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  • Python - List of Lists Slicing Behavior

    - by Dan Dobint
    When I define a list and try to change a single item like this: list_of_lists = [['a', 'a', 'a'], ['a', 'a', 'a'], ['a', 'a', 'a']] list_of_lists[1][1] = 'b' for row in list_of_lists: print row It works as intended. But when I try to use list comprehension to create the list: row = ['a' for range in xrange(3)] list_of_lists = [row for range in xrange(3)] list_of_lists[1][1] = 'b' for row in list_of_lists: print row It results in an entire column of items in the list being changed. Why is this? How can I achieve the desired effect with list comprehension?

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  • Visual Studio Pre build events and batch set

    - by helloworld922
    Hi, I'm trying to create call a batch file which sets a bunch of environment variables prior to building. The batch file looks something like this (it's automatically generated before-hand to detect ATI Stream SDK or NVidia CUDA toolkit): set OCL_LIBS_X86="%ATISTREAMSDKROOT%libs\x86" set OCL_LIBS_X64="%ATISTREAMSDKROOT%libs\x86_64" set OCL_INCLUDE="%ATISTREAMSDKROOT%include" However, the rest of the build doesn't seem to have access to these variables, so when I try to reference $(OCL_INCLUDE) in the C/C++GeneralAdditional include directories, it will first give me warning that environment variable $(OCL_INCLUDE) was not found, and when I try to include CL/cl.hpp the compile will fail with: fatal error C1083: Cannot open include file: 'CL/cl.hpp': No such file or directory I know that I could put these variables into the registry if I wanted to access them from the visual studio GUI, but I would really prefer not to do this. Is there a way to to get these environment variables to stick after the pre-build events? I can't reference $(ATISTREAMSDKROOT) directly because the project must be able to build for both ATI Stream and NVidia Cuda.

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  • verilog or systemc for testbench

    - by Alphaneo
    I am assigned with the task of verifying some verilog based RTL code. Now, coding the RTL testbench using verilog seems to be very difficult (for me). So I would like to try one of the following. - Try providing a PLI interface to the RTL and thereby invoke 'C functions for testing - Using system 'C for interfacing the 'C functions PS: I already have a extensive 'C code that was used for testing the behavioral model. I am new to the world of hardware programming. Any pointers would be greatly appreciated.

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  • How to Key-Value-Observe the rotation of a CALayer?

    - by HelloMoon
    I can access the value like this: NSNumber* rotationZ = [myLayer valueForKeyPath:@"transform.rotation.z"]; But for some reason, if I try to KV-observe that key path, I get a compiler error. First, this is how I try to do it: [myLayer addObserver:self forKeyPath:@"transform.rotation.z" options:0 context:nil]; The compiler tells me: *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ addObserver: forKeyPath:@"rotation.z" options:0x0 context:0x528890] was sent to an object that is not KVC-compliant for the "rotation" property.' what I don't get is, why I can access that z value by KVC key path, but not add an observer to it. Does this make sense? How else could I observe the z value of that matrix? I don't care about the other values of the matrix. Only the z rotation. Any other way to access and observe it?

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  • SSRS 2008 Interactive Sorting in Sub-Report not working as expected

    - by Ray J
    I have a (parent) report that has a list. The details group of this list contains one sub-report. So basically if the list has 10 records (rows) the sub-report is executed 10 times. The problem seems to be with interactive sorting in the Sub-Report. It has 4 columns with interactive sorting enabled. When I run the parent report and try to sort columns SSRS "remembers" the previous sort column and sorts by multiple columns at the same time. For example if I sort by Col A then click to sort by Col B, SSRS will preserve the sorting of Col A (and the direction) and then apply the sorting to Col B. However I simply want to sort by Col B and do not want to Col A to be part of the sort. When I try this directly with the sub-report everything works as expected. Any ideas why this is happening?

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  • JTable Boolean cell .. how to read it

    - by dimitar
    Hello guys, i have a table with a column that contains Boolean type. now when i try to run a program i have a problem: System.out.println(table.getColumnClass(5)); b= (Boolean)table.getValueAt(row, 5); It prints class java.lang.Boolean but also: Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean and i even try with b= (Boolean)table.getValueAt(row, 5); b= Boolean.parseBoolean((String)table.getValueAt(row, 5)); b= table.getValueAt(row, 5); but those show error too. So how to fix this guys?

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  • implement button click in html

    - by vbNewbie
    I have been trying to execute a button event in html page that displays additional content on the web page. I am getting a null reference error when using the getelementbyid and not sure how to change this. Here is the html reference I need to engage: <div class="button" style="float:none;width:180px;margin:20px auto 30px;"><a href="#" id="more" style="width:178px">Show more ?</a></div> </div> and here is my code: Dim wb As New WebBrowser wb.Navigate(fromUrl) While wb.ReadyState <> WebBrowserReadyState.Complete Application.DoEvents() End While Debug.Write(wb.DocumentText) Dim htmlElements As HtmlElementCollection = wb.Document.GetElementsByTagName("<a") If Not wb.Document Is Nothing Then Try If wb.DocumentText.Contains("more") Then If wb.Document.GetElementById("more").GetAttribute("href") Then wb.Document.GetElementById("more").InvokeMember("#") End If End If Catch ex As Exception MessageBox.Show(ex.Message.ToString) End Try End If I appreciate any ideas.

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  • how to get dragged event in JQuery UI sortable ?

    - by Sijo
    i am using this jquery to make a drag and drop sortable list. http://jqueryui.com/demos/sortable/ how i can catch the dragged event of elements ? <script> $(document).ready(function() { $("#sortable").sortable(); }); </script> please help me.am not familiar with jquery.thanks in advance..i need to get the id of dragged element.

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  • Exception thrown when using WScript via COM in PHP

    - by user198729
    try { $cmd = 'php path_to_file.php args'; $WshShell = new COM("WScript.Shell"); $oExec = $WshShell->Run($cmd, 1, false); } catch( Exception $e ) { echo 'Caught exception: ', $e->getMessage(), "\n"; } It reports: Caught exception: Source: Unknown Description: Unknown Has anyone met this kind of problem ?

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  • Errors caught by WBT, but not BBT and vice versa

    - by David Relihan
    Hi Folks, Can you think of one type of error that might be found using White-Box testing, and one type using Black-Box testing. i.e. an error that would be found by one and not the other. For WBT there would null else statements, but what would you catch with BBT and not WBT??? BTW this question is just based on my own personal study - I'm not getting free marks out of this!!!! Thanks,

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  • Namespaces and deserialization issue

    - by CaffGeek
    UPDATE: You can run the code at the end of this to recreate and see the error I am having and hopefully solve it! UPDATE2: It's not the removal of the xmlns="" that's the issue... as you can remove it from the initial xml string. The problem is with the [XmlType(TypeName = "Systems")] somehow causing it to be added... UPDATE3: Turns out the problem is in here, I need to set the TypeName based on what is in the existing, XmlTypeAttribute if it already exists on the class.... xmlAttributes.XmlType = new XmlTypeAttribute { Namespace = "" }; I get the following XML as a string from a webservice <Systems xmlns=""> <System id="1"> <sys_name>ALL</sys_name> </System> <System id="2"> <sys_name>asdfasdf</sys_name> </System> <System id="3"> <sys_name>fasdfasf</sys_name> </System> <System id="4"> <sys_name>asdfasdfasdf</sys_name> </System> </Systems> I then execute this, to convert it to an object result = XElement.Parse(xmlResult.OuterXml).Deserialize<AwayRequestSystems>(); Strangely though, in the Deserialize method, while the RemoveAllNamespaces works and returns the xml without the namespace I get the error <Systems xmlns=''> was not expected. in the catch when return (T) serializer.Deserialize(reader); executes! Why is it doing this? The xmlns is GONE!!! EXECUTABLE CODE! (Just put it in a test project) using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Xml; using System.Xml.Linq; using Microsoft.VisualStudio.TestTools.UnitTesting; using System.Xml.Serialization; namespace DeserializationTest { [TestClass] public class UnitTest1 { public TestContext TestContext { get; set; } [TestMethod] public void RemoveXmlnsFromSystems() { var xml = XElement.Parse(@"<Systems xmlns=""""> <System id=""1""> <sys_name>ALL</sys_name> </System> <System id=""2""> <sys_name>ePO</sys_name> </System> <System id=""3""> <sys_name>iEFT</sys_name> </System> <System id=""4""> <sys_name>Away Requests</sys_name> </System> <System id=""5""> <sys_name>RP3</sys_name> </System> </Systems>"); var systems = xml.Deserialize<AwayRequestSystems>(); Assert.IsInstanceOfType(systems, typeof(AwayRequestSystems)); var xmlnsFree = xml.RemoveAllNamespaces(); var str = xmlnsFree.ToString(); Debug.WriteLine(str); Assert.AreNotEqual("Error", xmlnsFree.Name.ToString(), "Serialization Error"); Assert.IsFalse(str.Contains("xmlns"), "Xmlns still exists"); } } [XmlType(TypeName = "Systems")] public class AwayRequestSystems : List<AwayRequestSystem> { } [XmlType(TypeName = "System")] public class AwayRequestSystem { [XmlAttribute("id")] public int ID { get; set; } [XmlElement("sys_name")] public string Name { get; set; } } public static class XmlSerializerFactory { private static Dictionary<Type, XmlSerializer> _serializers = new Dictionary<Type, XmlSerializer>(); public static void ResetCache() { _serializers = new Dictionary<Type, XmlSerializer>(); } public static XmlSerializer GetSerializerFor(Type typeOfT) { if (!_serializers.ContainsKey(typeOfT)) { var xmlAttributes = new XmlAttributes(); var xmlAttributeOverrides = new XmlAttributeOverrides(); Debug.WriteLine(string.Format("XmlSerializerFactory.GetSerializerFor(typeof({0}));", typeOfT)); xmlAttributes.XmlType = new XmlTypeAttribute { Namespace = "" }; xmlAttributes.Xmlns = false; var types = new List<Type> { typeOfT, typeOfT.BaseType }; foreach (var property in typeOfT.GetProperties()) { types.Add(property.PropertyType); } types.RemoveAll(t => t.ToString().StartsWith("System.")); foreach (var type in types) { if (xmlAttributeOverrides[type] == null) xmlAttributeOverrides.Add(type, xmlAttributes); } var newSerializer = new XmlSerializer(typeOfT, xmlAttributeOverrides); //var newSerializer = new XmlSerializer(typeOfT, xmlAttributeOverrides, types.ToArray(), new XmlRootAttribute(), string.Empty); //var newSerializer = new XmlSerializer(typeOfT, string.Empty); _serializers.Add(typeOfT, newSerializer); } return _serializers[typeOfT]; } } public static class XElementExtensions { public static XElement RemoveAllNamespaces(this XElement source) { if (source.HasAttributes) source.Attributes().Where(a => a.Name.LocalName.Equals("xmlns")).Remove(); return source.HasElements ? new XElement(source.Name.LocalName, source.Attributes()/*.Where(a => !a.Name.LocalName.Equals("xmlns"))*/, source.Elements().Select(el => RemoveAllNamespaces(el)) ) : new XElement(source.Name.LocalName) { Value = source.Value }; } } public static class SerializationExtensions { public static XElement Serialize(this object source) { try { var serializer = XmlSerializerFactory.GetSerializerFor(source.GetType()); var xdoc = new XDocument(); using (var writer = xdoc.CreateWriter()) { serializer.Serialize(writer, source, new XmlSerializerNamespaces(new[] { new XmlQualifiedName("", "") })); } var result = (xdoc.Document != null) ? xdoc.Document.Root : new XElement("Error", "Document Missing"); return result.RemoveAllNamespaces(); } catch (Exception x) { return new XElement("Error", x.ToString()); } } public static T Deserialize<T>(this XElement source) where T : class { //try //{ var serializer = XmlSerializerFactory.GetSerializerFor(typeof(T)); var cleanxml = source.RemoveAllNamespaces(); var reader = cleanxml.CreateReader(); return (T)serializer.Deserialize(reader); //} //catch (Exception x) //{ // return null; //} } } }

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  • Easiest Way to read the response from WebResponse

    - by Stacker
    private void RespCallback(IAsyncResult asynchronousResult) { try { WebRequest myWebRequest1 = (WebRequest)asynchronousResult.AsyncState; // End the Asynchronous response. WebResponse webResponse = myWebRequest1.EndGetResponse(asynchronousResult); } catch (Exception) { //TODO:Log the error } } now having the webResponse Object ,what is the easiest way to read its contents?

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  • Funny characters in my db

    - by hdx
    My web app is breaking when I try edit a certain content type and I'm pretty sure it is because of some weird characters in my database. So when I do: SELECT body FROM message WHERE id = 666 it returns: <p>⢠<span></span></p><p><br /></p><p><em><strong>NOTE:</strong> Please remember to use your to participate in the discussion.</em></p> However when I try to count how many documents have those characters postgres complains: foo_450_prod=# SELECT COUNT(*) FROM message WHERE body LIKE'%â¢%'; ERROR: invalid byte sequence for encoding "UTF8": 0xe2a225 HINT: This error can also happen if the byte sequence does not match the encodi Does anybody know what the issue is and how I can query for those funny characters? Thanks in advance!

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  • Sockets receiving null (Android)

    - by Henrik
    I have a android app that is communicating with a server (written in java). Between these two parts I have established a Socket connection and want to send data. The problem I am having is that sometimes, for some users, the information that reaches the server is null. This works (for all phones, all users): Server: int a = Integer.parseInt(in.readLine()); int b = Integer.parseInt(in.readLine()); int c = Integer.parseInt(in.readLine()); int d = Integer.parseInt(in.readLine()); String checksum = in.readLine(); String model = in.readLine(); String device = in.readLine(); String name = in.readLine(); Client: out.println(a); out.println(b); out.println(c); out.println(d); out.println(hash); out.println(Build.MODEL); out.println(Build.DEVICE); String name = fixName(); out.print(name); out.flush(); This does not work (for some users): Server: int a = Integer.parseInt(in.readLine()); String checksum = in.readLine(); String model = in.readLine(); String device = in.readLine(); String name = in.readLine(); String msg = in.readLine(); int version = -1; String test = "hej"; try{ test = in.readLine(); version = Integer.parseInt(test); }catch(Exception e){ e.printStackTrace(); } Client: out.println(a); out.println(hash); out.println(Build.MODEL); out.println(Build.DEVICE); String name = fixName(); if(name == null) name = "John Doe"; out.println(name); String msg = fixMsg(); if(msg == null) name = "nada"; out.println(msg); out.println(curversion); out.flush(); Sometimes, in the second case, the name, msg, and version (the string test) are null at the server side. The catch is triggered because test is null. curversion,a are ints, the rest are strings. Any ideas?

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  • Events with QGraphicsItemGroup

    - by onurozcelik
    In my application I want to use QGraphicsItemGroup for grouping items into one item. I played with it a little and not sure using it because when I want to catch events, events are merged together but I want to handle specific event with specific child. How can I achieve this?

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  • Mongomapper - unit testing with shoulda on rails 2.3.5

    - by egarcia
    I'm trying to implement shoulda unit tests on a rails 2.3.5 app using mongomapper. So far I've: Configured a rails app that uses mongomapper (the app works) Added shoulda to my gems, and installed it with rake gems:install Added config.frameworks -= [ :active_record, :active_resource ] to config/environment.rb so ActiveRecord isn't used. My models look like this: class Account include MongoMapper::Document key :name, String, :required => true key :description, String key :company_id, ObjectId key :_type, String belongs_to :company many :operations end My test for that model is this one: class AccountTest < Test::Unit::TestCase should_belong_to :company should_have_many :operations should_validate_presence_of :name end It fails on the first should_belong_to: ./test/unit/account_test.rb:3: undefined method `should_belong_to' for AccountTest:Class (NoMethodError) Any ideas why this doesn't work? Should I try something different from shoulda? I must point out that this is the first time I try to use shoulda, and I'm pretty new to testing itself.

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  • Handling Google clientLogin Captcha Example

    - by Yan Cheng CHEOK
    I have a desktop application. I try to perform authentication using http://code.google.com/apis/accounts/docs/AuthForInstalledApps.html However, whenever I get a Captcha challenge, I use a HTTP GET request (I test using web browser) to get the image to present to user. https://www.google.com/accounts/Captcha?ctoken=Y-DrsDJRiWNOP3gR7fq0PAq4Yxvi3UXewu7P7jgAKjk0eZKQ358nbh27-JZ3-nlzXvfKOD3JvZNXwmlRunyz8jPKzqmkOLw2LYb3ZWjg-tE%3A0gMUFttsSH7QwganSJd1aw However, I always get the images : Sorry, we are unable to handle your request at this time. Please try again later. Any idea what I had did wrong? Thanks!

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  • How can I implement JMS MessageListener?

    - by newbie
    I tried to implement MessageListener, but it dosen't work, but when I use MessageListner, it doesn't work. So what should I do that MessageListener starts working, I'm using jboss 4.02. recv.receive(); // This works recv.setMessageListener(new ExListener()); // This doesn't work public static class ExListener implements MessageListener { public void onMessage(Message msg) { TextMessage tm = (TextMessage) msg; try { System.out.println("onMessage, recv text="+tm.getText()); } catch(Throwable t) { t.printStackTrace(); } } }

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  • datetime command line argument in python 2.4

    - by Ike Walker
    I want to pass a datetime value into my python script on the command line. My first idea was to use optparse and pass the value in as a string, then use datetime.strptime to convert it to a datetime. This works fine on my machine (python 2.6), but I also need to run this script on machines that are running python 2.4, which doesn't have datetime.strptime. How can I pass the datetime value to the script in python 2.4? Here's the code I'm using in 2.6: parser = optparse.OptionParser() parser.add_option("-m", "--max_timestamp", dest="max_timestamp", help="only aggregate items older than MAX_TIMESTAMP", metavar="MAX_TIMESTAMP(YYYY-MM-DD HH24:MM)") options,args = parser.parse_args() if options.max_timestamp: # Try parsing the date argument try: max_timestamp = datetime.datetime.strptime(options.max_timestamp, "%Y-%m-%d %H:%M") except: print "Error parsing date input:",sys.exc_info() sys.exit(1)

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  • Power error handling inside of sql function

    - by user172062
    I have a power function call inside of a sql function. What is the correct way to handle overflow and underflow conditions since I cannot use a Try Catch inside of a function. I am also trying to avoid modifying the ARITHABORT, ANSI_WARNINGS, and ARITHIGNORE settings in the calling code. GO CREATE FUNCTION TestPow() RETURNS DECIMAL(30, 14) AS BEGIN DECLARE @result FLOAT SET @result = POWER(10.0, 300) RETURN @result END GO SELECT dbo.TestPow()

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  • Error Handling for Application in PHP

    - by Zubair1
    I was wondering if someone can show me a good way to handle errors in my PHP app, that i am also easily able to reuse in my codes. So far i have been using the following functions: Inline Errors function display_errors_for($fieldname) { global $errors; if (isset($errors[$fieldname])) { return '<label for="' .$fieldname. '" class="error">' . ucfirst($errors[$fieldname]). '</label>'; } else { return false; } } All Errrors function display_all_errors($showCounter = true) { global $errors; $counter = 0; foreach ($errors as $errorFieldName => $errorText) { if ($showCounter == true) { $counter++; echo '<li>' . $counter . ' - <label for="' .$errorFieldName. '">' .$errorText. '</label></li>'; } else { echo '<li><label for="' .$errorFieldName. '">' .$errorText. '</label></li>'; } } } I have a $errors = array(); defined on the top of my global file, so it is appended to all files. The way i use it is that if i encounter an error, i push a new error key/value to the $errors array holder, something like the following: if (strlen($username) < 3) { $errors['username'] = "usernames cannot be less then 3 characters."; } This all works great and all, But i wondering if some one has a better approach for this? with classes? i don't think i want to use Exceptions with try/catch seems like an overkill to me. I'm planning to make a new app, and i'll be getting my hands wet with OOP alot, though i have already made apps using OOP but this time i'm planning to go even deeper and use OOP approach more extensively. What i have in mind is something like this, though its just a basic class i will add further detail to it as i go deeper and deeper in my app to see what it needs. class Errors { public $errors = array(); public function __construct() { // Initialize Default Values // Initialize Methods } public function __destruct() { //nothing here too... } public function add($errorField, $errorDesc) { if (!is_string($errorField)) return false; if (!is_string($errorDesc)) return false; $this->errors[$errorField] = $errorDesc; } public function display($errorsArray) { // code to iterate through the array and display all errors. } } Please share your thoughts, if this is a good way to make a reusable class to store and display errors for an entire app, or is getting more familiar with exceptions and try/catch my only choice?

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  • Keyboard input with timeout in Python

    - by J. Pablo Fernández
    How would you prompt the user for some input but timing out after N seconds? Google is pointing to a mail thread about it at http://mail.python.org/pipermail/python-list/2006-January/533215.html but it seems not to work. The statement in which the timeout happens, no matter whether it is a sys.input.readline or timer.sleep(), I always get: <type 'exceptions.TypeError'>: [raw_]input expected at most 1 arguments, got 2 which somehow the except fails to catch.

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  • Error in R for missing object

    - by griffin
    I have several nested functions, some of which as called in lapply clauses. In the process, sometimes I don't set a default for a parameter and instead check if it was supplied using the missing function. I'm getting a strange error right now when I'm not passing a value for a parameter, it has no default, yet missing resolves to FALSE. And when I try to use or check the parameter in any other way (using length, exists, etc.), I get an error: Error in try(length(x)) : argument "data" is missing, with no default Has anyone experienced this failure of the missing function before?

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  • In VisualStudio 2008, emacs mode - how can you enable "overwrite"?

    - by Abby Fichtner
    Using VisualStudio 2008, have emacs keyboard mapping scheme enabled. If I select text and try to paste over it, it INSERTS the new text, rather than replacing it. Also, if I select text and hit DELETE it deletes the first character AFTER the selected text (just as if I didn't have any text selected). Does anyone know how to fix this so that I get the standard windows behavior. That is: If I select text and try to paste over it, it replaces the selected text with what I pasted in. If I select text and hit the DELETE key, it actually deletes the text I have selected Thanks! Abby

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  • Java - Runtime.getRuntime().exec() what's going on?

    - by kunkanwan
    Hi, I have problem with Runtime.exec() in Java My code: String lol = "/home/pc/example.txt"; String[] b = {"touch", lol}; try { Runtime.getRuntime().exec(b); } catch(Exception ex) { doSomething(ex); } It's working good but when I trying changle variable "lol" files doesn't create in hard disk for instance: String lol = x.getPath(); where getPath() returns String What should I do ? Thanks for your reply :)

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