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  • Android ListAdapter Repaint

    - by xger86x
    Hi, i have the following problem. I fill a ListView with a custom ArrayAdapter with data from a BD. However, in background, i'm updating those datas from the info provided by an API, so the idea is when the update finish, the adapter shows the updated data instead its "old version". The problem is that when i do that, i notice a lag while the adapter is updating itself. Is the any efficient solution to avoid this? Thanks

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  • Lightweight JMS broker

    - by nixau
    Hi, I'm looking for a small and yet efficient enough lightweight JMS broker solution with no or minimum of dependencies. My messaging code should be running in the environment with a lot of dependencies I have no control of. Thus it would make ridiculous to deploy say ActiveMQ solution along with my custom bunch of classes. Thanks for your time.

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  • how to move a postgres schema via file operations ?

    - by Jerome WAGNER
    Hello, I have a schema schema1 in a postgres database A. I want to have a duplicate of this schema (model + data) in database B under the name schema2. What are my options ? I currently : * dump schema1 from database A * sed my way through schema renaming in the dump : schema1 becomes schema2 * restore schema2 in database B but I am looking for a more efficient procedure. For instance, via direct file operations on postgres binary files. Thanks for your help Jerome Wagner

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  • Combining List<>'s in .NET

    - by Maxim Z.
    I have a few List< objects that hold many objects of one specific type. My goal is to combine these List<'s into one List<. Of course, I could just loop through each List's contents and add them into one final List, but is there a more efficient way?

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  • dictionary interface for large data sets

    - by Richard
    I have a set of key/values (all text) that is too large to load in memory at once. I would like to interact with this data via a Python dictionary-like interface. Does such a module already exist? Reading key values should be efficient and values compressed on disk to save space.

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  • Generating tuples for tuples

    - by Nicola Bonelli
    Say you have a tuple and want to generate a new tuple by applying a metafunction on each type of the first one. What' the most efficient C++ metafuntion to accomplish to this task? Is it also possible to use C++0x variadic template to provide a better implementation?

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  • .NET Geometry Library

    - by dewald
    Does anyone know of a good (efficient, nice API, etc.) geometry open source library for .NET? Some of the operations needed: Data Structures Vectors (2D and 3D with floats and doubles) Lines (2D and 3D) Rectangles / Squares / Cubes / Boxes Spheres / Circles N-Sided Polygon Matrices (floats and doubles) Algorithms Intersection calculations Area / Volume calculations

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  • Where do you go to tickle your brain (to get programming challenges)?

    - by Prakash
    I am sure we all have some place to go to get our brain teased! Sometimes i visit Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems Where do you all go?

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  • Doctrine2 update both sides of association

    - by orourkedd
    I'm using this to update both sides of an association but want to know if there is a more efficient way to do this. In this case, it is a self-referencing OneToMany parent/child association: public function setParent(Node $parent, $inverse = true) { $this->parent = $parent; if($inverse) $parent->addChild($this, false); } public function addChild(Node $child, $inverse = true) { if(!$this->children->contains($child)) { $this->children[] = $child; if($inverse) $child->setParent($this, false); } }

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  • Remove identical files in UNIX

    - by Thrawn
    Hi all, I'm dealing with a large amount (30,000) files of about 10MB in size. Some of them (I estimate 2%) are actually duplicated, and I need to keep only a copy for every duplicated pair (or triplet). Would you suggest me an efficient way to do that? I'm working on unix. Thank you :-)

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  • YAML, JSON, or XML to store items in a document database

    - by Zubair
    I am creating a document database and I have to decide on a structure for the records which will be represented as strings. The database has to be able to be read from and written to using as many languages as possible using stable libraries in an efficient way. What are the relavant issues I have to consider, and what would you suggest is the ideal format?

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  • Run length encoding

    - by Phoenix
    What is the best we can do with run length encoding. http://en.wikipedia.org/wiki/Run-length_encoding Page suggests the time complexity is O(m*n) where m is the number of time the number repeats .. Is the a more efficient algorithm to do RLE ??

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  • NSMutableArray Vs Stack

    - by Chandan Shetty SP
    I am developing 2D game for iphone in Objectice-C.In this project I need to use stack, I can do it using STL(Standard template library) stacks or NSMutableArray, since this stack is widely used in the game which one is more efficient? @interface CarElement : NSObject { std::stack<myElement*> *mBats; } or @interface CarElement : NSObject { NSMutableArray *mBats; } Thanks,

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  • ASP.NET MVC BaseController to dynamically set MasterPage file

    - by rockinthesixstring
    I've built a Base Controller that all of my Controllers inherit from, and I've got it setup so that it checks the browser type and returns the appropriate MasterPageFile on the fly. I'm wondering if this is an efficient way to do this or if I should optimize it another way. Public Class BaseController : Inherits System.Web.Mvc.Controller Protected Overrides Function View(ByVal viewName As String, ByVal masterName As String, ByVal model As Object) As System.Web.Mvc.ViewResult If Request.Browser.IsMobileDevice Then Return MyBase.View(viewName, "Mobile", model) Else Return MyBase.View(viewName, "Site", model) End If End Function End Class

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  • Python Sets vs Lists

    - by mvid
    In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python list?

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  • How can I sort timestamps in perl ?

    - by ablimit
    I have several thousand objects with string property in the format of "yyyy-MM-ddTHH:mm:ssZ". I want to sort these objects ordered by time. Is there any useful packages or scripts for this ? (currently I'm just comparing individual numeric values and it seems it's not very efficient and neat)

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  • Embedding more text into the mail body in SMTP Gmail sender

    - by Rahul Varma
    Hi folks, I am using Gmail sender function defined here to send a mail to the predefined mail id. But my problem is that i want to embed more text into the body of my mail... The Gmail sender is only accepting one sting to be embedded into the body of the mail. Can anyone tell me how to embed more strings into the body of the mail... If Gmail sender is not efficient method to send a mail then please suggest me an alternative with an example....

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  • Generating tuples from tuples

    - by Nicola Bonelli
    Say you have a tuple and want to generate a new tuple by applying a metafunction on each type of the first one. What' the most efficient C++ metafuntion to accomplish to this task? Is it also possible to use C++0x variadic template to provide a better implementation?

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  • How can we detect hotkeys registered by other apps?

    - by worlds-apart89
    Is it possible to detect all the hotkeys registered by the OS as well as software applications currently running? Any native or managed approach on the Windows platform? I know that the RegisterHotKey function returns false if the hotkey is already registered, but what I am looking for is an approach, method, etc. that will give me a list of registered hotkeys. Looping all possible combinations with RegisterHotKey does not sound like a good idea. Anything more efficient?

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  • Finding a string inside an XmlDocument

    - by Gady
    Hi, I need to find an inner text of an element inside an XmlDocument and return it's Xpath. for example, searching for "ThisText" inside : <xml> <xml2>ThisText</xml2> </xml> should return the Xpath of xml2 what's the most efficient way of doing this in c#?

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