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• Three20 - add items to launcherView after viewDidLoad

  - by lostInTransit

  Hi I am getting a list of image URLs and corresponding names at run time in my app. I would like to add these images to a TTLauncherView object that I have. Cannot add these in loadView. I am making a call to the method for getting my data in a separate thread. Once the thread completes, I add the TTLauncherItem objects to an array and set the "pages" variable of the LauncherView. But for some reason, the view is not updated and I don't see anything on it. Can someone please let me know how to refresh the launcherview after adding items to it in methods other than loadView? Thanks.

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• objective c id *

  - by joels

  I am using the KVO validations in my cocoa app. I have a method - (BOOL)validateName:(id *)ioValue error:(NSError **)outError My controls can now have their bindings validate. How do I invoke that method with a id * NOT id To use the value that is passed in (a pointer to a string pointer) I call this: NSString * newName = (NSString *)*ioValue; if ([newName length] < 4) { otherwise i get bad exec crashes... passing in with type casting doesnt work: (id *)myStringVar passing in with a regular id doesnt work either : (id) myStringVar

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• django media url is not resolved in 500 internal server error template

  - by Tom Tom

  Hi, I'm using a 500.html template for my app, which is an identical copy of the 404.html with some minor text changes. Interestingly the {{ media_url }} context variable will not be resolved by the server if the 500.html is presented (e.g. when I force an internal server error), resulting in a page without any css loaded. An easy way to circumvent this would be to hardcode the links to the css, but I m just curious why the media_url is not resolved. Probably it is because the server encounters a internal server error and that leads to context variables not any more available!?

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• PHP Doctrine: Filter Table?

  - by ropstah

  I'm still not convinced after my previous question and some experience. Requirements: I don't want to use an SQL query everytime a filterBy() function is called and still be able to call -filterBy() on the returned table. Please find the comment @ ObjectsTable class: "How to instantiate another table and add records which match the filter criteria?" Usage: $globaltable = new ObjectsTable(); //globally accessible variable $globaltable->findAll(); //this call is made once at the beginning of the request $globaltable->filterBy('somefield', $someValue); //this function is used all over the place ObjectsTable class: class ObjectsTable extends Doctrine_Table { function filterBy($field, $value) { //How to instantiate another table and add records which match the criteria? } }

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• Read vector into CUDA shared memory

  - by Ben

  I am new to CUDA and programming GPUs. I need each thread in my block to use a vector of length ndim. So I thought I might do something like this: extern __shared__ float* smem[]; ... if (threadIddx.x == 0) { for (int d=0; d<ndim; ++d) { smem[d] = vector[d]; } } __syncthreads(); ... This works fine. However, I seems wasteful that a single thread should do all loading, so I changed the code to if (threadIdx.x < ndim) { smem[threadIdx.x] = vector[threadIdx.x]; } __syncthreads(); which does not work. Why? It gives different results than the above code even when ndim << blockDim.x.

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• Custom Display Form with Custom Workflow button

  - by Ifi

  I have created a new custom list form that will show 4 fields on the page from a Custom List called "Shipment". I have added Form Action button that I would like to run a custom action that is set inside of a Workflow. Currently, the form displays the fields for "Manifest Number", "Pickup Location", "Delivery Location", & "Scheduled Pickup Time". When the user clicks the Form Action button, what I want the Workflow to do is go to the ID field of the displayed content in the Form and change the value of the "Picked Up" column from No to Yes. The problem I am having is passing the ID of the displayed information from the Form to the Workflow as a variable. I can get the "Picked Up" column to update if I specify the value in the "Update List Item" window under the "Find the List Item" section, but I cannot figure out how to do this dynamically from the Form

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• Creating an URL without global variables

  - by dygi

  I have a code like this below, which gives me a $link that equals to: http://mydomain.com/image/photo.JPG if (!empty($_SESSION['item'][$i])) { $path = dirname(__FILE__).'/image/'.basename($_SESSION['item'][$i]); if (move_uploaded_file($_SESSION['item'][$i], $path)) global $url; if ( $url ) { $link = $url.'/image/'.basename($_SESSION['item'][$i]); echo "<td><img src='" . $link . "' width='50' height='50' /></td>"; } } I wonder, how should I properly ommit using global variable here to achieve the same result.

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• Using attribute text value in AngularJS directive

  - by C1pher

  Using a YouTube tutorial created by John Lindquist, I was able to create a directive using a template. See fiddle: http://jsfiddle.net/37PSs/ Now, I want to use the value of the attribute as a variable to a function call. Something like this: html: <hello-world name="World"></hello-world> javascript - directive: template: '<span>myFunction({{name}})</span>' javascript - myFunction(theirName): return ("Hello, " + String(theirName) + "!"); The closest I've been able to get is passing an [object Window] to my function.

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• Reading Stacktrace in Objective-C?

  - by yar

  I don't like real-time debugging much, but if it's necessary I'll do it. Is there any way to figure out what line of code a StackTrace in Objective-C refers to? What about the variable it refers to? For instance: 2010-05-13 19:39:11.673 Thingers[21003:207] *** -[NSCFString count]: unrecognized selector sent to instance 0x3b0ebb0 2010-05-13 19:39:11.674 Thingers[21003:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFString count]: unrecognized selector sent to instance 0x3b0ebb0' 2010-05-13 19:39:11.675 Thingers[21003:207] Stack: ( 29303899 ... 11130 ) I see that we're talking about sending a count message to something that doesn't have it (maybe it's a NSCFString?), but is there any way to figure out what a/the named reference to that instance (0x3b0ebb0) refers to?

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• How Can I Check an Object to See its Type and Return A Casted Object

  - by Russ Bradberry

  I have method to which I pass an object. In this method I check it's type and depending on the type I do something with it and return a Long. I have tried every which way I can think of to do this and I always get several compiler errors telling me it expects a certain object but gets another. Can someone please explain to me what I am doing wrong and guide me in the right direction? What I have tried thus far is below: override def getInteger(obj:Object) = { if (obj.isInstanceOf[Object]) null else if (obj.isInstanceOf[Number]) (obj:Number).longValue() else if (obj.isInstanceOf[Boolean]) if (obj:Boolean) 1 else 0 else if (obj.isInstanceOf[String]) if ((obj:String).length == 0 | (obj:String) == "null") null else try { Long.parse(obj:String) } catch { case e: Exception => throw new ValueConverterException("value \"" + obj.toString() + "\" of type " + obj.getClass().getName() + " is not convertible to Long") } }

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• Using Parallel Extensions with ThreadStatic attribute. Could it leak memory?

  - by the-locster

  I'm using Parallel Extensions fairly heavily and I've just now encountered a case where using thread locla storrage might be sensible to allow re-use of objects by worker threads. As such I was lookign at the ThreadStatic attribute which marks a static field/variable as having a unique value per thread. It seems to me that it would be unwise to use PE with the ThreadStatic attribute without any guarantee of thread re-use by PE. That is, if threads are created and destroyed to some degree would the variables (and thus objects they point to) remain in thread local storage for some indeterminate amount of time, thus causing a memory leak? Or perhaps the thread storage is tied to the threads and disposed of when the threads are disposed? But then you still potentially have threads in a pool that are longed lived and that accumulate thread local storage from various pieces of code the threads are used for. Is there a better approach to obtaining thread local storage with PE? Thankyou.

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• ng-grid get filtered column count after filtering

  - by Ryan Langton

  I'm using ng-grid with filtering. Any time the filter updates I want to get the filtered item count. I have been able to do this using the filteredRows property of ngGrid. However I'm getting the rows BEFORE the filtering occurs and I want them AFTER the filtering occurs. Here is a plunker to demonstrate the behavior: http://plnkr.co/edit/onyE9e?p=preview Here is the code where filtering is occuring: $scope.$watch('gridOptions.filterOptions.filterText2', function(searchText, oldsearchText) { if (searchText !== oldsearchText) { $scope.gridOptions.filterOptions.filterText = "name:" + searchText + "; "; $scope.recordCount = $scope.gridOptions.ngGrid.filteredRows.length; } });

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• Sorting List which has object that contains two string members that contains numbers

  - by Lemo

  I want to know the best solution for this my case here is that i am taking values from Excel sheet and pushing them to database field, sometimes that field might contain some strings (thats why I cant make my object members int / double) In my class below size is the variable responsible for showing size of files in bytes public class dataNameValue { public string Name { get; set; } public string Count { get; set; } public string Size { get; set; } } I wanted to sort the list by file Size something like List mylist = new List(); mylist = mylist.OrderByDescending(i = i.Size).ToList(); The problem is that if i sorted it without converting it to "int/double" first -- its not giving right results

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• Resuming File Downloads in Ruby on Rails

  - by jaycode

  Hi, this has been asked here: http://stackoverflow.com/questions/1840413/resuming-file-downloads-in-ruby-on-rails-range-header-support But there was no answer. I am having similar problem, could anybody help, please? Thanks before. Alright I am getting close. Seems like I need to setup header Content-Length or Content-Range, as described here: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13. Haven't got an idea how. Anybody knows? Jay response.header["Content-Range"] = "20000-#{size}" send_file "#{Dir.pwd}/products/filename.zip", :type => 'application/zip', :size => (size - 20000) doesn't work

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• Age verification forms and crawlers

  - by user333763

  I have created a website about some beer brand and had to include age verification page. The verification script is written in PHP and uses sessions to store verification variable. The script works the way that no matter form which link you will try to enter the website it will take you to the verification page first. The verification is very simple. There are 2 button: "I'm under 21" and "I'm over 21". If you click the latter, you can browse the website. After some time I discovered that the web crawlers are not able to get past verification page. I checked the website in Google webmaster tools and the only text content scanned was from the verification page. I read somewhere that crawlers are not able to submit form buttons, is it true? Considering the fact that age verification pages are useless anyways, maybe I should just leave it as a starting page but don't forbid going around it, e.g. from links to the subpages?

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• Why is my NSMutableArray returning nill?

  - by lampShade

  I have a very simple task: add the contents of a textField to an NSMutableArray.The Problem is the array is returning nill. I believe that it has something to do with the fact that the array I'm using is declared as an instance variable. /* IBOutlet NSTextField *textField; IBOutlet NSTabView *tableView; IBOutlet NSButton *button; NSMutableArray *myArray; */ #import "AppController.h" @implementation AppController -(IBAction)addNewItem:(id)sender { NSString *string = [textField stringValue]; NSLog(@"%@",string); [myArray addObject:string]; NSLog(@"%d",[myArray count]);//this outputs 0 why is that? }

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• Vim: Call an ex command (set) from function?

  - by sixtyfootersdude

  Drawing a blank on this, and google was not helpful. Want to make a function like this: function JakPaste() let tmp = :set paste? if tmp == "paste" set nopaste else set paste endif endfunction map <F2> :call JakPaste()<CR> However this does not work. I have isolated the broken line: function JakPaste() let tmp = set paste? endfunction map <F2> :call JakPaste()<CR> Pressing F2 results in this error: Error detected while processing function JakPaste: line 1: E121: Undefined variable: set E15: Invalid expression: set paste? Hit ENTER or type command to continue How should I call an ex command (set) from a vim function? This seems somewhat relevant however I still don't get it.

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• How to demonstrate java multithreading visibility problems?

  - by Joe23

  If variables in Java are accessed from multiple threads, one must ensure that they are safely published. This usually means using synchronizedor volatile. I have got the impression, that some of my colleagues do not take this issue seriously, since they "never heard of volatile before and their programs have worked for years". So my question is: Can someone provide an example Java program/snippet, that reliably shows data visibility problems. I think running a program and seeing the unexpected NPE or stale variable value would help more, than just theoretic explanations, that cannot be demonstrated. Thanks a lot for your help!

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• JavaScript: jQuery Datepicker - simple highlighting of specific days, who can help? (source inside)

  - by Klicker.eu

  Hi guys, i want to use the Datepicker for highlighting specific dates. Here is my latest code: <script type="text/javascript"> var dates = [30/04/2010, 01/05/2010]; $(function(){ $('#datepicker').datepicker({ numberOfMonths: [2,3], dateFormat: 'dd/mm/yy', beforeShowDay: highlightDays }); function highlightDays(date) { for (var i = 0; i < dates.length; i++) { if (dates[i] == date) { return [true, 'highlight']; } } return [true, '']; } }); </script> my CSS is: #highlight, .highlight { background-color: #cccccc; } Well the calendar comes up, but there is nothing highlighted. Where is the problem in my code? If anyone could help that would be great. Another option/solution could be: disable all dates, but make available only dates in an array. Thanks!

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• Unit test with Authlogic on Rails 3

  - by Puru puru rin..

  Hello, I would like to write some unit test with a logged user using Authlogic. To start right, I used some code hosted in http://github.com/binarylogic/authlogic_example. But I get an error after rake test, because of "test_helper.rb" and the following class: class ActionController::TestCase setup :activate_authlogic end Here is my error: NameError: undefined local variable or method `activate_authlogic' for I think this Authlogic example is mapped over Rails 2; maybe it's a little bit different on Rails 3. Is there an other example where I can take example about unit test? Many thanks.

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• How do I check if a user is authenticated with NickServ using POE::Component::IRC::State in Perl?

  - by Troy

  I'm trying to test whether a user is registered on FreeNode. nick_info() doesn't seem to return information about this, so I want to use $irc-yield(whois = $nick); and then grab the irc_whois event's reply. The problem is that I want to wait until this event is fired, so I created a global variable $whois_result and wrote a sub like this: sub whois { my $nick = $_[0]; $whois_result = 0; $irc->yield(whois => $nick); while($whois_result == 0) { } return $whois_result; } with the irc_whois handler looking like: sub on_whois { $whois_result = $_[ARG0]; print "DEBUG: irc_whois fired.\n"; } Unfortunately, the event can't fire while the loop is running so this hangs. I'm sure there's a better way to do this, but I'm not familiar enough with this kind of programming to know. Any help would be greatly appreciated.

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• check for naming convention in java.

  - by Vivart

  through java reflection how to check that method name is in camelCase? e.g. import java.lang.reflect.*; public class TestClass { private int simpleMethod( Object p, int x) throws NullPointerException { if (p == null) throw new NullPointerException(); return x; } public static void main(String args[]) { try { Class cls = Class.forName("method1"); Method methlist[] = cls.getDeclaredMethods(); for (int i = 0; i < methlist.length; i++) { Method m = methlist[i]; System.out.println("name= " + m.getName()); } } catch (Throwable e) { System.err.println(e); } } } here i am getting method names simpleMethod and main i have to check that these names are in camelCase.

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• Trying to drop all tables from my schema with no rows?

  - by Vineet

  I am trying to drop all tables in schema with no rows,but when i am executing this code i am getting an error THis is the code: create or replace procedure tester IS v_count NUMBER; CURSOR emp_cur IS select table_name from user_tables; BEGIN FOR emp_rec_cur IN emp_cur LOOP EXECUTE IMMEDIATE 'select count(*) from '|| emp_rec_cur.table_name INTO v_count ; IF v_count =0 THEN EXECUTE IMMEDIATE 'DROP TABLE '|| emp_rec_cur.table_name; END IF; END LOOP; END tester; ERROR at line 1: ORA-29913: error in executing ODCIEXTTABLEOPEN callout ORA-29400: data cartridge error KUP-00554: error encountered while parsing access parameters KUP-01005: syntax error: found "identifier": expecting one of: "badfile, byteordermark, characterset, data, delimited, discardfile, exit, fields, fixed, load, logfile, nodiscardfile, nobadfile, nologfile, date_cache, processing, readsize, string, skip, variable" KUP-01008: the bad identifier was: DELIMETED KUP-01007: at line 1 column 9 ORA-06512: at "SYS.ORACLE_LOADER", line 14 ORA-06512: at line 1 ORA-06512: at "SCOTT.TESTER", line 9 ORA-06512: at line 1

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• R: ggplot2, how to add a number of layers to a plot at once to reduce code

  - by John

  library(ggplot2) This code produces a nice looking plot: qplot(cty, hwy, data = mpg, colour = displ) + scale_y_log2() + labs(x="x axis") + labs(y="y axis") + opts(title = "my title") But I want to setup variables to try and to reduce code repetition: log_scale <- scale_y_log2() xscale <- labs(x="x axis") yscale <- labs(y="y axis") title <- opts(title = "my title") my_scales <- c(log_scale, xscale, yscale, title) # make a variable to hold the scale info changes above So that I can do this and add a bunch of things at the same time: qplot(cty, hwy, data = mpg, colour = displ) + my_scales # add these to your plot. but I get this error: Error in object$class : $ operator is invalid for atomic vectors I realize that the things going into my_scales need to be layers / different types of objects, but I don't see what they should be.

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• Limited IList<> implementation ?

  - by Wam

  Hello people, I'm doing some work with stats, and want to refactor the following method : public static blah(float[] array) { //Do something over array, sum it for example. } However, instead of using float[] I'd like to be using some kind of indexed enumerable (to use dynamic loading from disk for very large arrays for example). I had created a simple interface, and wanted to use it. public interface IArray<T> : IEnumerable<T> { T this[int j] { get; set; } int Length { get; } } My problem is : float[] only inherits IList, not IArray, and AFAIK there's no way to change that. I'd like to ditch IArray and only use IList, but my classes would need to implement many methods like Add, RemoveAt although they are fixed size And then my question : how can float[] implement IList whereas it doesn't have these methods ? Any help is welcome. Cheers

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