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  • Can extension methods be applied to interfaces?

    - by Greg
    Hi, Is it possible to apply an extension method to an interface? (C# question) That is for example to achieve the following: create an ITopology interface create an extension method for this interface (e.g. public static int CountNodes(this ITopology topologyIf) ) then when creating a class (e.g. MyGraph) which implements ITopology, then it would automatically have the Count Nodes extension. This way the classes implementing the interface would not have to have a set class name to align with what was defined in the extension method.

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  • Android HelloGoogleMaps to OSMdroid (Open Street Maps)

    - by birgit
    I am trying to reproduce a working HelloGoogleMaps app in Open Street Maps - but I have trouble including the itemized overlay in OSMdroid. I have looked at several resources but I cannot figure out how to fix the error on OsmItemizedOverlay - I guess I am constructing OsmItemizedOverlay wrongly or have a mixup with OsmItemizedOverlay and ItemizedOverlay? But everything I tried to change just raised more errors... "Implicit super constructor ItemizedOverlay() is undefined. Must explicitly invoke another constructor" "Cannot make a static reference to the non-static method setMarker(Drawable) from the type OverlayItem" - I hope someone can help me getting the class definition straight? Thanks so much! package com.example.osmdroiddemomap; import java.util.ArrayList; import android.app.AlertDialog; import android.content.Context; import android.graphics.Point; import android.graphics.drawable.Drawable; import org.osmdroid.api.IMapView; import org.osmdroid.views.*; import org.osmdroid.views.overlay.*; import org.osmdroid.views.overlay.OverlayItem.HotspotPlace; public class OsmItemizedOverlay extends ItemizedOverlay<OverlayItem> { Context mContext; private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>(); //ERRORS are raised by the following 3 lines: public OsmItemizedOverlay(Drawable defaultMarker, Context context) { OverlayItem.setMarker(defaultMarker); OverlayItem.setMarkerHotspot(HotspotPlace.CENTER); mContext = context; } public void addOverlay(OverlayItem overlay) { mOverlays.add(overlay); populate(); } @Override protected OverlayItem createItem(int i) { return mOverlays.get(i); } @Override public int size() { return mOverlays.size(); } protected boolean onTap(int index) { OverlayItem item = mOverlays.get(index); AlertDialog.Builder dialog = new AlertDialog.Builder(mContext); dialog.setTitle(item.getTitle()); dialog.setMessage(item.getSnippet()); dialog.show(); return true; } @Override public boolean onSnapToItem(int arg0, int arg1, Point arg2, IMapView arg3) { // TODO Auto-generated method stub return false; } }

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  • Redirect to a web server depending on location with nginx

    - by fceruti
    Im working on a web site that has to be reachable from many countries under the same domain. Id like to know how can I receive a request with nginx (or any other static file server), and send it to different web servers depending on IP's location. I mean, what is the point on having multiple db machines on country A and B, if the server that serves you the page is chosen by round robin. Maybe theres another solution to my problem, and I would be very happy if someone can explain it to me.

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  • Best practice for setting up wsgi on root directory?

    - by Timmy
    what's the best ways to mix static files and wsgi app served on the root directory? http://code.google.com/p/modwsgi/wiki/QuickConfigurationGuide recommends setting up WSGIScriptAlias / /usr/local/www/wsgi-scripts/myapp.wsgi and alias other directories and files: Alias /robots.txt /usr/local/www/documents/robots.txt Alias /favicon.ico /usr/local/www/documents/favicon.ico Alias /media/ /usr/local/www/documents/media/ is there a cleaner way to do this?

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  • How can I share dynamic data between Applications?

    - by Ehsan
    Hi, I use CreateFileMapping, but this method does not useful,because only static structure can be shared by this method. for example this method is good for following structure: struct MySharedData { unsigned char Flag; int Buff[10]; }; but it's not good for : struct MySharedData { unsigned char Flag; int *Buff; }; would be thankful if somebody guide me on this, Thanks in advance!

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  • Redirected site files for desktop downloader

    - by Jeje
    Hi, i temporarily change place for static files on site. But this files must have access from old URL, i've create a script that make's redirect to the right place, but this files are downloading by third-part program. The problem is that program ignoring redirect. I tryed to use permanent redirecting but no success.

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  • How to securely transfer

    - by michaeltk
    I have two servers -- a backend server, and a frontend server. Every night, the backend server generates static .html files, which are then compressed into .tar format. I need to write a script that resides on the backend server that will transfer the .tar file to the frontend server, and then decompress that .tar file into to the public web directory of the frontend server. What is the standard, secure way to do this? Thanks in advance.

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  • How to check for local Wi-Fi (not just cellular connection) using iPhone SDK?

    - by Michael
    I'm currently using the following to check whether Wi-Fi is available for my application: #import <SystemConfiguration/SystemConfiguration.h> static inline BOOL addressReachable(const struct sockaddr_in *hostAddress); BOOL localWiFiAvailable() { struct sockaddr_in localWifiAddress; bzero(&localWifiAddress, sizeof(localWifiAddress)); localWifiAddress.sin_len = sizeof(localWifiAddress); localWifiAddress.sin_family = AF_INET; // IN_LINKLOCALNETNUM is defined in <netinet/in.h> as 169.254.0.0 localWifiAddress.sin_addr.s_addr = htonl(IN_LINKLOCALNETNUM); return addressReachable(&localWifiAddress); } static inline BOOL addressReachable(const struct sockaddr_in *hostAddress) { const SCNetworkReachabilityRef target = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr *)hostAddress); if (target != NULL) { SCNetworkReachabilityFlags flags = 0; const BOOL reachable = SCNetworkReachabilityGetFlags(target, &flags); CFRelease(target); return reachable && (flags & kSCNetworkFlagsReachable); } return NO; } This, however, does not return NO as it should when the iPhone is connected only to a cellular network but not a Wi-Fi network. Does anyone know how to fix this? Edit So this is what I ended up using: #import <arpa/inet.h> // For AF_INET, etc. #import <ifaddrs.h> // For getifaddrs() #import <net/if.h> // For IFF_LOOPBACK BOOL localWiFiAvailable() { struct ifaddrs *addresses; struct ifaddrs *cursor; BOOL wiFiAvailable = NO; if (getifaddrs(&addresses) != 0) return NO; cursor = addresses; while (cursor != NULL) { if (cursor -> ifa_addr -> sa_family == AF_INET && !(cursor -> ifa_flags & IFF_LOOPBACK)) // Ignore the loopback address { // Check for WiFi adapter if (strcmp(cursor -> ifa_name, "en0") == 0) { wiFiAvailable = YES; break; } } cursor = cursor -> ifa_next; } freeifaddrs(addresses); return wiFiAvailable; } Thanks "unforgiven" (and Matt Brown apparently).

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  • how to dynamically break NHibernation cascade

    - by Joe Black
    The NHibernate cascade setting in the entity mapping is static. Is there anyway to dynamically disable the "cascade" setting in code to avoid expensive cascade operation in NHiberate during a bulky data transaction? We do not want to use stored procedures or native SQL because we need to have the entity changes captured by NHibernate (audit).

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  • Java logger that automatically determines caller's class name

    - by alex
    public static Logger getLogger() { final Throwable t = new Throwable(); final StackTraceElement methodCaller = t.getStackTrace()[1]; final Logger logger = Logger.getLogger(methodCaller.getClassName()); logger.setLevel(ResourceManager.LOGLEVEL); return logger; } This method would return a logger that knows the class it's logging for. Any ideas against it?

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  • What is the Action returned by the subscribe parameter of IObservable.Create actually for?

    - by James Hay
    The method definition of IObservable.Create is: public static IObservable<TSource> Create<TSource>( Func<IObserver<TSource>, Action> subscribe ) I get that the function is called once the observable is subscribed to, where by I can then call OnNext, OnError and OnComplete on the observer. But why do I need to return an Action from the subscibe parameter and when will it actually be called?

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  • Autofac wiring question - beginner

    - by user645788
    Beginners question: Given two classes: Myclass5 and Myclass6 how can one wire up following factory method (returned as Func) such that myclass5 and myclass6 instances and IMyClass that they depend on are all retrieved via autofac (assuming that these three instances are registered). public static MyClass4 FactoryMethod(int nu) { if (nu == 1) return new MyClass5(....); if (nu == 4) return new MyClass6(....); throw new NotImplementedException(); } public abstract class MyClass4 { } public class MyClass5 : MyClass4 { public MyClass5(int nu, IMyClass a) { } } public class MyClass6 : MyClass4 { public MyClass6(int nu, IMyClass a) { } }

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  • how get fully result from Asynchronism communication?

    - by rima
    Hi all refer to these post : here1 and here2 at last I solve my problem by build a asynchronous solution,and it work well!!! but there is a problem that i face with it,now my code is like this: class MyProcessStarter { private Process process; private StreamWriter myStreamWriter; private static StringBuilder shellOutput = null; public String GetShellOutput { get { return shellOutput.ToString(); }} public MyProcessStarter(){ shellOutput = new StringBuilder(""); process = new Process(); process.StartInfo.FileName = "sqlplus"; process.StartInfo.UseShellExecute = false; process.StartInfo.CreateNoWindow = true; process.OutputDataReceived += new DataReceivedEventHandler(ShellOutputHandler); process.StartInfo.RedirectStandardInput = true; process.StartInfo.RedirectStandardOutput = true; //process.StartInfo.RedirectStandardError = true; process.Start(); myStreamWriter = process.StandardInput; process.BeginOutputReadLine(); } private static void ShellOutputHandler(object sendingProcess,DataReceivedEventArgs outLine) { if (!String.IsNullOrEmpty(outLine.Data)) shellOutput.Append(Environment.NewLine + outLine.Data); } public void closeConnection() { myStreamWriter.Close(); process.WaitForExit(); process.Close(); } public void RunCommand(string arguments) { myStreamWriter.WriteLine(arguments); myStreamWriter.Flush(); process.WaitForExit(100); Console.WriteLine(shellOutput); Console.WriteLine("============="+Environment.NewLine); process.WaitForExit(2000); Console.WriteLine(shellOutput); } } and my input is like this: myProcesStarter.RunCommand("myusername/mypassword"); Console.writeline(myProcesStarter.GetShellOutput); but take a look at my out put: SQL*Plus: Release 11.1.0.6.0 - Production on Thu May 20 11:57:38 2010 Copyright (c) 1982, 2007, Oracle. All rights reserved. ============= SQL*Plus: Release 11.1.0.6.0 - Production on Thu May 20 11:57:38 2010 Copyright (c) 1982, 2007, Oracle. All rights reserved. Enter user-name: Connected to: Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options as u see the output for run a function is not same in different time!So now would you do me a faver and help me that how I can wait until all the output done in other mean how I can customize my process to wait until output finishing ?? because I want to write a sqlcompiler so I need the exact output of shell. plz help me soon.thanxxxxxxxxxxxx :X

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  • addchild not displaying content

    - by Rajeev
    In the following code i dont have any error but why is that the addchild(video); i.e, the the video captured by webcam is not displayed <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> <mx:Script> <![CDATA[ import org.com.figurew; import mx.controls.Button; import mx.controls.Alert; import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public function addBody():void { var ret:Number = figurew.getInstance().getparam(); if( ret == 1) { Alert.show("Camera detected"); } if(ret == 0) { Alert.show("No camera detected"); } var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(30, 40); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } ]]> </mx:Script> <mx:Button label="Test camera" click="addBody();" x="99" y="116"/> </mx:Application > figurew.as package org.com { import flash.display.InteractiveObject; import flash.display.Sprite; import flash.media.*; import flash.net.*; public class figurew extends Sprite { public function figurew() { //getparam(); var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); } else { trace("No Camera Detected"); } } public function getparam():Number { var cam:Camera = Camera.getCamera(); if(cam != null) { cam.setMode(640, 480, 30); var video:Video = new Video(300, 450); video.attachCamera(cam); addChild(video); return 1; } else { return 0; trace("No Camera Detected"); } } private static var _instance:figurew = null; public static function getInstance():cldAS { if(_instance == null) { trace("No instance found"); _instance = new cldAS(); } return _instance; } } }

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  • Loading an NSArray on iPhone from a dynamic data base url in PHP or ASP

    - by Brad
    I have a database online that I would like to be able to load into an NSArray in my app. I can use arrayWithContentsOfURL with a static file, but I really need to go to a url that generates a plist file from the database and loading it into the array. I can use ASP or PHP. I tried setting the response type to "text/xml", but that doesn't help. Any thoughts?

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  • Java: initialization problem, cannot print "assigned" values from arrayList

    - by HH
    $ javac ArrayListTest.java $ java ArrayListTest $ cat ArrayListTest.java import java.io.*; import java.util.*; public class ArrayListTest{ public static void main(String[] args) { try { String hello ="oeoaseu oeu hsoae sthoaust hoaeut hoasntu"; ArrayList<String> appendMe = null; for(String s : hello.split(" ")) appendMe.add(s+" "); for(String s : appendMe) System.out.println(s); //WHY DOES IT NOT PRINT? }catch(Exception e){ } } }

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  • DNS resolve without depending on router for asterisk system

    - by john
    Hello, Basically I have a Debian box running asterisk assigned an IP via DHCP with host-name XXX. My windows browser can resolve the host-name but if I use host-name in X-Lite or my SPA922 phone it fails to resolve. Is there any way of getting this to work without depending on the router or assigning a static IP (request is to make it portable). I was thinking zero-conf but am unsure (box has limited HDD too). Any help is most appreciated.

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  • How to configure multiple web site with django and tornado?

    - by mapcuk
    On my VDS I use nginx, django and tornado. I had just one project, Now i gonna deploy another one project with a different domain name. I want to use different databases and folders. I know how to configure nginx for serving static resourses , but what about tornado? Should i run separeted instance of tornado for each project or is there any better solution?

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