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• Can Tomcat provide seperate (or HTTPS only) sessions for HTTPS requests?

  - by Joe

  I have a web application which contains both secure (SSL) and non-secure pages. A user can login to the site and must appear logged-in in both the SSL and non-SSL areas. (NB. SSL isn't implemented via Tomcat, but via Apache HTTPD servers which sit in front of Tomcat - so Tomcat has no SSL configuration.) The logged-in state is currently maintained via a servlet session (using Tomcat's vanilla session management). The obvious issue with this approach is that the JSESSIONID cookie is transported over both HTTP and HTTPS connections, meaning that it's potentially possible to intercept it and hijack the session. Are there any solutions to this without rolling our own session management (i.e. does Tomcat cater for this situation)? I'm prepared to implement our own session management, but don't want to reinvent something that may already be supported.

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• UX Design Question: Should a multi step wizard save the form contents when the user clicks 'go back'

  - by Ashwin Prabhu

  I am developing a web application that collects data over multiple steps through a wizard. Steps are generally not interdependent, in that data input at each step has little or no effect on the consequent steps. However each step may have a set of validations which determine whether the user can progress to the next step by clicking 'continue' What should be the behavior when the user clicks previous? a Quickly move to the previous page, thus losing all the unsaved data in the form. Prompting the user with a warning is an option, but it can become irritating quite soon. b Move to the previous page saving all the data in the current step - without triggering validations, so that when the user comes back she sees the form in the same state that she left it in. c any other behaviour All opinions are welcome :)

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• Image container instead of event object in image load event handler

  - by avok00

  I stumbled upon a very strange thing. In FF 3.6 (not tested others yet) I add onload handler to an image like this: imgRef.addEventListener("load", activateLink, false); When load event fires, in activateLink(evt) the evt paramater is not an event, but the "a" tag that contains the image. Why is this? function activateLink(evt) { // evt turns out to be a refference to <a> tag (HTMLAnchorElement) that contains the image. // Actually two of them. Both dynamically added with addElement. } I remembered another fact that may be relevant. I have multiple images with the same src that all have registered this same event handler activateLink. Could this be the problem?

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• Summation using Lambda C# 3.0

  - by Newbie

  I have a small thing. public int GetSum(List<int> x) { foreach (int i in x) sum += i; return sum; } where x is a List of integers defined as List<int> l = new List<int>(); l.Add(4); l.Add(2); l.Add(5); l.Add(8); l.Add(6); and has been passed as GetSum(l) Is it possible to rewrite the above foreach loop using a lambda? Reason: I started looking into the lambda stuffs since yesterday and is interested to learn .. however simple it may be. Thanks.

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• Can a Javascript bookmarklet overlay an image on a web page?

  - by songdogtech

  Can a bookmarklet be used to overlay an image on a web page? Not as a pop-up, but as a image positioned by CSS and with a high z-index to display on top of other elements. And without a mask i.e., Shadowbox or similar jQuery effect. Just an image from a URL and positioned in the bottom left hand corner of the browser window. This is what I have so far, but it may be the wrong direction to be going: javascript:(function(){document.write("body {background-image:url(http://mydomain.com/image.png); position: absolute; left:50px; top:300px; z-index:9999;}");})() I have a JS function that works as a bookmarklet to change the case of text on the page, and now I'd like to be able to show an image when the bookmarklet is used.

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• Automated user testing with times

  - by Sean

  I am attempting to test user interaction with an off the shelf product. The current process is to run through a manual script and record how long certain processes take to populate data, it may populate a datagrid, a tree, a list box, etc... It will also need to be able record how long it takes to generate a pdf report. We do not require extremely accurate time just to the nearest second or less than a second. I need to know if there is a simple Automated testing product that will handle the above criteria.

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• Calling functions outside paths

  - by user1775718

  In mongojs, when you do: var birds = db.birds.find(searchTerm, callback); ...how do you pass arguments to the callback? I've tried bind, as in: birds = db.birds.find(searchTerm, app.get('getBirds').bind(res)); ...but to no avail. Just fyi I'm trying to pass the response object of the GET route so that the callback can render using res.send(results). The other option is to set app.set('res': res); and call app.get('res') from the callback - I'm not sure this is a good idea. It works, but it doesn't obey the events loop model too well - I think the request back to the app may be costly? Any help would be gratefully accepted. :)

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• Override An Existing Property as a Child form of its return type

  - by Jason

  I apologize if that title is confusing. This question may be a result of lack of coffee and/or sleep, but my mind is not working correctly right now. Anyways, I have an inheritance tree like such (I know the architecture isn't ideal): BaseClass GeneralForm : Inherits BaseClass SpecificForm : Inherits GeneralForm And an object like so: MyItem MySpecificItem : Inherits MyItem I have Items As List (Of MyItem) as a property in BaseClass. I would like for SpecificForm to somehow override Items to return type List (Of MySpecificItem). I feel like this is easy to do, but again, my head is spinning and I can't think straight at the moment. Thank you so much in advance.

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• jQuery: How to stop propagation of a bound function not the entire event?

  - by Dale

  I have a click function bound to many elements. It is possible that sometimes these elements may sit within one another. So, the click event is bound to a child and also bound to its parent. The method is specific to the element clicked. Naturally, because of event bubbling, the child's event is fired first, and then the parents. I cannot have them both called at the same time because the parents event overwrites the event of the child. So I could use event.stopPropagation() so only the first element clicked receives the event. The problem is that there are other click events also attached to the element, for example, I am using jQuery's draggable on these elements. If I stop the propagation of the click event, then draggable doesn't work, and the following click events are not called. So my question is: Is there a way to stop the event bubbling of the method the event will call and not the entire event?

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• How to specify unique container styles for heterogenous hierarchies using SL3 and TreeView control

  - by rcecil

  Hello, Just look for strategies that have been successful in rendering hierarchies that represent inheritance structures using SL3/4 TreeViews. I need to render certain nodes differently than others, depending upon what kind of container they are (a choice between things, or simply a list of related things, etc.) So far, I've been very successful with the DataTemplate route: I've been able to use a technique described in Ted Glaza's post "Easy DataTemplateSelectors in Silverlight" (you may have retrieve a Google cache of this page). SO what I'm trying to discover is something on the order of a StyleSelector, not a DataTemplateSelector. I'm considering leveraging my current implementations of Glaza's pattern of selector objects to somehow detect the node type and set the ItemContainerStyle there, but it doesn't seem clear right now. Thanks for your thoughts.

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• Best way to order menu items injected by an IoC/plugin Framework

  - by Daver

  One of the common things I've seen done in applications built on IoC/plugin frameworks is to add commands to menus or toolbars from the dynamically loaded plugins. For example, the application's default plugins supply actions like "New, Open, Save" that show up in the context menu for a certain item in the workspace. A new plugin may add "Mail, Post, Encrypt" commands, but where do those commands show up in relation to "New, Open, Save"? How can the application that is loading components through IoC impose order on the items that get injected? Does it require metadata from the plugins that give a hint on how to group or order the items? Does it use a config file of previously known menu names (or ids) to define the order (seems a little weak to me)? Or are "unknown" plugins treated as second class citizens and always get dumped into sub menus? Something I've never even imagined (which I'm hoping to see in the answers)

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• Java Counting # of occurrences of a word in a string

  - by Doug

  I have a large text file I am reading from and I need to find out how many times some words come up. For example, the word "the". I'm doing this line by line each line is a string. I need to make sure that I only count legit "the"'s the the in other would not count. This means I know I need to use regular expressions in some way. What I was trying so far is this: numSpace += line.split("[^a-z]the[^a-z]").length; I realize the regular expression may not be correct at the moment but I tried without that and just tried to find occurrences of the word the and I get wrong numbers to. I was under the impression this would split the string up into an array and how many times that array was split up was how many times the word is in the string. Any ideas I would be grateful.

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• Easier way to move a project in Eclipse

  - by myplacedk

  My projects changes location, and I need to tell Eclipse this. Today I just delete the project and import it from the new location. But I have a lot of projects, they change location often and the paths a very complicated. I'd like a better way to manage this in Eclipse. For example: J:\iteration234_abc\foo\bar\baz\iffle\dizzle\Project Only the root-folder changes (iteration-number and the idenfier "abc"). After that there are lot of folders. Many folders has tons of subfolders with similar names, which makes finding the folder with GUI time-consuming and very boring. It would be so nice if I could just edit the path. As you may have guessed: The J-drive is a network drive, provided by the source control system. The way to tell source control that I'm working on another itertion, is to continue my work in a different folder. My actual Eclipse workspace normally doesn't contain any projects.

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• How to Software Service Industry get their Client from or where do they look for their Clients ?

  - by Rachel

  This question is inclined more towards Business Side of Software Industry, I am sure that we have two types in Software Industry as with any other Industry, i.e, Service side and Product Side. Basically for Product based company, we are looking more into product features and to see if market if mature or not for particular product but as far as Service Based company goes (may be it can be big giants like Infosys, TCS or Sapient or some midsize or small companies which provide services like:Web Design,Website Design,Corporate Identity,Logo Design,Flash Design,Web Applications,Enterprise Portal,Rich Internet Applications,Business Applications,Technology Consulting,Ecommerce,Online Store Creations,Custom Shopping Carts,Ecommerce Hosting,Website Marketing,Organic SEO,Pay-Per-Click,Social Media Optimization,Mobile,Mobile Website and Mobile Applications) where do they look for Client and how do they manage to get one ? So my basic question is Where do Service Based Companies Look for Client or get their Clients Form ?

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• Is there a consolidated way of writing several prototype functions for a single object?

  - by Christopher Altman

  I have about eight prototype functions for the Date object. I would like to avoid repeating Date.prototype. Is there a consolidated way of writing several prototype functions for a single object? I tried this to no avail: Date.prototype = { getMonthText: function(date){ var month = this.getMonth(); if(month==12) month = 0; return ['JAN','FEB','MAR','APR','MAY','JUN','JUL','AUG','SEP','OCT','NOV','DEC'][month]; }, getDaysInMonth: function(date){ return 32 - new Date(this.getFullYear(), this.getMonth(), 32).getDate(); } };

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• How can I load scripts, styles and images from a non-URL source?

  - by Jen

  I am integrating WebKit (via Qt) into an application. Instead of having WebKit retrieve scripts, CSS files and images via URLs, I want my application to provide them (e.g. retrieved from a database). For example, a "regular" web page may contain this tag: <IMG src="photos/album1/123456.jpg"> Instead of WebKit fetching this image from a server or the file system, I would prefer some kind of callback that allows my application to provide this image. How can I accomplish this?

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• Django, javascript and code ruse problem

  - by dragoon

  Hi, I have some sort of a design problem with my Django AJAX application. I have a template where I initialize js variable from django context variable like so: var test = "{{ test }}"; This variable is than used in a number of js functions that are needed for interface to work properly. So now I'm trying to reuse some content from this page in another page that loads it dynamically on some user interaction using jQuery.load(..), and I don't see any way how I can initialize that variable, so js functions don't work now. Is there any solution for this or may be I'm doing it wrong? Thanks.

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• c# how to set up and use session state from preinit

  - by Praesagus

  OK so to set and read variables from the current session String Myvar =(string) System.Web.HttpContext.Current.Session[“MyVariable”] To set System.Web.HttpContext.Current.Session[“MyVariable”] = “NewValue” I can do neither, I get a System.NullReferenceException: Object reference not set to an instance of an object. from System.Web.HttpContext.Current.Session. In my web.config I have <sessionState mode="StateServer" stateConnectionString="tcpip=127.0.0.1:42424" cookieless="false" timeout="20"> </sessionState> I have read a dozen articles on the the necessity of IHttpHandler and an IRequiresSessionState interface. I think the issue may be caused because I am requesting this information in Page_PreInit. I found a solution in a stack overflow article but I don't seem be using it properly to actually make this go. I am not sure what I am missing. Thanks in advance.

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• algorithm to find Best 8 minute window in a 1 hour run

  - by Arun

  I have a requirement like, an activity runs for about more than an hour. I need to get the best 8 minute window where some parameters are maximum. say a value x, which is dynamic for every second. if my activity runs for one hr,i get 3600 values for x. I need to find the best continuous 8 minute time interval where x value was the highest among all the others. if i capture say from 0th minute to 8th minute, there may be another time frame like 0.4 to 8.4 where it was maximum. the granularity is one second. every second we need to consider. basically the peak 8 minute window where x was maximum. please help me with the design

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• Is the .Net HashSet uniqueness calculation completely based on Hash Codes?

  - by RobV

  I was wondering whether the .Net HashSet<T> is based completely on hash codes or whether it uses equality as well? I have a particular class that I may potentially instantiate millions of instances of and there is a reasonable chance that some hash codes will collide at that point. I'm considering using HashSet's to store some instances of this class and am wondering if it's actually worth doing - if the uniqueness of an element is only determined on its hash code then that's of no use to me for real applications MSDN documentation seems to be rather vague on this topic - any enlightenment would be appreciated

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• Does a static object within a function introduce a potential race condition?

  - by Jeremy Friesner

  I'm curious about the following code: class MyClass { public: MyClass() : _myArray(new int[1024]) {} ~MyClass() {delete [] _myArray;} private: int * _myArray; }; // This function may be called by different threads in an unsynchronized manner void MyFunction() { static const MyClass _myClassObject; [...] } Is there a possible race condition in the above code? Specifically, is the compiler likely to generate code equivalent to the following, "behind the scenes"? void MyFunction() { static bool _myClassObjectInitialized = false; if (_myClassObjectInitialized == false) { _myClassObjectInitialized = true; _myClassObject.MyClass(); // call constructor to set up object } [...] } ... in which case, if two threads were to call MyFunction() nearly-simultaneously, then _myArray might get allocated twice, causing a memory leak? Or is this handled correctly somehow?

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• Designing a Chart that expands as more data is entered in Excel

  - by Matt Ridge

  I have a worksheet that pulls data from another, it is designed to only show late jobs, and it works perfectly. I have it where it is broken down into quarters, and it gathers all this data and does everything I want. Except this one last bit... I want to have it where it shows charts, if there is data in said area the chart would self populate, otherwise it would be blank. If more data is entered into the range expand the chart accordingly. Attached is a simplified workbook with what it does, and what I'd like to see it do. I don't even know if this is possible... I thought if I wrote a script to make it so that the data changes with each addition it may fix my problem, but I'm not sure if that is the best way in this situation. https://dl.dropbox.com/u/3327208/Excel/Charts.xlsx

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• Git Use Remote Source Durring Push

  - by ThinkBohemian

  I have a local git repository a "central" repo at github. I'm working on a part of a project, while a friend is working on a related piece that is its entirely seperate repo, is it possible for me to simply link directly to my friends repo? For example, the app is called widgets. I have all my code in widgets/app/mycode and my friend is writing code that goes into widgets/plugins/awesome/hiscode. I want to be able to always have http://github.com/mycode/widgets/plugins/hiscode to be a direct link or clone to http://github.com/hiscode/awesome ? It could be possible i'm missing something basic in my question or knowledge of git, if so please ask, and i'll be happy to try to fill in the blanks. I am deploying to my production site via capistrano, so maybe a script of some kind may be easier?? I don't know (that's why i'm posting)!!

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• Sorting 1 million 8-digit numbers in 1MB of RAM

  - by Favourite Chigozie Onwuemene

  I have a computer with 1M of RAM and no other local storage. I must use it to accept 1 million 8-digit decimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection. The list of numbers may contain duplicates, which I must not discard. The code will be placed in ROM, so I need not subtract the size of my code from the 1M. I already have code to drive the ethernet port and handle TCP/IP connections, and it requires 2k for its state data, including a 1k buffer via which the code will read and write data. Is there a solution to this problem?

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• Initialize generic object from a System.Type

  - by CaptnCraig

  I need to create a generic type, but I do not know the type at compile time. I would like to do this: Type t = typeof(whatever); var list = new List<t> this won't compile, because t is not a valid type. But it does know all about a valid type. Is there a way to dynamically create the generic list from a System.Type like this? I may need reflection, and that's ok, I am just a bit lost here.

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