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  • What does Symfony Framework offer that Zend Framework does not?

    - by Fatmuemoo
    I have professionally working with Zend Framework for about a year. No major complaints. With some modifications, it has done a good job. I'm beginning to work on a side project where I want to heavily rely on MongoDb and Doctrine. I thought it might be a good idea to broaden my horizons and learn another enterprise level framework. There seems to be a lot a buzz about Symfony. After quickly looking over the site and documentation, I must say I came away pretty underwhelmed. I'm woundering what, if anything, Symfony has to offer that Zend doesn't? What would the advantage be in choosing Symfony?

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  • Quantifying the value of refactoring in commercial terms

    - by Myles McDonnell
    Here is the classic scenario; Dev team build a prototype. Business mgmt like it and put it into production. Dev team now have to continue to deliver new features whilst at the same time pay the technical debt accrued when the code base was a prototype. My question is this (forgive me, it's rather open ended); how can the value of the refactoring work be quantified in commercial terms? As developers we can clearly understand and communicate the value in technical terms, such a the removal of code duplication, the simplification of an object model and so on. But this means little to an executive focussed on the commercial elements. What will mean something to this executive is the dev. team being able to deliver requirements at faster velocity. Just making this statement without any metrics that clearly quantify return on investment (increased velocity in return for resource allocated to refactoring) carries little weight. I'm interested to hear from anyone who has had experience, positive or negative, in relation to the above. ----------------- EDIT ---------------- Thanks for the responses so far, all of which I think are good. What I want to develop is a metric that proves (or disproves!) all of these statements. A report that ties velocity to refactoring and shows a positive effect.

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  • Should I start making connections even if I'm not ready for a job yet?

    - by James
    The first job is always the hardest to get and I'm not exception. I'm 23 years old and I have no college degree but planned on going to college this year if all goes well (CS of course). I'm self-studying java right now. I know most of the topics related to the language besides the more advanced topics and I'm beginning to look at open source projects. I would like to find a job (at least a part time job) after a year or two when I'll gain more experience and learn more about java technologies and other technologies that interest me. Finding a job will be a bit difficult because most of the people (or a lot of them at least) at my current age already have 2 years or more of experience, so I will be somewhat disadvantaged. Should I start building connections and joining websites such as linkedin ? I never bothered to look into it because I'm not much of a social network person. If I start contributing to open source projects and create personal projects for 2 years could I apply for jobs that require 1-2 years of experience? Does this experience count ?

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  • Multi-platform Map Application

    - by Mahdi
    I'm working on a web project (PHP, jQuery) which currently using Google Maps powering up the map functionality of the application, however we need to make it multi-platform like you can go to the dashboard and choose one from 5-10 map providers (which Goolge Maps is just one of them) to underlying your map functionality. So, as the application is supposed to show the data on map, almost in every single place we have to deal with the API provided by that specific map provider. Currently we are thinking about revising our modular structure and/or making something like an adapter for each provider to deal with their native syntax but via our standard methods. I wish to have your ideas and your experiences, specially if you ever made an interface for dealing via 2-3 different map providers. That would helps much and I really appreciate that. If you need any further information, just ask me to update the question. Update: As Vicky Chijwani suggested Mapstraction, now I'm also wondering which one is more better (pros & cons), having an adapter implemented on Javascript or PHP?

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  • Is there really Object-relational impedance mismatch?

    - by user52763
    It is always stated that it is hard to store applications objects in relational databases - the object-relational impedance mismatch - and that is why Document databases are better. However, is there really an impedance mismatch? And object has a key (albeit it may be hidden away by the runtime as a pointer to memory), a set of values, and foreign keys to other objects. Objects are as much made up of tables as it is a document. Neither really fit. I can see a use for databases to model the data into specific shapes for scenarios in the application - e.g. to speed up database lookup and avoid joins, etc., but won't it be better to keep the data as normalized as possible at the core, and transform as required?

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  • What was the first consumer-oriented hardware/software solution?

    - by Maksee
    We all know the story of the personal computer as a consumer-oriented product. But I just thought that real end user solution should have appeared before that time. So a product that was probably expensive, but allowed using it as a service charging for it, for example computer-terminal for transport time-table access or game machine. On the other site, the video terminals as we know them appeared not so long ago. So if there was something like this, this could be hardware/software most likely offering no interactivity, but probably printing some information based on user actions.

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  • How important is Discrete Mathematics for a Computer Scientist?

    - by mort
    As the title says, How important is Discrete Mathematics for a Computer Scientist? Background: I'm pursuing a Master's degree with a focus on fundamentals such as Algorithms, Complexity and Computability Theory and Programming Languages to get a good foundation for working in the field of Parallel Computing. Some more background: My university grants a lot of freedom in the choices of courses for my Master's degree. It's officially called "Software Engineering", but due to a the broad range of electives, a different focus is possible. Interestingly, none of the electives is a lecture in Math! I'm thinking about doing a course about Discrete Mathematics that would take half a semester to complete successfully, even if I can't use it for my degree. So with this question I'm trying to find out if the effort is justifiable.

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  • What icon would you use to denote an XML (not rss) feed available [closed]

    - by mplungjan
    Given two sites - one aimed at regular users and one for automated access. The first site is the best known, so many are (still) screen scraping that site for data. It is preferable to have move to the other site where the same data is available in xml format. What icon (+text/title) on a page you are about to screen scrape, would make you pay attention and decide to see what that was about? Examples from Google Image search for xml icon

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  • Pros and cons of hosted scripts

    - by P.Brian.Mackey
    I have seen some developers use hosted scripts to link their libraries. cdn.jquerytools.org is one example. I have also seen people complain that a hosted script link has been hijacked. How safe is using hosted scripts in reality? Are the scripts automatically updated? For example, if jQuery 5 goes to 6 do I automatically get version 6 or do I need to update my link? I also see that Google has a large set of these scripts setup for hosting. What are the pros and cons?

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  • Why does Java allow to implement different interfaces, each containing a method with the same signature?

    - by Software Engeneering Learner
    I've recently found that I can have two interfaces containing method with the same signature as a method in the other interface. And then I can have an interface or class that implements both of that interfaces. So the descendant class/interface has implicitly implements two different methods as a one method. Why is this allowed in Java? I can see a numerous problems that arises from that. Even eclipse only can find out about implementations for only one interface method, but for the second one it doesn't show any implementations at all. Also I believe there would be problems with automatic refactoring, like when you would like to change the signature of the method in one of the interfaces and IDE won't be able to correctly change that signature in all implementations, as they implement two different interfaces and how will IDE know what interface method it implementation descends. Why don't just make a compiler error like 'interfaces method names clashes' or something like that?

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  • UML Diagrams of Multi-Threaded Applications

    - by PersonalNexus
    For single-threaded applications I like to use class diagrams to get an overview of the architecture of that application. This type of diagram, however, hasn’t been very helpful when trying to understand heavily multi-threaded/concurrent applications, for instance because different instances of a class "live" on different threads (meaning accessing an instance is save only from the one thread it lives on). Consequently, associations between classes don’t necessarily mean that I can call methods on those objects, but instead I have to make that call on the target object's thread. Most literature I have dug up on the topic such as Designing Concurrent, Distributed, and Real-Time Applications with UML by Hassan Gomaa had some nice ideas, such as drawing thread boundaries into object diagrams, but overall seemed a bit too academic and wordy to be really useful. I don’t want to use these diagrams as a high-level view of the problem domain, but rather as a detailed description of my classes/objects, their interactions and the limitations due to thread-boundaries I mentioned above. I would therefore like to know: What types of diagrams have you found to be most helpful in understanding multi-threaded applications? Are there any extensions to classic UML that take into account the peculiarities of multi-threaded applications, e.g. through annotations illustrating that some objects might live in a certain thread while others have no thread-affinity; some fields of an object may be read from any thread, but written to only from one; some methods are synchronous and return a result while others are asynchronous that get requests queued up and return results for instance via a callback on a different thread.

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  • Writing custom Message Formatter for SOAP basicHttpBinding

    - by Lijo
    I have a WSDL published by our service development team. It is using SOAP and basicHttpBinding. I can add the service reference to the project using Add Service Reference option in Visual Studio. I need to develop the WCF client. I need to use custom Message Formatter (for mapping between Messages and CLR types). Can you please show how to write the custom Message Formatter (in C# )for the following wsdl? Note: I am planning to use custom Message Formatter due to an issue mentioned in http://stackoverflow.com/questions/12316884/header-namespace-mismatch-issue WSDL <definitions xmlns:import0="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:import2="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:import1="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:tns="urn:thinktecture-com:demos:restaurantservice:wsdl:v1" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" name="RestauarntService" targetNamespace="urn:thinktecture-com:demos:restaurantservice:wsdl:v1" xmlns="http://schemas.xmlsoap.org/wsdl/"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <types> <xsd:schema> <xsd:import schemaLocation="RestaurantData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:data:v1" /> <xsd:import schemaLocation="RestaurantHeaderData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" /> <xsd:import schemaLocation="RestaurantMessages.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:messages:v1" /> </xsd:schema> </types> <message name="getRestaurantsIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:getRestaurants" /> </message> <message name="getRestaurantsOut"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:getRestaurantsResponse" /> </message> <message name="lijosCustomFaultMessage"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="fault" element="import2:customFault" /> </message> <message name="userCredentialsIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import1:userCredentials" /> </message> <message name="addRestaurantIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:addRestaurant" /> </message> <message name="addRestaurantInHeader1"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import1:userCredentials" /> </message> <message name="customFaultIn"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <part name="parameters" element="import2:customFault" /> </message> <portType name="RestauarntServiceInterface"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <operation name="getRestaurants"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:getRestaurantsIn" /> <output message="tns:getRestaurantsOut" /> <fault name="lijosCustomFaultMessage" message="tns:lijosCustomFaultMessage" /> </operation> <operation name="userCredentials"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:userCredentialsIn" /> </operation> <operation name="addRestaurant"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:addRestaurantIn" /> </operation> <operation name="customFault"> <wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" /> <input message="tns:customFaultIn" /> </operation> </portType> <binding name="BasicHttpBinding_RestauarntServiceInterface" type="tns:RestauarntServiceInterface"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" /> <operation name="getRestaurants"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:getRestaurantsIn" style="document" /> <input> <soap:body use="literal" /> </input> <output> <soap:body use="literal" /> </output> <fault name="lijosCustomFaultMessage"> <soap:fault use="literal" name="lijosCustomFaultMessage" namespace="" /> </fault> </operation> <operation name="userCredentials"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:userCredentialsIn" style="document" /> <input> <soap:body use="literal" /> </input> </operation> <operation name="addRestaurant"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:addRestaurantIn" style="document" /> <input> <soap:body use="literal" /> <soap:header message="tns:addRestaurantInHeader1" part="parameters" use="literal" /> </input> </operation> <operation name="customFault"> <soap:operation soapAction="urn:thinktecture-com:demos:restaurantservice:wsdl:v1:customFaultIn" style="document" /> <input> <soap:body use="literal" /> </input> </operation> </binding> <service name="RestauarntServicePort"> <port name="RestauarntServicePort" binding="tns:BasicHttpBinding_RestauarntServiceInterface"> <soap:address location="http://localhost/RestauarntService" /> </port> </service> </definitions>?? RestaurantData.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantData" targetNamespace="urn:thinktecture-com:demos:restaurantservice:data:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:data:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:complexType name="restaurantInfo"> <xs:sequence> <xs:element name="restaurantID" type="xs:int" /> <xs:element name="name" type="xs:string" /> <xs:element name="address" type="xs:string" /> <xs:element name="city" type="xs:string" /> <xs:element name="state" type="xs:string" /> <xs:element name="zip" type="xs:string" /> <xs:element name="openFrom" type="xs:time" /> <xs:element name="openTo" type="xs:time" /> </xs:sequence> </xs:complexType> <xs:complexType name="restaurantsList"> <xs:sequence> <xs:element name="restaurant" type="restaurantInfo" maxOccurs="unbounded" minOccurs="0" /> </xs:sequence> </xs:complexType> <xs:complexType name="customFault"> <xs:sequence> <xs:element name="errorCode" type="xs:string"/> <xs:element name="message" type="xs:string"/> <xs:element maxOccurs="unbounded" minOccurs="0" name="messages" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:schema> RestaurantHeaderData.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantHeaderData" targetNamespace="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:headerdata:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:complexType name="credentials"> <xs:sequence> <xs:element name="username" type="xs:string" /> <xs:element name="password" type="xs:string" /> </xs:sequence> </xs:complexType> <xs:element name="userCredentials" type="credentials"> </xs:element> </xs:schema> ? RestaurantMessages.xsd <?xml version="1.0" encoding="utf-8" ?> <xs:schema id="RestaurantMessages" targetNamespace="urn:thinktecture-com:demos:restaurantservice:messages:v1" elementFormDefault="qualified" xmlns="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:mstns="urn:thinktecture-com:demos:restaurantservice:messages:v1" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:import="urn:thinktecture-com:demos:restaurantservice:data:v1"> <xs:import id="RestaurantData" schemaLocation="RestaurantData.xsd" namespace="urn:thinktecture-com:demos:restaurantservice:data:v1"> </xs:import> <xs:element name="getRestaurants"> <xs:complexType> <xs:sequence> <xs:element name="zip" type="xs:string" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="getRestaurantsResponse"> <xs:complexType> <xs:sequence> <xs:element name="restaurants" type="import:restaurantsList" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="addRestaurant"> <xs:complexType> <xs:sequence> <xs:element name="restaurant" type="import:restaurantInfo" /> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="customFault" type="import:customFault" /> </xs:schema>

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  • Is reliance on parametrized queries the only way to protect against SQL injection?

    - by Chris Walton
    All I have seen on SQL injection attacks seems to suggest that parametrized queries, particularly ones in stored procedures, are the only way to protect against such attacks. While I was working (back in the Dark Ages) stored procedures were viewed as poor practice, mainly because they were seen as less maintainable; less testable; highly coupled; and locked a system into one vendor; (this question covers some other reasons). Although when I was working, projects were virtually unaware of the possibility of such attacks; various rules were adopted to secure the database against corruption of various sorts. These rules can be summarised as: No client/application had direct access to the database tables. All accesses to all tables were through views (and all the updates to the base tables were done through triggers). All data items had a domain specified. No data item was permitted to be nullable - this had implications that had the DBAs grinding their teeth on occasion; but was enforced. Roles and permissions were set up appropriately - for instance, a restricted role to give only views the right to change the data. So is a set of (enforced) rules such as this (though not necessarily this particular set) an appropriate alternative to parametrized queries in preventing SQL injection attacks? If not, why not? Can a database be secured against such attacks by database (only) specific measures? EDIT Emphasis of the question changed slightly, in the light of the initial responses received. Base question unchanged. EDIT2 The approach of relying on paramaterized queries seems to be only a peripheral step in defense against attacks on systems. It seems to me that more fundamental defenses are both desirable, and may render reliance on such queries not necessary, or less critical, even to defend specifically against injection attacks. The approach implicit in my question was based on "armouring" the database and I had no idea whether it was a viable option. Further research has suggested that there are such approaches. I have found the following sources that provide some pointers to this type of approach: http://database-programmer.blogspot.com http://thehelsinkideclaration.blogspot.com The principle features I have taken from these sources is: An extensive data dictionary, combined with an extensive security data dictionary Generation of triggers, queries and constraints from the data dictionary Minimize Code and maximize data While the answers I have had so far are very useful and point out difficulties arising from disregarding paramaterized queries, ultimately they do not answer my original question(s) (now emphasised in bold).

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  • Architecture- Tracking lead origin when data is submitted by a server

    - by Kevin
    I'm looking for some assistance in determining the least complex strategy for tracking leads on an affiliate's website. The idea is to make the affiliate's integration with my application as easy as possible. I've run into theoretical barriers, so i'm here to explore other options. Application Overview: This is a lead aggregation / distribution platform. We will be focusing on the affiliate portion of this website. Essentially affiliates sign up, enter in marketing campaigns and sell us their conversions. Problem to be solved: We want to track a lead's origin and other events on the affiliate site. We want to know what pages, ads, and forms they viewed before they converted. This can easily be solved with pixel tracking. Very straightforward. Theoretical Issues: I thought I would ask affiliates to place the pixel where I could log impressions and set a third party cookie when the pixel is first called. Then I could associate future impressions with this cookie. The problem is that when the visitor converts on the affiliate's site and I receive their information via HTTP POST from the Affiliate's server I wouldn't be able to access the cookie and associate it with the lead record unless the lead lands on my processor via a redirect and is then redirected back to the affiliate's landing page. I don't want to force the affiliates to submit their forms directly to my tracking site, so allowing them to make an HTTP POST from their server side form processor would be ideal. I've considered writing JavaScript to set a First Party cookie but this seems to make things more complicated for the affiliate. I also considered having the affiliate submit the lead's data via a conversion pixel. This seems to be the most ideal scenario so far as almost all pixels are as easy as copy/paste. The only complication comes from the conversion pixel- which would submit all of the lead information and the request would come from the visitor's machine so I could access my third party cookie.

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  • How to write a product definition?

    - by Skarab
    I would like to learn how to write a software product definition. Therefore I am looking for online materials or books, which would help me to learn more about this topic. I would like to learn: what must be in what must not to be in how to make a product definition to sell internally the product finding balance between use case descriptions (the why), and feature descriptions (the how). ... I am aware that it is not something that can learn in 15 minutes but I think such a discussion could help me to have a good start.

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  • Nested languages code smell

    - by l0b0
    Many projects combine languages, for example on the web with the ubiquitous SQL + server-side language + markup du jour + JavaScript + CSS mix (often in a single function). Bash and other shell code is mixed with Perl and Python on the server side, evaled and sometimes even passed through sed before execution. Many languages support runtime execution of arbitrary code strings, and in some it seems to be fairly common practice. In addition to advice about security and separation of concerns, what other issues are there with this type of programming, what can be done to minimize it, and is it ever defensible (except in the "PHB on the shoulder" situation)?

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  • What type of encoding can I use to make a string shorter?

    - by Abe Miessler
    I am interested in encoding a string I have and I am curious if there is a type of encoding that can be used that will only include alpha and numeric characters and would preferably shorten the number of characters needed to represent the string. So far I have looked at using Base64 encoding to do this but it appears to make my string longer and sometimes includes == which I would like to avoid. Example: test name|120101 becomes dGVzdCBuYW1lfDEyMDEwMQ== which goes from 16 to 24 characters and includes non-alphanumeric. Does anyone know of a different type of encoding that I could use that will achieve my requirements? Bonus points if it's either built into the .NET framework or there exists a third party library that will do the encoding.

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  • How do I resolve this exercise on C++? [closed]

    - by user40630
    (Card Shuffling and Dealing) Create a program to shuffle and deal a deck of cards. The program should consist of class Card, class DeckOfCards and a driver program. Class Card should provide: a) Data members face and suit of type int. b) A constructor that receives two ints representing the face and suit and uses them to initialize the data members. c) Two static arrays of strings representing the faces and suits. d) A toString function that returns the Card as a string in the form “face of suit.” You can use the + operator to concatenate strings. Class DeckOfCards should contain: a) A vector of Cards named deck to store the Cards. b) An integer currentCard representing the next card to deal. c) A default constructor that initializes the Cards in the deck. The constructor should use vector function push_back to add each Card to the end of the vector after the Card is created and initialized. This should be done for each of the 52 Cards in the deck. d) A shuffle function that shuffles the Cards in the deck. The shuffle algorithm should iterate through the vector of Cards. For each Card, randomly select another Card in the deck and swap the two Cards. e) A dealCard function that returns the next Card object from the deck. f) A moreCards function that returns a bool value indicating whether there are more Cards to deal. The driver program should create a DeckOfCards object, shuffle the cards, then deal the 52 cards. This above is the exercise I'm trying to solve. I'd be very much appreciated if someone could solve it and explain it to me. The main idea of the program is quite simple. What I don't get is how to build the constructor for the class DeckOfCards and how to generate the 52 cards of the deck with different suits and faces. Untill now I've managed to do this: #include <iostream> #include <vector> using namespace std; /* * */ /* a) Data members face and suit of type int. b) A constructor that receives two ints representing the face and suit and uses them to initialize the data members. c) Two static arrays of strings representing the faces and suits. d) A toString function that returns the Card as a string in the form “face of suit.” You can use the + operator to concatenate strings. */ class Card { public: Card(int, int); string toString(); private: int suit, face; static string faceNames[13]; static string suitNames[4]; }; string Card::faceNames[13] = {"Ace","Two","Three","Four","Five","Six","Seven","Eight","Nine","Ten","Queen","Jack","King"}; string Card::suitNames[4] = {"Diamonds","Clubs","Hearts","Spades"}; string Card::toString() { return faceNames[face]+" of "+suitNames[suit]; } Card::Card(int f, int s) :face(f), suit(s) { } /* Class DeckOfCards should contain: a) A vector of Cards named deck to store the Cards. b) An integer currentCard representing the next card to deal. c) A default constructor that initializes the Cards in the deck. The constructor should use vector function push_back to add each Card to the end of the vector after the Card is created and initialized. This should be done for each of the 52 Cards in the deck. d) A shuffle function that shuffles the Cards in the deck. The shuffle algorithm should iterate through the vector of Cards. For each Card, randomly select another Card in the deck and swap the two Cards. e) A dealCard function that returns the next Card object from the deck. f) A moreCards function that returns a bool value indicating whether there are more Cards to deal. */ class DeckOfCards { public: DeckOfCards(); void shuffleCards(); Card dealCard(); bool moreCards(); private: vector<Card> deck(52); int currentCard; }; int main(int argc, char** argv) { return 0; } DeckOfCards::DeckOfCards() { //I'm stuck here I have no idea of what to take out of here. //I still don't fully get the idea of class inside class and that's turning out as a problem. I try to find a way to set the suits and faces members of the class Card but I can't figure out how. for(int i=0; i<deck.size(); i++) { deck[i]//....There is no function to set them. They must be set when initialized. But how?? } } For easier reading: http://pastebin.com/pJeXMH0f

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  • Permissions and MVC

    - by not-rightfold
    I’m in the progress of developing a web application. This web application is mostly a CRUD interface, although some users are only allowed to perform some actions and see only some parts of views. What would be a reasonable way to handle user permissions, given that some parts of views are not available to users? I was thinking of having a function hasPermission(permission) that returns true iff the current user has the given permission, although it would require conditionals around all parts of views that are only visible to some users. For example: {% if has_permission('view_location') %} {{ product.location }} {% endif %} I’m fearing this will become an ugly and unreadable mess, especially since these permissions can get kind of complicated. How is this problem commonly solved in web applications? I’m considering using Haskell with Happstack or Python with Django.

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  • An ideal way to decode JSON documents in C?

    - by AzizAG
    Assuming I have an API to consume that uses JSON as a data transmission method, what is an ideal way to decode the JSON returned by each API resource? For example, in Java I'd create a class for each API resource then initiate an object of that class and consume data from it. for example: class UserJson extends JsonParser { public function UserJson(String document) { /*Initial document parsing goes here...*/ } //A bunch of getter methods . . . . } The probably do something like this: UserJson userJson = new UserJson(jsonString);//Initial parsing goes in the constructor String username = userJson.getName();//Parse JSON name property then return it as a String. Or when using a programming language with associative arrays(i.e., hash table) the decoding process doesn't require creating a class: (PHP) $userJson = json_decode($jsonString);//Decode JSON as key=>value $username = $userJson['name']; But, when I'm programming in procedural programming languages (C), I can't go with either method, since C is neither OOP nor supports associative arrays(by default, at least). What is the "correct" method of parsing pre-defined JSON strings(i.e., JSON documents specified by the API provider via examples or documentation)? The method I'm currently using is creating a file for each API resource to parse, the problem with this method is that it's basically a lousy version of the OOP method, as it looks exactly like the OOP method but doesn't provide any OOP benefits(e.g., can't pass an object of the parser, etc.). I've been thinking about encapsulating each API resource parser file in a publicly accessed structure(pointing all functions/publicly usable variables to the structure) then accessing the parser file code from within the structure(parser.parse(), parser.getName(), etc.). As this way looks a bit better than the my current method, it still just a rip off the OOP way, isn't it? Any suggestions for methods to parse JSON documents on procedural programming lanauges? Any comments on the methods I'm currently using(either 3 of them)?

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  • A way to return multiple return values from a method: put method inside class representing return value. Is it a good design?

    - by john smith optional
    I need to return 2 values from a method. My approach is as follows: create an inner class with 2 fields that will be used to keep those 2 values put the method inside that class instantiate the class and call the method. The only thing that will be changed in the method is that in the end it will assign those 2 values to the fields of the instance. Then I can address those values by referencing to the fields of that object. Is it a good design and why?

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  • How to have a maintainable and manageable Javascript code base

    - by dade
    I am starting a new job soon as a frontend developer. The App I would be working on is 100% Javascript on the client side. all the server returns is an index page that loads all the Javascript files needed by the app. Now here is the problem: The whole of the application is built around having functions wrapped to different namespaces. And from what I see, a simple function like rendering the HTML of a page can be accomplished by having a call to 2 or more functions across different namespace... My initial thought was "this does not feel like the perfect solution" and I can just envisage a lot of issues with maintaining the code and extending it down the line. Now I would soon start working on taking the project forward and would like to have suggestions on good case practices when it comes to writing and managing a relatively large amount of javascript code.

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  • Recreate JoliCloud app list

    - by Josh
    I was wondering if there was any tutorial on how to recreate the pagination system used on JoliCloud. The system shows the amount of pages at the bottom along with what page you are on. It is kind of like the iOS springboard. I would like for it to get the apps via a MySQL query, but that's besides the point. I've searched Google and have found no answers on how to do this. A screen shot of the pagination system is below.

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  • Good library for search text tokenization

    - by Chris Dutrow
    Looking to tokenize some text in the same or similar way in which a search engine would do it. The reason we are doing this is so that we can run some statistical analysis on the tokens. The language we are using is python, so would prefer a library in that language, but could probably set something up to use another language if necessary. Example Original token: We have some great burritos! More simplified: (remove plurals and punctuation) We have some great burrito Even more simplified: (remove superfluous words) great burrito Best: (recognize positive and negative meaning): burrito -positive-

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  • Dark or light theme for Android apps?

    - by Philip Sheard
    My app allows the user to choose between a dark and a light theme, but which should it use as the default? It is a field sales app, a kind of glorified invoicing app for enterprise users. It is much larger than most apps in Google Play, and targets a vertical market. Originally I developed the app with a dark font, which was fairly standard at the time. That is still my personal preference, but most modern apps seem to have a light font.

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