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• Backbone.js: How to utilize router.navigate to manipulate browser history?

  - by Xavier_Ex

  I am writing something like a registration process containing several steps, and I want to make it a single-page like system so after some studying Backbone.js is my choice. Every time the user completes the current step they will click on a NEXT button I create and I use the router.navigate method to update the url, as well as loading the content of the next page and doing some fancy transition with javascript. Result is, URL is updated which the page is not refreshed, giving a smooth user experience. However, when the user clicks on the back button of the browser, the URL gets updated to that of a previous step, but the content stays the same. My question is through what way I can capture such an event and currently load the content of the previous step and present that to the user? Or even better, can I rely on browser cache to load that previously loaded page? EDIT: in particular, I'm trying something like mentioned in this article.

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• Java - jar with librairies included

  - by kozher

  I am currently trying to make a Jar with all my librairies included. What I have done. I have created folders like this : - main folder - class (which contain all my classes) - ressources (containing all my librairies : mongo, jedis...) - MANIFEST.MF My main class is named process. My manifest is like this : Main-Class: processEAN Class-Path: ressources\commons-pool-1.5.6.jar ressources\jedis-2.0.0.jar resources\mongo-2.6.3.jar class - I have generated the JAR with this command : jar cvmf MANIFEST.MF processEAN.jar class/*.class ressources/*.jar My problem : When executing the JAR I have still the message "Exception in thread "main" java.lang.NoClassDefFoundError: processEAN" Any ideas ? Thanks

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• what is serialization and how it works

  - by Rozer

  I know the serialization process but have't implemented it. In my application i have seen there are various classes that has been implemented serilizable interface. consider following class public class DBAccessRequest implements Serializable { private ActiveRequest request = null; private Connection connection = null; private static Log log = LogFactory.getLog(DBAccessRequest.class); public DBAccessRequest(ActiveRequest request,Connection connection) { this.request = request; this.connection = connection; } /** * @return Returns the DB Connection object. */ public Connection getConnection() { return connection; } /** * @return Returns the active request object for the db connection. */ public ActiveRequest getRequest() { return request; } } just setting request and connection in constructor and having getter setter for them. so what is the use of serilizable implementation over here...

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• Why would Django fcgi just die? How can I find out?

  - by Joe

  I'm running Django on Linux using fcgi and Lighttpd. Every now and again (about once a day) the server just dies. I'm using the latest stable release of Django, Python and Lighttpd. The only thing I can think of is that my program is opening a lot of files and executing a lot of external processes, but I'm fairly sure that side of things is watertight. Looking at the error and access logs, there's nothing exceptional happening (i.e. load isn't above normal). On those occasions where I have had exceptions from Python, these have shown up in the error.log, but when this crash happens I get nothing. Is there any way of finding out why the process died? Short of putting logging statements on every single line? Obviously I can't reproduce this so I don't know exactly where to look.

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• Running an app that requires an administrator account from a service

  - by Bergvall

  Is it possible to run handle.exe (from sysinternals) from a service (in windows7) without having to turn off UAC? The service is a custom c-app that needs to find out which process is locking a file it tries to access and handle.exe seems to be a good way to solve it but i can't get it to work with UAC turned on. This app runs all the time so i can't have a UAC prompt while its running but its fine if it shows up at startup. Handle.exe works fine from an admin commandprompt but fails when trying to run from a normal prompt. I call handle.exe from CreateProcess() and get the output from pipes. I guess there should be a way to solve this but i can't figure it out. Setting up the service to log in from an admin account does not seem to work.

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• wait for ajax request then finish the rest ( jQuery )

  - by user1725155

  I have a peace of jquery code: var new = checkCP(somedata); if(new=="hi"){ alert("Welcom"); } function checkCP(jsData){ $.ajax({ type: "POST", url: "Process.php", data: jsData, dataType: "json", success: function(data){ if(data.match==1) return "hi"; else return "bye"; } }); } I don't know why the welcome alert never show up . I checked everything , even on PHP file the result is 1 but apparently before It wait for ajax respond it passes the if(new=="hi"){ alert("Welcom"); } So is there anyway to wait for ajax respond then read the rest of codes in jQuery ? Thanks.

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• Replace a DIV with another using effect and set cookie

  - by Alex

  Hi. I've got some complicated requirements and wondered if there's a way to accomplish this via jQuery: User comes to a web page for the first time today and we show DIV_1. After 30 seconds, we dissolve DIV_1 to DIV_2. We set a cookie on the user's machine that expires when s/he returns tomorrow. If the same user returns today, we only show DIV_2. Tomorrow, we repeat the process: The user will see DIV_1 and then it dissolves to DIV_2. How do you accomplish this via jQuery? Thank you.

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• Implementing activity indicator

  - by Prash.......

  I am implementing an activity indicator in my application. In my application on button click a webservice is called and it takes some time. To show the user that process is going on I implemented an activity indicator: CGRect frame = CGRectMake(140, 300, 40, 37); UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:frame]; activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray; [self.view addSubview:activityIndicator]; This Snippet is written in viewDidLoad() method, and I have an action called, -(IBAction)agree:(id)sender { //here webservice is called } I have to start that activity by [activityIndicator startAnimating]; But I am unable to start that activityIndicator, please suggest a proper solution for that.

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• Needs opinions based on design guidelines .

  - by Abu Hamzah

  i am in the process of desigining my domain model and i know its very hard to suggest without knowledge of domain but what i am asking is how to implement or the best way of implementing the baseclass in my domain model. here are few classes: PartialPerson.cs Facilities.cs Visit.cs EntryPoint.cs etc.... my baseclass looks like this: public abstract class BaseClass { public int InfoId { get; } public int PersonId { get; } } here is what i am confused and need help. how do i implement the above baseclass? in the PartialPerson,Facilities,Visit...

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• How to debug a running C++ program in Linux?

  - by skydoor

  Hi I have a question about debugging a running C++ program in Linux. If a programming is already running and can't be interrupted, how to do that. I can find three ways, but I don't know too much about details, I am grateful if any one can elaborate it deeper. 1) we can use GDB by specifying the process ID gdb -p PID In this case, what's the difference between this and attach PID? 2) We can use pstat, however, I am using Ubuntu, no pstat, but only mpstat it seems that mpstat does not provide too much information, and not so many options. 3) check the details information under directory ./proc In this case, just go to the directory with the PID. However, should this be done mannually?

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• accessing my public methods from within my namespace

  - by Derek Adair

  I am in the process of making my own namespace in JavaScript... (function(window){ (function(){ var myNamespace = { somePublicMethod: function(){ }, anotherPublicMethod: function(){ } } return (window.myNamespace = window.my = myNamespace) }()); })(window); I'm new to these kinds of advanced JavaScript techniques and i'm trying to figure out the best way to call public methods from within my namespace. It appears that within my public methods this is being set to myNamespace. Should I call public methods like... AnotherPublicMethod: function(){ this.somePublicMethod() } or... AnotherPublicMethod: function(){ my.somePublicMethod(); } is there any difference?

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• Showing and hidding a DIV

  - by user1741568

  I'm in the process of building a gallery for my public art pieces. I was wondering if there was an easy way to show and hide a div? I only want the concept text to be seen on the first page of the following link: http://www.gerardtonti.com/PresentTense/PresentTense.html Right now I have the concept in a div called "concept" set to absolute positioning. Is there also a way for the text to conform relative to the size of the window like the background image? I've also tried using an iframe and colorbox instead of a div but had no idea how to make the iframe visible only on the first slide as well. Wether using an iframe or div, I was wondering if it was possible to hide either on the frames that follow the first slide. Any help would be greatly appreciated. Thank you, Gerry

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• jQuery .each() with Array

  - by John Crain

  Basically, I am trying to gather the IDs of every element with a specific class and place those IDs into an array. I'm using jQuery 1.4.1 and have tried using .each(), but don't really understand it or how to pass the array out of the function. $('a#submitarray').click(function(){ var datearray = new Array(); $('.selected').each(function(){ datearray.push($(this).attr('id')); }); // AJAX code to send datearray to process.php file }); I'm sure I'm way off, as I'm pretty new at this, so any advice help would be awesome. Thanks!

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• How to determine on which file system a file was created in Java

  - by rafrafUk

  Hi Everyone! I get files in different formats coming from different systems that I need to import into our database. Part of the import process it to check the line length to make sure the format is correct. We seem to be having issues with files coming from UNIX systems where one character is added. I suspect this is due to the return carriage being encoded differently on UNIX and windows platform. Is there a way to detect on which file system a file was created, other than checking the last character on the line? Or maybe a way of reading the files as text and not binary which I suspect is the issue? Thanks Guys !

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• How do I get MSBuild Task to generate XML Documents when building a solution?

  - by toba303

  I have a solution with lots of projects. Each project is configured to generate the XML documentation file when building in Debug-Mode (which is default). That works when I build in Visual Studio 2008. In my build script on my integration server I advise MSBuild to build the whole solution, but it won't generate the documentation files. What can I do? I already tried to explicitly give the Debug-Condition to the build process, but it makes no difference. <Target Name="BuilSolution"> <MSBuild Projects="C:\Path\To\MySolution.sln" targets="Build" Properties="SolutionConfigurationPlatforms='Debug|Any CPU'"/> </Target> There seem to be some ideas to solve this problem when building single projects, but I can't afford to do this, so I need a hint for doing it this way. Thanks in advance!

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• scikit learn extratreeclassifier hanging

  - by denson

  I'm running the scikit learn on some rather large training datasets ~1,600,000,000 rows with ~500 features. The platform is Ubuntu server 14.04, the hardware has 100gb of ram and 20 CPU cores. The test datasets are about half as many rows. I set n_jobs = 10, and am forest_size = 3*number_of_features so about 1700 trees. If I reduce the number of features to about 350 it works fine but never completes the training phase with the full feature set of 500+. The process is still executing and using up about 20gb of ram but is using 0% of CPU. I have also successfully completed on datasets with ~400,000 rows but twice as many features which completes after only about 1 hour. I am being careful to delete any arrays/objects that are not in use. Does anyone have any ideas I might try?

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• How to build SVN/Git like Diff in WebApp?

  - by 01

  I have XMLs(or Objects) that represents data at some point in a business process. I would like to be able to see what has changed between step1 and step5(two versions of the same XML or Object). Id like to implement this like diff function in version control system. how to do it in web app? P.S. I dont want to just store those files in VCS and than make it do the diff. However if I could somehow emulate VCS without having one that would be cool. P.S. I know there are some JS frameworks that offer diff functionality, but the XML could have 10MB, so I think it should be dont at server side.

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• Nested Dynamic PHP Class

  - by user338844

  Alright, I may just need a terminology update, but I have been playing in Magento and Joomla, and they do references like $mage = new Mage; $mage->block('blockname'); where class Mage through some process I am failing to figure out is calling: class blockname extends something{ } Don't quote me on that code, however I am looking to do something like that where I have a file that I can do $myscript-block('blockname'); and it will load and call the file with class blockname. I hope that is not too confusing, but any help is appreciated. Thanks in advance!

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• How do I make a TCP server work behind a router (NAT) without any redirection configuration needed.

  - by Chetane

  The scenario is the following. I have two machines A and B: A: Client (behind NAT) B: Server (behind NAT) I want B to be able to listen on any given port, so that A can send packets to B through that specific TCP port and receive any response. If both machines are not behind a NAT it is pretty straight foward process. However how do I make it work so that it works even when B is behind a router, without him having to go change the router configuration enable some port forwarding etc... For example, how do p2p program like torrent clients work without the user having anything to configure? Thanks and I hope my question is clear enough.

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• Updating a module level shared dictionary

  - by Vishal

  Hi, A module level dictionary 'd' and is accessed by different threads/requests in a django web application. I need to update 'd' every minute with a new data and the process takes about 5 seconds. What could be best solution where I want the users to get either the old value or the new value of d and nothing in between. I can think of a solution where a temp dictionary is constructed with a new data and assigned to 'd' but not sure how this works! Appreciate your ideas. Thanks

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• Hold the command prompt until user close it from close button.

  - by Kasun

  Hi, I going to get the command prompt from my C# application to compile some C++ files. Code is like this. private void button1_Click(object sender, EventArgs e) { string filePath = @"C:\Program Files\Microsoft Visual Studio 9.0\VC\bin\cl.exe"; System.Diagnostics.Process.Start(filePath); } But After i click the button it suddenly comes and disappear. Even its opening two command prompts. I need to Hold it and only one command prompt should appear. Can some one provide me the necessary codes. Thank you.

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• How to start up your .NET program from web browser?

  - by Ole Jak

  Could you provide example of JavaScript function for starting up application installed on your computer from a web browser (eg google chrome 4). It particular if .Net APPs have any special simplifying this process apis of out there are some libs for such staff, please share link with us. so how to create and store in run on start up programs a small local server which would handel some local urls like http://localhost/maAppServer/MyAppCalculator/Start for starting apps that have written in its config file their names and local urls on install? So how to start up your C# .NET app\program from web browser?

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• Work with Sun Solaris Operating System from .Net Based Application

  - by Harryboy

  Hello Friends, I am having a very strange requirement, Our client is having one network management system (Netcool) which reads the number of machine from two text file. Now whenever new machine is added in those text files application needs restart. We need to develop one GUI which writes the new machine into network in those files and restart the said application. I was in favor of java based application for the same but here everybody wants solution in ASP .Net Now i am not sure is it possible to write file on sun solaris based operating system from .net application and then restarting the process which is running on the same machine. Please suggest me, it would be great if you are having any articles or examples for the same.

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• Validating parameters to a bash script

  - by nickf

  I'm a total newbie to doing any bash scripting, but I came up with a basic one to help automate the process of removing a number of folders as they become unneeded. #!/bin/bash rm -rf ~/myfolder1/$1/anotherfolder rm -rf ~/myfolder2/$1/yetanotherfolder rm -rf ~/myfolder3/$1/thisisafolder This is evoked like so: ./myscript.sh <{id-number}> The problem is that if you forget to type in the id-number (as I did just then), then it could potentially delete a lot of things that you really don't want deleted. Is there a way you can add any form of validation to the command line parameters? In my case, it'd be good to check that a) there is one parameter, b) it's numerical, and c) that folder exists; before continuing with the script.

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• Is it possible to load a file full of binary data into GDB when GDB is debugging a core file?

  - by efunneko

  I am debugging a crash using GDB and a core file. A large portion of the memory space is mmapped into the process. That portion of the memory is not saved into the core file. I have a file that contains all the data in that mmapped memory. I would like to find a way to load the data from that file into GDB at a certain offset so that I can display datastructures within that address space. Is this possible? Note that I have tried the 'restore' command in GDB and it does not work when debugging a core file. Perhaps there are tools that allow a core file to have additional data appended to it?

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