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• Need to identify the component's selectedItem

  - by theband

  I am creating a lot of dynamic flex components like RadioButton, Combo Box, CheckBox. if(type=="mx.controls.CheckBox"){ //if(rep.currentIndex<5){ for each(j in x){ k=createNewInstanceOfClass(rep.currentItem.type); k.id="radioGroup"+rep.currentItem; k.label=j.linkname; k.data=j.linkname; linkPanel[rep.currentIndex].addChild(DisplayObject(k)); } When i click on Submit finally i need to get all the selected Values in each question. All the components are dynamically created at runtime.

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• Installing Ruby on Rails in Fresh Ubuntu 10.10 System

  - by Benedict Aluan

  There are a lot of tutorials on how to install Ruby on Rails in Ubuntu 10.10. But even following the steps, there are still errors and dependencies that will encountered in order to successfully install RoR. The system varies on the developer's setup. To make it uniform, installation must be on a fresh Ubuntu 10.10 system. Is there a step-by-step guide on how to install RoR on a Fresh Ubuntu 10.10 machine? Like the first thing I need to do after starting the terminal.

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• How do I make this ASP.NET MVC controller more testable?

  - by Ragesh

  I have a controller that overrides OnActionExecuting and does something like this: protected override void OnActionExecuting(ActionExecutingContext filterContext) { base.OnActionExecuting(filterContext); string tenantDomain = filterContext.RouteData.Values["tenantDomain"] as string; if (!string.IsNullOrWhiteSpace(tenantDomain)) { using (var tx = BeginTransaction()) { this.Tenant = repo.FindOne(t => t.Domain == tenantDomain); } } } Tenant is a protected property with a private setter. The class itself is an abstract base controller that my real controllers derive from. I have code in other controllers that looks a lot like this: if (Tenant == null) { // Do something } else { // Do something else } How do I test this code? What I need to do is to somehow set the Tenant property, but I can't because: It's a protected property, and It has a private setter Changing the visibility of Tenant doesn't "feel" right. What are my alternatives to unit test my derived controllers?

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• Getting a ReturnValue from cmd.Parameters in c#?

  - by mark smith

  Hi, I have just finished converted a vb.net app to c# and one of the lines is to get @ReturnValue from the parameter. I ended up having to CAST a lot of things.. Is there not a easier way here is what i have int rc = ((System.Data.SqlTypes.SqlInt32)(((System.Data.SqlClient.SqlParameter)(cmd.Parameters["@ReturnValue"])).SqlValue)).Value; In vb.net it was as simple as doing this Dim rc As Integer = Convert.ToInt32(cmd.Parameters("@ReturnValue").Value) Alot easier :-) But the problem with C# is the property Value isn't available unless I Cast to SqlParameter and i also need to cast to Sqltypes.SqlInt32 - i can't just do a standard Convert.ToInt32

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• based map follow layer wms tiled

  - by user32263

  hye all, im new in openlayer, just want to ask, i want to develop one system i already get layer from geoserver using wms services; this is the code: var hilirPerak = new OpenLayers.Layer.WMS("hilirPerak", "http://localhost:8080/geoserver/hilirPerak/wms", { workspace: 'hilirPerak', layers: 'hilirPerak:lot', styles:'', format: 'image/png', tiled: true, transitionEffect: 'resize', units: 'degrees' }, { maxResolution: 1000, singleTile: false, ratio:1, isBaseLayer:false, tilesOrigin : map.maxExtent.left + ',' + map.maxExtent.bottom, buffer: 0, visibility:true, maxExtent: OpenLayers.Bounds.fromString("3.873635,4.074956,101.14974"), //ratio: 1.9, //buffer: 0, //displayOutsideMaxExtent: true, //isBaseLayer: true, yx : {'EPSG:4326' : true}, displayOutsideMaxExtent: true, transparent:true } ); its show on system, for based map im using google, but the problem is, when i tick check layer, the based map follow size layer. if the layer point at certain place, based map follow layer bounds. please help me.. Thank you

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• Can pydoc/help hide the documentation for inherited class methods and attributes?

  - by EOL

  When declaring a class that inherits from a specific class: class C(dict): added_attribute = 0 the documentation for C lists all the methods of dict (either through help(C) or pydoc). Is there a way to hide the inherited methods from the automatically generated documentation (the documentation string can refer to the base class, for non-overwritten methods)? This would be useful: pydoc lists the functions defined in a module after its classes. Thus, when the classes have a very long documentation, a lot of less than useful information is printed before the new functions provided by the module are presented, which makes the documentation harder to exploit (you have to skip all the documentation for the inherited methods until you reach something specific to the module being documented).

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• Self-Configuring Classes W/ Command Line Args: Pattern or Anti-Pattern?

  - by dsimcha

  I've got a program where a lot of classes have really complicated configuration requirements. I've adopted the pattern of decentralizing the configuration and allowing each class to take and parse the command line/configuration file arguments in its c'tor and do whatever it needs with them. (These are very coarse-grained classes that are only instantiated a few times, so there is absolutely no performance issue here.) This avoids having to do shotgun surgery to plumb new options I add through all the levels they need to be passed through. It also avoids having to specify each configuration option in multiple places (where it's parsed and where it's used). What are some advantages/disadvantages of this style of programming? It seems to reduce separation of concerns in that every class is now doing configuration stuff, and to make programs less self-documenting because what parameters a class takes becomes less explicit. OTOH, it seems to increase encapsulation in that it makes each class more self-contained because no other part of the program needs to know exactly what configuration parameters a class might need.

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• Stupid Facebook Connect question about customizing the share-button

  - by Geuis

  I really hate asking about anything retarded as Facebook Connect on SO, but their own development forums are horrendous. We're implementing a Facebook share button using this: <fb:share-button class="url" href="http://oursite.com/"></fb:shared-button> This is documented(poorly) here: http://wiki.developers.facebook.com/index.php/Fb:share-button I need to be able to change the text from "Share" to something else. I've spent 2 hours looking for an answer to this and have come up short. Thanks a lot for any help, and sorry for asking about something this retarded.

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• Database Abstraction & Factory Methods

  - by pws5068

  I'm interested in learning more about design practices in PHP for Database Abstraction & Factory methods. For background, my site is a common-interest social networking community currently in beta mode. Currently, I've started moving my old code for object retrieval to factory methods. However, I do feel like I'm limiting myself by keeping a lot of SQL table names and structure separated in each function/method. Questions: Is there a reason to use PEAR (or similar) if I dont anticipate switching databases? Can PEAR interface with the MySqli prepared statements I currently use? Will it help me separate table names from each method? (If no, what other design patterns might I want to research?) Will it slow down my site once I have a significantly large member base?

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• Writing a post search algorithm.

  - by MdaG

  I'm trying to write a free text search algorithm for finding specific posts on a wall (similar kind of wall as Facebook uses). A user is suppose to be able to write some words in a search field and get hits on posts that contain the words; with the best match on top and then other posts in decreasing order according to match score. I'm using the edit distance (Levenshtein) "e(x, y) = e" to calculate the score for each post when compared to the query word "x" and post word "y" according to: score(x, y) = 2^(2 - e)(1 - min(e, |x|) / |x|) Each word in a post contributes to the total score for that specific post. This approach seems to work well when the posts are of roughly the same size, but sometime certain large posts manages to rack up score solely on having a lot of words in them while in practice not being relevant to the query. Am I approaching this problem in the wrong way or is there some way to normalize the score that I haven't thought of?

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• Modifying reference member from const member function in C++

  - by Philipp

  I am working on const-correctness of my code and just wondered why this code compiles: class X { int x; int& y; public: X(int& _y):y(_y) { } void f(int& newY) const { //x = 3; would not work, that's fine y = newY; //does compile. Why? } }; int main(int argc, char **argv) { int i1=0, i2=0; X myX(i1); myX.f(i2); ... } As far as I understand, f() is changing the object myX, although it says to be const. How can I ensure my compiler complains when I do assign to y? (Visual C++ 2008) Thank a lot!

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• MVC without ORM is not real MVC?

  - by ajsie

  at the moment im integrating ORM (doctrine) into a MVC framework (codeigniter). then it hit me that this was the obvious way of setting up a MVC: the controller calls the models that are representing database tables. look at this picture: MVC + ORM then i wondered, how can a MVC without ORM be real MVC? cause then the models are not real objects, rather aggregations of different functions that perform CRUD, then returning the result to the controller. and there is no need for a state (object properties) i guess so the functions would be all static? correct me if im wrong on this one. i guess a lot of people are using models without ORM. please share your thoughts. how do your models look like?

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• How to save value of an element selected by the array style in jQuery ?

  - by Devyn

  Let's say we have following this: <p class="first">This is paragraph 1.</p> <p class="second">This is paragraph 2.</p> <p id="third">This is paragraph 3.</p> <p>This is paragraph 4.</p> We can save the value of an element in value variable and show like this. var value = $('p').slice(3,4); value.text(); // result --> This is paragraph 4 Above way has no problem if we know the number of element but we'll get problem if we have a lot of elements and we want to do with looping. why I get error if I do like this? $('p')[3].text(); What should I do if I want to loop and get values?

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• Why is passing a string literal into a char* arguament only sometimes a compiler error?

  - by Brian Postow

  I'm working in a C, and C++ program. We used to be compiling without the make-strings-writable option. But that was getting a bunch of warnings, so I turned it off. Then I got a whole bunch of errors of the form "Cannot convert const char* to char* in argmuent 3 of function foo". So, I went through and made a whole lot of changes to fix those. However, today, the program CRASHED because the literal "" was getting passed into a function that was expecting a char*, and was setting the 0th character to 0. It wasn't doing anything bad, just trying to edit a constant, and crashing. My question is, why wasn't that a compiler error? In case it matters, this was on a mac compiled with gcc-4.0.

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• Using a general class for execution with try/catch/finally?

  - by antirysm

  I find myself having a lot of this in different methods in my code: try { runABunchOfMethods(); } catch (Exception ex) { logger.Log(ex); } What about creating this: public static class Executor { private static ILogger logger; public delegate void ExecuteThis(); static Executor() { // logger = ...GetLoggerFromIoC(); } public static void Execute(ExecuteThis executeThis) { try { executeThis(); } catch (Exception ex) { logger.Log(ex); } } } And just using it like this: private void RunSomething() { Method1(someClassVar); Method2(someOtherClassVar); } ... Executor.Execute(RunSomething); Are there any downsides to this approach? (You could add Executor-methods and delegates when you want a finally and use generics for the type of Exeception you want to catch...)

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• is PHP itself transforming into a framework?

  - by Elzo Valugi

  At the beginning PHP was a scripting language. But after the introduction and improvement of OOP I see more and more objects added to the core. They started with SPL which grew a lot, now we have DOMDocument family, DateTime family which should be part of PECL, Pear or Zend Framework or implemented by each one of us. Shouldn't be php only for build-in functions and all these objects passed to something else? Example. DateTime class is part of the core and I see it very similar with Zend_Date.

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• jquery hover menu question

  - by vondip

  Hi all, I am developing a small web app that uses jquery quite a lot. In my app a user can hover an image, which becomes bigger after a few seconds, giving him more details. The problem is that when the image enlarges the image, it takes over the area of the nearby images as well. Now, if the user goes over the second red square (numbered as 2) I would like the currently enlarged image to disappear and instead enlarge the image pictured below as square two. I am not much of a painter, but I have attached a small image to help illustrate the problem. In short, How can I tell jquery to detect when the mouse is over red square number two, yet not raising the event if the mouse is over green square. [in my demo picture, hovering on point]

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• How does py2exe actually -and simply explained- work? :)

  - by sandra

  Hi folks, I have a c++ app that calls another python one (bundled into an exe with py2exe) So I have 2 apps. So I was wondering: What if my c++ did what py2exe does? i.e. embed the python app in the c++ one. This way I won't depend on py2exe and its configurations nighmares (yes, it has some) Hence my questions: how does py2exe work (so I can do its job with my c++ app) What about just embedding the whole python app with the c++? I read the python doc about embedding, did an example (a very simple one that does PyRun_SimpleString) but what about a whole python app with tons of modules? (zipimport maybe?) I'd love to hear how you'd do that. Thanks a lot! :)

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• How to transfer control from javscript to asp page from javascript

  - by junaid ahmed

  I am very new to .net. I searched and googled a lot but couldn't find the solution for my issue. I have a asp .net application, In my login page i only have user id field. When the user submits the button, i need to have a transitional asp page (page which user doesn't see but runs in background) which will run some javascript and transfer the control to either page a or page b based on some condition. How do i achieve this? How do i call a controller action from javscript in mvc architecture in .net

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• when i merge a data table with a typed dataset, one single field on a single row is DBNull sometimes

  - by benj007

  Hi everybody, I have a strange problem sometimes when I try to merge a data table with a typed dataset my data table is filled in with a stored procedure and when I checked the content of this table it is ok, everything is in there straight after I merge it with my core typed dataset like this : MyTypedDataSet.TheTable.Clear(); MyTypedDataSet.TheTable.Merge(MyDataTable); and now if i check the table in the dataset everything is ok except only one single field on one single row which is DBNull, that makes no sense because the source data table contains the good integer vaue. Thanks a lot in advance guys :)

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• drupal: so many js and css files ?

  - by Patrick

  hi, I've realized I'm loading a lot of resources (24 css and 17 js files) using Drupal. I've several modules installed and they all come with a css and js file. For my website I'm only using 1 additional js plugin (all the other 16 come with Drupal modules). I've not installed useless modules. They are all necessary, and they require js such as swfobject, ajax_views, jquery.media, spamspan, lightbox (modal, video and default js files), etc Same thing with css files: ckeditor, filefield, lightbox, tagadelic, uploadfield, fieldgroup, vews, taxonomy_super_select, html-element, tabs, messages... etc For my website, I only use my theme css zen.css of course. So.. is this normal ? Or I should remove all this stuff? Are drupal websites normally heavy ? thanks

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• Some good websites to learn about JavaScript and programming architecture?

  - by Jack Roscoe

  I'm not sure if 'architecture' is the correct term, but I've been looking for some articles online which talk about programming design and more about how best to use languages such as JavaScript in a code design sense rather than the actual syntax itself. I have found many websites but a lot seem to be very out dated, and I'm not sure what developments have taken place with JavaScript over the years so do not know how old is too old. If anybody could suggest some great websites, or maybe specific articles you think would be useful, that would be highly appreciated. I am a beginner programmer currently using JavaScript with XML and of course HTML & CSS, and I'm currently trying to get further into and learn more about web development.

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• GlassFish JDO and global object

  - by bach

  Hi, I'm thinking about the GlassFish platform for my new app. My app env. doesn't have a big volume of data to handle, but a lot of users writing/reading the same data A very volotile portion of the data updates every 200milsec by diff users. Therefore I'd like that type of data to be in memory only and accessible to the whole app My questions: How do I use a global object in memory with GF? a. use a static variable object - for that I guess I need to make sure GF is running on only 1 JVM -- how to I configure GF to run on 1 jvm? b. use HttpContext - same as a. How do I persist to the DB? a. can I use JDO interface? How do I Schedule tasks to be performed in the future (something like the task queue in GAE) thanks, J.S. Bach

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• Pass logger instance to class

  - by mridang

  Hi Guys, I'm using a open-source Python library in my project. This library logs a lot of information using the logging class. ...but I can't see the output or log it to file. I know that i would have to create a logger instance and add a file-handler or a console-handler to it but how can i pass this logger instance to the class? Here's the init snippet of the class that I'm going to be using. class Periscope: ''' Main Periscope class''' def __init__(self): self.config = ConfigParser.SafeConfigParser({"lang": "en"}) if is_local: self.config_file = os.path.join(bd.xdg_config_home, "periscope", "config") if not os.path.exists(self.config_file): folder = os.path.dirname(self.config_file) if not os.path.exists(folder): logging.info("Creating folder %s" %folder) os.mkdir(folder) logging.info("Creating config file") configfile = open(self.config_file, "w") self.config.write(configfile) configfile.close() else: #Load it self.config.read(self.config_file) self.pluginNames = self.listExistingPlugins() self._preferedLanguages = None Any help? Thanks guys.

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• Idiomatic approach for structuring Clojure source code

  - by mikera

  I'm interested in how people structure their Clojure source code. Being used to Java, I'm pretty familiar with the paradigm of one class per source code file, bundling all the data and method definitions with appropriate comments and annotations etc. However Clojure offers a lot more flexibility, and I'm not sure how I should structure my project (likely to end up as a medium sized app, maybe 5,000 lines with three or four distinct subsystems) In particular I'm wrestling with: What guidelines should I use to determine whether code should be in a single namespace vs. separated out into different namespaces? Should each protocol/datatype have it's own namespace + source file with associated set of functions? When should I require vs. use other namespaces?

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