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  • CoffeeScript Class Properties Within Nested Anonymous Functions

    - by Aric
    I'm just taking a look at CoffeeScript for the first time so bare with me if this is a dumb question. I'm familiar with the hidden pattern methodology however I'm still wrapping my head around object prototypes. I'm trying to create a basic class for controlling a section on my site. The problem I'm running into is losing defined class variables within a different scope. For example, the code below works fine and creates the properties within the object perfectly. However when I jump into a jQuery callback I lose all knowledge of the class variables storing some of the jQuery objects for multiple uses. Is there a way to grab them from within the callback function? class Session initBinds: -> @loginForm.bind 'ajax:success', (data, status, xhr) -> console.log("processed") return @loginForm.bind 'ajax:before', (xhr, settings) -> console.log @loader // need access to Session.loader return return init: -> @loginForm = $("form#login-form") @loader = $("img#login-loader") this.initBinds() return

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  • Weak References and Disposable objects.

    - by Steve Sheldon
    In C# it is possible to create weak references to objects as described here: WeakReference Class In .net some classes also implement the IDisposable interface. Calling the Dispose method of this interface is performed to manually dispose of any managed or unmanaged resources currently being held onto. An example might be a Bitmap object or class. If I assign an object that implements IDisposable to a weak reference, will Dispose be called if the weak reference collects the object?

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  • Marshalling polymorphic objects in JAX-WS

    - by pkchukiss
    I'm creating a JAX-WS type webservice, with operations that return an object WebServiceReply. The class WebServiceReply itself contains a field of type Object. The individual operations would populate that field with a few different data-types, depending on the operation. Publishing the WSDL (I'm using Netbeans 6.7), and getting a ASP.NET application to retrieve and parse the WSDL was fine, but when I tried to call an operation, I would receive the following exception: javax.xml.ws.WebServiceException: javax.xml.bind.MarshalException - with linked exception: [javax.xml.bind.JAXBException: class [LDataObject.Patient; nor any of its super class is known to this context.] How do I mark the annotations in the DataObject.Patient class, as well as the WebServiceReply class to get it to work? I haven't been able to fine a definitive resource on marshalling based upon annotations within the target classes either, so it would be great if anybody could point me to that too. WebServiceReply.java @XmlRootElement(name="WebServiceReply") public class WebServiceReply { private Object returnedObject; private String returnedType; private String message; private String errorMessage; .......... // Getters and setters follow } DataObject.Patient.java @XmlRootElement(name="Patient") public class Patient { private int uid; private Date versionDateTime; private String name; private String identityNumber; private List<Address> addressList; private List<ContactNumber> contactNumberList; private List<Appointment> appointmentList; private List<Case> caseList; } Solution (Thanks to Gregory Mostizky for his answer) I edited the WebServiceReply class so that all the possible return objects extend from a new class ReturnValueBase, and added the annotations using @XmlSeeAlso to ReturnValueBase. JAXB worked properly after that! Nonetheless, I'm still learning about JAXB marshalling in JAX-WS, so it would be great if anyone can still post any tutorial on this. Gregory: you might want to add-on to your answer that the return objects need to sub-class from ReturnValueBase. Thanks a lot for your help! I had been going bonkers over this problem for so long!

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  • Member variable pointers to COM objects

    - by drelihan
    Hi Folks, Is there any problem with keeping member variable pointer refernces to COM objects and reussing the reference through out the class in C++. Is anybody aware of a reason why you would want to call .CreateInstance every time you wanted a to use the COM object i.e. you were getting a fresh instance each time. I cannot see any reason who you would want to do this, Thanks, (No is an acceptable answer!!!)

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  • Is JSON.stringify() reliable for serializing JSON objects?

    - by Colin
    I need to send full objects from Javascript to PHP. It seemed pretty obvious to do JSON.stringify() and then json_decode() on the PHP end, but will this allow for strings with ":" and ","? Do I need to run an escape() function on big user input strings that may cause an issue? What would that escape function be? I don't think escape works for my purposes. Are there any downsides to JSON.stringify() I need to know about? Thanks

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  • Objective C override %@ for custom objects

    - by nickcartwright
    Hey there, I'd like to override the default print function in NSLog for custom objects; For example: MyObject *myObject = [[MyObject alloc] init]; NSLog(@"This is my object: %@", myObjcet); Will print out: This is my object: <MyObject: 0x4324234> Is there a function I override in MyObject to print out a prettier description? Cheers! Nick.

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  • XStream serializable objects

    - by Jeff Storey
    I am currently using XStream to serialize some of my objects that don't implement Serializable. Is there a way to tell XStream to use Java's default serialization if the object does implement Serializable and to fall back on XML serialization if it does not? Or would I need to implement a simple layer on top of it to check? thanks, Jeff

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  • Visual objects editor

    - by Vladimir
    I am looking for a tool which will make able to edit parts of Java code visually using something like inspector and place code back. For example: Person p = new Person(); p.setName("Bill Libb"); p.setAge(25); This code should be generated from visual inspector and copied into Java IDE. This will help quickly create sample objects for testing.

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  • WPF Coordinates of intersection from two Line objects

    - by Becky Franklin
    I have two Line objects in C# WPF, and I'm trying to construct a method to work out the coordinates at which the lines intersect (if at all). After giving myself a headache reminding myself of high school maths to do this, I can't work out how to map it into programming format - anyone know how to do this? Thanks very much, Becky

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  • objects in datagridview

    - by JaSk
    Im adding objects to a datagridview ( only one kind) through a list ej. List<Material> mater = new List<Material>(); DataGridView dgvMAterial = new DataGridView(); dgvMaterial.DataSource = null; mater.Add((Material)cmbMaterial.SelectedValue); dgvMaterial.DataSource = mater; But every time I click over the datagrid I get an indexoutofrangeexeption. Can somone tell me why? thanks

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  • Searchable list of objects in Java

    - by Christian
    I want to create a large (~300,000 entries) List of self defined objects of the class Drug. Every Drug has an ID and I want to be able to search the Drugs in logarithmic time via that ID. What kind of List do I have to use? How do I declare that it should be searchable via the ID?

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  • Using Factory to get Injected objects

    - by ryudice
    Is it good practice to have a Factory method to retrieve injected objects or is it OK to just use the factory method from the DI framework? I'm using structure map, should I just use ObjectFactory.GetInstance();, or should I create factory class and inside this class call ObjectFactory.GetInstance();? because if I call ObjectFactory.GetInstance(); in my classes I would be creating coupling to the DI framework? sorry if I'm being ignorant, I'm new to this concepts. Thanks!

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  • Python: Cannot concatenate str and NoneType objects

    - by Chase Higgins
    sql = """ INSERT INTO [SCHOOLINFO] VALUES( '""" + self.accountNo + """', '""" + self.altName + """', '""" + self.address1 + """', '""" + self.address2 + """', '""" + self.city + """', '""" + self.state + """', '""" + self.zipCode + """', '""" + self.phone1 + """', '""" + self.phone2 + """', '""" + self.fax + """', '""" + self.contactName + """', '""" + self.contactEmail + """', '""" + self.prize_id + """', '""" + self.shipping + """', '""" + self.chairTempPass + """', '""" + self.studentCount + """' ) """; I have the following code and Python keeps throwing the error that it cannon concatenate strings and nonetype objects. The thing is I have verified every variable here is in fact a string and is not null. I have been stuck on this for quite some time today, and any help would be greatly appreciated.

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  • GAE Datastore: persisting referenced objects

    - by David
    Two "I'm sorries" to begin with: 1) I've looked for a solution (here, and elsewhere), and couldn't find the answer. 2) English is not my mother tongue, so I may have some typos and the sort - please ignore them. To the point: I am trying to persist Java objects to the GAE datastore. I am not sure as to how to persist object having ("non-trivial") referenced object. That is, assume I have the following. public class Father { String name; int age; Vector<Child> offsprings; //this is what I call "non-trivial" reference //ctor, getters, setters... } public class Child { String name; int age; Father father; //this is what I call "non-trivial" reference //ctor, getters, setters... } The name field is unique in each type domain, and is considered a Primary-Key. In order to persist the "trivial" (String, int) fields, all I need is to add the correct annotation. So far so good. However, I don't understand how should I persist the home-brewed (Child, Father) types referenced. Should I: Convert each such reference to hold the Primary-Key (a name String, in this example) instead of the "actual" object. So, Vector<Child> offsprings; becomes Vector<String> offspringsNames; ? If that is the case, how do I handle the object at run-time? Do I just query for the Primary-Key from Class.getName, to retrieve the refrenced objects? Convert each such reference to hold the actual Key provided to me by the Datastore upon the proper put() operation? So, Vector<Child> offsprings; becomes Vector<Key> offspringsHashKeys; ? I would very much appreciate all kinds of comments. I have read ALL the offical relevant GAE docs/example. Throughout, they always persist "trivial" references, natively supported by the Datastore (e.g. in the Guestbook example, only Strings, and Longs). Many thanks, David

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  • Small objects allocator

    - by Felics
    Hello, Has anybody used SmallObjectAllocator from Modern C++ Design by Andrei Alexandrescu in a big project? I want to implement this allocator but I need some opinions about it before using it in my project. I made some tests and it seems very fast, but the tests were made in a small test environment. I want to know how fast it is when are lots of small objects(like events, smart pointers, etc) and how much extra memory it uses.

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  • Javascript objects: get parent

    - by Dänu
    Hey Guys I got some question about nested javascript objects (is it me, google or is javascript quite poorly documented?). Now, I got the following (nested) object: obj: { subObj: { 'hello world' } }; next thing I do is to reference the subobject like this: var s = obj.subObj; now what I would like to do, is to get a reference to the object obj out of the variable s. Something like: var o = s.parent; Is this somehow possible?

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  • Python: can't pickle module objects error

    - by adum
    i'm trying to pickle a big class and getting "TypeError: can't pickle module objects". despite looking around the web, i can't exactly figure out what this means. and i'm not sure which "module object" is causing the trouble. is there a way to find the culprit? the stack trace doesn't seem to indicate anything.

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  • Comparing two objects that are the same in MbUnit

    - by Coppermill
    From MBUnit I am trying to check if the values of two objects are the same using Assert.AreSame(RawDataRow, result); However I am getting the following fail: ====================== Expected Value & Actual Value : {RawDataRow: CentreID = "CentreID1", CentreLearnerRef = "CentreLearnerRef1", ContactID = 1, DOB = 2010-05-05T00:00:00.0000000, Email = "Email1", ErrorCodes = "ErrorCodes1", ErrorDescription = "ErrorDescription1", FirstName = "FirstName1"} Remark : Both values look the same when formatted but they are distinct instances. ====================== I don't want to have to go through each property, can I do this from MbUnit

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  • Javascript expando objects

    - by xyz
    What are expando objects in javascripts? For what purpose we need this ? Any complete example will be appreciated I found 1 article here Javascript: The red-headed stepchild of web development Thanks

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