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  • To maximize chances of functional programming employment

    - by Rob Agar
    Given that the future of programming is functional, at some point in the nearish future I want to be paid to code in a functional language, preferably Haskell. Assuming I have a firm grasp of the language, plus all the basic programmer attributes (good communication skills/sense of humour/hygiene etc), what should I concentrate on learning to maximize my chances? Are there any particularly sought after libraries I should know? Alternatively, would another language be a better bet, say F#? (I'm not too fussed about the kind of programming work, so long as it's reasonably interesting and reasonably well paid, and with nice people)

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  • Do most companies not know how to write software?

    - by SnOrfus
    If you're an active reader here, try to think about how many times you've heard (and even agreed) when someone here has told someone else to start looking for a new job. Personally, I've seen it a lot more than I expected: it's almost starting to sound cliche. I get that there are bound to be a number of companies that are bad at developing software or managing a software project, but it almost seems like it's getting worse and more frequent, maybe we're just hearing from them and not all of the places that have decent work atmospheres/conditions. So I ask: In your experience, and through your developer friends do you find that it is common that companies have bad development environments and if so: Why do you think it's common? What do you think could be done to fix it as a developer, as a manager, as an industry? Do you think it's improving?

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  • org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager

    - by BilalFromParis
    when I add the code into my spring configuration file beans-hibernate.xml <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> It doesn't work and I don't know why, can someone help me please ? My Dao Class is : public class CourseDaoImpl implements CourseDao { private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } @Transactional public void store(Course course) { sessionFactory.getCurrentSession().saveOrUpdate(course); } @Transactional public void delete(Long courseId) { Course course = (Course)sessionFactory.getCurrentSession().get(Course.class, courseId); sessionFactory.getCurrentSession().delete(course); } @Transactional(readOnly=true) public Course findById(Long courseId) { return (Course)sessionFactory.getCurrentSession().get(Course.class, courseId); } @Transactional public List<Course> findAll() { Query query = sessionFactory.getCurrentSession().createQuery("FROM Course"); return (List<Course>)query.list(); } } but : juil. 04, 2012 3:38:18 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh Infos: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@6ba8fb1b: startup date [Wed Jul 04 03:38:18 CEST 2012]; root of context hierarchy juil. 04, 2012 3:38:18 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions Infos: Loading XML bean definitions from class path resource [beans-hibernate.xml] juil. 04, 2012 3:38:19 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons Infos: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5a7fed46: defining beans [org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,sessionFactory,transactionManager,courseDao]; root of factory hierarchy juil. 04, 2012 3:38:19 AM org.hibernate.annotations.common.Version INFO: HCANN000001: Hibernate Commons Annotations {4.0.1.Final} juil. 04, 2012 3:38:19 AM org.hibernate.Version logVersion INFO: HHH000412: Hibernate Core {4.1.3.Final} juil. 04, 2012 3:38:19 AM org.hibernate.cfg.Environment INFO: HHH000206: hibernate.properties not found juil. 04, 2012 3:38:19 AM org.hibernate.cfg.Environment buildBytecodeProvider INFO: HHH000021: Bytecode provider name : javassist juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!) juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000115: Hibernate connection pool size: 20 juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000006: Autocommit mode: false juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000401: using driver [org.hibernate.dialect.PostgreSQLDialect] at URL [jdbc:postgresql://localhost:5432/spring] juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000046: Connection properties: {user=Bilal, password=**} juil. 04, 2012 3:38:19 AM org.hibernate.dialect.Dialect INFO: HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect juil. 04, 2012 3:38:19 AM org.hibernate.engine.jdbc.internal.LobCreatorBuilder useContextualLobCreation INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4 juil. 04, 2012 3:38:19 AM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService INFO: HHH000399: Using default transaction strategy (direct JDBC transactions) juil. 04, 2012 3:38:19 AM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory INFO: HHH000397: Using ASTQueryTranslatorFactory juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.SchemaUpdate execute INFO: HHH000228: Running hbm2ddl schema update juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.SchemaUpdate execute INFO: HHH000102: Fetching database metadata juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.SchemaUpdate execute INFO: HHH000396: Updating schema juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.TableMetadata INFO: HHH000261: Table found: public.course juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.TableMetadata INFO: HHH000037: Columns: [fee, id, title, end_date, begin_date] juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.TableMetadata INFO: HHH000108: Foreign keys: [] juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.TableMetadata INFO: HHH000126: Indexes: [course_pkey] juil. 04, 2012 3:38:19 AM org.hibernate.tool.hbm2ddl.SchemaUpdate execute INFO: HHH000232: Schema update complete juil. 04, 2012 3:38:19 AM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons Infos: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5a7fed46: defining beans [org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.annotation.AnnotationTransactionAttributeSource#0,org.springframework.transaction.interceptor.TransactionInterceptor#0,org.springframework.transaction.config.internalTransactionAdvisor,sessionFactory,transactionManager,courseDao]; root of factory hierarchy juil. 04, 2012 3:38:19 AM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl stop INFO: HHH000030: Cleaning up connection pool [jdbc:postgresql://localhost:5432/spring] Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in class path resource [beans-hibernate.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/hibernate/engine/SessionFactoryImplementor at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:83) at com.boutaya.bill.main.Main.main(Main.java:14) Caused by: java.lang.NoClassDefFoundError: org/hibernate/engine/SessionFactoryImplementor at org.springframework.orm.hibernate3.SessionFactoryUtils.getDataSource(SessionFactoryUtils.java:123) at org.springframework.orm.hibernate3.HibernateTransactionManager.afterPropertiesSet(HibernateTransactionManager.java:411) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) ... 12 more Caused by: java.lang.ClassNotFoundException: org.hibernate.engine.SessionFactoryImplementor at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 16 more I think the problem is when I use the Class : org.springframework.orm.hibernate3.HibernateTransactionManager ???

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  • In retrospect, has it been a good idea to use three-valued logic for SQL NULL comparisons?

    - by Heinzi
    In SQL, NULL means "unknown value". Thus, every comparison with NULL yields NULL (unknown) rather than TRUE or FALSE. From a conceptional point of view, this three-valued logic makes sense. From a practical point of view, every learner of SQL has, one time or another, made the classic WHERE myField = NULL mistake or learned the hard way that NOT IN does not do what one would expect when NULL values are present. It is my impression (please correct me if I am wrong) that the cases where this three-valued logic helps (e.g. WHERE myField IS NOT NULL AND myField <> 2 can be shortened to WHERE myField <> 2) are rare and, in those cases, people tend to use the longer version anyway for clarity, just like you would add a comment when using a clever, non-obvious hack. Is there some obvious advantage that I am missing? Or is there a general consensus among the development community that this has been a mistake?

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  • MPL 1.1 and APL 2.0 License compatibility

    - by Kenneth Cochran
    I am working a project that is licensed under the MPL 1.1 and would like to incorporate some code that is licensed under the APL 2.0. I know in 2010 Mozilla announced they were updating the MPL to make it more "Apache compatible" among other things. I'm no lawyer. Exactly what part(s) of the MPL 1.1 don't jive with the APL 2.0 and vice versa? The project has very few of its original contributers still actively involved so I doubt I'd be able to contact all of them to get permission to change the license.

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  • GPL code allowing non-GPL local copies of nondistributed code

    - by Jason Posit
    I have come across a book that claims that alterations and augmentations to GPL works can be kept close-source as long as these are not redistributed into the wild. Therefore, customizations of websites deriving from GPL packages need not be released under the GPL and developers can earn profit on them by offering their services to their clients while keeping their GPL-based code closed source at the same time. (cf. Chapter 17 of WordPress Plugin Development by Wrox Press). I've never realized this, but essentially, by putting restrictions on redistributable code the GPL says nothing about what can and cannot be done with code which is kept private in terms of the licensing model. Have I understood this correctly?

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  • How properly perform passing operation result to View

    - by atomAltera
    I'm developing web site on self made MVC engine. I have actionController that handles operations like register, login, post submit and etc. actionController receives operation name and parameters. Of course it mast handle errors such user with same nick already exists or password is to short about which action handler have to notify user. The question is which is the best way to organize errors, such that View could easily get localized user notification message. I see two ways First one: define error constants like ERR_NICK_BUSY = '1' ERR_NICK_INVALID = '2' ... and localization map local[ERR_NICK_BUSY] = 'User with the same nick already registered' local[ERR_NICK_INVALID ] = 'Nick, you entered is invalid' ... And second one: define abstract constants like ERR_FIELD_BUSY = '1' ERR_FIELD_INVALID = '2' ... and pass them with field name. In this case localization looks like local['nick_'+ERR_FIELD_BUSY] = 'User with the same nick already registered' ... I don't like both this methods. Can you advise something else?

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  • What do you think are the biggest software development issues, in small to medium businesses?

    - by Ron-Damon
    Hi, I own a small software development company that developes Web software to other small and medium companies in Chile. The business process is very complex and it is hard to stablish where to put the efforts to make our company better, more efficient, and give better solutions. I'm also a TI master's degree student and i'm making a paper about this subject, so any help would be great to help my company and my paper. I have considered 3 areas for the problems: 1) Software development problems 2) Web development problems 3) Small and Medium companies problems I don't know about you, but at least this "business formula" in Chile has not received very much support but it is getting better, but today my company is far from being self-sufficient. UPDATE: Thanks guys for your support so far, i'm updating because i have somewhat enough information so i decided to go deeper within the subjects, wish i would like you to consider for your next answers/commentaries on the subject: 1) Software development problems (3) 1.1 Incomplete problem picture 1.2 Useless delivered software 1.3 Unrealistic or inadequate schedule 2) Web development problems (3) 2.1 Apparently non-viable implementation 2.2 Unefficient module construction design 2.3 Reduced result system inter-operability 3) Small and Medium companies problems (3) 3.1 Very specific, but narrowed requerired system characteristics 3.2 Developed system is not used 3.3 Positivist demand for activities in project execution There are only 3 problems for category, to deliberately keep a thiner scope. Also, i have considered that it would have been apropiated to separate the third clasification on two, but won't be doing it just now: 3) Small and Medium software developement providers problems 4) Small and Medium software developement clients problems In that case, i think i would have made the scope of the problem wider and it is not what i want to do now, until at least i'm very trough with the other two clasifications. What you think?

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  • Learning to implement dynamically typed language compiler

    - by TriArc
    I'm interested in learning how to create a compiler for a dynamically typed language. Most compiler books, college courses and articles/tutorials I've come across are specifically for statically typed languages. I've thought of a few ways to do it, but I'd like to know how it's usually done. I know type inferencing is a pretty common strategy, but what about others? Where can I find out more about how to create a dynamically typed language? Edit 1: I meant dynamically typed. Sorry about the confusion. I've written toy compilers for statically typed languages and written some interpreters for dynamically typed languages. Now, I'm interested in learning more about creating compilers for a dynamically typed language. I'm specifically experimenting with LLVM and since I need to specify the type of every method and argument, I'm thinking of ways to implement a dynamically typed language on something like LLVM.

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  • Returning a mock object from a mock object

    - by Songo
    I'm trying to return an object when mocking a parser class. This is the test code using PHPUnit 3.7 //set up the result object that I want to be returned from the call to parse method $parserResult= new ParserResult(); $parserResult->setSegment('some string'); //set up the stub Parser object $stubParser=$this->getMock('Parser'); $stubParser->expects($this->any()) ->method('parse') ->will($this->returnValue($parserResult)); //injecting the stub to my client class $fileHeaderParser= new FileWriter($stubParser); $output=$fileParser->writeStringToFile(); Inside my writeStringToFile() method I'm using $parserResult like this: writeStringToFile(){ //Some code... $parserResult=$parser->parse(); $segment=$parserResult->getSegment();//that's why I set the segment in the test. } Should I mock ParserResult in the first place, so that the mock returns a mock? Is it good design for mocks to return mocks? Is there a better approach to do this all?!

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  • Rapid prototyping and refactoring

    - by Puckl
    Sometimes when I start a small project (like an android app), I don´t know which approach will work out at the end, and I just go for one approach and give it a try. But if I never used this approach before (for a sort of application I´ve never programmed before) it is like stepping into unknown terrain. I don´t know which libraries to use (maybe I have to try out several libraries) and there are so many unkonwns (like: how to get raw audio data in android) So then my development process goes like this: Write a piece of code to see if the approach has a chance. (The more uncertain the approach is, the uglier the code gets) If it works, refactor a lot until it is beautiful I think it could be a waste of time if I planned my software design in detail at this point, it would be like planning a trip without a map. Is this part of aglie development? How do you deal with unknown terrain in software development?

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  • Does The College Matter?

    - by Jonathon
    Does it matter all that much about what college you go to, to get a degree in computer programming/computer science? I didn't do all that well in high school, I actually barely graduated with a general High School Diploma. So getting into a decent college could be difficult. Companies won't deny you just because you got your degree at a college they have never heard of or a community college will they?

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  • Central Exception Handler

    - by J-unior
    Recently I've been thinking about a general ExceptionHandler, that I could initialize once in my app context and inject it everywhere. The idea that it will have quite simple interface with just public void handle(Exception ex), and then according to exception type it should decide what to do, maybe just log it, or show an alert message to the user, or maybe kill the whole app. The question is, what is the prettiest way to write such handler without lots of instanceofs? Unfortunately googling gives me only the default exception handler for RuntimeException that was introduced in Java 5. My first idea is to create an enum, that will have Class field for exception type and it will return the appropriate execution point, for example a concrete exception handler that also implements the interface public void handle(Exception ex), but with the required casting already.

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  • Handling Coding Standards at Work (I'm not the boss)

    - by Josh Johnson
    I work on a small team, around 10 devs. We have no coding standards at all. There are certain things that have become the norm but some ways of doing things are completely disparate. My big one is indentation. Some use tabs, some use spaces, some use a different number of spaces, which creates a huge problem. I often end up with conflicts when I merge because someone used their IDE to auto format and they use a different character to indent than I do. I don't care which we use I just want us all to use the same one. Or else I'll open a file and some lines have curly brackets on the same line as the condition while others have them on the next line. Again, I don't mind which one so long as they are all the same. I've brought up the issue of standards to my direct manager, one on one and in group meetings, and he is not overly concerned about it (there are several others who share the same view as myself). I brought up my specific concern about indentation characters and he thought a better solution would be to, "create some kind of script that could convert all that when we push/pull from the repo." I suspect that he doesn't want to change and this solution seems overly complicated and prone to maintenance issues down the road (also, this addresses only one manifestation of a larger issue). Have any of you run into a similar situation at work? If so, how did you handle it? What would be some good points to help sell my boss on standards? Would starting a grass roots movement to create coding standards, among those of us who are interested, be a good idea? Am I being too particular, should I just let it go? Thank you all for your time. Note: Thanks everyone for the great feedback so far! To be clear, I don't want to dictate One Style To Rule Them All. I'm willing to concede my preferred way of doing something in favor of what suits everyone the best. I want consistency and I want this to be a democracy. I want it to be a group decision that everyone agrees on. True, not everyone will get their way, but I'm hoping that everyone will be mature enough to compromise for the betterment of the group. Note 2: Some people are getting caught up in the two examples I gave above. I'm more after the heart of the matter. It manifests itself with many examples: naming conventions, huge functions that should be broken up, should something go in a util or service, should something be a constant or injected, should we all use different versions of a dependency or the same, should an interface be used for this case, how should unit tests be set up, what should be unit tested, (Java specific) should we use annotations or external config. I could go on.

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  • Is this simple XOR encrypted communication absolutely secure?

    - by user3123061
    Say Alice have 4GB USB flash memory and Peter also have 4GB USB flash memory. They once meet and save on both of memories two files named alice_to_peter.key (2GB) and peter_to_alice.key (2GB) which is randomly generated bits. Then they never meet again and communicate electronicaly. Alice also maintains variable called alice_pointer and Peter maintains variable called peter_pointer which is both initially set to zero. Then when Alice needs to send message to Peter they do: encrypted_message_to_peter[n] = message_to_peter[n] XOR alice_to_peter.key[alice_pointer + n] Where n i n-th byte of message. Then alice_pointer is attached at begining of the encrypted message and (alice_pointer + encrypted message) is sent to Peter and then alice_pointer is incremented by length of message (and for maximum security can be used part of key erased) Peter receives encrypted_message, reads alice_pointer stored at beginning of message and do this: message_to_peter[n] = encrypted_message_to_peter[n] XOR alice_to_peter.key[alice_pointer + n] And for maximum security after reading of message also erases used part of key. - EDIT: In fact this step with this simple algorithm (without integrity check and authentication) decreases security, see Paulo Ebermann post below. When Peter needs to send message to Alice they do analogical steps with peter_to_alice.key and with peter_pointer. With this trivial schema they can send for next 50 years each day 2GB / (50 * 365) = cca 115kB of encrypted data in both directions. If they need more data to send, they simple use larger memory for keys for example with today 2TB harddiscs (1TB keys) is possible to exchange next 50years 60MB/day ! (thats practicaly lots of data for example with using compression its more than hour of high quality voice communication) It Seems to me there is no way for attacker to read encrypted message without keys even if they have infinitely fast computer. because even with infinitely fast computer with brute force they get ever possible message that can fit to length of message, but this is astronomical amount of messages and attacker dont know which of them is actual message. I am right? Is this communication schema really absolutely secure? And if its secure, has this communication method its own name? (I mean XOR encryption is well-known, but whats name of this concrete practical application with use large memories at both communication sides for keys? I am humbly expecting that this application has been invented someone before me :-) ) Note: If its absolutely secure then its amazing because with today low cost large memories it is practicaly much cheeper way of secure communication than expensive quantum cryptography and with equivalent security! EDIT: I think it will be more and more practical in future with lower a lower cost of memories. It can solve secure communication forever. Today you have no certainty if someone succesfuly atack to existing ciphers one year later and make its often expensive implementations unsecure. In many cases before comunication exist step where communicating sides meets personaly, thats time to generate large keys. I think its perfect for military communication for example for communication with submarines which can have installed harddrive with large keys and military central can have harddrive for each submarine they have. It can be also practical in everyday life for example for control your bank account because when you create your account you meet with bank etc.

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  • What should a freelancer's business card have?

    - by Sergio
    For example, when I first started out freelancing a year ago, my business card had my name, email and website - and up top a list of the technologies I'm comfortable with. In retrospect I don't feel this was a wise decision. Why would a potential client know what Python or Ruby is? How could he know what .NET was? I still have a couple of the old batch left, but I'm going to send out for some new cards. What do you recommend we developers have to show on our business cards? Am I correct in thinking listing technologies is meaningless to potential clients?

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  • Should we exclude code for the code coverage analysis?

    - by romaintaz
    I'm working on several applications, mainly legacy ones. Currently, their code coverage is quite low: generally between 10 and 50%. Since several weeks, we have recurrent discussions with the Bangalore teams (main part of the development is made offshore in India) regarding the exclusions of packages or classes for Cobertura (our code coverage tool, even if we are currently migrating to JaCoCo). Their point of view is the following: as they will not write any unit tests on some layers of the application (1), these layers should be simply excluded from the code coverage measure. In others words, they want to limit the code coverage measure to the code that is tested or should be tested. Also, when they work on unit test for a complex class, the benefits - purely in term of code coverage - will be unnoticed due in a large application. Reducing the scope of the code coverage will make this kind of effort more visible... The interest of this approach is that we will have a code coverage measure that indicates the current status of the part of the application we consider as testable. However, my point of view is that we are somehow faking the figures. This solution is an easy way to reach higher level of code coverage without any effort. Another point that bothers me is the following: if we show a coverage increase from one week to another, how can we tell if this good news is due to the good work of the developers, or simply due to new exclusions? In addition, we will not be able to know exactly what is considered in the code coverage measure. For example, if I have a 10,000 lines of code application with 40% of code coverage, I can deduct that 40% of my code base is tested (2). But what happen if we set exclusions? If the code coverage is now 60%, what can I deduct exactly? That 60% of my "important" code base is tested? How can I As far as I am concerned, I prefer to keep the "real" code coverage value, even if we can't be cheerful about it. In addition, thanks to Sonar, we can easily navigate in our code base and know, for any module / package / class, its own code coverage. But of course, the global code coverage will still be low. What is your opinion on that subject? How do you do on your projects? Thanks. (1) These layers are generally related to the UI / Java beans, etc. (2) I know that's not true. In fact, it only means that 40% of my code base

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  • what are the benefits of closure, primarily for PHP?

    - by Patrick
    I am beginning the process of moving code over to PHP 5.3 and one of the most highly touted features of PHP 5.3 is the ability to use closures. My understanding of closures is that they allow anonymous functions, can be assigned to variable names, and have interesting scoping abilities. From my point of view the only seeming benefits in real world applications is the reduction of clutter in the namespace because closures are anonymous. Am I wrong in this? Should I be trying to put closures wherever I code? EDIT: I have already read this post on Javascript closures.

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  • Indie Software Developers - How do I handle taxes?

    - by Connor
    I apologize if this is the wrong site to post on, perhaps someone could point me to the proper place if it is not. Hello, I am 17 years old and currently develop applications/games for Android and iPhone as well as develop internet websites and code a variety of my own projects. I have been very fortunate and have made a large amount of money and continue to make money online to the point where I do not need a stable job, though I'd like to get one after college. I've never held a job anywhere, and have never had to pay taxes. I'm coming into a lot of issues and I am quite confused. I get money from MANY sources- 15 different advertisement networks(!), 4 different payment processors, 5 different affiliate networks and a variety of other sources. All of them pay to different places and at different times (checking account, PayPal, reloadable debit card, ect.) I essentially have a list in a Notepad with names and login information for each source. I have also created a PHP script that uses cURL to grab all the revenue from each service, add it all up, then text me every few hours so I can keep track. It's a mess, but it's working OK, and I can create custom reports (for IRS?). But enough of that, my questions are about taxes in the US, and how indie developers handle it all. I'm at slightly over $250k so far this year, with negligible earnings last year. I have it all stockpiled in a bank account and haven't touched it, I'm a bit scared to. What do I file as? A sole proprietor, a business, just a regular person? How can I handle all of the different revenue sources? (AdSense, CJ, LinkShare) So far none of them have sent me any paperwork on taxes and I've read that I'm supposed to pay taxes quarterly? Do I need paperwork from EACH source to file? Or can I just say I got $x total and that'd be it? What percentage do you pay of total earnings? Average? Should I create an LLC? A corporation? Or stay as a developer? What would be the cheapest options? Could I go to jail? I haven't touched the money except a few dollars to help my parents pay the mortgage once. Any insight would be great. My parents have no idea what I should do, both have no forms of higher education and both have no high school diploma's. They just live day by day with simple jobs. I appreciate any help or experience with this.

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  • form checkboxes different names each into multiple rows database [closed]

    - by Darlene
    Hi i've been at this for hours and need help. Thanks in advice. i have the following tables: tblprequestion quesid| ques tblanswers answerid|quesid | ans |date This is my form: prequestion form <?php $con = mysql_connect("localhost","root","") or die ("Could not connect to DB Server"); $db_selected = mysql_select_db("nbtsdb", $con) or die("Could not locate the DB"); $query3= mysql_query("SELECT * FROM tblprequestions", $con) or die("Cannot Access prequestions description from Server"); echo"<legend> Pre question :</legend>"; echo"<p></p>"; while($row = mysql_fetch_array($query3)) { echo"<p>"; echo"<input type='checkbox' name='question".$row['quesid']."[]' value='yes' />"; echo"<label>".$row['ques']."</label>&nbsp;&nbsp;&nbsp;"; echo"</p>"; } echo"<p></p>"; ?> i would like to know how to get the values from the form for each question (total of 17) to submit into the database. for example tblprequestion quesid| ques 1 Had a cold or fever in the last week? 2 Had minor outpaient surgery? tblanswers answerid|username |quesid | ans |date 1 lisa 1 yes 10/10/12 2 lisa 2 no 10/10/12

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  • When to use HTTP status code 404 in an API

    - by Sybiam
    I am working on a project and after arguing with people at work for about more than a hour. I decided to know what people on stack-exchange might say. We're writing an API for a system, there is a query that should return a tree of Organization or a tree of Goals. The tree of Organization is the organization in which the user is present, In other words, this tree should always exists. In the organization, a tree of goal should be always present. (that's where the argument started). In case where the tree doesn't exist, my co-worker decided that it would be right to answer response with status code 200. And then started asking me to fix my code because the application was falling apart when there is no tree. I'll try to spare flames and fury. I suggested to raise a 404 error when there is no tree. It would at least let me know that something is wrong. When using 200, I have to add special check to my response in the success callback to handle errors. I'm expecting to receive an object, but I may actually receive an empty response because nothing is found. It sounds totally fair to mark the response as a 404. And then war started and I got the message that I didn't understand HTTP status code schema. So I'm here and asking what's wrong with 404 in this case? I even got the argument "It found nothing, so it's right to return 200". I believe that it's wrong since the tree should be always present. If we found nothing and we are expecting something, it should be a 404. More info, I forgot to add the urls that are fetched. Organizations /OrgTree/Get Goals /GoalTree/GetByDate?versionDate=... /GoalTree/GetById?versionId=... My mistake, both parameters are required. If any versionDate that can be parsed to a date is provided, it will return the closes revision. If you enter something in the past, it will return the first revision. If by Id with a id that doesn't exists, I suspect it's going to return an empty response with 200. Extra Also, I believe the best answer to the problem is to create default objects when organizations are created, having no tree shouldn't be a valid case and should be seen as an undefined behavior. There is no way an account can be used without both trees. For that reasons, they should be always present. also I got linked this (one similar but I can't find it) http://viswaug.files.wordpress.com/2008/11/http-headers-status1.png

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  • "Integratable" but not "integrated" GPL

    - by mgibsonbr
    There has been much debate over whether or not merely linking to a piece of code makes it a derivative work. I know FSF says "yes", so according to them I can't dynamically link a non-GPL compatible program to a GPL library and distribute the whole. But I could do that for private use, as long as no code is released to the public. That made me wonder: what if I don't redistribute the GPL code at all? If my program can work alone (reinforcing my claim that it's not a derivative work), but can do more if the GPL library is also installed to the system, couldn't I just release my application under my own licensing terms - without including any GPL code - and post instructions for anyone interested to separately download the GPL code and do the integration "for their private use"? I know it's against the "spirit" of the GPL, so I'm not suggesting it's a good idea to do that. However, this question is bugging me for some time, specially because of the implications of each answer: If I can not do that: can I write another library with a similar API? (before answering "of course you can", remember that having the same API would allow both libraries to be swapped at will by my customers - so I don't need to work too hard on my library or even make it "working". How to determine if a similar program is just similar or is a circumvention attempt?) If I can do that: can I also be paid to perform the service of installing the GPL library for a customer? (I sell them my program, install it in their machines, download and install the GPL library too) can I put the two programs in the same website? In two different CDs? (I know I said the idea was not to redistribute the GPL code, I'm just thinking in excuses people could use to claim they're not redistributing even though they are)

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  • How do I make complex SQL queries easier to write?

    - by DragonLord
    I'm finding it very difficult to write complex SQL queries involving joins across many (at least 3-4) tables and involving several nested conditions. The queries I'm being asked to write are easily described by a few sentences, but can require a deceptive amount of code to complete. I'm finding myself often using temporary views to write these queries, which seem like a bit of a crutch. What tips can you provide that I can use to make these complex queries easier? More specifically, how do I break these queries down into the steps I need to use to actually write the SQL code? Note that I'm the SQL I'm being asked to write is part of homework assignments for a database course, so I don't want software that will do the work for me. I want to actually understand the code I'm writing. More technical details: The database is hosted on a PostgreSQL server running on the local machine. The database is very small: there are no more than seven tables and the largest table has less than about 50 rows. The SQL queries are being passed unchanged to the server, via LibreOffice Base.

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  • Is it bad to join open-source projects as an amateur?

    - by esqew
    I've thought for about six months now that I should join an open-source iPhone or iPad project to hone my skills in Objective-C, but every time I go to do it I see thousands of lines of code on huge projects that I end up convincing myself I would never understand. I always think that my commits would just end up being a hassle for project admins and more senior contributors, so I always back out at the last second. My question essentially is, is it a hassle when an intermediately-experienced programmer joins an open-source project?

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  • Most pain-free time registration software for developers ?

    - by driis
    I work as a consultant in a medium-sized firm. We need to keep track of time spent on individual tasks and which customers to bill to. Our current system for doing this is an old in-house system, that needs to be retired for various reasons. Most developers don't like registering time, so I am looking for the best tool for this job, that minimizes the time needed to register time. Must have features: Must be simple and easy to use. Must have reporting feature to use for billing. Must have an API, so we can integrate in-house tools. Registering time should be based on hours worked (ie. today, worked on Customer A, Task B from 8 AM to 12 AM). TFS integration is a plus, but not needed (ie. register time on a work item) May be open source or a paid product; doesn't really matter. What would you recommend ?

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