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• Any way to determine which object called a method? [Ruby]

  - by Joe

  I'm hoping that Ruby's message-passing infrastructure means there's some clever trick for this... How do I determine the calling object -- which object called the method I'm currently in?

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• How do I get access to object being described?

  - by Bill T

  If I have an example such as the following: describe "A flux capacitor" do it "should flux a lot" do # how can I access the string object "A flux capacitor" in here??? ... end end How can I access the described string object "A flux capacitor"? I've tried a few permutations of 'described_type' and 'described_class' Such as: self.described_type.to_s But these always return nothing. What am I doing wrong? Thanks, -Bill

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• What is more correct class name or object name in UML sequence diagram?

  - by atch

  I was just wondering if it is more correctly to as a label of objects in UML sequence diagram instead of object name (which is irrelevant in my opinion and less informative than class name) provide class name. Another thing, while returning information instead of listing all objects names would it be a better solution to just write collection; Diagram with object names: Diagram with class names: As it's clearly visible from the second diagram that it is much more informative than the first one, and I think it is more practical.

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• iPhone SQLite connection in domain object - close each time?

  - by BahaiResearch.com

  I have what I would consider a small sized iPhone app that uses SQLite. There is a singleton domain object which gets data from a SQLite database. Is it better to create and open the SQLite connection for each request, or to open the DB once and hold on to it for the duration of the app. The app's reason for being is the domain object so other objects will not need the DB.

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• How to efficiently count the number of keys/properties of an object in JavaScript?

  - by mjs

  What's the fastest way to count the number of keys/properties of an object? It it possible to do this without iterating over the object? i.e. without doing var count = 0; for (k in myobj) if (myobj.hasOwnProperty(k)) count++; Firefox provides a magic __count__ property, but this isn't available in other implementations.

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• Are support for Object.hasOwnProperty and Function.call reliably mutual?

  - by kennebec

  Can anyone tell me if there are any clients (browsers) that define a functioning Object.prototype.hasOwnProperty that do NOT define a Function.prototype.call? That is, must I use belt and suspenders to qualify clients for a certain level of scripting, or will hasOwnProperty do for both? if(Object.hasOwnProperty && Function.call){ // add script } Is support for either of these properties a reliable subset of support for the other?

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• How do I reflect over the members of dynamic object?

  - by Flatliner DOA

  I need to get a dictionary of properties and their values from an object declared with the dynamic keyword in .NET 4? It seems using reflection for this will not work. Example: dynamic s = new ExpandoObject(); s.Path = "/Home"; s.Name = "Home"; // How do I enumerate the Path and Name properties and get their values? IDictionary<string, object> propertyValues = ???

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• Where is the VB.Net debugger "Make Object ID" function?

  - by Josh

  When using the visual studio 2008 debugger with c# i can right-click on a variable and choose "Make Object ID" which allows me to watch that object (via it's ID) regardless of whether it is in the current stack frame or not. When the debugger is in VB code, (doesnt matter if it's run from a c# unit test or a vb unit test) That option isn't there. Where did VB put this feature? Or does it simply not support it like so many other helpful c# features?

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• Can you transport a Javascript object to server and receive it in the same state?

  - by zorglub76

  I'm considering creating a simple remote debugging application for Javascript. Actually, I want to provide an object to Firebug Lite and let it do all the job. So, can I get an object from one page, serialize it, send it to server and then to another browser and finally see the same results in Firebug Lite (on that other client) as I would see on the first browser (with doing "console.dir(obj)")? Is it possible to do?

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• How do I set up a proxy object in the main application NIB?

  - by zoul

  Hello! I would like to set up a proxy object in the application NIB file. The problem is that the NIB file is the main application NIB that gets loaded automatically by the application and therefore I cannot set up the UINibProxiedObjectsKey dictionary as described in the documentation. Is there a way to set up a proxy object in the main application NIB? Or can I tap into the code that loads the main application NIB?

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• How do I get the current Cmdlet from another object?

  - by John Vottero

  What's the best way to get the current PowerShell Cmdlet from another object? If I create a helper object that is not a Cmdlet but will be called by Cmdlets, the helper methods may want to call WriteVerbose, WriteDebug etc. What's the best way to get access to that? Is there a static PowerShell method that will return the current Cmdlet or do I need to have the Cmdlet pass itself to the helper?

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• How to delete every reference of an object in Python?

  - by Juanjo Conti

  Supose you have something like: x = "something" b = x l = [b] How can you delete the object only having one reference, say x? del x won't do the trick; the object is still reachable from b, for example.

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• Are there any concerns I should have about storing a Python Lock object in a Beaker session?

  - by Jack

  There is a certain page on my website where I want to prevent the same user from visiting it twice in a row. To prevent this, I plan to create a Lock object (from Python's threading library). However, I would need to store that across sessions. Is there anything I should watch out for when trying to store a Lock object in a session (specifically a Beaker session)?

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• Flash object wont load inside the application but loads in separated file.

  - by Taverneiro

  I have a Flash object that loads fine in a static sample HTML but doesnt inside the application. I saw something interesting in firebug. When the page loads the object is loaded two times. In the first one I get a Partial Response status but the content-type of the package is right. In the second time the whole package is transfered but the content-type is wrong! I am using apache 2.2.14.

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• Can I use Linq-to-xml to persist my object state without having to use/know Xpath & XSD Syntax?

  - by Greg

  Hi, Can I use Linq-to-xml to persist my object state without having to use/know Xpath & XSD Syntax? ie. really looking for simple but flexible way to persist a graph of object data (e.g. have say 2 or 3 classes with associations) - if Linq-to-xml were as simple as saying "persist this graph to XML", and then you could also query it via Linq, or load it into memory again/change/then re-save to the xml file.

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• What is a reverse reference to the DOM object?

  - by chadley

  In this link: http://css-tricks.com/snippets/jquery/jquery-plugin-template/ it has a line of code that says // Add a reverse reference to the DOM object base.$el.data("yourPluginName", base); what does the "reverse reference to the DOM object" mean?

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• How can an object not be compared to null?

  - by ProfK

  I have an 'optional' parameter on a method that is a KeyValuePair. I wanted an overload that passes null to the core method for this parameter, but in the core method, when I want to check if the KeyValuePair is null, I get the following error: Operator '!=' cannot be applied to operands of type System.Collections.Generic.KeyValuePair<string,object>' and '<null>. How can I not be allowed to check if an object is null?

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• C#, how to create an XML document from an object?

  - by JL

  I have the following variable that accepts a file name: var xtr = new XmlTextReader(xmlFileName) { WhitespaceHandling = WhitespaceHandling.None }; var xd = new XmlDocument(); xd.Load(xtr); I would like to change it so that I can pass in an object. I don't want to have to serialize the object to file first. Is this possible?

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• How can I return a Future object with Spring without writing concurrency logic?

  - by Johan

  How can I return a java.util.concurrent.Future object with a Receipt object and only use the @javax.ejb.Asynchronous annotation? And do I need any extra configuration to let Spring handle ejb annotations? I don't want to write any concurrency logic myself. Here's my attempt that doesn't work: @Asynchronous public Future<Receipt> execute(Job job) { Receipt receipt = timeConsumingWork(job); return receipt; }

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• How do I create a duplicate instance of object contained in a shared pointer in c++?

  - by user367848

  I have an object which has both a copy constructor and assignment operator defined. It is enclosed inside a shared pointer. I want to make another shared pointer that contains a copy of the original shared pointer (i.e. new shared pointer to a new memory location, which however, has the same data as the original object). Thanks for any assistance.

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• How to remove a single, specific object from a ConcurrentBag<>?

  - by routeNpingme

  With the new ConcurrentBag<T> in .NET 4, how do you remove a certain, specific object from it when only TryTake() and TryPeek() are available? I'm thinking of using TryTake() and then just adding the resulting object back into the list if I don't want to remove it, but I feel like I might be missing something. Is this the correct way?

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• How to assign a value of a property to a var ONLY if the object isn't null

  - by Blankman

  In my code, is there a shorthand that I can use to assign a variable the value of a object's property ONLY if the object isn't null? string username = SomeUserObject.Username; // fails if null I know I can do a check like if(SomeUserObject != null) but I think I saw a shorthand for this kind of test. I tried: string username = SomeUserObject ?? "" : SomeUserObject.Username; But that doesn't work.

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• What is simpliest C# function to parse Json String into object?

  - by Ole Jak

  What is simpliest C# function to parse Json String into object and display it (C# xaml WPF)? (for example object wit 2 arrays - arrA and arrB)

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• Binding the IsSelected property of ListBoxItem to a property on the object from it's source.

  - by BrandonS

  I have a WPF ListBox control and I'm setting it's "ItemsSource" to a collection of item objects. How can I bind the "IsSelected" property of the ListBoxItem to a "Selected" property of a corresponding item object without having an instance of the object to set as a binding.Source?

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• Best way to manage JSON object via GET and POST in php.

  - by Kucebe

  My site does some short ajax call in JSON format, using jQuery. At client-side i'd like to send object just passing it in ajax function, without being forced to wrap it in an object literal like this: {'JSON_Obj' : myJSON_Obj }. For the same reasons, at server-side i'd like to manage objects without the binding of $_GET['JSON_Obj'] or $_POST['JSON_Obj']. For example, using file_get_contents("php://input"), i can manage POST requests in that way, but in GET format it doesn't work. Any suggestions?

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