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• Combine DVCS with Visual Source Safe

  - by WBlasko

  I'm forced to use Visual Source Safe 2005 at work. I'd like to combine that with a DVCS, so that I can check in files locally without disrupting my co-workers if there's a bug or it doesn't compile. In my attempts with Mercurial, it works, but causes a few weird issues. Namely, it thinks someone else has checked out the files I have checked out. Here's my thoughts on how I should manage it: Disable auto-checkout. Work locally in Mercurial When I'm ready to push my changes... Clone my Mercurial repository. Update my Visual Source Safe repository Pull and merge the two repositories using Mercurial. Check everything into Visual Source Safe. Does this sound reasonable? I'm always hearing bad things about VSS, is this just asking for me to see those problems firsthand?

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• Checking for & storing multiple CheckBox selections in CSharp.

  - by Matt

  I'm very new to CSharp and I can't seem to find a good solution to what I would consider a simple problem. Basically I'm trying to determine which CheckBoxs have been selected by the user and then randomly generate combinations of the selections the user has made. As new as I am, I am aware that you can use a simple statement such as: checkBox1.IsChecked == true I could have a long set of if statements which update an array/collection, but I'm told that in Csharp there is a way of determining which CheckBoxs are checked by querying the GroupBox that the CheckBoxs are in. Unless I'm mistaken (which is very possible) this is achieved by using Control features, unfortunately I've not come across these yet in my learning so if someone could clear things up that would be great. In summation, if someone has a simple solution for running through a set of checkBoxs and storing only the selected ones I would be most grateful.

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• Why is J2ee/EJBs a dying Trend?

  - by Taranfx

  I might be wrong on this, but I no longer see heavy Business and Web services being hosted using J2ee technologies (Especially EJBs). Having known the power and scalability of J2ee applications, what is keeping developers/decision makers to restrict themselves to Core Java (POJOs) or even other web technologies like PHP, python. Is it the development time? Is it the Ease of configuration? (I feel this should not be a strong reason with Java EE 6, things are simplified) Of course scripting languages are faster to develop, we cannot ignore the fact that they are inherently not-as-scalable as Java Applications are (using App servers)

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• GWT Background Study For Project help!

  - by Noor

  Hi, I am currently doing a project on GWT and in the background study, I need to perform a research on GWT. I have included many things which I will list below, Can u point something which I may be missing or what other interesting thing concerning GWT can i include more. The following what is currently included: GWT Java to JavaScript Compiler Deferred Binding JSNI (JavaScript Native Interface) JRE Emulation Library GWT-I18N (Internationalization and Configuration tools) GWT’s XMLParser Widgets and Panels Custom Composite Widget Event and Listeners Styling through CSS GWT History Management GWT Hibernate Integration (through GLead) MVP (Model-View-Presenter) for GWT through Model View Presenter Application Controller and Event Bus Server Calls using RPC and request builder Comet Serialization in GWT JSON (JavaScript Object Notation) Testing Web Application with GWT JUnit Benchmarking Selenium Further work in GWT such as Ext-GWT and smart GWT

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• How can I stop IIS7 from using HttpHandlers?

  - by mcintyre321

  I'm having a bit of a play around with IIS7, just trying to catch events manually in global.asax and skip the ASP pipeline entirely. To this end, I've set <httpHandlers> <clear/> </httpHandlers> <httpModules> <clear/> </httpModules> but when I call the server I get a YSOD [HttpException]: No http handler was found for request type 'GET' at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) What do I need to do to completely prevent IIS from handling things? What I want is just to do Response.Writes in event handlers and async methods set up in HttpApplication.Init

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• Best tools for collaborating with small number of people

  - by Mark Szymanski

  Hi, I am collaborating with someone on a project and currently use Skype for collaboration. I like it because we can be on a call to say things that are hard to say by typing out. We can share our screens so we can help with code writing. And we can use the text chat to copy-paste code between each other. We also use Subversion for version control. I just wanted to know what other people used for collaborating with others so I could see whats out there to use. Thanks!

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• In a multithreaded app, would a multi-core or multiprocessor arrangement be better?

  - by Michael

  I've read a lot on this topic already both here (e.g., stackoverflow.com/questions/1713554/threads-processes-vs-multithreading-multi-core-multiprocessor-how-they-are or http://stackoverflow.com/questions/680684/multi-cpu-multi-core-and-hyper-thread) and elsewhere (e.g., ixbtlabs.com/articles2/cpu/rmmt-l2-cache.html or software.intel.com/en-us/articles/multi-core-introduction/), but I still am not sure about a couple things that seem very straightforward. So I thought I'd just ask. (1) Is a multi-core processor in which each core has dedicated cache effectively the same as a multiprocessor system (balanced of course for processor speed, cache size, and so on)? (2) Let's say I have some images to analyze (i.e., computer vision), and I have these images loaded into RAM. My app spawns a thread for each image that needs to be analyzed. Will this app on a shared cache multi-core processor run slower than on a dedicated cache multi-core processor, and would the latter run at the same speed as on an equivalent single-core multiprocessor machine? Thank you for the help!

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• VBA - Create ADODB.Recordset from the contents of a spreadsheet

  - by robault

  Hello, I am working on an Excel application that queries a SQL database. The queries can take a long time to run (20-40 min). If I've miss-coded something it can take a long time to error or reach a break point. I can save the results to a sheet fine, it's when I am working with the record sets that things can blow up. Is there a way to load the data into a ADODB.Recordset when I'm debugging to skip querying the database (after the first time)? Would I use something like this? http://stackoverflow.com/questions/2086234/query-excel-worksheet-in-ms-access-vba-using-adodb-recordset

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• Static analysis of multiple if statements (conditions)

  - by koppernickus

  I have code similar to: if conditionA(x, y, z) then doA() else if conditionB(x, y, z) then doB() ... else if conditionZ(x, y, z) then doZ() else throw ShouldNeverHappenException I would like to validate two things (using static analysis): If all conditions conditionA, conditionB, ..., conditionZ are mutually exclusive (i.e. it is not possible that two or more conditions are true in the same time). All possible cases are covered, i.e. "else throw" statement will never be called. Could you recommend me a tool and/or a way I could (easily) do this? I would appreciate more detailed informations than "use Prolog" or "use Mathematica"... ;-)

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• Using numeric_limits::max() in constant expressions

  - by FireAphis

  Hello, I would like to define inside a class a constant which value is the maximum possible int. Something like this: class A { ... static const int ERROR_VALUE = std::numeric_limits<int>::max(); ... } This declaration fails to compile with the following message: numeric.cpp:8: error: 'std::numeric_limits::max()' cannot appear in a constant-expression numeric.cpp:8: error: a function call cannot appear in a constant-expression I understand why this doesn't work, but two things look weird to me: It seems to me a natural decision to use the value in constant expressions. Why did the language designers decide to make max() a function thus not allowing this usage? The spec claims in 18.2.1 that For all members declared static const in the numeric_limits template, specializations shall define these values in such a way that they are usable as integral constant expressions. Doesn't it mean that I should be able to use it in my scenario and doesn't it contradict the error message? Thank you.

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• how can i select first second or third element with given class name using CSS?

  - by Tumharyyaaden

  ie. i have the following: <div class="myclass">my text1</div> some other code+containers... <div class="myclass">my text2</div> some other code+containers... <div class="myclass">my text3</div> some other code+containers... i have the css class div.myclass {doing things} that applies to all obviously but i also wanted to be able to select the first, second or third like this: div.myclass:first {color:#000;} div.myclass:second {color:#FFF;} div.myclass:third {color:#006;} almost like the jQuery index selection .eq( index ) which is what i am using currently but need a noscript alternative. Thanks in advance!

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• Embedding QT application in Eclipse/RCP framework

  - by mots_g

  Hi, I'm trying to embed my working QT application in Eclipse RCP framework(might not sound wise but i need to do this). I'm using QT 4.5 (not yet explored what QTJambi is all about and has to offer) I convert my existing application as a dll and load it through eclipse application. Things dont work as they should as the QTApplication loop sits listening for events, and there is a good mismatch of events. Certain UI objects dont get the events. If I comment my Qppliaction::exec(), then the behaviour in QT app changes. Is there a way to achieve what I'm trying to achieve?? Thanks

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• How to setup default attributes in a ruby model

  - by webdestroya

  I have a model User and when I create one, I want to pragmatically setup some API keys and what not, specifically: @user.apikey = Digest::MD5.hexdigest(BCrypt::Password.create("jibberish").to_s) I want to be able to run User.create!(:email=>"[email protected]") and have it create a user with a randomly generated API key, and secret. I currently am doing this in the controller, but when I tried to add a default user to the seeds.rb file, I am getting an SQL error (saying my apikey is null). I tried overriding the save definition, but that seemed to cause problems when I updated the model, because it would override the values. I tried overriding the initialize definition, but that is returning a nil:NilClass and breaking things. Is there a better way to do this?

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• Using ZeroC Middleware

  - by Sean

  I'm currently looking at various middleware solutions that will allow me to create applications in a variety of languages which are able to communicate amongst each other. The ZeroC product suite seems ideal as it provides a language agnostic way of defining data and the services that operate on the data (via its ICE idl) and provides support for all the mainstream languages. It also appears to offer a lot of other things we'd want, such as load balancing, grid computing and managed deployment. However, my google-fu has let me down and I'm having trouble finding information from people who have used it to implements system. I'm looking for feedback from projects that use it, and what issues/successes they had. I'm also interested in feedback from projects that evaluated it and chose not to use it (and why).

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• C# WCF/WebService: Interoperable exception handling.

  - by michael paul

  I understand that WCF will convert an exception into a fault and send it back as a SOAP message, but I was wondering if this is truly interoperable. I guess I'm having a tough time trying to figure out this possible scenario: Client (Java) calls a WCF Service (LoginService). Server checks for proper authorization, user authorization fails. Server throws an UnauthorizedAccessException. WCF converts this into a Fault somehow. (* - See Below As Well) Client has to be able to know how to read this Fault. I guess I'm just having a tough time understanding how this could still be interoperable because it is expecting Java to know how to translate a SOAP Fault that .NET encodes from an UnauthorizedAccessException. Also, how does .NET actually convert the exception to a fault, what goes in as the fault code, name, etc. Some of the things seem to be "duh"s like perhaps the Fault Name is "UnauthorizedAccessException", but I'd rather know for sure than guess.

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• AJAX vs AHAH Is there a performance advantage?

  - by LanguaFlash

  My concern is performance, is there a reason to to send the client XML instead of valid HTML? Like most things, I am sure it is application dependent. My specific situation is where there is substantial content being inserted into the web page that has been pulled from a database. What are the advantages of either approach? Is the size of the content even a concern? Or, in the case of using XML, will the time for the Javascript to process the XML into HTML counterbalance the extra time that would have been required to send HTML to start with? Thanks, Jeff

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• Most used .NET namespace

  - by Michael Prewecki

  What is your most commonly used namespace in .NET. I know it will vary greatly based upon the types of projects you develop but the stack overflow audience should provide a fairly decent sample set for the types of .NET projects being developed. I'm simply interest in the name of the namespace (one namespace per answer and no one person should have more than one answer, if someone else has the same answer as you then just upvote their answer). Try to be as specific as possible (so answering System, isn't helpful). I'm after this information to help new developers focus their attention on the most common .NET namespaces...there are after all thousands of them! To start off mine is almost certainly System.Collections.Generic, I use lists of things everywhere.

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• Silverlight authentication during startup - how to mimic syncronous behavior?

  - by jkohlhepp

  I have a Silverlight app that is using the MVVM pattern. I have a WCF service which will allow me to authenticate users (I don't have direct control over that service - assume it is a black box that just returns me the user info and a list of privileges the user has). So, when the app starts up, I want to pull security data from that service. Right now, when I do this, my views and view models can end up getting initialized before the service returns with the security data. This causes problems because the view models need to disable buttons and make things visible/invisible based on the user having certain privileges. Is there a pattern that allows me to prevent the initialization of the views / view models until the WCF call has returned? How would you go about solving this problem as elegantly as possible?

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• Client authentication with RubyLDAP ldap

  - by Marcelo de Moraes Serpa

  Hello all, I'm trying to implement a feature that uses LDAP over SSL (SSL, not TLS), it needs to connect to a SSL-enabled LDAP server (i.e OpenLDAP), bind and then do any additional queries. It also needs to support client-authentication, and this is where things get tricky: The client is a web application written in Ruby, and we are using RubyLDAP (so far we have used it for non-SSL ldap stuff with great success). My question is: Is there a way to load a client certificate and send its data over the wire to the LDAP server when doing a LDAP::SSLConn? I haven't found anything obvious on the API docs (http://ruby-ldap.sourceforge.net/rdoc/) nor while googling around. I know I that I can prevent the server from asking for a certificate by putting the following on slapd.conf (OpenLDAP): TLSVerifyClient never However, this is not an option here. Thanks, Marcelo.

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• How can I put all twill commands together into one piece of code in a .py file?

  - by brilliant

  Hello everybody! I have just started exploring TWILL. Twill is an amazing scripting language for Web browsing and it does all I want!!! So far I've been using twill from a Python shell (IDLE (Python GUI) to be precise) and I do things in the way of executing commands one by one (I mean, I type one command, run it, then type the next command): But I don't know how to put all these commands together in one .py file, so that they would all be executed one by one automatically. It seems that there is such possibility in twill. This example from the twill documentation page (you can see it HERE) shows us one piece of code consisting of several commands: So, my question is: How can I put all commands together in twill?

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• What's going to replace HTML & CSS & JS?

  - by Nigel Thorne

  HTML and CSS are showing their age. SASS generates CSS (because CSS isn't clean enough). Graphic Designers don't work in HTML, they work in graphics tools then have to translate it to HTML/CSS. JavaScript has to have abstractions like jQuery, and CSS has a bunch of hacks to even start approaching consistent predictable user experience. It feels like people are doing some wonderful things despite the technologies, not because of them. Surely there is a better way?!? Something more closely aligned with the task at hand.. of providing a fluid intuitive (consistent) user experience to let users achieve their goals. Thoughts?

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• How do I embed an expect script that takes in arguments into a bash shell script?

  - by fzkl

  I am writing a bash script which amongst many other things uses expect to automatically run a binary and install it by answering installer prompts. I was able to get my expect script to work fine when the expect script is called in my bash script with the command "expect $expectscriptname $Parameter". However, I want to embed the expect script into the shell script instead of having to maintain two separate script files for the job. I searched around and found that the procedure to embed expect into bash script was to declare a variable like VAR below and then echo it.: VAR=$(expect -c " #content of expect script here ") echo "$VAR" 1) I don't understand how echoing $VAR actually runs the expect script. Could anyone explain? 2) I am not sure how to pass $Parameter into VAR or to the echo statement. This is my main concern. Any ideas? Thanks.

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• Best Open Source Project Hosting Site

  - by Cristian

  I want to start an open source project, but the rise in hosting sites leaves me a little paralyzed with choice. I know a little about several: I never really liked SourceForge's UI but it still feels like the site I think of when I think "open source project hosting". Google Code Project Hosting looks clean and useful but doesn't seem as feature complete as SourceForge. I've heard good things about Launchpad but don't know much about it nor do I know Bazaar (though I'd be interested in learning it). I know almost nothing about GitHub and, like Bazaar, I don't know Git. Does anyone have any experience with these sites or some other cool code host? Any recommendations? Recommended Sites: BitBucket Codeplex Assembla DevjaVu Savannah

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• ASP.Net State Server on EC2 not connection

  - by CountCet

  I am trying to set up an Asp.Net State Server on Amazon EC2. The single web server using this State Server is also on EC2. I've done the following things. I've added the IIS role on the State Server. I changed the value in the registry to allow connections for the service and started the aspstate service. I verified it is listening on port 42424 by checking netstat. I edited the web.config of the Web server to point to this server. I added the the tcp port to my EC2 security group and allowed it for all incoming ip's. Anything else I am not doing?

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• How to store a numeric value which can have other statuses in a database?

  - by Jiho Han

  I need to store a set of numbers in a database which are imported from a spreadsheet. Sometimes a number is just a number. But in other times, a value can be "missing", "N/A", or blank and these all represent different things. What would be a good approach to store these numbers in the database? Originally I only had to account for N/A. So I made it -1 as I imported them (this only works if the number can never be negative obviously). I could use other negative numbers for other statuses. However, that seems clunky to me. Should I store the numbers as string then apply conversion at use time? Should I create a matching table that stores different statuses of each value?

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