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  • JAVA - multirow array

    - by user51447
    Here is my situation: a company has x number of employees and x number of machines. When someone is sick, the program have to give the best possible solution of people on the machines. But the employees can't work on every machine. I need a code for making little groups of possible solutions. this is a static example private int[][] arrayCompetenties={{0,0,1,0,1},{1,0,1,0,1},{1,1,0,0,1},{1,1,1,1,1},{0,0,0,0,1}}; = row is for the people and columns are for machines m1 m2 m3 m4 m5 m6 m7 p1 1 1 p2 1 1 1 1 p3 1 1 1 p4 1 1 1 p5 1 1 1 1 p6 1 1 1 1 p7 1 1 1 1 1 1 my question = with what code do i connect all the people to machine in groups (all the posibilities) like: p1 - m1 , p2-m2 , p3 - m3 , p4-m4 , p5 - m5 , p6-m6 p1 - m1 , p2-m3 , p3 - m3 , p4-m4 , p5 - m5 , p6-m6 p1 - m1 , p2-m4 , p3 - m5 , p4-m4 , p5 - m5 , p6-m6 p1 - m1 , p2-m5 , p3 - m3 , p4-m4 , p5 - m5 , p6-m6 p1 - m1 , p2-m2 , p3 - m3 , p4-m4 , p5 - m5 , p6-m6 .... i need a loop buth how? =D thanks!

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  • Refactoring obscurely commented code

    - by wraith808
    In refactoring code, I came across code that had comments. Looking closer at the comments, I could see that the code was clearly not doing what the comments said. Without access to the coder nor documentation, and without clear direction regarding the code (i.e. defects as to the fact that the code is operating incorrectly), is the best practice to assume that the code is correct, and clean up the comments?

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  • Oracle Enterprise JavaBeans (EJB) Developer Certification

    - by user33716
    I would like to gain the "Oracle Enterprise JavaBeans (EJB) Developer" certification. According to this page I have to take a number of classes each of which costs up to a couple of thousand GB£. Is this really the only way to obtain the certification? Can I not just buy a certification guide book from amazon and just sit the requisite tests? At the moment I have no Java EE experience and I'm finding it impossible to get interviews for the jobs I'm interested in. I'm hoping this will at least help me get my foot through the door.

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  • Entity framework separating entities for product and customer specific implementation

    - by Codecat
    I am designing an application with intention into making it a product line. I would like to extend the functionality across all layers and first struggle is with domain models. For example, core functionality would have entity named Invoice with few standard fields and then customer requirements will add some new fields to it, but I don't want to add to core Invoice class. For every customer I could use customer specific DbContext and injected correct context with dependency injection. Also every customer will get they own deployment public class Product.Domain.Invoice { public int InvoiceId { get; set; } // Other fields } How to approach this problem? Solution 1 does not work since Entity Framework does not allow same simple name classes. public class CustomerA.Domain.Invoice : Product.Domain.Invoice { public User ReviewedBy { get; set; } public DateTime? ReviewedOn { get; set; } } Solution 2 Create separate table and link it to core domain table. Reusing services and controllers could be harder. public class CustomerA.Domain.CustomerAInvoice { public Product.Domain.Invoice Invoice { get; set; } public User ReviewedBy { get; set; } public DateTime? ReviewedOn { get; set; } }

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  • Review before or after code commit, which is better?

    - by fifth
    Traditionally we performed code review before commit, I had an argument with my colleague today, who preferred code review after commit. First, here's some background, we got some experienced developers and we also got new hires with almost zero programming practice. we'd like to perform fast and short iterations to release our product. we all team members locate at same site. The advantages of code review before commit I've learned, mentor new hires try to prevent errors, failures, bad designs in early developing cycle learn from others knowledge backup if someone quits But I also got some bad experience, like low efficiency, some changes may be reviewed over days hard to balance speed and quality, especially for newbies some guy felt distrust As to post-review, I just knew little about this, but the most thing I worried about is the risk of losing control, people never review. Any opinions?

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  • Some hint to program a webservice "by subscription"

    - by Eagle
    I have some web sites programmed, I know to do it with python and PHP basically. Normally they are simple web sites, but now I want to provide REST web services but only for allowed users (allowed by me). I saw that a lot of services uses the "KEY" and "SECRET_KEY" concepts, which seems to be what I need (if I understand it right). My suppositions are: If I only do a GET service to retrieve, e.g., all my clients, without anymore, anyone can retrieve my clients without limitations. I will need some KEY generator to provide keys for my allowed users, so they can use my webservices. Only with a KEY is not enough: someone can steal a KEY and supplant my user (and this is the reason because exists a SECRET_KEY, right?). If all this is right, how can I make/use a system like that in my web services? Some open source example? Or maybe there are another easy solutions I'm not considering? My objective is to allow some users to use my web services.

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  • What are the commonly confused encodings that may result in identical test data?

    - by makerofthings7
    I'm fixing code that is using ASCIIEncoding in some places and UTF-8 encoding in other functions. Since we aren't using the UTF-8 features, all of our unit tests passed, but I want to create a heightened awareness of encodings that produce similar results and may not be fully tested. I don't want to limit this to just UTF-8 vs ASCII, since I think issue with code that handles ASN.1 fields and other code working with Base64. So, what are the commonly confused encodings that may result in identical test data?

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  • How to devise instruction set of a stack based machine?

    - by Anindya Chatterjee
    Stack based virtual machines like CLR and JVM has different set of instructions. Is there any theory behind devising the instruction set while creating a virtual machine? e.g. there are JVM instruction sets to load constants from 0-5 onto the stack iconst_0 iconst_1 iconst_2 iconst_3 iconst_4 iconst_5 whereas in CLR there are instruction set to load number from 0 to 8 onto the stack as follows ldc.i4.0 ldc.i4.1 ldc.i4.2 ldc.i4.3 ldc.i4.4 ldc.i4.5 ldc.i4.6 ldc.i4.7 ldc.i4.8 why there is no ldc.i4.9 and if ldc.i4 is there why we need the above opcodes? And there are others like these. I am eager to know what is the reason behind this difference between opcodes of different VMs? Is there any specific theory to devise these opcodes or it is totally driven by the characteristics of the VM itself or depends on the high-level language constructs?

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  • CSS3 - "connecting" 2 classes animation [closed]

    - by Nave Tseva
    I have this CSS +HTML code: <!DOCTYPE HTML> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> <title>What</title> <style type="text/css"> #page { width: 900px; padding: 0px; margin: 0 auto; direction: rtl; position: relative; } #box1 { position: relative; width: 500px; border: 1px solid black; box-shadow: -3px 8px 34px #808080; border-radius: 20px; box-shadow: -8px 5px 5px #888888; right: 300px; top: 250px; height: 150px; -webkit-transition: all 1s; font-size: large; color: Black; padding: 10px; background: #D0D0D0; opacity: 0; } @-webkit-keyframes myFirst { 0% { right: 300px; top: 150px; background: #D0D0D0; opacity: 0; } 100% { background: #909090; ; right: 300px; top: 200px; opacity: 1; } } #littlebox1 { top: 200px; position: absolute; display: inline-block; } .littlebox1-sentence { font-size: large; padding-bottom: 15px; padding-top: 15px; padding-left: 25px; padding-right: 10px; background: #D0D0D0; border-radius: 10px; -webkit-transition: background .25s ease-in-out; } #littlebox1:hover ~ #box1 { -webkit-transition: all 0s; background: #909090;; right: 300px; top: 200px; -webkit-animation: myFirst 1s; -webkit-animation-fill-mode: initial; opacity: 1; } .littlebox1-sentence:hover { background: #909090; } .littlebox1-sentence:hover + .triangle { border-right: 50px solid #909090; } .triangle { position: relative; width: 0; height: 0; border-right: 50px solid #D0D0D0; border-top: 24px solid transparent; border-bottom: 24px solid transparent; right: 160px; -webkit-transition: border-right .25s ease-in-out; } .triangle:hover { border-right:50px solid #909090; } </style> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <script> $(function() { $('.littlebox1-sentence').hover(function() { $(this).css('background', '#909090'); $('.triangle').css('border-right', '50px solid #909090'); }); </script> <script> $(function() { $('.triangle').hover(function() { $(this).css('border-right', '50px solid #909090'); $('.littlebox1-sentence').css('background', '#909090'); }); </script> </head> <body dir="rtl"> <div id="page"> <div id="littlebox1" class="littlebox1-sentence">put your mouse here</div><div id="littlebox1" class="triangle"> </div> <div id="box1"> </div> </div> </body> </html> Live example you will find here: http://jsfiddle.net/FLe4g/12/ The problem here that something here wrong in the second jquery code. I want that every time that I put the mouse on the box, or on the triangke they both will change ther color together. when I put the mouse on the box it works fine, but when I put the mouse on the triangle it don't work. Any suggestions how to fix this code?

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  • What issues are there for doing freelance work?

    - by Telos
    I'm considering doing some contract work on the side of my normal job. I know that it will kill my free time, but I figure I can control when I'm doing projects and then get a little extra money or even eventually make it my full time job. But as I've never done this before, I'm wondering what issues people face to do this kind of work. For instance: how do you find customers? What difficulties do you normally face on a project? How do you deal with projects that are too large for one programmer to effectively complete? What about projects that need other skill sets (for instance web design for a web app?)

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  • How to become more productive in design and programming

    - by aurel
    Usually whenever I see tutorial videos (apart from the main subject) I learn a lot from their working habits, for example; they way they have set up their folders, what shotcuts they use. The best example was (long time a go) I say a jquery video, and half way through the author said something like “by the way you could have a code library” – that’s the only thing I remember from that video (but the author said it as something he assumed people know about) So I was wondering if someone knows any tip or any website which goes other how other professionals work, how they have set up their programming habits to help them not waste time in repetitive tasks.

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  • Am I getting paid a reasonable wage for web engineering?

    - by sailtheworld
    I've been doing some research and it looks like most people in my line of work - WEB ENGINEERING/WEB APPLICATION DEVELOPMENT - that get paid hourly, make anywhere from $30-80 an hour for their work. With that said, I have SEVEN years of experience with web development including OOP-PHP, MySQL, jQuery, OOP-JS, interface design, ajax, database architecture, etc. I am also very strong with visual design and workflow - thus, I've made some really high quality interactive interfaces. I also have a lot of experience with Zend Framework, Symfony, Wordpress, Drupal, etc and a really strong portfolio to show for it. Here's the catch: I'm 20 years old, haven't graduated from college yet (I'm doing part time school and ~30 hours a week of web development.) But I've literally been doing web apps since I was 13 years old. So my question is: is $14 an hour a reasonable starting wage for working at a company part time?

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  • How can I choose a Webapp UI Design/dev collaborative tool?

    - by Cheeso
    I am working with a team that's building a webapp for internal use in an enterprise. It's basically a workflow app at heart, where there's a single "request". Each request flows through various stages, and at each stage, there's a person or role that is responsible for moving the request to the next stage. "Moving" the request to the next stage might involve adding more data, validating things, gathering input from some external source and correlating it to the data in the request, and so on. The workflow engine has been selected. The UI for the various roles and stakeholders is being designed. We have a distributed group of stakeholders. I'd like to employ a collaborative design/dev effort, where devs can produce and stand-up mockups or even working prototypes, then solicit feedback on those things. In a centralized team this could be done via design review meetings, with everyone gathered round a screen projector. That just is not going to work for us. So what I'd like is an app that can help with this. Any recommendations on apps or how to choose?

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  • What will be the better way for data retrieval on application that needs to handle limited amount of data?

    - by Milanix
    Just moved this question from Stack Overflow. Since, adding my code snippets itself would make this question really long. Instead, I am pretty interested in knowing a better ways for data retrieval on application that needs to handle limited amount of data which isn't updated regularly. Let's take this example: I am writing an application which gets a schedule as an XML from server. I have written a logic in order to parse XML version and update database only if the version is newer than the local version. Although the update is checked automatically/manually on daily basis based on user preference, the actual version update happens only once per few months or so. Since, this is done by some other authority which doesn't provide API but, rather inform publicly on their changes. The actual XML contains a "(n number of groups)(days in a week) (n number of schedule)" . The group is usually 6 and the number of schedule is usually 2. So basically there would usually be only around 100 strings. Now although I have used SQLite at the moment. I want to know how to make update on database. Should I show progress dialog that the application is updating and exit the app when it's done? Since, my updates are infrequent i don't think this will really harm user experience but, is there any better ways to do it? Because I don't want update to be made when user is searching which is done using database. This will cause an database already open exception. At least I have faced this problem before. Is it better to rather parse XML every time when user wants to view certain things or to use SQLite? Since, I make lots of use of adapter in my app to create lists, will that degrade the performance?

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  • How can I know if programming is right for me?

    - by user66414
    I have an IT background and was pretty confident until an opportunity came up at work to go into programming(C#). I have never programmed before this, and the software I am programming for is a program I have never used before (a 3D modeling software). It has been 6 months since then and I feel like giving up. I didn't get much training... about 3 weeks of training spread out over the last 6 months. I think I would be good at programming but this experience is kinda making me rethink my decision. I'm not sure if it's just me, or if this frustration is normal. How can I tell if programming is right for me?

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  • interview for an embedded systems C developer profile

    - by Registered User
    Following are interview questions 1) code for kernel scheduler ( I could not, he said even if some portion of code then fine I have read but reproducing them I could not do that ) 2) asked to write code for Interrupt handlers (I am aware but could not reproduce code ) 3)Device drivers file operations (this I was able to write) 4) Asked to explain Xen bootstrapping and architecture code (not diagrams) I am looking for links where code has been explained.I have read such things but I some times feel difficult to understand without having a proper explanation. So in case you are aware of any such things let me know.

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  • PHP OOP: Am i following right way?

    - by sineverba
    I'm learning OOP (PHP). I've realized my own CRUD Class, that performs some kind of queries SQL. Btw, a Gasoline asked us to realize a smart, simple web-app where he can update prices of his gasoline (gasoline, diesel, lpg) and via an API i could recall them and display in his site. So, I did create a new Class Gasoline but it perform some methods of CRUD Class public function getPrezzoBenzina($id) { $prezzo_benzina = $this->distributore->sql('SELECT prezzo_benzina FROM prezzi WHERE id = '.$id); return $prezzo_benzina } And so on (code is pseudocode, just to explain). I could perform all my code only with help of Crud Class... without necessity of Class Gasoline. So, what I'm missing about OOP? Where am I wrong?

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  • Using Dynamic LINQ to get a filter for my Web API

    - by Espo
    We are considering using the Dynamic.CS linq-sample included in the "Samples" directory of visual studio 2008 for our WebAPI project to allow clients to query our data. The interface would be something like this (In addition to the normal GET-methods): public HttpResponseMessage List(string filter = null); The plan is to use the dynamic library to parse the "filter"-variable and then execute the query agains the DB. Any thoughts if this is a good idea? Is it a security problem?

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  • how to fix fatal error jvmti.h No such file or directory compilation terminated on c code ubuntu? [on hold]

    - by Blue Rose
    how to fix fatal error jvmti.h No such file or directory compilation terminated c code ubuntu? my c code is: #include "jvmti.h" JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) { /* We return JNI_OK to signify success */ printf("\nBushra Za'areer,\n\n"); return JNI_OK; } JNIEXPORT void JNICALL Agent_OnUnload(JavaVM *vm) { } type this command in terminal: gcc -Wall -W -Werror first_agent.c -o firstagent first_agent.c:1:19: fatal error: jvmti.h: No such file or directory compilation terminated. where java jdk version javac 1.7.0_25 where gcc version gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-2ubuntu4) here should update gcc version to 4.8?

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  • what tools and technologies an Technical Java Architect must hava [on hold]

    - by vicky
    I have more then eight years of experience in different Java tools, technologies and domains. Currently I am employed as a Technical Java Architect. I have worked on mobile, web, webservices, database, backend and desktop applications during this period. Everything was OK untill I got a few very good offers regarding an enterprise architect, solutions architect, java architects roles. But each one required different tool set. One was regarding experience in all Apache stack and technologies. So, help me which tools and technologies a real java technical Architect shuold have ? So that I can equip myself with that. Thanks.

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  • Who are the most influential computer scientists today? [closed]

    - by Banana
    Possible Duplicate: Which individuals are having the greatest impact on software developers today? Computer science has changed dramatically during the last decades, and new fields that recently arose in the scientific community are completely different with respect to classical cs related topics (for example, social network analysis). I'd like to have an overview of the most influential computer scientists in activity, or at least, who have been working during the last 10/15 years, possibly listed according to their specific field of study.

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  • What's the best way to learn image processing?

    - by rdasxy
    I'm a senior in college that hasn't done much image processing before (except for some basic image compression on smartphones). I'm starting a research project on machine learning next semester that would require some biomedical image processing. What's the best way to get up to speed with the basics of image processing in about two months? Or is this impractical? It's my impression that once I'm good with the basics learning more from other resources would be easier.

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  • Which card readers support HID (Human Interface Device) and emulate keyboard input? [closed]

    - by Level1Coder
    I'm looking for a card reader to interface with an inhouse webapp and need it to emulate keyboard input to type the card data (serial number) into a web form. A simple usage scenario would be where I open notepad, have notepad focused as front most, swipe the card, and the card reader can type out the card data into notepad as plain text. As long as this works, the card data can work with any web form. Which card readers supports this kind of keyboard emulation mode?

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  • Writing a desktop application for progammer from PHP background

    - by Mark
    I have a client who wants a tool for him to be able to upload his products, enter orders, and keep track of customer details. There are quite a few highly customised requests, which is why he wants the tool custum made. He does not care much about the interface design - it just has to be usable and provide access to the databade. I've already designed the database. I have no experience of desktop applications and usually write my web apps in PHP with the Yii framework. But hosting this on a server seems like overkill. I also have .net experience from a few years ago. What would be the best options for writing this as a desktop application?

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  • How to determine if class meets single responsibility principle ?

    - by user1483278
    Single Responsibility Principle is based on high cohesion principle. The difference between the two is that highly cohesive classes feature a set of responsibilities that are strongly related, while classes adhering to SRP have just one responsibility. But how do we determine whether particular class features a set of responsibilities and is thus just highly cohesive, or whether it has only one responsibility and is thus adhering to SRP? Namely, isn't it more or less subjective, since some may find class very granular ( and as such will consider a class as adhering to SRP ), while others may find it not granular enough?

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