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  • ObjC get property name

    - by Joe Even
    Yes. I've searched a lot without success. I've looking for a way to get a property name as StringValue from inside a method. Lets say: My class has X Subviews from the Type UILabel. @property (strong, nonatomic) UILabel *firstLabel; @property (strong, nonatomic) UILabel *secondLabel; [...] and so on. Inside the method foo, the views are iterated as followed: -(void) foo { for (UIView *view in self.subviews) { if( [view isKindOfClass:[UILabel class]] ) { /* codeblock that gets the property name. */ } } } The Result should be something like that: THE propertyName(NSString) OF view(UILabel) IS "firstLabel" I've tried class_getInstanceVariable, object_getIvar and property_getName without Success. For Example, the Code for: [...] property_getName((void*)&view) [...] RETURNS: <UILabel: 0x6b768c0; frame = (65 375; 219 21); text = 'Something'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; userInteractionEnabled = NO; layer = <CALayer: 0x6b76930>> But i'm looking for this kind of result: "firstLabel" , "secondLabel" and so on. Thanks for your help! Reagrds Joé

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  • Get more error information from unhandled error

    - by Andrew Simpson
    I am using C# in a desktop application. I am calling a DLL written in C that I do not have the source code for. Whenever I call this DLL I get an untrapped error which I trap in an UnhandledException event/delegate. The error is : object reference not set to an instance of an object But the stack trace is empty. When I Googled this the info back was that the error was being hanlded eleswhere and then rethrown. But this can only be in the DLL I do not have the source code for. So, is there anyway I can get more info about this error? This is my code... in program.cs... AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException); static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) { try { Exception _ex = (Exception)e.ExceptionObject; //the stact trace property is empty here.. } finally { Application.Exit(); } } My DLL... [DllImport("AutoSearchDevice.dll", EntryPoint = "Start", ExactSpelling = false, CallingConvention = CallingConvention.StdCall)] public static extern int Start(int ASD_HANDLE); An I call it like so: public static void AutoSearchStart() { try { Start(m_pASD); } catch (Exception ex) { } }

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  • access JRUN jndi environment vaiables from coldfusion (java)

    - by jake
    I want to put some instance specific configuration information in JNDI. I looked at the information here: http://www.adobe.com/support/jrun/working_jrun/jrun4_jndi_and_j2ee_enc/jrun4_jndi_and_j2ee_enc03.html I have added this node to the web.xml: <env-entry> <description>Administrator e-mail address</description> <env-entry-name>adminemail</env-entry-name> <env-entry-value>[email protected]</env-entry-value> <env-entry-type>java.lang.String</env-entry-type> </env-entry> In coldfusion I have tried several different approaches to querying the data: <cfset ctx = createobject("java","javax.naming.InitialContext") > <cfset val = ctx.lookup("java:comp/env") > That lookup returns a jrun.naming.JRunNamingContext. If i preform a lookup on ctx for the specific binding I am adding I get an error. <cfset val = ctx.lookup("java:comp/env/adminemail") > No such binding: adminemail Preforming a listBindings returns an empty jrun.naming.JRunNamingEnumeration. <cfset val = ctx.listBindings("java:comp/env") > I only want to put a string value (probably several) into the ENC (or any JNDI directory at this point).

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  • perl ENV value avoid escape

    - by Michael
    In my makefile I have command in variable like this substitute := perl -p -e 's/@([^@]+)@/"$(update_url)"/ge' > output.txt update_url := em:updateURL=\"http:\/\/bla\/update.rdf\"\n this works fine when I run command in target and I have newline, quotes however I need to replace $(update_url)" with environment variable, using expression like this #substitute := perl -p -e 's/@([^@]+)@/defined $$ENV{$$1} ? $$ENV{$$1} : $$1/ge' I am exporting those variables from makefile. This gives me literally em:updateURL=\"http:\/\/bla\/update.rdf\"\n on output file... so how to make the second version to give output like first version?

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  • Cannot display images in BitmapField in Blackberry application using simulator 9700?

    - by SIA
    Hi Everybody I am getting Error while displaying bitmap file in my application. code: Bitmap logoBitmap = Bitmap.getBitmapResource("res/icon.png"); BitmapField bitmapField1 = new BitmapField(logoBitmap, Field.FIELD_HCENTER); add(bitmapField1); Getting error in console tab. Error: Fridg:couldnot find res/icon.png. I am using Eclipse with Blackberry Simulator 9700. I have added the folder and images and it is displaying in the tree of Eclipse. Please help

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  • Google Maps rendering locally but not in live environment

    - by marcusstarnes
    I have a page that renders a simple google map for a specified location. This map renders without any problems at all when I run it locally on localhost, however, when I deploy this code to our live web servers (using our LIVE google API key for the appropriate domain) it fails to render, and upon putting a series of alerts within the javascript on the page, it appears that the 'Initialize' method (which should be called within body onLoad) is not being called. When I view the HTML source that is rendered on the live server it appears exactly as per the local version of the site (including the call to initialize() within the body onLoad event), albeit with the different maps API key. I have output the host (alert(window.location.host);) to ensure that the key I generated via the google maps api site, corresponds exactly to the live server, which it does. Does anyone have any ideas why it would be working locally but not when deployed to the live servers? The live site is hosted on 2 load-balanced web servers. This is the javascript that is rendered: <script src="http://maps.google.com/maps?file=api&amp;v=2&amp;sensor=false&amp;key=ABQIAAAA-BU8POZj19wRlTaKIXVM9xTz76xxk4yAELG9u79oXrhnLTB5NRRvAZ-bkKn1x8J68nfRTVOIWNPJEA" type="text/javascript"></script> <script type="text/javascript"> var map; var geocoder; alert(window.location.host); function initialize() { if (GBrowserIsCompatible()) { map = new GMap2(document.getElementById("businessMap")); map.setUIToDefault(); geocoder = new GClientGeocoder(); showAddress('St Margarets Street SW1P 3 London'); } } function showAddress(address) { geocoder.getLatLng( address, function(point) { if (!point) { // Address could not be located. jQuery('#googleMap').hide(); } else { map.setCenter(point, 13); var marker = new GMarker(point); map.addOverlay(marker); var html = 'Address info for the marker'; marker.openInfoWindow(html); GEvent.addListener(marker, "click", function() { marker.openInfoWindowHtml(html); }); } } ); } </script> Any help would be much appreciated. Thanks.

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  • Time Complexities of recursive algorithms

    - by Peter
    Whenever I see a recursive solution, or I write recursive code for a problem, it is really difficult for me to figure out the time complexity, in most of the cases I just say its exponential? How is it exponential actually? How people say it is 2^n, when it is n!, when it is n^n or n^k. I have some questions in mind, let say find all permutations of a string (O(n!)) find all sequences which sum up to k in an array (exponential, how exactly do I calculate). Find all subsets of size k whose sum is 0 (will k come somewhere in complexity , it should come right?). Can any1 help me how to calculate the exact complexity of such questions, I am able to wrote code for them , but its hard understanding the exact time complexity.

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  • How do you reach a "flow" state while programming?

    - by acrosman
    I'm not talking about program flow, but as in the state of working called flow, the state where you can get great work done the most effectively. I find that my current work environment while good in many ways does not allow me to get into a good state of mind for writing code most of the time (my job includes many other functions). If it's critical to get something done I'll often put on head-phones with classical music and try to drown out the office noise around me (and discourage co-workings from asking me questions). I am best able to get work done late in the evening when the house is quite and I've been thinking about the project for most of the day. What tricks have you found when working in less then perfect office environments?

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  • Optimizing a shared buffer in a producer/consumer multithreaded environment

    - by Etan
    I have some project where I have a single producer thread which writes events into a buffer, and an additional single consumer thread which takes events from the buffer. My goal is to optimize this thing for a single machine to achieve maximum throughput. Currently, I am using some simple lock-free ring buffer (lock-free is possible since I have only one consumer and one producer thread and therefore the pointers are only updated by a single thread). #define BUF_SIZE 32768 struct buf_t { volatile int writepos; volatile void * buffer[BUF_SIZE]; volatile int readpos;) }; void produce (buf_t *b, void * e) { int next = (b->writepos+1) % BUF_SIZE; while (b->readpos == next); // queue is full. wait b->buffer[b->writepos] = e; b->writepos = next; } void * consume (buf_t *b) { while (b->readpos == b->writepos); // nothing to consume. wait int next = (b->readpos+1) % BUF_SIZE; void * res = b->buffer[b->readpos]; b->readpos = next; return res; } buf_t *alloc () { buf_t *b = (buf_t *)malloc(sizeof(buf_t)); b->writepos = 0; b->readpos = 0; return b; } However, this implementation is not yet fast enough and should be optimized further. I've tried with different BUF_SIZE values and got some speed-up. Additionaly, I've moved writepos before the buffer and readpos after the buffer to ensure that both variables are on different cache lines which resulted also in some speed. What I need is a speedup of about 400 %. Do you have any ideas how I could achieve this using things like padding etc?

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  • Artisan unable to access environment variables from $_ENV

    - by hansn
    Any artisan command I enter into the command line throws this error: $ php artisan <? return array( 'DB_HOSTNAME' => 'localhost', 'DB_USERNAME' => 'root', 'DB_NAME' => 'pc_booking', 'DB_PASSWORD' => 'secret', ); PHP Warning: Invalid argument supplied for foreach() in /home/martin/code/www/pc_backend/vendor/laravel/framework/src/Illuminate/Config/EnvironmentVariables.php on line 35 {"error":{"type":"ErrorException","message":"Undefined index: DB_HOSTNAME","file":"\/home\/martin\/code\/www\/pc_backend\/app\/config\/database.php","line":57}} This is only on my local development system, where I recently installed apache and php. On my production system on a shared host artisan commands work just fine. The prod system has it's own .env.php, but other than that the code should be identical. Relevant files: .env.local.php <? return array( 'DB_HOSTNAME' => 'localhost', 'DB_USERNAME' => 'root', 'DB_NAME' => 'pc_booking', 'DB_PASSWORD' => 'secret', ); app/config/database.php <?php return array( 'fetch' => PDO::FETCH_CLASS, 'default' => 'mysql', 'connections' => array( 'mysql' => array( 'driver' => 'mysql', 'host' => $_ENV['DB_HOSTNAME'], 'database' => $_ENV['DB_NAME'], 'username' => $_ENV['DB_USERNAME'], 'password' => $_ENV['DB_PASSWORD'], 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', ), ), 'migrations' => 'migrations', ), ); The $_ENV array is populated as expected on the website - the problem appears to be with artisan only.

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  • Decoding and caching json every 60 minutes

    - by Gary
    Hi, How do I do this on a php webpage? I want to get and decode a json string and display the results as html on my page, however, I don't want it hotlinking back to the source. If I could write the decoded string to a txt file say weather.txt on the server and keep the html formatting and do it so that the page won't fetch the json script until 60 minutes has passed since the last time it was fetched regardless of how many times the page is opened during that 60 minute period and the weather.txt is viewed. All I can come up with is a simple script that hotlinks, everything else I have tried simply failed. $file = file_get_contents('http://sample.com/weather'); $out = (json_decode($file)); echo $out-mainText; Will appreciate any help with this.

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  • Visual Studio 2010 + Resharper Tools|Options|Environment|Fonts and Colors

    - by Gerard
    About fonts and colors in the VS2010 C# text editor with Resharper installed. In the following method: public void Method() { var lis = new System.Collections.ArrayList(); var exc = new System.NotImplementedException(); } ArrayList gets another color as NotImplementedException in the VS2010 text editor, because I edited the color scheme. What would be the difference in these kinds of types so that the color scheme handles them differently? Note that I have Resharper installed but I also tried almost all Resharper entries. I would like to have the ame color for both, but the color of the NotImplementedException type seems immutable.

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  • Best approach to create a security environment in Java

    - by Tom Brito
    I need to create a desktop application that will run third party code, and I need to avoid the third party code from export by any way (web, clipboard, file io) informations from the application. Somethig like: public class MyClass { private String protectedData; public void doThirdPartyTask() { String unprotedtedData = unprotect(protectedData); ThirdPartyClass.doTask(unprotectedData); } private String unprotect(String data) { // ... } } class ThirdPartyClass { public static void doTask(String unprotectedData) { // Do task using unprotected data. // Malicious code may try to externalize the data. } } I'm reading about SecurityManager and AccessControler, but I'm still not sure what's the best approach to handle this. What should I read about to do this implementation?

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  • How to find if a Item in a ListBox has the focus?

    - by eitan barazani
    I have a List box defined like this: <ListBox x:Name="EmailList" ItemsSource="{Binding MailBoxManager.Inbox.EmailList}" SelectedItem="{Binding SelectedMessage, Mode=TwoWay}" Grid.Row="1"> <ListBox.ItemTemplate> <DataTemplate> <usrctrls:MessageSummary /> </DataTemplate> </ListBox.ItemTemplate> </ListBox> The UserControl is defined like this: <UserControl x:Class="UserControls.MessageSummary" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="600"> <UserControl.Resources> </UserControl.Resources> <Grid HorizontalAlignment="Left"> <Grid.ColumnDefinitions> <ColumnDefinition Width="50" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <CheckBox Grid.Column="0" VerticalAlignment="Center" /> <Grid Grid.Column="1" Margin="0,0,12,0"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <Grid Grid.Row="0" Grid.Column="0" HorizontalAlignment="Stretch"> <Grid.ColumnDefinitions> <ColumnDefinition Width="30" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="80" /> <ColumnDefinition Width="80" /> </Grid.ColumnDefinitions> <Image x:Name="FlaggedImage" Grid.Column="0" Width="20" Height="10" Margin="0" VerticalAlignment="Center" HorizontalAlignment="Center" Source="/Assets/ico_flagged_white.png" /> <TextBlock x:Name="Sender" Grid.Column="1" Text="{Binding EmailProperties.DisplayFrom}" Style="{StaticResource TextBlock_SenderRowTitle}" HorizontalAlignment="Left" VerticalAlignment="Center" /> <Grid x:Name="ImagesContainer" Grid.Column="2" VerticalAlignment="Center"> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Image x:Name="ImgImportant" Grid.Column="0" Width="20" Height="20" VerticalAlignment="Center" HorizontalAlignment="Center" Source="ms-appx:///Assets/ico_important_red.png" /> <Image x:Name="ImgFolders" Grid.Column="1" Width="20" Height="20" VerticalAlignment="Center" HorizontalAlignment="Center" Source="ms-appx:///Assets/ico_ico_addtofolder.png" /> <Image x:Name="ImgAttachment" Grid.Column="2" Width="20" Height="20" VerticalAlignment="Center" HorizontalAlignment="Center" Source="ms-appx:///Assets/ico_attachment_lightgray.png" /> <Image x:Name="ImgFlag" Grid.Column="3" Width="20" Height="20" VerticalAlignment="Center" HorizontalAlignment="Center" Source="ms-appx:///Assets/ico_flag.png" /> </Grid> <TextBlock x:Name="Time" Grid.Column="3" Text="{Binding EmailProperties.DateReceived, Converter={StaticResource EmailHeaderTimeConverter}}" TextAlignment="Center" FontSize="16" VerticalAlignment="Center" Margin="0" /> </Grid> <TextBlock Grid.Row="1" Text="{Binding EmailProperties.Subject}" TextTrimming="WordEllipsis" Margin="0,10" /> <TextBlock Grid.Row="2" Text="{Binding EmailProperties.Preview}" TextTrimming="WordEllipsis" /> </Grid> </Grid> The MessageSummary is a UserControl. I would like to bind the foreground color of the Items of the ListBox to whether the item is the one selected in the list box, i.e. I would like the Item's foreground color to be Black if not selected and White if the item is selected. How can it be done? Thanks,

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  • Two tables side by side in one column LaTeX environment

    - by Gacek
    The question is similar to this one: http://stackoverflow.com/questions/1491717/how-to-display-a-content-in-two-column-layout-in-latex but about placing two tables side by side. I have two small tables looking like that: \begin{table}[t] \begin{tabular}{|c|l||r|r||r|r|} %content goes here \end{tabular} \caption{some caption} \end{table} \begin{table}[t] \begin{tabular}{|c|l||r|r||r|r|} %content goes here \end{tabular} \caption{some caption for second table} \end{table} I have one-column document and these tables are really narrow, so I would like to display them side by side (with separate captions) insted of one under another with a lot of unused, white space. I tried to do it with this \multicols but it seems that floats (tables here) cannot be placed inside of it. Any ideas?

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  • Referencing a theorem-like environment by its [name]

    - by Seamus
    I am using ntheorem to typeset a set of conditions. In my preamble I have: \theoremstyle{empty} \newtheorem{Condtion}{Condtion} When I want to typeset a condition, I write: \begin{Condtion}[name] \label{cnd:nm} foo foo foo \end{Condition} The name appears boldface on the same line as the start of the text of the condition, with no number or anything. Perfect. What I want to do now is refer to the condition by some variant of the \ref command, \ref calls the number [which is not displayed anywhere else] \thref writes "Condition n" for the nth condition \nameref writes the name of the SECTION of the label. a zref solution was suggested here, but seems unsatisfactory. Any clues?

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  • Jersey Test Framework with no Maven environment

    - by Raj Arcot
    We do not use a Maven framework in our environments. Can you suggest a way to use the Jersey test framework for testing the Rest web services? I have tried to override the TestContaioner and TestContainerFactory interfaces to set up an AppDescriptor but I fail to understand how to set the LowLevelDescriptor to use the HTTPContainerFactory instead of the default one. I tried also settign the System property jersey.test.containerFactory. Does not work?Any ideas?

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  • Dynamically find the parameter to be passed as <T> to a generic method

    - by Codex
    A generic method is defined as follows: private static T GetComparisonObject<T>(ComparisonAttribute attribute, object objectToParse) { // Perform a some action return (T)resultObject; } The method is invoked as follows: var srcObjectToCompare = GetComparisonObject<DynamicType>(attributeToCompare, srcObject); The type for which the method needs to be invoked is configured in the config file as: <add attributename ="Count" attributetype ="MemberInformation" attributeparam ="Count" type="System.Int32" comparertype="ditCreditEMGTestAutomationDifferenceEngine.Comparers.TypeComparer, ditCreditEMGTestAutomationDifferenceEngine.dll" /> The token that is passed in < for the generic methods has to be the type for which the method is being invoked. From the type key configuration in the XML, an instance of Type represnting the type can be created{i.e. Type.GetType("System.Int32")}, but how can the Type Definition be generated which can then be passed to the the Generic method? Hope am not missing something elementary here!! :-O Thanks in advance.

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  • Reflection: take values from an unknown running alpplication

    - by Dr.Lesh
    I'm writing an application that searchs for Semaphore types in the fields of unknown classes in unknown application (passed by user). I made it using Reflection and it worked. Now I want to fill up these semaphores with values, taking them from a running instance of this unknown application. So i took the class with "main" method of this unknown application, made a newInstance, and passed it when invoking the main method to start the application: Class mainClass = getItSomeWhere(); Object instance = mainClass.newInstance(); Method mainMethod = mainClass.getDeclaredMethod("main", new Class[]{String[].class}); mainMethod.invoke(instance, new Object[]{args}); and it worked fine. Now, how can I get the semaphore values, taking them from the classes of this running application, when I only have an instance of the main class? Many thanks for the answers.

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  • Best Practice: Protecting Personally Identifiable Data in a ASP.NET / SQL Server 2008 Environment

    - by William
    Thanks to a SQL injection vulnerability found last week, some of my recommendations are being investigated at work. We recently re-did an application which stores personally identifiable information whose disclosure could lead to identity theft. While we read some of the data on a regular basis, the restricted data we only need a couple of times a year and then only two employees need it. I've read up on SQL Server 2008's encryption function, but I'm not convinced that's the route I want to go. My problem ultimately boils down to the fact that we're either using symmetric keys or assymetric keys encrypted by a symmetric key. Thus it seems like a SQL injection attack could lead to a data leak. I realize permissions should prevent that, permissions should also prevent the leaking in the first place. It seems to me the better method would be to asymmetrically encrypt the data in the web application. Then store the private key offline and have a fat client that they can run the few times a year they need to access the restricted data so the data could be decrypted on the client. This way, if the server get compromised, we don't leak old data although depending on what they do we may leak future data. I think the big disadvantage is this would require re-writing the web application and creating a new fat application (to pull the restricted data). Due to the recent problem, I can probably get the time allocated, so now would be the proper time to make the recommendation. Do you have a better suggestion? Which method would you recommend? More importantly why?

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