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• Is TcpClient BeginRead/Send thread safe?

  - by wb

  Using a dotNET TcpClient if I have called an asynchronous BeginRead() on the associated network stream can I still call Write() on that stream on another thread? Or do I have to lock() the TcpClient in the code that is called back from the BeginRead and the code that does the send? Also if I close the TcpClient with: client.GetStream().Close(); client.Close(); Do I have to lock() on the TcpClient as well? Thanks in advance.

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• Showing each step geocode of directions

  - by Puru puru rin..

  Hello, Google Maps API can build a Direction from a source to a destination. In the following Google's example, each step are published into the HTML code: http://code.google.com/apis/maps/documentation/examples/directions-simple.html I would like to get the Geocoding of each step of this direction, and store them in a array. I believe it's possible, but I don't see how to process. Many Thanks for any answer. Regards

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• More advanced usage of interfaces

  - by owca

  To be honest I'm not quite sure if I understand the task myself :) I was told to create class MySimpleIt, that implements Iterator and Iterable and will allow to run the provided test code. Arguments and variables of objects cannot be either Collections or arrays. The code : MySimpleIt msi=new MySimple(10,100, MySimpleIt.PRIME_NUMBERS); for(int el: msi) System.out.print(el+" "); System.out.println(); msi.setType(MySimpleIterator.ODD_NUMBERS); msi.setLimits(15,30); for(int el: msi) System.out.print(el+" "); System.out.println(); msi.setType(MySimpleIterator.EVEN_NUMBERS); for(int el: msi) System.out.print(el+" "); System.out.println(); The result I should obtain : 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 15 17 19 21 23 25 27 29 16 18 20 22 24 26 28 30 And here's my code : import java.util.Iterator; interface MySimpleIterator{ static int ODD_NUMBERS=0; static int EVEN_NUMBERS = 1; static int PRIME_NUMBERS = 2; int setType(int i); } public class MySimpleIt implements Iterable, Iterator, MySimpleIterator { public MySimple my; public MySimpleIt(MySimple m){ my = m; } public int setType(int i){ my.numbers = i; return my.numbers; } public void setLimits(int d, int u){ my.down = d; my.up = u; } public Iterator iterator(){ Iterator it = this.iterator(); return it; } public void remove(){ } public Object next(){ Object o = new Object(); return o; } public boolean hasNext(){ return true; } } class MySimple { public int down; public int up; public int numbers; public MySimple(int d, int u, int n){ down = d; up = u; numbers = n; } } In the test code I have error in line when creating MySimpleIt msi object, as it finds MySimple instead of MySimpleIt. Also I have errors in for-each loops, because compiler wants 'ints' there instead of Object. Anyone has any idea on how to solve it ?

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• Java Charset problem on linux

  - by scot

  Hi, problem: I have a string containing special characters which i convert to bytes and vice versa..the conversion works properly on windows but on linux the special character is not converted properly.the default charset on linux is UTF-8 as seen with Charset.defaultCharset.getdisplayName() however if i run on linux with option -Dfile.encoding=ISO-8859-1 it works properly.. how to make it work using the UTF-8 default charset and not setting the -D option in unix environment. edit: i use jdk1.6.13 edit:code snippet works with cs = "ISO-8859-1"; or cs="UTF-8"; on win but not in linux String x = "½"; System.out.println(x); byte[] ba = x.getBytes(Charset.forName(cs)); for (byte b : ba) { System.out.println(b); } String y = new String(ba, Charset.forName(cs)); System.out.println(y); ~regards daed

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• C# - google translate

  - by Ockonal

  Hi guys. I have to translate some text with google's translate service. All code I've founded don't work. I think after changing that service. Maybe someone has working code. I'll be very glad. Thanks

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• how to send file via http with python

  - by ep45

  Hello, I have a problem. I use Apache with mod_wsgi and webpy, and when i send a file on http, a lot packets are lost. This is my code : web.header('Content-Type','video/x-flv') web.header('Content-length',sizeFile) f = file(FILE_PATH, 'rb') while True: buffer = f.read(4*1024) if buffer : yield buffer else : break f.close() What in my code is wrong ? thanks.

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• struct.error: unpack requires a string argument of length 4

  - by Thomas O

  Python says I need 4 bytes for a format code of "BH": struct.error: unpack requires a string argument of length 4 Here is the code, I am putting in 3 bytes as I think is needed: major, minor = struct.unpack("BH", self.fp.read(3)) "B" = Unsigned char (1 byte) + "H" unsigned short (2 bytes) = 3 bytes (!?) struct.calcsize("BH") says 4 bytes.

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• BigDecimal serialization in GWT

  - by Domchi

  What is your preferred approach to serializing BigDecimal in GWT? Are there any clever workarounds, or do you simply use Double or String? Of all of the GWT pains this is so far the biggest; I'd hate to create two models, one for server and one for GWT, and transform data from one to the other. On the other hand, while I don't care much about using String instead of, say, javax.xml.datatype.Duration, I have to use BigDecimal on the server because of the calculations, which means either two models and conversion, or tons of tiny conversions to BigDecimal for every calculation.

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• WPF / Silverlight Binding when setting DataTemplate programically

  - by Daniel

  I have my little designer tool (my program). On the left side I have TreeView and on the right site I have Accordion. When I select a node I want to dynamically build Accordion Items based on Properties from DataContext of selected node. Selecting nodes works fine, and when I use this sample code for testing it works also. XAML code: <layoutToolkit:Accordion x:Name="accPanel" SelectionMode="ZeroOrMore" SelectionSequence="Simultaneous"> <layoutToolkit:AccordionItem Header="Controller Info"> <StackPanel Orientation="Horizontal" DataContext="{Binding}"> <TextBlock Text="Content:" /> <TextBlock Text="{Binding Path=Name}" /> </StackPanel> </layoutToolkit:AccordionItem> </layoutToolkit:Accordion> C# code: private void treeSceneNode_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { if (e.NewValue != e.OldValue) { if (e.NewValue is SceneNode) { accPanel.DataContext = e.NewValue; //e.NewValue is a class that contains Name property } } } But the problem occurs when I'm trying to achive this using DateTemplate and dynamically build AccordingItem, the Binding is not working: <layoutToolkit:Accordion x:Name="accPanel" SelectionMode="ZeroOrMore" SelectionSequence="Simultaneous" /> and DataTemplate in my ResourceDictionary <DataTemplate x:Key="dtSceneNodeContent"> <StackPanel Orientation="Horizontal" DataContext="{Binding}"> <TextBlock Text="Content:" /> <TextBlock Text="{Binding Path=Name}" /> </StackPanel> </DataTemplate> and C# code: private void treeSceneNode_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e) { if (e.NewValue != e.OldValue) { ResourceDictionary rd = new ResourceDictionary(); rd.Source = new Uri("/SilverGL.GUI;component/SilverGLDesignerResourceDictionary.xaml", UriKind.RelativeOrAbsolute); if (e.NewValue is SceneNode) { accPanel.DataContext = e.NewValue; AccordionItem accController = new AccordionItem(); accController.Header = "Controller Info"; accController.ContentTemplate = rd["dtSceneNodeContent"] as DataTemplate; accPanel.Items.Add(accController); } else { // Other type of node } } } I really need help with this issue. Thanks for any support.

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• mvc action link error message

  - by user281180

  What is wrong with this statement? <%= Html.ActionLink("Assign Users", new { Controller="Users", Action="Index", Query="Index", Page=2932 })% I`m having the following error: Error 10 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'ActionLink' and the best extension method overload 'System.Web.Mvc.Html.LinkExtensions.ActionLink(System.Web.Mvc.HtmlHelper, string, string)' has some invalid arguments c:\Code\MvcUI\Views\Project\Index.aspx 17 22 MvcUI Error 11 Argument '3': cannot convert from 'AnonymousType#1' to 'string' c:\Code\MvcUI\Views\Project\Index.aspx 17 54 MvcUI

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• Computer Language puns and jokes

  - by Mark Harrison

  I'm looking for some funny jokes and puns that occur in computer languages. I'll post an oldie to kick things off... What are some others? update: Especially looking for code-related jokes... the ones that only make sense to programmers reading code.

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• How do you convert date taken from a bash script to milliseconds in a Java program?

  - by Matt Pascoe

  I am writing a piece of code in Java that needs to take a time sent from a bash script and parse the time to milliseconds. When I check the millisecond conversion on the date everything is correct except for the month I have sent which is January instead of March. Here is the variable I create in the bash script, which later in the script I pass to the Java program: TIME=`date +%m%d%Y_%H:%M:%S` Here is the Java code which parses the time to milliseconds: String dt = "${scriptstart}"; java.text.SimpleDateFormat scriptStart = new java.text.SimpleDateFormat("MMDDyyyy_HH:mm:ss"); long start = scriptStart.parse(dt).getTime(); The goal of this statement is to find the elapsed time between the start of the script and the current system time. To troubleshoot this I printed out the two: System Time = 1269898069496 (converted = Mon Mar 29 2010 16:27:49 GMT-0500 (Central Daylight Time)) Script Start = 03292010_16:27:45 Script Start in Milli = 1264804065000 (Converted = Fri Jan 29 2010 16:27:45 GMT-0600 (Central Standard Time))

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• How to exclude classes exported for actionscript in AsDoc

  - by Bartvbl

  I am trying to use AsDoc on the code of one of my projects in flash. Some of the classes that I use inside the code are "exported for actionscript" classes from my FLA file. Of course the AsDoc compiler complains that those classes are not defined anywhere. Does anyone know how to make it ignore these class types?

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• Structure of NAnt build scripts and solution structure on build server

  - by llykke

  We're in the process of streamlining/automating build, integration and unit testing as well as deployment. Our software is developed in Visual Studio where we have use both C# and VB.NET in our projects. A single project can be contained within multiple solutions (i.e. Utils project is used in both ProductA and ProductB solutions) For historical reasons our code repository isn't as well structured as one could have hoped for. E.g. Utils project might be located under ProductA solution (because that's were it was first used) but it was later deemed useful for productB development and merely just included into the solution of productB (but still located in a subdirectory of productA). I would like to use continous integration testing and have setup a CC.NET build server where I intend to use NAnt for creating the actual builds. Question 1: How should I structure my builds on the buildserver? Should I instruct CC.NET to retrieve all the projects for productB into a single library e.g. a file structure similar to -ProductB --Utils --BetterUtils --Data or should I opt for a filestructure similar to this -ProductA --Utils -ProductB --BetterUtils --Data and then just have the NAnt build scripts handle the references? Our references in VS doesn't match the actual location in the code repository so it's not possible today to just check-out productB solution and build it straight away (unfortunately). I hope this question makes sense? Question 2: Is it better to check out all the source code located in different projects into a single file folder (whilst retaining some kind of structure) and then build every thing at once or have multiple projects in CC.NET and then let the CC.NET server handle dependencies? Example: Should I have a seperate project in CC.NET for monitoring the automated build/test of Utils project when it's never released on it's own? Or should I just build/test it whilst building it as part of ProductB? I hope the above makes sense and that you can provide me with some arguments for using either option. We're nowhere near an ideal source code repository structure and I would prefer if I can resolve the lack of repository structure on the build server instead of having to clean up the structure of our repository. Switching away from VSS is (unfortunately) not an option. Right now our build consists of either deploying via VS clickonce or pressing F5 so just getting the build automated would be a huge step up for us. Thanks

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• How to resolve warning about does not implement the 'UIActionSheetDelegate' protocol

  - by RAGOpoR

  here is my .h code @interface ROSettingViewController : UITableViewController { UISwitch *switchCtl; UISwitch *switchCtl1; NSArray *dataSourceArray; } @property (nonatomic, retain, readonly) UISwitch *switchCtl; @property (nonatomic, retain, readonly) UISwitch *switchCtl1; @property (nonatomic, retain) NSArray *dataSourceArray; - (void)dialogOKCancelAction; - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex; @end /Users/ragopor/Desktop/Power Spot beta 2/code/Classes/ROSettingViewController.m:321: warning: class 'ROSettingViewController' does not implement the 'UIActionSheetDelegate' protocol

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• VBA + Send Mail from Word 2007

  - by Nev_Rahd

  I got below code in my Word Document (office 2007) to send a mail with attachement It throws syntax error (file not found) at line .Attachement.Add "C:\abc.txt" Code: Private Sub CommandButton1_Click() Dim outlookapp As Object Dim item As Object Dim subject As String Dim msg As String Set outlookapp = CreateObject("outlook.application") msg = "Enter Message here" subject = "Enter subject here" Set item = outlookapp.createitem(0) With item .to = "[email protected] <mailto:[email protected]> " .subject = subject .body = msg .Display .Attachments.Add "C:\abc.txt" End With End Sub What am I doing wrong ? Thanks

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• GCC 4.5 C grammar source

  - by Hrukai Whoever

  Where is the C grammar in the GCC source code 4.5? I already got the source code, but there is a lot of files.

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• Connecting client (on VirtualBox) and server (on localhost) using CORBA - org.omg.CORBA.BAD_PARAM:

  - by yak

  Im working now on simple gui appllication in Java/C++ and CORBA. I want my client on VirtualBox connect to server on localhost. When I have a simple app, like a calc I wrote about earlier its just fine. But when it comes to run client which needs some args witch javas -cp option, Im getting errors. (Theres no such problem when I have both client and server in localhost!) My errors: WARNING: "IOP00100007: (BAD_PARAM) string_to_object conversion failed due to bad scheme name" org.omg.CORBA.BAD_PARAM: vmcid: OMG minor code: 7 completed: No at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.resolver.INSURLOperationImpl.operate(Unknown So urce) at com.sun.corba.se.impl.resolver.ORBInitRefResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(Unknown Source) at ClientConnection.connect(ClientConnection.java:57) at Client.main(Client.java:295) Exception in thread "main" org.omg.CORBA.BAD_PARAM: vmcid: OMG minor code: 7 completed: No at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.logging.OMGSystemException.soBadSchemeName(Unkn own Source) at com.sun.corba.se.impl.resolver.INSURLOperationImpl.operate(Unknown So urce) at com.sun.corba.se.impl.resolver.ORBInitRefResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source) at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(Unknown Source) at ClientConnection.connect(ClientConnection.java:57) at Client.main(Client.java:295) make[1]: *** [run] Error 1 ClientConnection.java:57 is a line objRef = clientORB.resolve_initial_references("NameService"); Client.java:295 is a line: ClientConnection.connect(args); A connect method is just an ordinary client-connection corba code. I ran my example: 1) C:\Temp\Client>java -cp .:../Dir1:../Dir2 Client -ORBInitRef NameService =corbaloc::192.168.56.1:2809/NameService Error: Could not find or load main class Client so its even didnt run at all .. 2) with the help of a Makefile: HOST = 192.168.56.1 PORT = 2809 NAMESERVICE = NameService run: java -cp .:../Dir1:../Dir2 Client -ORBInitRef NameService=corbaloc::$(HOST):$(PORT)/$(NAMESERVICE) by typing make run and then I got those error I posted earlier. Whats wrong? I mean, a simple code works fine but gui version doesnt want to ... is there a problem with -cp option? I cant change my apps' dir tree.

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• Monotouch stringWithFormat using a URL

  - by Pselus

  I'm trying to learn the MapKit with Monotouch and I'm having difficulty figuring out how to search for an address. I finally found this snippet of Objective-C code that might help but it has a line where they use a URL to get a return value and I have no idea how to use this code in C#: NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; If anyone could give me some advice that would be helpful.

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• Perl Test::More, get stdout

  - by Mike

  Is there a way inside a Perl test case using Test::More to get the program's stdout For instance, if I do use Test::More; ok(foo()); #in the code I am testing sub foo() { print "hello" } "hello" will not be visible. I would like to see it. edit I know I can use diag(), however this would not work if the print is inside the code I am testing

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• How does Linq-to-Xml convert objects to strings?

  - by Eamon Nerbonne

  Linq-to-Xml contains lots of methods that allow you to add arbitrary objects to an xml tree. These objects are converted to strings by some means, but I can't seem to find the specification of how this occurs. The conversion I'm referring to is mentioned (but not specified) in MSDN. I happen to need this for javascript interop, but that doesn't much matter to the question. Linq to Xml isn't just calling .ToString(). Firstly, it'll accept null elements, and secondly, it's doing things no .ToString() implementation does: For example: new XElement("elem",true).ToString() == "<elem>true</elem>" //but... true.ToString() == "True" //IIRC, this is culture invariant, but in any case... true.ToString(CultureInfo.InvariantCulture) == "True" Other basic data types are similarly specially treated. So, does anybody know what it's doing and where that's described?

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• showmodaldialog function in ie8

  - by naweli

  i have written a showmodaldialog() fuction in a jsp file and its working well in firefox but in ie8 its now working,my code is here : <-----a.jsp------ <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"% Step Editor function test() { var retvalue; retvalue = window.showModalDialog("index.jsp"); } <--------- in the above code a.jsp is parent window which is calling index.jsp as child window. <----index.jsp-----

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• Track results of a regular expression extractor in JMeter

  - by Glenn Slaven

  Our server returns a custom 'X-Execution-Time' HTTP response header that returns in miliseconds the time between the server getting a request and our code returning a page, ie how long our code takes to run. I'm using JMeter to do some testing & I'd like to be able to report on this number of over time. I've setup this regular expression extractor: X-Execution-Time:\s(\d+) but I don't know how to get JMeter to report on this number per request so i can get a trend over time

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• How to launch the market intent in 'Give Feedback' mode on android.

  - by Paul Maidment

  Hi There, I have just written a game for the Android market and would like to remind my customers to leave feeback on the market for the application (especially the demo version.) Is there any way to launch the market intent in a mode that will take the user to the feedback / comments section of the page? I already use this approach for linking my demo to the paid app... Intent goToMarket = null; goToMarket = new Intent(Intent.ACTION_VIEW,Uri.parse("market://details?id=com.paulmaidment.games.flagsoftheworld")); startActivity(goToMarket); Is there a best practice that any Android devs out there might know of? Additionally, is there any way to track referalls from my demo app so that I can try to calculate some kind of a conversion rate? (i.e. how effective the demo app is at generating sales.) Thanks, Paul

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• Simulating MySQL's ORDER BY FIELD() in Postgresql

  - by Peer Allan

  Hello all, Just trying out Postgresql for the first time, coming from MySQL. In our Rails application we have a couple of locations with SQL like so: SELECT * FROM `currency_codes` ORDER BY FIELD(code, 'GBP', 'EUR', 'BBD', 'AUD', 'CAD', 'USD') DESC, name ASC It didn't take long to discover that this is not supported/allowed in Postgresql. Does anyone know how to simulate this behaviour in Postgres or do we have to pull to sorting out into the code? Thanks Peer

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