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• How Dispatcher differs from the background thread ?

  - by Ashish Ashu

  How Dispatcher concept in .NET 3.5 in WPF differs from the background thread in .NET 2.0 ? For example what will be difference between statements below: delegate.Invoke/BeginInvoke AND this.dispatcher.Invoke/BeginInvoke

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• Push Notification (duplicate?)

  - by Moshe

  I've seen other questions here about PNS, in terms of code, but how does the concept work?do I need to tell my client that they need a server? What goes in the server in terms of configuration/cron or whatever? Please explain the process. Thanks a ton. EDIT: Please explain: Do I need to purchase an SSL certificate, or does Apple issue a "client" or " app" SSL certificate for me?

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• Secure, simple php faq creating/editing scripts?

  - by Tchalvak

  I'm looking to build a simple site centered around a simple faq system in php. The faq concept is simple, but I want to have an administrative-access backend for editing and creating the entries, and securing a login seems more complex and time-consuming, so I'm looking for suggestions for code to start me off. Does anyone know of any open source php scripts or snippets that would work for administrative login to some php scripts that could be used as a simple faq system? Or both, the faq php code + web administrative access code?

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• What are all the instances of syntactic sugar in Scala?

  - by Jackson Davis

  I decided to create this question to have a single source for all things syntactic sugar in Scala. I feel these details are some of the things most frustrating to starting users and are hard to search for since most/all of them are purely symbols and are thus hard to search for without knowing the name of the concept. TODO: implicit conversions _ syntax for anonymous functions Extractors(Unapply/UnapplySeq) Other things I'm forgetting

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• Tic-Tac-Toe AI: How to Make the Tree?

  - by cam

  I'm having a huge block trying to understand "trees" while making a Tic-Tac-Toe bot. I understand the concept, but I can't figure out to implement them. Can someone show me an example of how a tree should be generated for such a case? Or a good tutorial on generating trees? I guess the hard part is generating partial trees. I know how to implement generating a whole tree, but not parts of it.

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• php- javascript

  - by arafat

  i got a sales web site each time i press "sales" button it it will open a new frame. there is a possibility for more then one frame at the same time. my problem is i want to close the frame after i click enter and home page to be updated provided all the other pending sales frames are remain open.... i tried to do so with window concept also no use so any body can geve a solution regards

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• How to implement 3D model interaction like 3D max or other game editors?

  - by Rushi

  I am developing game editor.To detect mouse hit on 3D model I am using mouse picking concept. But I want to give interactive arrows functionality like other game editor with actual arrows at the center of model in three direction. How to achieve this..?

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• Transient collections for Scala?

  - by Alexey Romanov

  Clojure has a very nice concept of transient collections. Is there a library providing those for Scala (or F#)?

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• Implode a Object List in .NET 2

  - by serhio

  I have(.NET2) an List<Object> objects. I want to "implode" (PHP concept) this array to CSV(obj1;obj2;obj3...) What is the most efficient way? StringBuilder, string.Join? NB. Each object implements a specific override of ToString()

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• Query two different Servers

  - by Felipe Fiali

  I have to query two different servers from a dynamically built query. It basically gets data from one server, treats it, and inserts it into another server. The only problem is I have to be sure it works for both situations: If both the source and destination databases are on the same server, and if they're not. I understand the concept of using Linked Servers in SQL Server, but I cannot think of a way to consider both alternatives, same server and different servers. A little help?

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• Go back to main window once secondView is loaded

  - by Ruthy

  Hi, I have a Tableview on AppDelegate That calls a SecondView (dvController) when DidSelectRowAtIndexPath using: [self.window addSubview:[dvController view]]; On SecondView I defined a button linked to IBAction that should go back to previous view. It works great but when row selected but, How could then go back to previous view if main one is AppDelegate? self.window addSubview:[?? view]]; Should be basic concept but I am quite new and unable to get the solution. Thanx :)

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• Custom Map using iPhone MapKit

  - by DHamrick

  I am attempting to use MapKit to create a custom map (similar to this concept http://mapwow.com/) using an image instead of the google maps image. This is so we can include the gps functionality and the pins functionality. I have looked in the documentation and there does not appear to be a standard way of doing it. Is there a way to do this using MapKit or has someone found a way to achieve something similar?

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• synchronize sql cennection in multithreading in c#

  - by Lalit Dhake

  I am using multi threading concept to run some process. this process uses the sql connection object to get the data from database.This object is in another class. how to synchronize the sql connection while using multithreading?

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• ASP.NET MVC, How to get the page content before render

  - by user361993

  In ASP.NET MVC, how to get the page content before render, we know in Web form app, we can override the method protected override void Render(HtmlTextWriter writer) to get the page content before render. but in MVC there are no event concept, so how we can get the page content. the purpose for that is to emphasize(wrap <strong> tag) the keywords before the page rendered. I'd appreciate for any advice. Thank you.

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• data format encoding and etc

  - by hguser

  Hi: I Suddenly found that I have no idea about the concept of data format and the encoding. For exmpale, what is the differences about the ascii/binary/base64/text-xml ? For a real case, I am working with a web service whose parameter I have to define,however one of the parameter should be ascii,another is binary and the last is netcdf. So,how to define it? ALso I wonder the ascii needed parameter can be a .txt or .dat ?

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• URL Generation Technique with PHP

  - by harigm

  I have a build a web portal based on the Cricket concept, I have build a Custom based CMS where I can upload the News for the site Once I upload the news, the URL Will be like this http://cricandcric.com/news/news.php?id=841&An-emotional-moment:-Dhoni.html But I am trying to have the above Url as follows (some thing like this) http://cricandcric.com/news/An-emotional-moment:-Dhoni.html Or similar to Stackoverflow.com, Can any one please help me how can i build that? Do I need to rewrite the URL ?

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• Local variabeles in java

  - by Mandar

  Hello , I went through local variables and class variables concept. But I had stuck at a doubt " Why is it so that we cannot declare local variables as static " ? For e.g Suppose we have a play( ) function : void play( ) { static int i=5; System.out.println(i); } It gives me error in eclipse : Illegal modifier for parameter i; Thanks.

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• What is your "favorite" anti pattern?

  - by Omar Kooheji

  By favorite I mean the one that gets your goat the most, not the one you enjoy using the most. I'm fairly new to the concept of anti patterns and I'd like a list of do not do's. An explanation of why it's an antipattern and what problems it causes would be good too.

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• What is the best way to bind PhoneGap events (like backbutton) to views in ember.js

  - by Fedor

  I'm playing with PhoneGap and emberjs (trying to build "proof of concept" mobile/HTML5 application based on ember.js). Ember.js itself works fine, but I haven't found any good way to "bind" PhoneGap events to views. For instance, I would like to handle backbutton event and remove a view on it. It would be nice to define behavior in view class and call document.addEventListener when instance of the view is appended and call document.removeEventListener when view instance removed.

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• Built-in precedence in Expression Trees for math?

  - by jdk

  I'm unable to find the .NET FCL built-in concept of precedence to leverage while constructing Expression Trees. Ref System.Linq.Expressions Namespace. Is this something that must be handled manually in code, or is it somehow implicit and I'm not recognizing it (e.g. maybe through helper methods or classes)? I want to apply it to math operations to ensure 3 + 5 * 10 results in 53 instead of 80.

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• How to implement translation & rotation widgets for game level editor.

  - by Rushi

  I am developing game editor.To detect mouse hit on 3D model I am using mouse picking concept. But I want to implement translation & rotation widgets like other game editor with actual arrows at the center of model in three direction. How to achieve this..?

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• What is the meaning of ": base" in the constructor definition ?

  - by DotNetBeginner

  What is the meaning of ": base" in the costructor of following class(MyClass) ? Please explain the concept behind constructor definition given below for class MyClass. public class MyClass: WorkerThread { public MyClass(object data): base(data) { // some code } } public abstract class WorkerThread { private object ThreadData; private Thread thisThread; public WorkerThread(object data) { this.ThreadData = data; } public WorkerThread() { ThreadData = null; } }

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• How do you explain orthogonality to a non-technical person?

  - by DR

  In The Pragmatic Programmer this term is introduced and "linearly independency" is used as an example for orthogonality. How do you explain the same thing to a non-technical person and why independency is a good thing to have? Are there "real-life" (i.e. non-geek) examples for this concept?

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• Unit testing in python?

  - by yossi.ittach

  Hey - I'm new to python , and I'm having a hard time grasping the concept of Unit testing in python. I'm coming from Java - so unit testing makes sense because - well , there you actually have a unit - A Class. But a Python class is not necessarily the same as a Java class , and the way I use Python - as a scripting language - is more functional then OOP - So what do you "unit test" in Python ? A flow? Thanks!

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• Facebook graph api resources!

  - by kielie

  Hi guys, I am creating a little flash game for the facebook platform, but I am finding it very difficult to get any decent documentation on the graph api, so if anyone has a decent resource for a beginner to go and learn the basics, I would appreciate it very much, as I am struggling to grasp the concept. Thanx!

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