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• Blackberry,php webservice

  - by kashif-pucitian

  Hi, i am new to blackberry and webservices concept. My client side code will be on Blackberry and server cide code will be on php. 1) i want to send simple string "hello world" from blackberry mobile (client side code) to php page (server side code) which will display me "hello world". 2) then i will retreive that "hello world" from php page (server side code) and display it on my blackberry application (client side code). Pleease give me source code help of this so by following that example i will implement complex web services.

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• How to reduce java concurrent mode failure and excessive gc

  - by jimx

  In Java, the concurrent mode failure means that the concurrent collector failed to free up enough memory space form tenured and permanent gen and has to give up and let the full stop-the-world gc kicks in. The end result could be very expensive. I understand this concept but never had a good comprehensive understanding of A) what could cause a concurrent mode failure and B) what's the solution?. This sort of unclearness leads me to write/debug code without much of hints in mind and often has to shop around those performance flags from Foo to Bar without particular reasons, just have to try. I'd like to learn from developers here how your experience is. If you had previous encountered such performance issue, what was the cause and how you addressed it? If you have coding recommendations, please don't be too general. Thanks!

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• Decorator for determining HTTP response from a view

  - by polera

  I want to create a decorator that will allow me to return a raw or "string" representation of a view if a GET parameter "raw" equals "1". The concept works, but I'm stuck on how to pass context to my renderer. Here's what I have so far: from django.shortcuts import render_to_response from django.http import HttpResponse from django.template.loader import render_to_string def raw_response(template): def wrap(view): def response(request,*args,**kwargs): if request.method == "GET": try: if request.GET['raw'] == "1": render = HttpResponse(render_to_string(template,{}),content_type="text/plain") return render except Exception: render = render_to_response(template,{}) return render return response return wrap Currently, the {} is there just as a place holder. Ultimately, I'd like to be able to pass a dict like this: @raw_response('my_template_name.html') def view_name(request): render({"x":42}) Any assistance is appreciated.

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• Asp .Net MVC Viewmodel should be class or struct?

  - by Jonas Everest

  Hey guys, I have just been thinking about the concept of view model object we create in asp.net MVC. Our purpose is to instantiate it and pass it from controller to view and view read it and display the data. Those view model are usually instantiated through constructor. We won't need to initialize the members, we may not need to redefine/override parameterless constructor and we don't need inheritance feature there. So, why don't we use struct type for our view model instead of class. It will enhance the performance.

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• Determining Long Tap (Long Press, Tap Hold) on Android with jQuery

  - by Volomike

  I've been able to successfully play with the touchstart, touchmove, and touchend events on Android using jQuery and an HTML page. Now I'm trying to see what the trick is to determine a long tap event, where one taps and holds for 3 seconds. I can't seem to figure this out yet. I'm wanting to this purely in jQuery without Sencha Touch, JQTouch, jQMobile, etc. I like the concept of jQTouch, although it doesn't provide me a whole lot and some of my code breaks with it. With Sencha Touch, I'm not a fan of moving away from jQuery into Ext.js and some new way of doing Javascript abstraction, especially when jQuery is so capable. So, I want to figure this out with jQuery alone. I've been able to do many jQTouch and Sencha Touch things on my own using jQuery. And jQMobile is still too beta and not directed enough to the Android yet.

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• Memory Allocation - Arduino

  - by Joey Arnold Andres

  I'm new to this low level stuff. I'm currently learning arduino. I'm currently using an Arduino Mega 2560 and in our course we are practicing memory management. I'm a pro at memory management in pc but somehow I'm having crazy problems here in arduino. For instance: The arduino have 8192B, I'm trying to overflow it with uint_16 so I made an array of 8192/16 which is 512. so I did uint16_t A[512+1]; Well I expected that to cause an overflow. What is wrong with my concept?

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• What is the best way to migrate documents into Sharepoint (MOSS) 2007?

  - by Jeramie Mercker

  I'm working with a customer that needs to migrate documents from their current document management system (not Sharepoint) into Sharepoint MOSS 2007 retaining document history and metadata. I've written a proof of concept using the Sharepoint web services and that looks promising, but the snag so far seems to be programmatically setting the created date/time and user. The webservices allow the fields to be set but implicitly override them to be the currently logged in user + date/time. For obvious reasons, I need to be able to keep the original created date/time and user on migration. Does anyone know the best way to approach this problem?

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• Google Maps or Open Street or Something Else

  - by clifgray

  I have been working on a concept for a while for a sports related website where users can record a location on a map and put that location into a category for a sport and then rate it by a metric or two. I want these metrics displayed on the map but then I want a link or button to view a full page description. I know that this is possible with Google Maps but I don't know a lot about Open Street Maps or other options. I am expecting around 50,000 views a day and am curious as to what the best option would be.

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• Sorting data by relevance, from multiple tables

  - by Oden

  Hey, How is it possible to sort data from multiple tables by relevance? My table structure is following: I have 3 tables in my database, one table contains the name of solar systems, the second for e.g. of planets. There is one more table, witch is a connection between solar systems and planets. If I want to get data of a planet, witch is in the Milky Way, i post this data to the server, and it gives me a multi-dimensional array witch contains: The Milky Way, with every planet in it Every planet, witch name contains the string Milky Way (maybe thats a bat example because i don't think that theres but one planet with this name, but the main concept is on file) But, i want to set the most relevant restaurants to the top of the array. (for the relevance i would check the description of the restaurants or something like that) So, how would you do that kind of data sorting?

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• UI Design Choices and How to Implement Them

  - by AKRamkumar

  I am making an application that is a dashboard/widget host. I am using MEF to load the plugins and I have a ui Concept Idea like this: http://i42.tinypic.com/scb6nd.png Is this a good design choice? How would I implement the Navigation? Is there any Design Patter you would reccomend for this? Note: My contract interface is this. public interface IDashboardPlugin { public string Name{get;} public string Description{get;} public string Author{get;} public UIElement UI{get;} }

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• C++ -- typedef "inside" template arguments?

  - by redmoskito

  Imagine I have a template function like this: template<Iterator> void myfunc(Iterator a, Iterator::value_type b) { ... } Is there a way to declare a typedef for Iterator::valuetype that I can use in the function signature? For example: template< typename Iterator, typedef Iterator::value_type type> void myfunc(Iterator a, type b) { ... } Thus far, I've resorted to using default template arguments and Boost concept checking to ensure the default is always used: template< typename Iterator, typename type = Iterator::value_type > void myfunc(Iterator a, type b) { BOOST_STATIC_ASSERT(( boost::type_traits::is_same< typename Iterator::value_type, type >::value )); ... } ...but it would be nice if there was support in the language for this type of thing.

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• Undetermined type conversion in VB.NET 2008

  - by user337501

  I figured this would be a quick google, but extensive searching hasnt yielded any results. Everything about type conversion seems to dance around this concept. I want to get the type of variable "a", and make a new variable named "b" of that type. Otherwise I could have "a" as a type already declared and "b" simply as an Object, then try to cast "b" to the type of "a". Dim a As Integer Dim b As Whatever a Is OR TryCast(b, Whatever a Is) I would also like to make the conversion using a variable representation of the type, but cant find info on how to do that either. Sorta like: Dim a As Integer Dim b As Object Dim t As Type t = a.GetType() TryCast(b, t) Realizing I'm completely misusing TryCast here, I'm mostly trying to get my goal across. I figured it would be an easy quick thing to do but I cant really find any specific info on it. Any ideas?

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• Suggestions: Anti-Pattern counter-examples

  - by Tom W

  It doesn't seem that this exact question has been asked before, so I'll fire away: Most of us are familiar with the concept of an anti-pattern. However, avoiding implementation of anti-patterns can in principle swing too far the other way and cause problems itself. As an example, "Design by Committee" has a counter-example that I'd call "Design by Maverick" - wherein the design of an important feature is handed off to an individual to do what they think best, with the intention of reviewing their work later and deciding whether it should be finalised or go through another iteration. This takes much longer in practice as the rest of the team are occupied by other things, and can end up with a feature that's useful to nobody, particularly if the Maverick is not themselves an experienced end-user. Does anyone have any more examples of anti-pattern counter-examples?

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• MVC (model-view-controller) - can it be explained in simple terms?

  - by DVK

  I need to explain to a not-very-technical manager the MVC (model-view-controller) concept and ran into trouble. The problem is that the explanation needs to be on a "your grandma will get it" level - e.g. even the fairly straightforward explanation offered on MVC Wiki page didn't work, at least with my commentary. Does anyone have a reference to a good MVC explanation in simple terms? It would ideally be done with non-techie metaphor examples (e.g. similar to "Decorator pattern is like glasses") - one reason I failed was that all MVC examples I could come up with were development related. I once saw a list of pattern explanations but to the best of my memory MVC was not on it. Thanks!

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• Perls Of Wisdom For a .Net Programmer [closed]

  - by DeanMc

  Hi Guys, I like to think that recently I have moved from complete beginner to beginner. It has been a hard road and one on which I took many wrong turns. Very rarely in any profession is there a place where so many rock stars gather, this is something I would like to take advantage of. What I would like to ask is what are your perls of wisdom for a .net programmer. They can be anything you feel of value, a concept, a book, a process that should be followed, anything of that nature, it doesn't have to be .net specific just contextual. Thanks for taking the time to read this and respond.

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• Change the ApplicationID of a running process from c#

  - by Nestor

  In Windows 7 we have the concept of ApplicationID, which allows (among other things) to group several icons in the task bar. How can I change the ApplicationID of a running process from c#? I'm trying to make my WinForm app's icon group with another application. I've tried using Windows API Code Pack Library, sticking the following code in my Load event... but it didn't work. Suggestions? TaskbarManager.Instance.ApplicationId = "MyAppID"; Process[] p = Process.GetProcessesByName("OtherProcess"); TaskbarManager.Instance.SetApplicationIdForSpecificWindow(p[0].MainWindowHandle, "MyAppID");

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• Express any number as the sum of 4 prime numbers [Doubts]

  - by WarDoGG

  I was give a problem to express any number as sum of 4 prime numbers. Conditions: Not allowed to use any kind of database. Maximum execution time : 3 seconds Numbers only till 100,000 If the splitting is NOT possible, then return -1 What i did : using the sieve of eratosthenes, i calculated all prime numbers till the specified number. looked up a concept called goldbach conjecture which expresses an even number as the summation of 2 primes. However, i am stuck beyond that. Can anyone help me on this one as to what approach u might take ? The sieve of eratosthenes is taking 2 seconds to count primes till 100,000 :(((

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• How to customize an OpenFileDialog using nested types?

  - by vitorbal

  Say I wanted to customize an OpenFileDialog and change, for example, the way the filter for file extensions work, as in the case of this question. After I pointed out to the author of said question that the OpenFileDialog is not inheritable, I got a comment with the following: Even though the OpenFileDialog is sealed (not inheritable), you may use it as a nested type. For instance, using a property that will get the NativeDialog. Then, you write your method always using the NativeDialog property and you're done. My question is, can someone provide me with an example code on how would I proceed on doing something like that? I'm kind of new to the concept of nested types so I'm having a hard time figuring that out by myself, and I searched around the web and couldn't find anything too concrete about it. Thanks!

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• Allow for modular development while still running in same JVM?

  - by Marcus

  Our current app runs in a single JVM. We are now splitting up the app into separate logical services where each service runs in its own JVM. The split is being done to allow a single service to be modified and deployed without impacting the entire system. This reduces the need to QA the entire system - just need to QA the interaction with the service being changed. For inter service communication we use a combination of REST, an MQ system bus, and database views. What I don't like about this: REST means we have to marshal data to/from XML DB views couple the systems together which defeats the whole concept of separate services MQ / system bus is added complexity There is inevitably some code duplication between services You have set up n JBoss server configurations, we have to do n number of deployments, n number of set up scripts, etc, etc. Is there a better way to structure an internal application to allow modular development and deployment while allowing the app to run in a single JVM (and achieving the associated benefits)?

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• Cakephp with OpenID and User Authentication

  - by nolandark

  I have a table "users" and I want to enable my visitors to login with their openID Account. For this I use the OpenId Component for Cakephp and it works fine (When I login with the Google URL I receive the "successfully authenticated!" notification). But now I'm kind of stuck because I don't know how to go on from there. Do I have to create a User-Entry for every user which has a new entry in the "oid_associations" table (I save all OpenId interaction in the mysql database)? Do I have to authenticate the User after the login (or is the OpenID-component doing that automatically?). Am I completely misunderstanding the concept?

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• Debugging/Running executables in cmake/Visual Studio project

  - by Paul

  We are moving from hand-managed Visual Studio projects to cross platform cmake. We used to open a solutions file, select a project as "Startup Target" and push Ctrl+F5 or F5 debug or run. Now cmake has this install concept. It requires me to run the install target. But the install project doesn't have any executables set so it can not be used to start with debugging. If I set my executable project as a startup target, then install will not run, so I can not debug. I am sure there is a better way of doing this. Any ideas ?

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• Modularity Java: top level vs. nested classes

  - by an00b

  The Java tutorials that I read, like to use nested classes to demonstrate a concept, a feature or use. This led me to initially implement a sample project I created just like that: Lots of nested classes in the main activity class. It works, but now I got a monstrous monolithic .java file. I find it somewhat inconvenient and I now intend to break to multiple .java files/classes. It occurred to me, however, that sometimes there may be reasons not to take classes out of their enclosing class. If so, what are good reasons to keep a module large, considering modularity and ease of maintenance?

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• Quick methodology to show client a working demo

  - by LordCover

  I am not starting an argumentative discussion here and this post is not about career development, but from the commercial point of view: If a company was using ASP.Net MVC as a main methodology to build their web sites and application. However, ASP.Net MVC takes more time to show a functional application than ASP.Net Web Forms, for example, building domain models would take some time which obviously can't be represented on a UI at that current stage. My question is, if a client wants to see a functional demo application (just a proof of concept) so he knows that the company he is dealing with is professional and capable of doing that. Would it be better to do that demo in ASP.Net Web Forms only to show the client, and then work on the real application using ASP.Net MVC? If not, what are the (quick) alternatives?, I mean, if we tell the client to wait till we have a working demo (by ASP.Net MVC) we may lose the client and the whole project opportunity.

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• can QuickGraph support these requirements? (includes database persistence support)

  - by Greg

  Hi, Would QuickGraph be able to help me out with my requirements below? (a) want to model a graph of nodes and directional relationships between nodes - for example to model web pages/files linked under a URL, or modeling IT infrastructure and dependencies between hardware/software. The library would include methods such as * Node.GetDirectParents() //i.e. there could be more than one direct parent for a node * Node.GetRootParents() //i.e. traverse the tree to the top root parent(s) for the given node * Node.GetDirectChildren() * Node.GetAllChildren() (b) have to persist the data to a database - so it should support SQL Server and ideally SQLite as well. If it does support these requirement then I'd love to hear: any pointers to any parts of QuickGraph to dig into? what is the best concept re it's usage in terms of how to use database persistence - is it a simpler design to assume every search/method works directly on the database, or does QuickGraph support smarts to be able to work in memory and the "save" to database all changes at an appropriate point in time (e.g. like ADO.net does with DataTable etc) Thanks in advance

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• How to allow for modular development while still running in same JVM?

  - by Marcus

  Our current app runs in a single JVM. We are now splitting up the app into separate logical services where each service runs in its own JVM. The split is being done to allow a single service to be modified and deployed without impacting the entire system. This reduces the need to QA the entire system - just need to QA the interaction with the service being changed. For interservice communication we use a combination of REST, an MQ system bus, and database views. What I don't like about this: REST means we have to marshal data to/from XML DB views couple the systems together which defeats the whole concept of separate services MQ / system bus is added complexity There is inevitably some code duplication between services You have set up n JBoss server configurations, we have to do n number of deployments, n number of set up scripts, etc, etc. Is there a better way to structure an internal application to allow modular development and deployment while allowing the app to run in a single JVM (and achieving the associated benefits)?

  Read the article

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