I can to do with Assembly to one day I can reach expert level (I know I'm way off right now, but you never know). My only problem is this: I've got two books which both teach assembly, one on a Linux and the other on Windows. They are Jeff Duntemann's Assembly Language Step By Step (the linux one) and Introduction to 80x86 Assembly Language and Computer Architecture (the windows version). If I want to get the best out of assembly, should I do this on linux and windows? Also, is the syntax the same on Windows and Linux or will I have teach my self again when learning on the other OS( which is my main concern, I want to be able to use assembly on windows and linux).

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  • Python Multiprocessing with Queue vs ZeroMQ IPC

    - by Imraan
    I am busy writing a Python application using ZeroMQ and implementing a variation of the Majordomo pattern as described in the ZGuide. I have a broker as an intermediary between a set of workers and clients. I want to do some extensive logging for every request that comes in, but I do not want the broker to waste time doing that. The broker should pass that logging request to something else. I have thought of two ways :- Create workers that are only for logging and use the ZeroMQ IPC transport Use Multiprocessing with a Queue I am not sure which one is better or faster for that matter. The first option does allow me to use the current worker base classes that I already use for normal workers, but the second option seems quicker to implement. I would like some advice or comments on the above or possibly a different solution.

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  • Any ideas about how to make Programming Techniques Class more interesting.

    - by Eedoh
    Hello. I already found similar question here on SO, but almost all the answers were more philosophical, then practical. I'd like You to share some of Your PRACTICAL ideas about how to make my course more interesting. It doesn't matter how much effort it takes from me. I even thought about trying to motivate them to pick some topic in the beginning of the course and to work on it as some kind of real, small, startup project that they could maybe financially exploit once it's finished. But I'm afraid that most of them will not get the project to the end, and that it could be boring to them working on one thing all year long. Also I thought about involving them in Torcs, but I'm afraid most of them wouldn't be up to the task. Btw, Torcs is Car Racing Simulation, but there's an API for developers so they can develop their own AI for the driver, and then race their cars against the other programmer's AI's. I'm not asking here for problem examples, as I asked a separate question about that. I need ideas about making my lectures more interesting and fun.

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  • Do support sites like Stack Overflow upset the paid-support open source model?

    - by ajax81
    In order to stay relevant in the marketplace, I'm researching new business models for my software company. The open source model with paid support seems like a good fit for our product, but I have concerns about whether or not a paid support model is viable in an era where top-notch help is readily available for free on sites like those in the Stack Exchange network. Case in point -- I moved my employees to Ubuntu last year because I didn't want to pay for Win 7 licenses and new hardware (plus, the mono platform was highly attractive). My staff had no Linux experience, but were able to achieve relative competency in about 120 days with the help of AskUbuntu, Stack Overflow, and a few "For Dummies" books. We did employ an Ubuntu consultant for 7 days to provide training and support, but beyond that spent $0.00 on any kind of paid expertise. In regards to my due diligence, I ran a 3 month beta of the freemium-paid-support model with one of our smaller customers, and achieved mediocre results. I'd like to think its because our software is so stable and easy to use that the customer didn't need much paid support, but I suspect that they circumvented the terms of our SLA in the same manner that we did with the move to Ubuntu. Does anyone out there has any thoughts, advice, or experience relevant to the move I'm considering? What worked, what didn't, etc?

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  • Dependency Injection: Only for single-instance objects?

    - by HappyDeveloper
    What if I want to also decouple my application, from classes like Product or User? (which usually have more than one instance) Take a look at this example: class Controller { public function someAction() { $product_1 = new Product(); $product_2 = new Product(); // do something with the products } } Is it right to say that Controller now depends on Product? I was thinking that we could decouple them too (as we would with single-instance objects like Database) In this example, however ugly, they are decoupled: class Controller { public function someAction(ProductInterface $new_product) { $product_1 = clone $new_product; $product_2 = clone $new_product; // do something with the products } } Has anyone done something like this before? Is it excessive?

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  • Advice for transitioning into a Java developer position from doing other types of web development?

    - by Rick
    I've been doing web programming and currently work at a company working with mainly PHP and Javascript. For a little while now I've been becoming more and more frustrated with the shortcomings of this type of development and want to move to a company with a more defined development process that values doing things the "right way" such as using Unit tests, dependency injection / IoC, etc. I've been learning JEE / Java as much as I can on my own time but would really like to make a switch to doing this as my career and leave behind the PHP world altogether. I'm just wondering if anyone can give me advice on which things to put my main focus on right now to make myself marketable as an entry level Java developer. Basically, I feel that I'm not really learning anything new at my current job that will benefit me and its only making me more and more frustrated so I figure if there is any way to position myself for a transition I would rather do it sooner than later. Thanks for any advice.

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  • How can I optimize my development machines files/dirs?

    - by LuxuryMode
    Like any programmer, I've got a lot of stuff on my machine. Some of that stuff is projects of my own, some are projects I'm working on for my employer, others are open-source tools and projects, etc. Currently, I have my files organized as follows: /Code --/development (things I'm sort of hacking on plus maybe libraries used in other projects) --/scala (organized by language...why? I don't know!) --/android --/ruby --/employer_name -- /mobile --/android --/ios --/open-source (basically my forks that I'm pushing commits back upstream from) --/some-awesome-oss-project --/another-awesome-one --/tools random IDE settings sprinkled in here plus some other apps As you can see, things are kind of a mess here. How can I keep things organized in some sort of coherent fashion?

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  • Most effective way to do daily standup meeting when a few people are remote

    - by Burhan Ali
    I am a software developer in a small team of seven. We are not an Agile (with a big 'A') team but are experimenting with some aspects of agile. One of these is the daily "standup" meeting. The difficulty here is that for two days of the week we have at least one person working from home so the full team isn't available in the same room. What is the best way to carry out a daily standup in this situation? Some facts that may be relevant: We all work in a single open plan room. We use Skype in our company. We don't have any video conferencing capability. We all work the same hours so there are no timezone complexities involved. The development manager is one of the people who works from home one day a week. Things we have tried: Conference call using Skype: This is tricky for those in the office because you can hear people speak in the room and then a split second later through the headset. This can e very distracting. Conference phone: Awful experience. Hard to get them to work and poor quality audio. Text-based updates using Skype. This is not as engaging and is no different than just firing off a status email in the morning. I have seen other questions about remote collaboration but they are mainly about completely remote teams and/or teams that span multiple time zones. We are not affected by either of these problems. What can we do to make our standup meetings better in these circumstances?

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  • How to avoid or minimise use of check/conditional statement in my scenario?

    - by Muneeb Nasir
    I have scenario, where I got stream and I need to check for some value. If I got any new value I have to store it in any of data structure. It seems very easy, I can place conditional statement if-else or can use contain method of set/map to check either received is new or not. But the problem is checking will effect my application performance, in stream I will receive hundreds for value in second, if I start checking each and every value I received then for sure it effect performance. Anybody can suggest me any mechanism or algorithm to solve my issue, either by bypassing checks or at least minimize them?

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  • Is SOAP Http POST more complicated than I thought

    - by Pete Petersen
    I'm currently writing a bit of code to send some xml data to a web service via HTTP POST. I thought this would be really simple and have written the following example code (C#) Console.WriteLine("Press enter to send data..."); while (Console.ReadLine() != "q") { HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create(@"http://localhost:8888/"); Foo fooItem = new Foo { Member1 = "05", Member2 = "74455604", Member3 = "15101051", Member4 = 1, Member5 = "fsf", Member6 = 6.52, }; ASCIIEncoding encoding = new ASCIIEncoding(); string postData = fooItem.ToXml(); byte[] data = encoding.GetBytes(postData); httpWReq.Method = "POST"; httpWReq.ContentType = "application/xml"; httpWReq.ContentLength = data.Length; using (Stream stream = httpWReq.GetRequestStream()) { stream.Write(data, 0, data.Length); } HttpWebResponse response = (HttpWebResponse)httpWReq.GetResponse(); string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd(); Console.WriteLine("Received " + responseString); Console.WriteLine("Press enter to send data..."); } This is all I thought would be necessary, however I have now been given the details for the web service. This included some information which is unfarmiliar to me and I'm unsure whether I need to include it. The information I was sent was <url>http://sometext/soap/rpc</url> <namespace>http://sometext/a.services</namespace> <method>receiveInfo</method> <parm-id>xmldata</parm-id> (Input data) (Actual XML data as string) <parm-id>status</parm-id> (Output data) <userid>user</userid> <password>pass</password> <secure>false</secure> I guess this means I need to include a username and password somehow, but I'm not sure what the namespace or method fields are used for. Could anyone give me a hint? Sorry I've never used webservices before.

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  • Setting up Developers Conference

    - by Darknight
    In our local city in the UK, there are as far as I am aware no developer conferences. I am confident that our region has many professional developers as well as many graduating students whom who really benefit from a conference. I would like to ask the following questions: What steps or advice would one take if the task was given to set up a local developers conference? What would the costing look like? (excluding building/hosting of website(s)) How would one build interest and promote this? How would I approach, Local Companies & Universities to collaborate with them? I'm not just aiming this question to users who may have experience in setting up such conferences (but are highly welcome). Rather how would you attack this if you was tasked with this?

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  • Best book for developer who needs to learn software fundamentals

    - by tharrison
    I have recently inherited a team of developers, none of whom really have any programming experience. Some are really bright, and are learning on their own. I am looking for one or two books that are practical but show the core practices of professional development: Structure, OO, naming, DRY, why elegance matters, etc. When I was learning, I loved Code Complete, and Programming Pearls, but they are dated now. Any recommendations for good books that could be used in tandem with a language specific book to help understand? Thanks in advance!

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  • Good structure of IT / programmer CV

    - by tomas
    Hi, company where I applied for a job requires a very detailed CV mainly of programming languages, frameworks, technology. My CV have 3 pages but for this company is not enough detailed. ;) What structure have your CV in programming languages, frameworks, technology, third-party libraries? Any sample of good structured CV. (as pdf file) Of course I had used the google but I found a dozen same old things. I would like have someting orignal and fresh. Any inspiration? I do not know what to write for example C #. C# OOP, delagate, event, generic, LINQ other WPF control, data template, converter, style, triggers..? Prims, Caliburn, MEF ? Also which skills from OS, IDE, util is suitably to have in CV. I would’t have a 10 pages CV or have bad and immense structure of CV. Sory for my english

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  • Is it bad practice to use the same name for arguments and members?

    - by stijn
    Sometimes I write constructor code like class X { public: X( const int numberOfThingsToDo ) : numberOfThingsToDo( numberOfThingsToDo ) { } private: int numberOfThingsToDo; }; or in C# class X { public X( int numberOfThingsToDo ) { this.numberOfThingsToDo = numberOfThingsToDo; } private int numberOfThingsToDo; } I think the main reason is that when I come up with a suitable member name, I see no reason to use a different one for the argument initializing it, and since I'm also no fan of using underscores the easiest is just to pick the same name. After all it's suitable. Is this considered bad practice however? Any drawbacks (apart from shooting yourself in the foot when forgetting the this in C#)?

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  • Is it a good idea to appoint one of the scrum team member or scrum master as Product Owner?

    - by Sandy
    Lately we had a project, in which client was busy touring. As usual scrum team was formed, management decided to appoint our analyst as Product owner since Client won’t be able to participate actively. Analyst was the one who worked closely with client for requirement analysis and specification drafting. Client doesn’t have the time to review first two releases. Everything went smoothly until, client saw third release; he wasn’t satisfied with some functionalities, and those was introduced by make shift Product Owner (our analyst). We were told to wait till design team finished mock-up of all pages and client checked each one and approved to continue working. Scrum team is there, but no sprints – we finished work almost like classic waterfall method. Is it a good idea to appoint scrum team member or master as product owner? Do we need to follow scrum in the absence of client/product owner participation?

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  • Why would Java app make RPC call to itself?

    - by amphibient
    I am working with a multithreaded homegrown multi-module app in my new job. We use the the Thrift protocol to communicate RPC calls between different stand-alone applications in a distributed system. One of them listens on multiple ports and I just noticed that it actually makes an RPC call to itself from one thread invoked from one socket it listens to (web service call) to another port within the same app. I verified that it could accomplish the same thing if it just went and directly called the method that the remote procedure ultimately invokes as it is all within the same application, same JVM. To make it even more mysterious, the call is completely synchronous, i.e. no callbacks involved. The first thread totally sits and waits until it makes a call across the wire to itself and comes back. Now, I am perplexed why anybody would do it this way. It seems like calling somebody on the phone that sits in the same room as you do. Can anybody provide an explanation why the developer before me would come up with the above mentioned model? Maybe there is a reason and I am missing something.

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  • What guidelines are best suited for leveraging automatic deployments?

    - by Scott
    We are hoping to leverage a static code analysis tool (Sonar) as part of our continuous integration server, and are hoping to determine some useful guidelines to serve as a base for allowing the deployment to continue. What conditions should we make mandatory before allowing a build to proceed to the next set of testing? The obvious answers include that it compiles and the unit tests are successful. But what are some other things we should require before allowing a build to not be rolled back?

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  • How to find out what Hackathons are coming up near me? [closed]

    - by codeulike
    I just went to my first hackathon (London GreenHackathon) and I want to go to lots more. Specifically, hackathons that have a theme of helping people or making the world a better place in some way. I know about Random Hacks of Kindness and a couple of others but is there some central aggregator that will help me find out about hackathons? Also, if anyone else can suggest specific hackathon initiatives I should check out that would be handy too. I'm in London but obviously for other people reading this question other locations will be of interest.

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