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  • C++ "if then else" template substitution

    - by duli
    I would like to declare a template as follows: template <typename T> { if objects of class T have method foo(), then const int k=1 else if class has a static const int L then const int k=L else const int k=0; } How can I do this? In general, I would like a mechanism for setting static consts based on properties of T (or typedef defined inside T).

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  • MongoDB-PHP: JOIN-like query

    - by mdm414
    Here are the objects: courses { "name" : "Biology", "_id" : ObjectId("4b0552b0f0da7d1eb6f126a1") } students { "name" : "Joe", "classes" : [ { "$ref" : "courses", "$id" : ObjectId("4b0552b0f0da7d1eb6f126a1") } ], "_id" : ObjectId("4b0552e4f0da7d1eb6f126a2") } Using the PHP Mongo Class, how do I get all the students that has a biology course? Thanks

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  • Tuples of unknown size/parameter types

    - by myahya
    I need to create a map, from integers to sets of tuples, the tuples in a single set have the same size. The problem is that the size of a tuple and its parameter types can be determined at runtime, not compile time. I am imagining something like: std::map<int, std::set<boost::tuple> > but not exctly sure how to exactly do this, bossibly using pointers. The purpose of this is to create temporary relations (tables), each with a unique identifier (key), maybe you have another approach.

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  • Where do Java Applets live?

    - by Wendi Peters
    I'm trying to figure out where java Applets that I run from the browser live. I'm using Firefox 3.0 on Windows XP with Java 1.6 if that makes any difference. From the Java Control Panel on the toolbar, I can access "Temporary Internet Files - Settings" to find the Java cache. From there I can show the resources and see a file called "dws2010066.dat". Does this resource correspond to a file on disk? I did a search in the Java cache/my whole computer and came up empty handed.

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  • jax-ws: how to get a handle to start/end of processing incoming soap message

    - by Gerard
    Situation: jax-ws web service on Weblogic appserver; wsdl first development, jaxb customizations in external binding file. I would like to get a handle to the actual jaxb context that will process the incoming soap xml message, before it has been unmarshalled into java objects. Then I would like to get the unmarshaller of this jaxb context - the one that actually will be used during the unmarshalling. And then setup some properties of this unmarshaller (e.g. listener and idresolver).

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  • dictionary of lists of dictionaries in python

    - by Andy
    I'm a perl scripter working in python and need to know a way to do the following perl in python. $Hash{$key1}[$index_value]{$key2} = $value; I have seen the stackoverflow question here: List of dictionaries, in a dictionary - in Python I still don't understand what self.rules is doing or if it works for my solution. My data will be coming from files, and will I will be using regexes to capture to temporary variables until ready to store in the data structure. If you need to ask, the order related to the $index_value is important and would like to be maintained as an integer. Any suggestions are appreciated or if you think I need to rethink data structures with Python that would be helpful.

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  • Question regarding factory pattern

    - by eriks
    I have a factory class to build objects of base class B. The object (D) that uses this factory received a list of strings representing the actual types. What is the correct implementation: the factory receives an Enum (and uses switch inside the Create function) and D is responsible to convert the string to Enum. the factory receives a string and checks for a match to a set of valid strings (using ifs') other implementation i didn't think of.

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  • Bind DataGrid to Dictionary in ASP.NET

    - by mcoolbeth
    In ASP.NET, binding a DataGrid to a list of objects is super-easy. I end up with a row for each object in the list, and any cell in a given row is bound to a property of the corresponding object. However, suppose one of the properties of my object is a dictionary, and each is expected to contain a specific key. Is there any way to bind one of my DataGridColumns to that dictionary key? Thanks.

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  • MS SQL Error: Primary file group is full

    - by aximili
    I have a very large table in my database and I am starting to get this error Could not allocate a new page for database 'mydatabase' because of insufficient disk space in filegroup 'PRIMARY'. Create the necessary space by dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. How do you fix this error? I don't understand the suggestions there.

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  • How come nobody wrote RadioMenuItems class for Winforms?

    - by Pavel Radzivilovsky
    Or maybe google is just not so friendly to me? What I want is this simple thing: constructor that accepts an array of menu item objects Value get/set property that would set all the Checked properties right bind to all Clicked events of the supplied items and provide One event Working DataBind facilities If you encountered such a nice thing around, please direct me. No need for manual do-it-in-your-form1.cs-class links, please. This I can do myself.

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  • Bug when drawing a QImage on a widget with PIL and PyQt

    - by oulipo
    I'm trying to write a small graphic application, and I need to construct some image using PIL that I show in a widget. The image is correctly constructed (I can check with im.show()), I can convert it to a QImage, that I can save normally to disk (using QImage.save), but if I try to draw it directly on my QWidget, it only show a white square. Here I commented out the code that is not working (converting the Image into QImage then QPixmap result in a white square), and I made a dirty hack to save the image to a temporary file and load it directly in a QPixmap, which work but is not what I want to do https://gist.github.com/f6d479f286ad75bf72b7 Someone has an idea? If it can help, when I try to save my QImage in a BMP file, I can access its content, but if I try to save it to a PNG it is completely white

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  • ETL : Tracking changes to data using Materialized View log

    - by avinash
    I am into designing ETL with source and target database as oracle Standard Edition. For ETL purpose I need to get the changed data everytime.Client does not want any changes to be made in source objects. Is it feasible to create Materialized view log on source database using dblink to track Inser/Update/Delete on the identified tables. Thanks and Regards

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  • How can I conditionally only log something if it's a certain Class?

    - by BryanWheelock
    Something like this: if self.class == "User": logging.debug("%s non_pks were found" % (str(len(non_pks))) ) In [2]: user = User.objects.get(pk=1) In [3]: user.class Out[3]: In [4]: if user.class == 'django.contrib.auth.models.User': print "yes" ...: In [5]: user.class == 'django.contrib.auth.models.User' Out[5]: False In [6]: user.class == 'User' Out[6]: False In [7]: user.class == "" Out[7]: False

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  • accessing values in a Map container, whose values were passed on as a stream

    - by wilson88
    I am trying to get access to the object values of the objects that were sent as a stream from one class to ano ther.Aparently I can view the objects via their keys but am not so sure how to get to the values.ie Bid- values trdId,qty, price. If possible you can demostrate how I can make comparison for the prices in the containers buyers and sellers for the prices. code is as below: void Auctioneer::printTable(map bidtable) { map<int, Bid*>::const_iterator iter; cout << "\t\tBidID | TradID | Type | Qty | Price \n\n"; for(iter=bidtable.begin(); iter != bidtable.end(); iter++)//{ cout << iter->second->toString() << endl<<"\n"; //------------------------------------------------------------------------- // Creating another map for the sellers. cout<<"These are the Sellers bids\n\n"; map<int, Bid*> sellers(bidtable); sellers.erase(10);sellers.erase(11);sellers.erase(12);sellers.erase(13);sellers.erase(14); sellers.erase(15);sellers.erase(16); sellers.erase(17);sellers.erase(18);sellers.erase(19); for(iter=sellers.begin(); iter != sellers.end(); iter++) cout << iter->second->toString() << endl<<"\n"; //-------------------------------------------------------------------------- // Creating another map for the sellers. cout<<"These are the Buyers bids\n\n"; map<int, Bid*> buyers(bidtable); buyers.erase(0);buyers.erase(1);buyers.erase(2);buyers.erase(3);buyers.erase(4);buyers.erase(5); buyers.erase(6);buyers.erase(7); buyers.erase(8);buyers.erase(9); for(iter=buyers.begin(); iter != buyers.end(); iter++) //sellers.erase(10); cout << iter->second->toString() << endl<<"\n";

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  • Salesforce consuming XML and display data in Visualforce report

    - by JavaKungFu
    Firstly, this question requires a bit of introduction so please bear with me. The high level is that I am connecting to a outside web service which will return some XML to my apex controller. The idea is that I want to display the XML returned into a nice tabular format in a VisualForce page. The format of the XML coming back will look something like this: <Wrapper><reportTable name='table_id' title='Report Title'> <row> <Element1><![CDATA[campaign_id]]></Element1> <Element2><![CDATA[577373]]></Element2> <Element3><![CDATA[4129]]></Element3> <Element4 dataFormat='2' dataSuffix='%'><![CDATA[0.7151]]></Element4> <Element5><![CDATA[2010-04-04]]></Element5> <Element6><![CDATA[2010-05-03]]></Element6> </row> </reportTable> ... Now currently I am using the XMLdom utility class (developed by SF for XML functions) to map this data into a custom object "reportTable" which contains a list of "row" custom objects. The reason I am building it out this way is because I don't know how many elements will be in each row, nor the number of rows. The Visualforce page looks something like this: <table><apex:repeat value="{!reportTables}" var="table"> <apex:repeat value="{!table.rows}" var="row"> <tr> <apex:repeat value="{!row.ColumnValue}" var="column"> <apex:repeat value="{!column}" var="value"> <td> <apex:outputText value="{!value}" /> </td> </apex:repeat> </apex:repeat> </tr> </apex:repeat> Questions are: 1) Does this seem like a good approach to the problem? 2) Is there a simpler/better way to consume the XML besides writing my own custom objects to map VF to? Open to any and all suggestions. I really hope there is a better way than building the HTML table myself, as then I also have to deal with styling and alignment etc. Thanks.

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  • When should I stub out a type by manually creating a "stub" version, rather than using a mocking fra

    - by Ben Aston
    Are there any circumstances where it is favourable to manually create a stub type, as opposed to using a mocking framework (such as Rhino Mocks) at the point of test. We take both these approaches in our projects. My gut feel when I look at the long list of stub versions of objects is that it will add maintenance overhead, and moves the implementation of the stub away from the point of test.

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  • Hibernate proxy serialization and receive on client side.

    - by Bubba88
    I lack understanding of how does the generated proxy class object (CGLib enhanced POJO) is transferred to the remote client and still pertains its ability to generate Lazy Init. Exceptions. Does that mean that there is some kind of contract that all the transferred objects of some kind of class (a proxy) will be reinstantiated as proxies again? Where does the client obtain those generated classes? Sorry, but I totally do not understand.

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  • Why would you need to run regasm and caspol on a .net component more than once?

    - by Craig Johnston
    Why would you need to run regasm and caspol on a .NET component more than once? I have a COM client that uses a .NET component residing on another machine. Consequently I need to run regasm and caspol on this .NET component. What could cause there to be the need to do this again on the same machine to the same component? Is the effect of regasm and caspol only temporary? Or can I assume that someone has reset or cleared something on a machine if I am having to do this again?

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  • Caching the struct Object

    - by PRamod
    How do I create a cache for a struct pointer object in Objective-C? Is there any third party component for caching objects as Java and .NET have? I have the following struct: typedef struct _news { references char *headline; char *story_url; } news; I have a double pointer for the above struct in an interface class. I would like to cache it for some time using Objective-C.

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  • In Ruby on Rails, why will story.votes return an empty Array object, but story.votes.create will act

    - by Jian Lin
    In Ruby on Rails, say a Story object can "has_many" Vote objects (a story is voted "hot" by many users). So when we do a s = Story.find(:first) s is a Story object, and say s.votes returns [] and s.votes.class returns Array So clearly, s.votes is an empty Array object. At this time, when s.votes.create is called, it actually invokes a method of the Vote class? How come an Array class object can invoke a Vote class method?

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  • Java object to XML Elements?

    - by DaveKub
    I'm working on a webservices client app and I have it mostly working. I can retrieve and read data from the third-party webservice fine. Now I need to submit some data and I'm stuck. The classes for the objects I'm retrieving/submitting were generated from XSD files via the xjc tool. The part I'm stuck on is turning one of those objects into an XML tree to submit to the webservice. When I retrieve/send a request from/to the ws, it contains a 'payload' object. This is defined in java code as (partial listing): @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "PayloadType", propOrder = { "compressed", "document", "any", "format" }) public class PayloadType { @XmlElement(name = "Compressed") protected String compressed; @XmlElement(name = "Document") protected List<String> document; @XmlAnyElement protected List<Element> any; protected String format; public List<Element> getAny() { if (any == null) { any = new ArrayList<Element>(); } return this.any; } } The only field I'm concerned with is the 'any' field which contains an XML tree. When I retrieve data from the ws, I read that field with something like this: ('root' is of org.w3c.dom.Element type and is the result of calling 'getAny().get(0)' on the payload object) NodeList nl = root.getElementsByTagName("ns1:Process"); // "ns1:Process" is an XML node to do something with if (nl != null && nl.getLength() > 0) { for (int i = 0; i < nl.getLength(); i++) { Element proc = (Element) nl.item(i); try { // do something with the 'proc' Element here... } catch (Exception ex) { // handle problems here... } } } Submitting data is where I'm stuck. How do I take a java object created from one of the classes generated from XSD and turn it into an Element object that I can add to the 'any' List of the payload object?? For instance, if I have a DailyData class and I create and populate it with data: DailyData dData = new DailyData(); dData.setID = 34; dData.setValues = "3,5,76,23"; How do I add that 'dData' object to the 'any' List of the payload object? It has to be an Element. Do I do something with a JAXBContext marshaller? I've used that to dump the 'dData' object to the screen to check the XML structure. I'm sure the answer is staring me in the face but I just can't see it! Dave

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