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  • Reflection: different ways to retrieve property value

    - by jules
    I'm retrieving an IEnumerable list of properties via following code: BindingFlags bindingFlag = BindingFlags.Instance | BindingFlags.Public; var dataProperties = typeof(myParentObject).GetProperties(bindingFlag); Then I'm iterating through the list and retrieving the value for each property. I've come across two different approaches to doing this, and just wondered what the difference is between them: 1) object propertyValue = property.GetGetMethod().Invoke(myObject, null); 2) object propertValue = property.GetValue(myObject, null)

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  • Is there any sql interpreter for objects?

    - by Behrooz
    Is there any interpreter that takes a string or even a custom object as input and execute it on my datasource? I cannot use linq to object because query always changes and the report i'm working on, has about 6000 queries which i can reduce to 9 if i find some tool doing that for me. Opensource is very applicable. thanks in advance.

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  • One-line expression to map dictionary to another

    - by No Such IP
    I have dictionary like d = {'user_id':1, 'user':'user1', 'group_id':3, 'group_name':'ordinary users'} and "mapping" dictionary like: m = {'user_id':'uid', 'group_id':'gid', 'group_name':'group'} All i want to "replace" keys in first dictionary with keys from second (e.g. replace 'user_id' with 'uid', etc.) I know that keys are immutable and i know how to do it with 'if/else' statement. But maybe there is way to do it in one line expression?

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  • Why doesn't HashTable.Contains() just simply return false if it is passed a null?

    - by Nate Pinchot
    I understand why passing a null to HashTable.Contains() doesn't work, but I don't understand what the point of it throwing an ArgumentNullException is - instead of just simply returning false? What is the benefit of throwing the exception (other than to make me do null checks before calling .Contains())? Caused By [System.ArgumentNullException] Key cannot be null. Parameter name: key at System.Collections.Hashtable.ContainsKey(Object key) at System.Collections.Hashtable.Contains(Object key)

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  • Objective C - Parse NSData

    - by EZFrag
    I have the following data inside an NSData object: <00000000 6f2d840e 31504159 2e535953 2e444446 3031a51b 8801015f 2d02656e 9f110101 bf0c0cc5 0affff3f 00000003 ffff03 I'm having issues parsing this data. This data contains information which is marked by tags Tag 1 is from byte value 0x84 to 0xa5 Tag 2 is from byte value 0xa5 to 0x88 Tag 3 is from byte value 0x88 to 0x5f0x2d Tag 4 is from byte value 0x5f0x2d to 0x9f0x11 How would I go about to get those values from the NSData object? Regards, EZFrag

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  • Pop Up to enter credentials

    - by user320969
    When I open my SharePoint site collection everytime I am getting the pop up to enter the credential. How I can get rid off this. I checked in the alternate access mapping but I couldnt figure out anything difference,as the internal URL and external URL s are same. Can anyone help me regarding this??

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  • Git: submodule init and update from different folder

    - by jmccartie
    Trying to write a deployment script, working on a repo in a different path. The "git-dir" flag seems to work fine for most commands, but not for submodule work. Am I missing a path directive? Works: git --git-dir=/tmp/repo_path/.git log Doesn't work: git --git-dir=/tmp/repo_path/.git submodule init Error: No submodule mapping found in .gitmodules for path 'path_to/submodule' Much thanks for any help.

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  • C# - Does foreach() iterate by reference?

    - by sharkin
    Consider this: List<MyClass> obj_list = get_the_list(); foreach( MyClass obj in obj_list ) { obj.property = 42; } Is 'obj' a reference to the corresponding object within the list so that when I change the property the change will persist in the object instance once constructed somewhere?

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  • Generate sample XML from composite hierarchical structure

    - by Jevgenij Nekrasov
    Let's say I have composite hierarchical structure. Each object in the structure has child collection of the same objects. Each object has XPath property, which stores the exact xpath to the element inside XML file. Right now I am trying to create an extension, which can generate XML string from that hierarchical structure, but first I want to make some sort of research what is the most efficient way to do that? ant what is the easiest way?

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  • jquery ui popup a YouTube Video modally

    - by BahaiResearch.com
    Is there a way to use jQueryUI to popup a YouTube video modally? Here's the YouTube code I have: <object width="480" height="385"><param name="movie" value="http://www.youtube.com/v/DIuXtsaUDmM?fs=1&amp;hl=en_US"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/DIuXtsaUDmM?fs=1&amp;hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object>

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  • When should I implement IDisposeable?

    - by Bobby
    What is the best practice for when to implement IDisposeable? Is the best rule of thumb to implement it if you have one managed object in the class, or does it depend if the object was created in the class or just passed in? Should I also do it for classes with no managed objects at all?

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  • Cannot use ternary operator in LINQ query

    - by Nissan Fan
    I can't figure out why I get a Object reference not set to an instance of an object. error if I use a ternary operator in my LINQ query. var courses = from d in somesource orderby d.SourceName, d.SourceType select new { ID = d.InternalCode, Name = string.Format("{0} - {1}{2}", d.InternalCode, d.SourceName, (d.SourceType.Length > 0 ? ", " + d.SourceType : string.Empty)) }; Any thoughts?

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  • Java Container constraints question

    - by llm
    I am using the following: java.awt.Container.add(Component comp, Object constraints) How do I specificy the constraints object? I need to be able to place a component within the container. Oh and my class extends JInternalFrame if this helps... I need to specify coordinates to place the component within the container

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  • programming in lua, objects

    - by anon
    Sample code: function Account:new (o) o = o or {} -- create object if user does not provide one setmetatable(o, self) self.__index = self return o end taken from: http://www.lua.org/pil/16.1.html What is the purpose of the: self.__index = self line? And why is it executed every time an object is created?

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  • Are methods also serialized along with the data members in C#?

    - by Shaza
    Hey all, The title is obvious, I need to know if methods are serialized along with object instances in C#, I know that they don't in Java but I'm a little new to C#. If they don't, do I have to put the original class with the byte stream(serialized object) in one package when sending it to another PC? Can the original class be like a DLL file?

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  • Euler rotation of direction vector

    - by Tom Savage
    I have defined an object in 3D space with position, rotation and scale values (all defined as 3D vectors). It also has upwards and forwards direction vectors. When I rotate the object, I need these direction vectors to rotate with it. Assuming my up vector is (0, 1, 0) and my forwards vector is (0, 0, 1) at zero rotation, how might I achieve this?

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  • Error exposing event througt interface

    - by carlos
    I have this interface Interface IProDataSource Delegate Sub DstartingHandler(ByVal sender As Object, ByVal e As EventArgs) Event starting_Sinc As DstartingHandler End Interface Trying to use the intarce like this Public Class DataSource : Implements IProDataSource Public Event starting_Sinc As DstartingHandler Implements IProDataSource.starting_Sinc Public Delegate Sub DstartingHandler(ByVal sender As Object, ByVal e As EventArgs) End Class Gives me the next error Event 'starting_Sinc' cannot implement event 'starting_Sinc' on interface 'IProDataSource' because their delegate types 'DstartingHandler' and 'IProDataSource.DstartingHandler' do not match.

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  • Is there a straightforward way to have a thread-local instance variable?

    - by Dan Tao
    With the ThreadStatic attribute I can have a static member of a class with one instance of the object per thread. This is really handy for achieving thread safety using types of objects that don't guarantee thread-safe instance methods (e.g., System.Random). It only works for static members, though. Is there any straightforward way to declare a class member as thread-local, meaning, each class instance gets an object per thread?

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  • Destructors in C++

    - by user265260
    does the Destructor deallocate memory assigned to the object which it belongs to or is it just called so that it can perform some last minute housekeeping before the object os deallocated by the compiler?

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  • Google App Engine - The most awaited feature

    - by systempuntoout
    This list is taken from the official Google App Engine roadmap: SSL for third-party domains Background servers capable of running for longer than 30s Ability to reserve instances to reduce application loading overhead Ability to select different availability vs. latency options for Datastore Support for mapping operations across datasets Datastore dump and restore facility Raise request/response size limits for some APIs Improved monitoring and alerting of application serving Support for Browser Push (Comet) communication Built-in support for OAuth & OpenID What is your most awaited feature and why?

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