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  • A layout for maven project with a patched dependency

    - by zamza
    Suppose, I have an opensource project that depends on some library, that must be patched in order to fix some issues. How do I do that? My ideas are: Have that library sources set up as a module, keep them in my vcs. Pros: simple. Cons: some third party sources in my repo, might slow down build process, hard to find a patched place (though can be fixed in README) Have a module, like in 1, but keep patched source files only, compile them with orignal library jar in classpath and somehow replace *.class files in library jar on build. Pros: builds faster, easy to find patched places. Cons: hard to configure, that jar hackery is non-obvious (library jar in repository and in my project assembly would be different) Keep patched *.class files in main/resources, and replace on packaging like in 2). Pros: almost none. Cons: binaries in vcs, hard to recompile a patched class as patch compilation is not automated. One nice solution is to create a distinct project with patched library sources, and deploy it on local/enterprise repository with -patched qualifier. But that would not fit for an opensourced project that is meant to be easily buildable by anyone who checks out its sources. Or should I just say "and also, before you build my project, please check out that stuff and run mvn install".

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  • Java - Trying to log into website with invalid ssl certificate using httpclient

    - by PCBEEF
    I'm trying to log into site with invalid ssl certificate and I have the following code. I bypass the the invalid cert by using my all certificate and then bypass the invalid Hostname by using hostnameverifier. However, the hostnameverifier does not seem to work and I still get the error message javax.net.ssl.SSLException: hostname in certificate didn't match: The code is: public static void main(String[] args) { TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; } public void checkClientTrusted( java.security.cert.X509Certificate[] certs, String authType) { } public void checkServerTrusted( java.security.cert.X509Certificate[] certs, String authType) { } } }; HostnameVerifier hv = new HostnameVerifier() { public boolean verify(String urlHostName, SSLSession session) { System.out.println("Warning: URL Host: "+urlHostName+" vs. "+session.getPeerHost()); return true; } }; try { SSLContext sc = SSLContext.getInstance("SSL"); sc.init(null, trustAllCerts, new java.security.SecureRandom()); HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); HttpsURLConnection.setDefaultHostnameVerifier(hv); } catch (Exception e) { } try { DefaultHttpClient httpclient = new DefaultHttpClient(); HttpContext localContext = new BasicHttpContext(); List<NameValuePair> formparams = new ArrayList<NameValuePair>(); formparams.add(new BasicNameValuePair("username", "user")); formparams.add(new BasicNameValuePair("password", "pword")); UrlEncodedFormEntity entity; entity = new UrlEncodedFormEntity(formparams, "UTF-8"); HttpPost httppost = new HttpPost("https://www.mysite.com/"); httppost.setEntity(entity); HttpResponse response = httpclient.execute(httppost, localContext); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }

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  • understanding func<T, TResult> C#

    - by Satish Raj
    Hi I am trying to refactor some of my code to use Func I have created a sample to try to understand how it works but I am getting compilation error. In the e.g. below when I am trying to access the parameter attributes or return the return value the compiler complain. Clarifications please. using System; namespace chsarp { class Program { static void Main(string[] args) { ParamInput input = new ParamInput(); input.ReservationID = 10; Test testMethod = new Test(); Func<ParamInput, ReservationResult> methodToInvoke = testMethod.GetStatus; ReservationResult result = TestFn(methodToInvoke, input); } static Result TestFn<Param, Result>(Func<Param, Result> methodToInvoke, Param parameter) where Result : new() { Result result = new Result(); try { result = methodToInvoke(parameter); } catch (Exception exception) { result.status = string.Format("Error-{0} during reserving {1}", parameter.ReservationID, exception.Message); } return result; } } class Test { public ReservationResult GetStatus(ParamInput msg) { ReservationResult result = new ReservationResult(); result.status = string.Format("The ReservationID-{0}", msg.ReservationID); return result; } } class ParamInput { public int ReservationID { get; set; } } class ReservationResult { public string status { get; set; } } }

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  • Android - Launch Intent within ExpandableListView

    - by Ryan
    Hello, I'm trying to figure out if it is possible to launch an intent within an ExpandableListView. Basically one of the "Groups" is Phone Number and it's child is the number. I want the user to be able to click it and have it automatically call that number. Is this possible? How? Here is my code to populate the ExpandableListView using a Map called "data". ExpandableListView myList = (ExpandableListView) findViewById(R.id.myList); //ExpandableListAdapter adapter = new MyExpandableListAdapter(data); List<Map<String, String>> groupData = new ArrayList<Map<String, String>>(); List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); Iterator it = data.entrySet().iterator(); while (it.hasNext()) { //Get the key name and value for it Map.Entry pair = (Map.Entry)it.next(); String keyName = (String) pair.getKey(); String value = pair.getValue().toString(); //Add the parents -- aka main categories Map<String, String> curGroupMap = new HashMap<String, String>(); groupData.add(curGroupMap); curGroupMap.put("NAME", keyName); //Add the child data List<Map<String, String>> children = new ArrayList<Map<String, String>>(); Map<String, String> curChildMap = new HashMap<String, String>(); children.add(curChildMap); curChildMap.put("NAME", value); childData.add(children); } // Set up our adapter mAdapter = new SimpleExpandableListAdapter( mContext, groupData, R.layout.exp_list_parent, new String[] { "NAME", "IS_EVEN" }, new int[] { R.id.rowText1, R.id.rowText2 }, childData, R.layout.exp_list_child, new String[] { "NAME", "IS_EVEN" }, new int[] { R.id.rowText3, R.id.rowText4} ); myList.setAdapter(mAdapter);

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  • The LoadLibraryA method returns error code 1114 (ERROR_DLL_INIT_FAILED) after more than 1000 cycles

    - by Javier
    Hi, I'm programing on C++, I'm using Visual Studio 2008, Windows XP, and I have the following problem: My application, that is a DLL that can be used from Python, loads an external dll, uses the required methods, and then unloads this external Dll. It's working properly, but after more than 1000 cycles the method "LoadLibraryA" returns a NULL reference. The main steps are: HINSTANCE h = NULL; h = LoadLibraryA(dllfile.c_str()); DWORD dw = GetLastError(); The error got is: ERROR_DLL_INIT_FAILED 1114 (0x45A) A dynamic link library (DLL) initialization routine failed. The Dll is unloaded by using the following: FreeLibrary(mDLL); mDLL = NULL; Where mDLL is defined like this: HINSTANCE mDLL; First alternative tried: Just load the Dll only once, and unloaded it when the application ends. This fix the problem but introduces a new one. When the application ends, instead of first executing the DllMain method of my applicaion, wich unloads the external DLL, is executing first the DllMain method of the other Dll. This cause the following error because my application is trying to unload a Dll that was unload by itself previously. "Unhandled exception at 0x04a00d07 (DllName.DLL) in Python.exe: 0xC0000005: Access violation reading location 0x0000006b". Any suggestion will be welcomed. Thanks in advance. Regards.

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  • Javascript/Greasemonkey: search for something then set result as a value

    - by thewinchester
    Ok, I'm a bit of a n00b when it comes to JS (I'm not the greatest programmer) so please be gentle - specially if my questions been asked already somewhere and I'm too stupid to find the right answer. Self deprecation out of the way, let's get to the question. Problem There is a site me and a large group of friends frequently use which doesn't display all the information we may like to know - in this case an airline bookings site and the class of travel. While the information is buried in the code of the page, it isn't displayed anywhere to the user. Using a Greasemonkey script, I'd like to liberate this piece of information and display it in a suitable format. Here's the psuedocode of what I'm looking to do. Search dom for specified element define variables Find a string of text If found Set result to a variable Write contents to page at a specific location (before a specified div) If not found Do nothing I think I've achieved most of it so far, except for the key bits of: Searching for the string: The page needs to search for the following piece of text in the page HEAD: mileageRequest += "&CLASSES=S,S-S,S-S"; The Content I need to extract and store is between the second equals (=) sign and the last comma ("). The contents of this area can be any letter between A-Z. I'm not fussed about splitting it up into an array so I could use the elements individually at this stage. Writing the result to a location: Taking that found piece of text and writing it to another location. Code so far This is what I've come up so far, with bits missing highlighted. buttons = document.getElementById('buttons'); ''Search goes here var flightClasses = document.createElement("div"); flightClasses.innerHTML = '<div id="flightClasses"> ' + '<h2>Travel classes</h2>' + 'For the above segments, your flight classes are as follows:' + 'write result here' + '</div>'; main.parentNode.insertBefore(flightClasses, buttons); If anyone could help me, or point me in the right direction to finish this off I'd appreciate it.

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  • How to program a neural network for chess?

    - by marco92w
    Hello! I want to program a chess engine which learns to make good moves and win against other players. I've already coded a representation of the chess board and a function which outputs all possible moves. So I only need an evaluation function which says how good a given situation of the board is. Therefore, I would like to use an artificial neural network which should then evaluate a given position. The output should be a numerical value. The higher the value is, the better is the position for the white player. My approach is to build a network of 385 neurons: There are six unique chess pieces and 64 fields on the board. So for every field we take 6 neurons (1 for every piece). If there is a white piece, the input value is 1. If there is a black piece, the value is -1. And if there is no piece of that sort on that field, the value is 0. In addition to that there should be 1 neuron for the player to move. If it is White's turn, the input value is 1 and if it's Black's turn, the value is -1. I think that configuration of the neural network is quite good. But the main part is missing: How can I implement this neural network into a coding language (e.g. Delphi)? I think the weights for each neuron should be the same in the beginning. Depending on the result of a match, the weights should then be adjusted. But how? I think I should let 2 computer players (both using my engine) play against each other. If White wins, Black gets the feedback that its weights aren't good. So it would be great if you could help me implementing the neural network into a coding language (best would be Delphi, otherwise pseudo-code). Thanks in advance!

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  • Migrating complex SVN branch hierarchy to Mercurial

    - by Christian Hang
    Our team has been using SVN for managing an application of decent size and over time a rather complex hierarchy of branches and tags has built up, which is following the basic standard layout for SVN repositories, but is more nested: |-trunk |-branches | |-releases | | |-releaseA | | `-releaseB | `-features | |-featureX | `-featureY |-tags |-releaseA | |-beta | `-RTP `-releaseB |-beta `-RTP (The feature branches are obviously temporary branches but we have to take them into consideration as it won't be feasible to close all of them at once in the near future) For several reasons but primarily because merges have been becoming an increasing pain, we are considering to switch to Mercurial. The main problem we are currently facing is migrating the existing code base without losing our history. I've tried several migration tools (e.g., yasvn2hg, hg convert and svn2hg) with yasvn2hg being the most promising, but none of them seem to be able to deal with nested hierarchies but they all assume that branches and tags are organized in one flat directory respectively. The choice between named branches or clones as the conversion target of old SVN branches is not a limiting factor in this case, as either solution would be appreciated. We are currently experimenting with both options and how they would fit into our current processes but haven't decided on one yet. I'd obviously be interested in recommendations or experiences with similar setups concerning that issue as well. So, what is the best way to convert a nested SVN branch hierarchy like this to Mercurial? Converting one branch at a time into a separate repository would be quite annoying and I am not sure if that would be the right approach in the first place, depending on how the tools handle historic merges and need to be aware of all other branches?

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  • Rle Encoding...What's the wrong?

    - by FILIaS
    I'm trying to make a Rle Encoder Programme.I read the way it works on notes on net. And i tried to fix my code! Regardless I think that the structure and logic of code are right,the code doesnt work! It appears some strange 'Z' as it runs. I really cant find what;s wrong! Could u please give me a piece of advice? Thanx in advance... #include <stdio.h> int main() { int count; unsigned char currChar,prevChar=EOF; while(currChar=getchar() != EOF) { if ( ( (currChar='A')&&(currChar='Z') ) || ( (currChar='a')&&(currChar='z') ) ) { printf("%c",currChar); if(prevChar==currChar) { count=0; currChar=getchar(); while(currChar!='EOF') { if (currChar==prevChar) count++; else { if(count<=9) printf("%d%c",count,prevChar); else { printf("%d%c",reverse(count),prevChar); } prevChar=currChar; break; } } } else prevChar=currChar; if(currChar=='EOF') { printf("%d",count); break; } } else { printf("Error Message:Only characters are accepted! Please try again! False input!"); break; } } return 0; } int reverse(int x) { int piliko,ypoloipo,r=0; x=(x<0)?-x:x; while (x>0) { ypoloipo=x%10; piliko=x/10; r=10*r+ypoloipo; x=piliko; } printf("%d",r); return 0; }

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  • Calling up DockPanel-Suite's "AutoHidden" DockContent programmatically

    - by Lockszmith
    I am having trouble causing an 'autohide' dock to appear programmatically. Couldn't find any answer around the net, though the following SO Question suggested that .Show() should have done the trick I've tried this on the latest NuGet version of the code. My test code is below. Anyone know how to do it? or what I'm doing wrong? My test Code Create a simple Visual Studio Windows Form application, and replace the main form's source file content with this code: using System; using System.Windows.Forms; using dps = WeifenLuo.WinFormsUI.Docking; namespace testDockPanel { public partial class Form1 : Form { private dps.DockPanel dockPanel; private dps.DockContent dc; private Control innerCtrl; public Form1() { InitializeComponent(); dockPanel = new dps.DockPanel(); dockPanel.Dock = DockStyle.Fill; dockPanel.DocumentStyle = dps.DocumentStyle.DockingWindow; toolStripContainer1.ContentPanel.Controls.Add(dockPanel); dc = new dps.DockContent(); dc.DockPanel = dockPanel; dc.DockState = dps.DockState.DockRightAutoHide; innerCtrl = new WebBrowser() { Dock = DockStyle.Fill }; dc.Controls.Add( innerCtrl ); // This SHOULD show the autohide-dock, but NOTHING happens. dc.Show(); } } }

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  • Android NDK jni problem

    - by Donal Rafferty
    I have started teaching myself about the Android NDK and I have followed this example here - http://marakana.com/forums/android/android_examples/49.html I have followed the steps perfectly but when I run the application I get the following error: Trying to load lib /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 Added shared lib /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 No JNI_OnLoad found in /data/data/com.cnetworks.ndk/lib/libndk_demo.so 0x435c2d20 +++ not scanning '/system/lib/libwebcore.so' for 'hello' (wrong CL) +++ not scanning '/system/lib/libmedia_jni.so' for 'hello' (wrong CL) WARN/dalvikvm(5191): No implementation found for native Lcom/cnetworks/ndk/NativeLib;.hello ()Ljava/lang/String; Here is the java code, nativeLib.hello() is causing the problem. public class NDKdemo2 extends Activity { NativeLib nativeLib; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); nativeLib = new NativeLib(); String helloText = nativeLib.hello(); // Update the UI TextView outText = (TextView) findViewById(R.id.textOut); outText.setText(helloText); } } Has anyone had the same problem before and able to tell me whats wrong?

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  • How can i handle a form submit using REAL OOP in PHP

    - by Lorence
    Im used to java and creating UML.. and i was wondering how can PHP be OOP, the objects live only until you make a request.. then they destroy, so if im using a database is useless to create a class and add the members (variables) to the class, they will be useless.. i cant pass the main system object from one page to another, or similar so how can PHP be compare to jave? you never do OOP .. i mean REAL OOP.. not creating classes , in fact your index will be a procedural file with some object instance and then ? how about if i make a html form and i want to submit the data.. i have to call a file which is not a class is a php procedural file were i grab the submited data with POST, from that file you will instance a class and do some logic there.. but for me thats not pure OOP.. can somebody point me to the right way of OOP using a form submit example ? Thanks!

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  • Android Client : Web service - what's the correct SOAP_ACTION, METHOD_NAME, NAMESPACE, URL I should

    - by Hubert
    if I want to use the following Web service (help.be is just an example, let's say it does exist): http://www.help.be/webservice/webservice_help.php (it's written in PHP=client's choice, not .NET) with the following WSDL : <?xml version="1.0" encoding="UTF-8"?> <definitions xmlns="http://schemas.xmlsoap.org/wsdl/" name="webservice_help" targetNamespace="http://www.help.be/webservice/webservice_help.php" xmlns:tns="http://www.help.be/webservice/webservice_help.php" xmlns:impl="http://www.help.be/webservice/webservice_help.php" xmlns:xsd1="http://www.help.be/webservice/webservice_help.php" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"> <portType name="webservice_helpPortType"> <operation name="webservice_help"> <input message="tns:Webservice_helpRequest"/> </operation> <operation name="getLocation" parameterOrder="input"> <input message="tns:GetLocationRequest"/> <output message="tns:GetLocationResponse"/> </operation> <operation name="getStationDetail" parameterOrder="input"> <input message="tns:GetStationDetailRequest"/> <output message="tns:GetStationDetailResponse"/> </operation> <operation name="getStationList" parameterOrder="input"> <input message="tns:GetStationListRequest"/> <output message="tns:GetStationListResponse"/> </operation> </portType> <binding name="webservice_helpBinding" type="tns:webservice_helpPortType"> <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/> <operation name="webservice_help"> <soap:operation soapAction="urn:webservice_help#webservice_helpServer#webservice_help"/> <input> <soap:body use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </input> </operation> <operation name="getLocation"> <soap:operation soapAction="urn:webservice_help#webservice_helpServer#getLocation"/> <input> <soap:body parts="input" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </input> <output> <soap:body parts="return" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </output> </operation> <operation name="getStationDetail"> <soap:operation soapAction="urn:webservice_help#webservice_helpServer#getStationDetail"/> <input> <soap:body parts="input" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </input> <output> <soap:body parts="return" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </output> </operation> <operation name="getStationList"> <soap:operation soapAction="urn:webservice_help#webservice_helpServer#getStationList"/> <input> <soap:body parts="input" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </input> <output> <soap:body parts="return" use="encoded" namespace="http://www.help.be/webservice/webservice_help.php" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/> </output> </operation> </binding> <message name="Webservice_helpRequest"/> <message name="GetLocationRequest"> <part name="input" type="xsd:array"/> </message> <message name="GetLocationResponse"> <part name="return" type="xsd:array"/> </message> <message name="GetStationDetailRequest"> <part name="input" type="xsd:array"/> </message> <message name="GetStationDetailResponse"> <part name="return" type="xsd:string"/> </message> <message name="GetStationListRequest"> <part name="input" type="xsd:array"/> </message> <message name="GetStationListResponse"> <part name="return" type="xsd:string"/> </message> <service name="webservice_helpService"> <port name="webservice_helpPort" binding="tns:webservice_helpBinding"> <soap:address location="http://www.help.be/webservice/webservice_help.php"/> </port> </service> </definitions> What is the correct SOAP_ACTION, METHOD_NAME, NAMESPACE, URL I should use below ? I've tried with this : public class Main extends Activity { /** Called when the activity is first created. */ private static final String SOAP_ACTION_GETLOCATION = "getLocation"; private static final String METHOD_NAME_GETLOCATION = "getLocation"; private static final String NAMESPACE = "http://www.help.be/webservice/"; private static final String URL = "http://www.help.be/webservice/webservice_help.php"; TextView tv; @SuppressWarnings("unchecked") @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); tv = (TextView)findViewById(R.id.TextView01); // -------------------------------------------------------------------------------------- SoapObject request_location = new SoapObject(NAMESPACE, METHOD_NAME_GETLOCATION); request_location.addProperty("login", "login"); // -> string required request_location.addProperty("password", "password"); // -> string required request_location.addProperty("serial", "serial"); // -> string required request_location.addProperty("language", "fr"); // -> string required (available « fr,nl,uk,de ») request_location.addProperty("keyword", "Braine"); // -> string required // -------------------------------------------------------------------------------------- SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); //soapEnvelope.dotNet = true; // don't forget it for .NET WebServices ! soapEnvelope.setOutputSoapObject(request_location); AndroidHttpTransport aht = new AndroidHttpTransport(URL); try { aht.call(SOAP_ACTION_GETLOCATION, soapEnvelope); // Get the SAOP Envelope back and then extract the body SoapObject resultsRequestSOAP = (SoapObject) soapEnvelope.bodyIn; Vector XXXX = (Vector) resultsRequestSOAP.getProperty("GetLocationResponse"); int vector_size = XXXX.size(); Log.i("Hub", "testat="+vector_size); tv.setText("OK"); } catch(Exception E) { tv.setText("ERROR:" + E.getClass().getName() + ": " + E.getMessage()); Log.i("Hub", "Exception E"); Log.i("Hub", "E.getClass().getName()="+E.getClass().getName()); Log.i("Hub", "E.getMessage()="+E.getMessage()); } // -------------------------------------------------------------------------------------- } } I'm not sure of the SOAP_ACTION, METHOD_NAME, NAMESPACE, URL I have to use? because soapAction is pointing to a URN instead of a traditional URL and it's PHP and not .NET ... also, I'm not sure if I have to use request_location.addProperty("login", "login"); of request_location.addAttribute("login", "login"); ? = <message name="GetLocationRequest"> <part name="input" type="xsd:array"/> What would you say ? Txs for your help. H. EDIT : Here is some code working in PHP - I simply want to have the same but in Android/JAVA : <?php ini_set("soap.wsdl_cache_enabled", "0"); // disabling WSDL cache $request['login'] = 'login'; $request['password'] = 'password'; $request['serial'] = 'serial'; $request['language'] = 'fr'; $client= new SoapClient("http://www.test.be/webservice/webservice_test.wsdl"); print_r( $client->__getFunctions()); ?><hr><h1>getLocation</h1> <h2>Input:</h2> <? $request['keyword'] = 'Bruxelles'; print_r($request); ?><h2>Result</h2><? $result = $client->getLocation($request); print_r($result); ?>

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  • C# average function for large numbers without overflow exception

    - by Ron Klein
    .NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; class Program { static void Main(string[] args) { var items = new long[] { long.MaxValue - 100, long.MaxValue - 200, long.MaxValue - 300 }; try { var avg = items.Average(); Console.WriteLine(avg); } catch (OverflowException ex) { Console.WriteLine("can't calculate that!"); } Console.ReadLine(); } } Obviously, the mathematical result is 9223372036854775607 (long.MaxValue - 200), but I get an exception there. This is because the implementation (on my machine) to the Average extension method, as inspected by .NET Reflector is: public static double Average(this IEnumerable<long> source) { if (source == null) { throw Error.ArgumentNull("source"); } long num = 0L; long num2 = 0L; foreach (long num3 in source) { num += num3; num2 += 1L; } if (num2 <= 0L) { throw Error.NoElements(); } return (((double) num) / ((double) num2)); } I know I can use a BigInt library (yes, I know that it is included in .NET Framework 4.0, but I'm tied to 3.5). But I still wonder if there's a pretty straight forward implementation of calculating the average of integers without an external library. Do you happen to know about such implementation? Thanks!!

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  • Why is my jQuery jEditable, edit-in-place callback not working?

    - by unknowndomain
    I am using a jQuery jEditable edit-in-place field but when the JSON function returns and I try to return a value from my edit-in-place callback all I get is a flash of You can see this here... http://clareshilland.unknowndomain.co.uk/ Hit Ctrl+L to login... Username: stackoverflow Password: jquery Although you can see the script in /script.js here is the main code exerpt... $('#menu li a').editable(edit_menu_item, { cssclass: 'editable' }); Here is the callback: function edit_menu_item(value, settings) { $.ajax({ type : "POST", cache : false, url : 'ajax/menu/edit-category.php', dataType: 'json', data : { 'id': this.id, 'value': value }, success : function(data) { if (data.status == 'ok') { alert('ok'); return data.title; } else { alert('n/ok'); return this.revert; } }}); } The JSON code is here: ajax/menu.edit-category.php The edit-in-place is is on the menu which also has a jQuery sortable on it. Single click to edit. Enter to save, and it stores the data but does not update it on the edit-in-place field. Please help stackoverflow, I have been working on this for a mega age. Thanks in advance!

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  • Compile time Meta-programming, with string literals.

    - by Hassan Syed
    I'm writing some code which could really do with some simple compile time metaprogramming. It is common practise to use empty-struct tags as compile time symbols. I need to decorate the tags with some run-time config elements. static variables seem the only way to go (to enable meta-programming), however static variables require global declarations. to side step this Scott Myers suggestion (from the third edition of Effective C++), about sequencing the initialization of static variables by declaring them inside a function instead of as class variables, came to mind. So I came up with the following code, my hypothesis is that it will let me have a compile-time symbols with string literals use-able at runtime. I'm not missing anything I hope. template<class Instance> class TheBestThing { public: void set_name(const char * name_in) { get_name() = std::string(name_in); } void set_fs_location(const char * fs_location_in) { get_fs_location() = std::string(fs_location_in); } std::string & get_fs_location() { static std::string fs_location; return fs_location; } std::string & get_name() { static std::string name; return name; } }; struct tag {}; int main() { TheBestThing<tag> x; x.set_name("xyz"); x.set_fs_location("/etc/lala"); ImportantObject<x> SinceSlicedBread; }

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  • What's slowing for loops/assignment vs. C?

    - by Lee
    I have a collection of PHP scripts that are extremely CPU intensive, juggling millions of calculations across hundreds of simultaneous users. I'm trying to find a way to speed up the internals of PHP variable assignment, and looping sequences vs C. Although PHP is obviously loosely typed, is there any way/extension to specifically assign type (assign, not cast, which seems even more expensive) in a C-style fashion? Here's what I mean. This is some dummy code in C: #include <stdio.h> int main() { unsigned long add=0; for(unsigned long x=0;x<100000000;x++) { add = x*59328409238; } printf("x is %ld\n",add); } Pretty self-explanatory -- it loops 100 million times, multiples each iteration by an arbitrary number of some 59 billion, assigns it to a variable and prints it out. On my Macbook, compiling it and running it produced: lees-macbook-pro:Desktop lee$ time ./test2 x is 5932840864471590762 real 0m0.266s user 0m0.253s sys 0m0.002s Pretty darn fast! A similar script in PHP 5.3 CLI... <?php for($i=0;$i<100000000;$i++){ $a=$i*59328409238; } echo $a."\n"; ?> ... produced: lees-macbook-pro:Desktop lee$ time /Applications/XAMPP/xamppfiles/bin/php test3.php 5.93284086447E+18 real 0m22.837s user 0m22.110s sys 0m0.078s Over 22 seconds vs 0.2! I realize PHP is doing a heck of a lot more behind the scenes than this simple C program - but is there any way to make the PHP internals to behave more 'natively' on primitive types and loops?

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  • posting nutch data into a BASIC auth secured Solr instance

    - by mlathe
    Hi. I've secured a solr instance using BASIC auth, kind of how it is shown here: http://blog.comtaste.com/2009/02/securing_your_solr_server_on_t.html Now i'm trying to update my batch processes to push data into the authenticated instance. The ones using "curl" are easy, but i also have a Nutch crawl that uses the "solrindex" command to push data into Solr. When i do that i get this error: 2010-02-22 12:09:28,226 INFO auth.AuthChallengeProcessor - basic authentication scheme selected 2010-02-22 12:09:28,229 INFO httpclient.HttpMethodDirector - No credentials available for BASIC 'Tomcat Manager Application'@ninja:5500 2010-02-22 12:09:28,236 WARN mapred.LocalJobRunner - job_local_0001 org.apache.solr.common.SolrException: Unauthorized Unauthorized request: http://ninja:5500/solr/foo/update?wt=javabin&version=2.2 at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:343) at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:183) at org.apache.solr.client.solrj.request.UpdateRequest.process(UpdateRequest.java:217) at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:48) at org.apache.nutch.indexer.solr.SolrWriter.close(SolrWriter.java:69) at org.apache.nutch.indexer.IndexerOutputFormat$1.close(IndexerOutputFormat.java:48) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:447) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:170) 2010-02-22 12:09:29,134 FATAL solr.SolrIndexer - SolrIndexer: java.io.IOException: Job failed! at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1232) at org.apache.nutch.indexer.solr.SolrIndexer.indexSolr(SolrIndexer.java:73) at org.apache.nutch.indexer.solr.SolrIndexer.run(SolrIndexer.java:95) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at org.apache.nutch.indexer.solr.SolrIndexer.main(SolrIndexer.java:104) Apparently nutch uses SolrJ to push the content, and after going through the solrj code, it's clear that it uses commons-httpclient without providing a way to set the credentials. Here are my question(s) Is this possible to do? ie push from nutch into a BASIC auth secured Solr instance? Is it possible to tell commons-httpclient about a credential without explicitly doing an _httpclient.getState().setCredentials(...)? Anyother ideas? One idea i had was to use an IPfiltering Valve for just the "update" Solr webservices. That would mean you could only make an update call from certain nodes. Thanks

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  • ng-grid checkbox with filtering

    - by WilliamLou
    If I have a huge table with ng-grid, and I enabled a checkbox to select all. Is there a way for me to combine this selectAll feature with the filtering box. I mean when I filter out the rows, I want to click the checkbox so that the rows filtered will be all selected; once I clean out filter, those selectedRows are still left so that I can add more rows into it with other filters. I created a Plunker code template here. copy code here as well: // main.js var app = angular.module('myApp', ['ngGrid']); app.controller('MyCtrl', function($scope) { $scope.mySelections = []; $scope.myData = [{name: "Moroni", age: 50}, {name: "Tiancum", age: 43}, {name: "Jacob", age: 27}, {name: "Nephi", age: 29}, {name: "Enos", age: 34}, {name: "Moroni", age: 50}, {name: "Tiancum", age: 43}, {name: "Jacob", age: 27}, {name: "Nephi", age: 29}, {name: "Enos", age: 34}, {name: "Moroni", age: 50}, {name: "Tiancum", age: 43}, {name: "Jacob", age: 27}, {name: "Nephi", age: 29}, {name: "Enos", age: 34}, {name: "Moroni", age: 50}, {name: "Tiancum", age: 43}, {name: "Jacob", age: 27}, {name: "Nephi", age: 29}, {name: "Enos", age: 34},]; $scope.filterOptions = { filterText: '' }; $scope.gridOptions = { data: 'myData', checkboxHeaderTemplate: '<input class="ngSelectionHeader" type="checkbox" ng-model="allSelected" ng-change="toggleSelectAll(allSelected)"/>', showSelectionCheckbox: true, selectWithCheckboxOnly: false, selectedItems: $scope.mySelections, multiSelect: true, filterOptions: $scope.filterOptions }; });

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  • How do I use XML prefixes in C#?

    - by Andrew Mock
    EDIT: I have now published my app: http://pastebin.com/PYAxaTHU I was trying to make console-based application that returns my temperature. using System; using System.Xml; namespace GetTemp { class Program { static void Main(string[] args) { XmlDocument doc = new XmlDocument(); doc.LoadXml(downloadWebPage( "http://www.andrewmock.com/uploads/example.xml" )); XmlNamespaceManager man = new XmlNamespaceManager(doc.NameTable); man.AddNamespace("aws", "www.aws.com/aws"); XmlNode weather = doc.SelectSingleNode("aws:weather", man); Console.WriteLine(weather.InnerText); Console.ReadKey(false); } } } Here is the sample XML: <aws:weather xmlns:aws="http://www.aws.com/aws"> <aws:api version="2.0"/> <aws:WebURL>http://weather.weatherbug.com/WA/Kenmore-weather.html?ZCode=Z5546&Units=0&stat=BOTHL</aws:WebURL> <aws:InputLocationURL>http://weather.weatherbug.com/WA/Kenmore-weather.html?ZCode=Z5546&Units=0</aws:InputLocationURL> <aws:station requestedID="BOTHL" id="BOTHL" name="Moorlands ES" city="Kenmore" state=" WA" zipcode="98028" country="USA" latitude="47.7383346557617" longitude="-122.230278015137"/> <aws:current-condition icon="http://deskwx.weatherbug.com/images/Forecast/icons/cond024.gif">Mostly Cloudy</aws:current-condition> <aws:temp units="&deg;F">40.2</aws:temp> <aws:rain-today units=""">0</aws:rain-today> <aws:wind-speed units="mph">0</aws:wind-speed> <aws:wind-direction>WNW</aws:wind-direction> <aws:gust-speed units="mph">5</aws:gust-speed> <aws:gust-direction>NW</aws:gust-direction> </aws:weather> I'm just not sure how to use XML prefixes correctly here. What is wrong with this?

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  • jQuery - .Ready fires on div tag not in the page

    - by Anders Juul
    Dear all, I have implemented below function in a separate .js script file which I load in my main page (Asp.net mvc). The call back to server is rather costly but ok if specifically requested on the sub-page / content page on which my div tag needs to be filled. My problem is that the code runs on every page, including pages where the div tag is not present. How can I remedy my code? Any comments welcome, Thanks, Anders, Denmark jQuery("divStatWrapper").ready(function() { jQuery.getJSON("/Statistics/GetPointsDevelopment", function(json) { jQuery("#divStatWrapper #divStatLoading").fadeOut(1000); var jsonPoints = new Array(); jQuery.each(json.Points, function(i, item) { jsonPoints.push(item.PlayerPoints ); }); jsonPoints.reverse(); var api = new jGCharts.Api(); jQuery('<img>') .attr('src', api.make({ data : jsonPoints, type : "lc", size : "600x250" })) .appendTo("#divStatContents"); jQuery("#divStatWrapper #divStatContents").fadeIn(1000); }); });

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  • Linq IQueryable variables

    - by kevinw
    Hi i have a function that should return me a string but what is is doing is bringing me back the sql expression that i am using on the database what have i done wrong public static IQueryable XMLtoProcess(string strConnection) { Datalayer.HameserveDataContext db = new HameserveDataContext(strConnection); var xml = from x in db.JobImports where x.Processed == false select new { x.Content }; return xml; } this is the code sample this is what i should be getting back <PMZEDITRI TRI_TXNNO="11127" TRI_TXNSEQ="1" TRI_CODE="600" TRI_SUBTYPE="1" TRI_STATUS="Busy" TRI_CRDATE="2008-02-25T00:00:00.0000000-00:00" TRI_CRTIME="54540" TRI_PRTIME="0" TRI_BATCH="" TRI_REF="" TRI_CPY="main" C1="DEPL" C2="007311856/001" C3="14:55" C4="CUB2201" C5="MR WILLIAM HOGG" C6="CS12085393" C7="CS" C8="Blocked drain" C9="Scheme: CIS Home Rescue edi tests" C10="MR WILLIAM HOGG" C11="74 CROMARTY" C12="OUSTON" C13="CHESTER LE STREET" C14="COUNTY DURHAM" C15="" C16="DH2 1JY" C17="" C18="" C19="" C20="" C21="CIS" C22="0018586965 ||" C23="BD" C24="W/DE/BD" C25="EX-DIRECTORY" C26="" C27="/" C28="CIS Home Rescue" C29="CIS Home Rescue Plus Insd" C30="Homeserve Claims Management Ltd|Upon successful completion of this repair the contractor must submit an itemised and costed Homeserve Claims Management Ltd Job Sheet." N1="79.9000" N2="68.0000" N3="11.9000" N4="0" N5="0" N6="0" D1="2008-02-25T00:00:00.0000000-00:00" T2="EX-DIRECTORY" T4="Blocked drain" TRI_SYSID="9" TRI_RETRY="3" TRI_RETRYTIME="0" /> can anyone help me please

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  • cpptask ordering of static libraries in gcc command line

    - by AC
    How do I force cpptask to move the static libraries to the end on arg list issued to the compiler? Here is the clause I am using <cpptasks:cc description="appname" subsystem="console" objdir="obj" outfile="dist/app_test"> <compiler refid="testsslcc" /> <linkerarg value="-L${libdir}" /> <linkerarg value="-L/usr/local/devl/lib" /> <linkerarg value="-Wl,-rpath,../lib" /> <libset libs="unittest ${libs} dsg readline ncurses gcov" /> <fileset dir="test/obj" includes="main.o" /> <fileset dir="." includes="${TCFILES}" /> <fileset dir="../lib" includes="libboost_thread.a libboost_date_time.a" /> </cpptasks:cc> when this executes, libboost_thread.a libboost_date_time.a are first files in the argument list passed the compiler, gcc -ggdb -Wl,-export-dynamic -Wshadow -Wno-format-y2k ../../lib/libboost_date_time.a ../../lib/libboost_thread.a x.cpp ... which causes compiler error. By manually moving them to the end of the argument list, the application compiles without error. gcc -ggdb -Wl,-export-dynamic -Wshadow -Wno-format-y2k x.cpp ... ../../lib/libboost_date_time.a ../../lib/libboost_thread.a And yes I have tried changing the order in the xml, and that of course didn't work. For now I am using an exec task to call gcc with the files in the correct order but this of course is a hack.

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  • Large Django application layout

    - by Rob Golding
    I am in a team developing a web-based university portal, which will be based on Django. We are still in the exploratory stages, and I am trying to find the best way to lay the project/development environment out. My initial idea is to develop the system as a Django "app", which contains sub-applications to separate out the different parts of the system. The reason I intended to make these "sub" applications is that they would not have any use outside the parent application whatsoever, so there would be little point in distributing them separately. We envisage that the portal will be installed in multiple locations (at different universities, for example) so the main app can be dropped into a number of Django projects to install it. We therefore have a different repository for each location's project, which is really just a settings.py file defining the installed portal applications, and a urls.py routing the urls to it. I have started to write some initial code, though, and I've come up against a problem. Some of the code that handles user authentication and profiles seems to be without a home. It doesn't conceptually belong in the portal application as it doesn't relate to the portal's functionality. It also, however, can't go in the project repository - as I would then be duplicating the code over each location's repository. If I then discovered a bug in this code, for example, I would have to manually replicate the fix over all of the location's project files. My idea for a fix is to make all the project repos a fork of a "master" location project, so that I can pull any changes from that master. I think this is messy though, and it means that I have one more repository to look after. I'm looking for a better way to achieve this project. Can anyone recommend a solution or a similar example I can take a look at? The problem seems to be that I am developing a Django project rather than just a Django application.

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  • A couple of questions on exceptions/flow control and the application of custom exceptions

    - by dotnetdev
    1) Custom exceptions can help make your intentions clear. How can this be? The intention is to handle or log the exception, regardless of whether the type is built-in or custom. The main reason I use custom exceptions is to not use one exception type to cover the same problem in different contexts (eg parameter is null in system code which may be effect by an external factor and an empty shopping basket). However, the partition between system and business-domain code and using different exception types seems very obvious and not making the most of custom exceptions. Related to this, if custom exceptions cover the business exceptions, I could also get all the places which are sources for exceptions at the business domain level using "Find all references". Is it worth adding exceptions if you check the arguments in a method for being null, use them a few times, and then add the catch? Is it a realistic risk that an external factor or some other freak cause could cause the argument to be null after being checked anyway? 2) What does it mean when exceptions should not be used to control the flow of programs and why not? I assume this is like: if (exceptionVariable != null) { } Is it generally good practise to fill every variable in an exception object? As a developer, do you expect every possible variable to be filled by another coder?

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