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• Restrict folder sharing over cygwin sshd

  - by mtanish

  I recently installed a SSH server on my Windows 7 PC and created a separate user account for this. When i logged in using SSH, i could access all the windows directories. /cygdrive/c /cygdrive/d /cygdrive/e How do i prevent this user from accessing all the win directories other than its home directory under cygwin /home/chuck/ ? Preferably i do not want the user to even view /cygdrive when the user types "mount". Is there a easy way to do this? I want to later allow remote users to log on to this machine and avoid messing up other things.I know i can setup a separate machine but this is a plan for later.

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• Significant new inventions in computing since 1980

  - by Alan Kay

  This question arose from comments about different kinds of progress in computing over the last 50 years or so. I was asked by some of the other participants to raise it as a question to the whole forum. Basic idea here is not to bash the current state of things but to try to understand something about the progress of coming up with fundamental new ideas and principles. I claim that we need really new ideas in most areas of computing, and I would like to know of any important and powerful ones that have been done recently. If we can't really find them, then we should ask "Why?" and "What should we be doing?"

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• Error: The Side-by-Side configuration information in "BLAH.EXE" contains errors.

  - by Jim Buck

  This is the error Dependency Walker gives me on an executable that I am building with VC++ 2005 Express Edition. When trying to run the .exe, I get: This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem. (I am new to the manifest/SxS/etc. way of doing things post VC++ 2003.) EDIT: I am running on the same machine I am building the .exe with. In Event Viewer, I have the unhelpful: Faulting application blah.exe, version 0.0.0.0, faulting module blah.exe, version 0.0.0.0, fault address 0x004239b0.

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• Problem deploying GWT project with a servlet that invoke an EJB

  - by bovo

  I have a simple GWT project in Eclipse, it has a servlet that calls an EJB and everything works fine when I run it in hosted mode from Eclipse. MyProject +- src +- JRE System Library +- GWT SDK +- Apache Geronimo v2.2 +- myEJB.jar +- openejb.jar -- war -- +- images -- +- myproject -- +- WEB-INF I'm not sure what is the best way to deploy it, but what I did is create a .war file from the "war" folder of the project then deploy it to the server. Communication between client and server works fine but I get an error when I try to do JNDI look up for the EJB within the servlet. The error I get is something like "JNDI error, cannot find FooManagerRemote" Things works fine in hosted mode so I'm pretty sure that I din't deploy it correctly.

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• Artifical neural networks height-weight problem

  - by hammid1981

  i plan to use neurodotnet for my phd thesis, but before that i just want to build some small solutions to get used to the dll structure. the first problem that i want to model using backward propagation is height-weight ratio. I have some height and weight data, i want to train my NN so that if i put in some weight then i should get correct height as a output. i have 1 input 1 hidden and 1 output layer. Now here is first of many things i cant get around :) 1. my height data is in form of 1.422, 1.5422 ... etc and the corresponding weight data is 90 95, but the NN takes the input as 0/1 or -1/1 and given the output in the same range. how to address this problem

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• How do you get your self focused with so many distractions around? (which you can't or don't want to

  - by Teja Kantamneni

  This question is definitely for a programmer and is centric towards a programmer. But if somebody feels it should not belong here I would not mind deleting it. I don't think this need to go as a WIKI, but if feel like it is a WIKI, I can do that too. The Question is: As a programmer you have to keep yourself up to date with the latest technologies and for that every programmer will generally follow some technology blogs and some social networking sites like (twitter, FB, SO, DZONE etc), how to keep your self focused on the things and still want to follow the technology trends? No Subjective or argumentative answers, Just want to know what practices other fellow programmers do for this...

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• Proper NSArray initialization for ivar data in a method

  - by Joost Schuur

  I'm new to Objective-C and iPhone development and have been using Apress' Beginning iPhone 3 Programming book as my main guide for a few weeks now. In a few cases as part of a viewDidLoad: method, ivars like a breadTypes NSArray are initialized like below, with an intermediate array defined and then ultimately set to the actual array like this: NSArray *breadArray = [[NSArray alloc] initWithObjects:@"White", @"Whole Weat", @"Rye", @"Sourdough", @"Seven Grain", nil]; self.breadTypes = breadArray; [breadArray release]; Why is it done this way, instead of simply like this: self.breadTypes = [[NSArray alloc] initWithObjects:@"White", @"Whole Weat", @"Rye", @"Sourdough", @"Seven Grain", nil]; Both seem to work when I compile and run it. Is the 2nd method above not doing proper memory management? I assume initWithObjects: returns an array with a retain count of 1 and I eventually release breadTypes again in the dealloc: method, so that wraps things up nicely. I'm guessing 'self.breadTypes = ...' copies the data to the new array, which is why the original array can be safely released, correct?

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• Cross Domain Post - Losing POST Data

  - by Tomas Beblar

  I have 2 servers, both running R2 / IIS7 / ASP Classic sites (can't get around any of that) Server A is making the follow calls: Dim objXMLHTTP, xml Set xml = Server.CreateObject("Msxml2.ServerXmlHTTP.6.0") xml.Open "POST", templateName, false xml.setRequestHeader "Content-Type", "application/xml" xml.Send variables Where the templateName is the URL of Server B (It's an email template) ... and variables are a name value pair string like a query string password=myPassword&customerEmail=Dear+Bob,.... Server B receives the POST but all the POST data (password=myPassword&customerEmail=Dear+Bob,....) is missing from the POST password = Request.Form("templatePassword") customerEmail = Request.Form("RackAttackCustomerEmail") The above values are all empty. Here's the kicker. This all worked on our old servers (Windows Server 2003, IIS 6) But when we migrated over, this stopped working correctly. My question is: What would cause the POST data to be dropped in IIS 7 when it all worked in IIS 6? I've done about 3 days of research into this trying many different things and nothing has worked. The POST data is just gone.

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• How do I export and import application services with say MEF?

  - by John Leidegren

  I'm working with MEF right now, but the answer I'm looking for probably is irrelevant to MEF -- it's all dependency injection -- I'm just using MEF terminology as an example here. Short background story, I read this article over at MSDN with focus on Composite Applications In this figure there's three things, the shell, the application services and the modules. So that's a composite application. What I don't fully get is the application services part. What's the service, what does it look like? How do you expose a service through a module and how do you consume a service from a different module? I'd really like to see some neat small code examples, nothing fancy but something to illustrate how all this comes to life (the application services part).

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• Can I get a dump of all my databases *except one* using mysqldump?

  - by Daniel Magliola

  I'm currently using mySQLdump to backup my dev machine and servers. There is one project I just started, however, that has a HUUUUUGE database that I don't really need backed up, and i'll be a big problem to add it to the rest of the backup cycle. I'm currently doing this: "c:\Program Files\mysql\MySQL Server 5.1\bin\mysqldump" -u root -pxxxxxx --all-databases g:\backups\MySQL\mysqlbackup.sql Is it possible to somehow specify "except this database(s)"? I wouldn't like to have to specify the list of DBs manually, since that would mean that I'd have to remember updating my backup batch file every time I create a new DB, and I know that's not gonna happen. EDIT: As you probably guessed from my command line above, i'm doing this on Windows, so I can't do any kind of fancy bash stuff, only wimpy .bat things. Alternatively, if you have other ideas to solve this same issue, they are more than welcome, of course! Thanks Daniel

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• Process-wide hook using SetWindowsHookEx

  - by mfya

  I need to inject a dll into one or more external processes, from which I also want to intercept keybord events. That's why using SetWindowsHookEx with WH_KEYBOARD looks like an easy way to achieve both things in a single step. Now I really don't want to install a global hook when I'm only interested in a few selected processes, but Windows hooks seem to be either global or thread-only. My question is now how I would properly go about setting up a process-wide hook. I guess one way would be to set up the hook on the target process' main thread from my application, and then doing the same from inside my dll on DLL_PROCESS_ATTACH for all other running threads (plus on DLL_THREAD_ATTACH for threads started later). But is this really a good way? And more important, aren't there any simpler ways to setup process-wide hooks? My idea looks quite cumbersome und ugly, but I wasn't able to find any information about doing this anywhere.

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• Can't get expand_aliases to take effect

  - by sachmet

  I can't get expand_aliases to take effect in bash. I've tried a lot of different things, and nothing works. Here's the simple test case: /bin/bash -c 'shopt -s expand_aliases; alias cdtmp="cd /tmp"; alias; cdtmp; pwd;' And the output: $ /bin/bash -c 'shopt -s expand_aliases; alias cdtmp="cd /tmp"; alias; cdtmp; pwd;' alias cdtmp='cd /tmp' /bin/bash: cdtmp: command not found /home/user $ /bin/bash --version GNU bash, version 3.2.25(1)-release (i686-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. (Yes, I'm using shopt instead of the -O option to bash, just to prove it's being done.) Any ideas?

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• Create a new embedded language using PHP

  - by dino beytar

  I am trying to develop an administration panel and I have a command line. When a user send a command like below, i need to recognize it using PHP. My aim is simplifying tasks in the admin panel. create page -attr1 90 -attr2 'page title'; or update category 90 -name 'Technology'; There are two main things: Verb and subject (ie. create page, update category) Attributes (can be both STRING and INT) and more complex example: create page -name EN:'Static Page' CA:'Staticna Stranica' -category 3,6,12,15; Where can I start to create this very small embedded language, or how can I do it well really? Clever answers, please.

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• Great projects, works, people in intersection of programming and art/music?

  - by jacob

  In a recent question I was introduced to the work of André Michelle, which blew me away. What other great people or works do you know in the fields of art and music? As someone with a love for math/programming and art/music I'd love to know more about people using sophisticated (or not so sophisticated) techniques to produce creative things. The software used can be anything from Max/MSP, Flash to simple C code or Assembler. Pointers to forums, blogs, newsletters and similar are very appreciated as well.

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• How to implement a countdown clock on a product launch web page?

  - by Daniel Earwicker

  I'm asking this on behalf of a certain corporation: http://www.microsoft.com/visualstudio/en-us/watch-it-live Things to bear in mind: It's 8:30 AM at different times depending on where you are in the world. For example, where I am, it is already 10 AM, whereas in Redmond it's still only 2 AM. That's probably the main thing, I guess. Can any SO users recommend ways to improve the existing countdown page so that it works correctly for users in any timezone? (Serious question - clearly this is a pit that is easy to fall into!)

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• Minimum & Maximum Values in Crystal Reports 2008 Column

  - by GregD

  Say I have this column returned in a command for Crystal: deposit_no 123 130 125 124 126 127 128 129 and I need to have this in the report title: Includes deposits between 123 - 130 I've tried a running formula for minimum and maximum and they aren't returning the correct values no matter how I manipulate them. I've tried evaluate for every record, on change of the deposit_no field, etc. I have no grouping on this report. Edited to add: While I preferred to handle this on the CR side of things, I changed my command to include what mson wrote below. So technically, mson had the correct answer.

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• Initializing "new users" in Rails

  - by mathee

  I'm creating a Ruby on Rails application, and I'm trying to create/login/logout users. This is the schema for Users: create_table "users", :force => true do |t| t.string "first_name" t.string "last_name" t.text "reputation" t.integer "questions_asked" t.integer "answers_given" t.string "request" t.datetime "created_at" t.datetime "updated_at" t.string "email_hash" t.string "username" t.string "hashed_password" t.string "salt" end The user's personal information (username, first/last names, email) is populated through a POST. Other things such as questions_asked, reputation, etc. are set by the application, so should be initialized when we create new users. Right now, I'm just setting each of those manually in the create method for UsersController: def create @user = User.new(params[:user]) @user.reputation = 0 @user.questions_asked = 0 @user.answers_given = 0 @user.request = nil ... end Is there a more elegant/efficient way of doing this?

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• Can a grails controller extend from a base class? How to make it so grails doesn't blow up?

  - by egervari

  I wrote a base class to help build my controllers more quickly and to remove duplication. It provides some helper methods, default actions and some meta programming to make these things easier to build. One of those methods in the base class is like this: def dynamicList(Class clazz) { def model = new LinkedHashMap() model[getMapString(clazz) + "s"] = list(clazz) model[getMapString(clazz) + "sTotal"] = count(clazz) model } The action that calls it, also in the base class, is this: def list = { dynamicList(clazz) } Unfortunately, when I go to list action in the controller subclass that inherits the base class when my application is deployed, I get this exception: groovy.lang.MissingMethodException: No signature of method: groovy.lang.MissingMethodException.dynamicList() is applicable for argument types: (java.lang.Class) values: [class project .user.User] at project.user.UserController$_closure1.doCall(UserController.groovy:18) at project.user.UserController$_closure1.doCall(UserController.groovy) at java.lang.Thread.run(Thread.java:619) How can I hit grails over the head and just tell it do what I want it to do? My controller unit tests run just fine, so grails' run-time is totally at fault :/ Ken

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• What C#/SQL Server feature did someone show you that made you say Wow!

  - by Randy Minder

  It's late Friday afternoon, and my mind is checking out for the week. So I thought I'd ask a light-hearted, interesting, question. Yesterday a co-worker showed me how he managed to save quite a bit of code and improve code reuse through the use of an anonymous delegate and the use of the Action function. My first thought was, "Wow, I had no idea you could do that!". I'm curious what sort of things someone showed you, either in c# or SQL Server, that made you stop and think, "Wow!". Randy

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• ASP.Net Web Site Project - Errors Not Caught at Compile time

  - by 5arx

  For the first time in my career, I'm working on an ASP.Net (v3.5) project that has been set up as a Visual Studio 2008/10 Web Site Project. I'm not keen on this way of working this way for various reasons but for the moment and until such time as the company sees the virtue in working in an environment with namespaces, designer and project files etc., I have to continue with the existing codebase. I've run into some odd issues since I began this but perhaps the oddest one of all is that althought VS lets me build the code, it doesn't reliably pick up compilation errors so these are not noticed until runtime. I know the website model allows dynamic/hot compilation when a request is made for a specific but I can't see why it wouldn't do this when I manually (F5) build/rebuild the project. Its immensely annoying as you can imagine and I can't find a workaround. Could any StackOverflow person help with suome suggestions to make things better?

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• What is the maximum number of virtualhosts Apache can handle?

  - by FractalizeR

  Hello. What is the maximum number of VirtualHosts Apache can handle on a single machine (I don't mean anything related to load, let's suppose it's irrelevant for the question). And we take only Apache without any proxifying things like nginx. I am asking because on one forum one guy reported that his Apache works unstable with the number of sites more than 400 on a single machine. If you have a config, that handles more than 400, please tell me here. Thanks.

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• jQuery .queue() not working as expected

  - by Andrew

  The page in question is right here: http://s289116086.onlinehome.us/lawjournaltv/index.php I'm 90% of the way there, I'm just assuming there's an error with my syntax. Focus on the blue callout area with "Workers' Compensation" as the title: Basically, I've created a little slideshow there with the controls at the top and when you click on any of them both the callout and the background are to slide. As you can see it's working now, but the problem is that I want the new background to slide in over the old one. I've tried several things including the queue() method, delay(), and adding everything else to the animate() callback with no success (right now the background goes black and then the new image slides in). You guys have never let me down before, so I'm hoping this is an easy fix. Thanks in advance!

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• Can a CLSID be different for the same program installed on two different machines?

  - by uberjumper

  I am using comtypes to generate wrappers for a certain com library. I am having certain issues with a few things, that are not being generated properly. I can get around this by doing the missing work, manually. However can i depend on the fact that CLSID's will not change? Lets say: I install a program with the com library Foo 1.0, now i install the exact same version of that program on another PC, will the CLSID's of the interfaces change? This might be a terribly dumb question.

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• How to limit a google calendar xml / rss feed by date range (not working!!)

  - by Phil

  For the life of me I cannot get my google calendar xml feed to only display events within a certain date range. I know that start-min and start-max are supposed to limit the output (according to these posts: (links to posts deleted because I am a newbie and can only post one hyperlink argh) BUT I CAN'T GET IT TO WORK. It keeps showing lot of things outside the range. I created a sample calendar and made it public. It is some events the first week of april. Can anyone show me how to construct a request that only returns those three events from the first week in april? I'll GLADLY and GRATEFULLY paypal $10 to anyone who helps me break through on this. Here is the calendar's public feed: http://www.google.com/calendar/feeds/66m31c36sj9u5k8kekrvt2lpr8%40group.calendar.google.com/public/basic

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• Pygame program that can get keyboard input with caps

  - by None

  I have a Pygame program that needs text input. The way it does this is to get keyboard input and when a key is pressed it renders that key so it is added to the screen. Essentially it acts like a text field. The problem is, when you hold shift it doesn't do anything. I relize this is because the program ignores shift input and instead writes the text if it's number is under 128. I have thought of setting a variable when shift is pressed then capitalizing if it was true, but string capitalization only woks on letters, not things like numbers or semicolons. Is there maybe a number I can add to the ascii number typed to modify it if shift is pressed, or something else?

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