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• What should I tell kids about how great it is to be a programmer?

  - by Sara Chipps

  I am putting a presentation together. I thought about illustrating with websites like Facebook, and MySpace. Does anyone have children around that age that could tell me what they are into? How to hold their attention? Ways to illustrate what we do? Get them interested? Your ideas are greatly appreciated, I really want to be able to convey how fun this is :). I don't have access to a digital projector... which really stinks. I do have access to an old transparency overhead, though. http://stackoverflow.com/questions/207278/career-day-how-do-i-make-computer-programmer-sound-cool-to-8-year-olds

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• Getting normal information from OpenGL render output

  - by okamiueru

  I'll try to keep this simple. I want a way to access the normal information of the scene, from the Frame Buffer output (or similar). The same way one is able to access the Depth Buffer using glGetTexImage and GL_DEPTH_COMPONENT. I know I could set up a fragment shader which outputs the normal information in RGB color space, which could in turn be read from the rendered image. I'm wondering however if there is a way to do this within the openGL API. I'll clarify anything upon request as best as I can, Thank you

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• Lighttpd + fastcgi + python (for django) slow on first request

  - by EagleOne

  I'm having a problem with a django website I host with lighttpd + fastcgi. It works great but it seems that the first request always takes up to 3seconds. Subsequent requests are much faster (<1s). I activated access logs in lighttpd in order to track the issue. But I'm kind of stuck. Here are logs where I 'lose' 4s (from 10:04:17 to 10:04:21): 2012-12-01 10:04:17: (mod_fastcgi.c.3636) handling it in mod_fastcgi 2012-12-01 10:04:17: (response.c.470) -- before doc_root 2012-12-01 10:04:17: (response.c.471) Doc-Root : /var/www 2012-12-01 10:04:17: (response.c.472) Rel-Path : /finderauto.fcgi 2012-12-01 10:04:17: (response.c.473) Path : 2012-12-01 10:04:17: (response.c.521) -- after doc_root 2012-12-01 10:04:17: (response.c.522) Doc-Root : /var/www 2012-12-01 10:04:17: (response.c.523) Rel-Path : /finderauto.fcgi 2012-12-01 10:04:17: (response.c.524) Path : /var/www/finderauto.fcgi 2012-12-01 10:04:17: (response.c.541) -- logical -> physical 2012-12-01 10:04:17: (response.c.542) Doc-Root : /var/www 2012-12-01 10:04:17: (response.c.543) Rel-Path : /finderauto.fcgi 2012-12-01 10:04:17: (response.c.544) Path : /var/www/finderauto.fcgi 2012-12-01 10:04:21: (response.c.128) Response-Header: HTTP/1.1 200 OK Last-Modified: Sat, 01 Dec 2012 09:04:21 GMT Expires: Sat, 01 Dec 2012 09:14:21 GMT Content-Type: text/html; charset=utf-8 Cache-Control: max-age=600 Transfer-Encoding: chunked Date: Sat, 01 Dec 2012 09:04:21 GMT Server: lighttpd/1.4.28 I guess that if there is a problem, it's whith my configuration. So here is the way I launch my django app: python manage.py runfcgi method=threaded host=127.0.0.1 port=3033 And here is my lighttpd conf: server.modules = ( "mod_access", "mod_alias", "mod_compress", "mod_redirect", "mod_rewrite", "mod_fastcgi", "mod_accesslog", ) server.document-root = "/var/www" server.upload-dirs = ( "/var/cache/lighttpd/uploads" ) server.errorlog = "/var/log/lighttpd/error.log" server.pid-file = "/var/run/lighttpd.pid" server.username = "www-data" server.groupname = "www-data" accesslog.filename = "/var/log/lighttpd/access.log" debug.log-request-header = "enable" debug.log-response-header = "enable" debug.log-file-not-found = "enable" debug.log-request-handling = "enable" debug.log-timeouts = "enable" debug.log-ssl-noise = "enable" debug.log-condition-cache-handling = "enable" debug.log-condition-handling = "enable" fastcgi.server = ( "/finderauto.fcgi" => ( "main" => ( # Use host / port instead of socket for TCP fastcgi "host" => "127.0.0.1", "port" => 3033, #"socket" => "/home/finderadmin/finderauto.sock", "check-local" => "disable", "fix-root-scriptname" => "enable", ) ), ) alias.url = ( "/media" => "/home/user/django/contrib/admin/media/", ) url.rewrite-once = ( "^(/media.*)$" => "$1", "^/favicon\.ico$" => "/media/favicon.ico", "^(/.*)$" => "/finderauto.fcgi$1", ) index-file.names = ( "index.php", "index.html", "index.htm", "default.htm", " index.lighttpd.html" ) url.access-deny = ( "~", ".inc" ) static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" ) ## Use ipv6 if available #include_shell "/usr/share/lighttpd/use-ipv6.pl" dir-listing.encoding = "utf-8" server.dir-listing = "enable" compress.cache-dir = "/var/cache/lighttpd/compress/" compress.filetype = ( "application/x-javascript", "text/css", "text/html", "text/plain" ) include_shell "/usr/share/lighttpd/create-mime.assign.pl" include_shell "/usr/share/lighttpd/include-conf-enabled.pl" If any of you could help me finding out where I lose these 3 or 4 s. I would much appreciate. Thanks in advance!

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• Property Scope (Iphone)

  - by Hank

  Hello All. I am having trouble accessing a declared property and I think I am missing something fundamental about the nature of properties and perhaps view controllers. Here's what I'm doing so far: declaring a property "myPhone" in a root view controller called RootViewController. grabbing a phone number from a modally presented people picker setting "myPhone" to the value from the people picker (from within shouldContinueAfterSelectingPerson of ABPeoplePickerNavigationController) trying to access "myPhone" from another modally presented view controller "myPhone" continues to NSLog to null despite trying every permutation of self.myPhone, super, RootViewController, etc. to try and access the value I set. What am I missing?

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• Do MySQL Locked Tables affect related Views?

  - by CogitoErgoSum

  So after reading http://stackoverflow.com/questions/1415602/performance-in-pdo-php-mysql-transaction-versus-direct-execution in regards to performance issues I was thinking about I did some research on locking tables in MySQL. On http://dev.mysql.com/doc/refman/5.0/en/table-locking.html Table locking enables many sessions to read from a table at the same time, but if a session wants to write to a table, it must first get exclusive access. During the update, all other sessions that want to access this particular table must wait until the update is done. This part struck me particularly becuase most of our queries will be updates rather than inserts. I was wondering if one created a table called foo on which all updates/inserts were carried out and then a view called foo_view (A copy of foo, or perhaps foo and a linkage of several other tables plus foo) on which all selects occured, would this locking issue still occur? That is, would SELECT quries on foo_view still have to wait for an update to finish on foo?

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• Samsung UMPC, Built in Camera doesn't support DirectX how can I use it?

  - by Markive

  The Samsung Q1 Ultra, is the perfect device for my software except that the built in camera seems to be incompatible with standard DirectX drivers, so my .Net camera implementation can't use the device. I have limited experience in this area.. Even Skype can't access this camera, but a little program from Samsung can.. I've looked at the program's assemblies and it's too obfuscated to see inside so I can't see anyway to use them.. What sort of camera could this be? Are there any .Net classes / implementations I can use to access this camera?

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• How can I sqldump a huge database?

  - by meder

  SELECT count(*) from table gives me 3296869 rows. The table only contains 4 columns, storing dropped domains. I tried to dump the sql through: $backupFile = $dbname . date("Y-m-d-H-i-s") . '.gz'; $command = "mysqldump --opt -h $dbhost -u $dbuser -p $dbpass $dbname | gzip > $backupFile"; However, this just dumps an empty 20 KB gzipped file. My client is using shared hosting so the server specs and resource usage aren't top of the line. I'm not even given ssh access or access directly to the database so I have to make queries through PHP scripts I upload via FTP ( SFTP isn't an option, again ). Is there some way I can perhaps sequentially download portions of it, or pass an argument to mysqldump that will optimize it? I came across http://jeremy.zawodny.com/blog/archives/000690.html which mentions the -q flag and tried that but it didn't seem to do anything differently.

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• list all functions on CRAN

  - by baptiste

  Suppose I'm trying to run a script of unknown origin, and one of the functions is from a package that is not loaded by the script (an oversight, maybe it was loaded in the .Rprofile of the person who wrote it). How can I find in which package this function resides? There's some information compiled on CRAN, that doesn't require the user to download/install all R packages locally; however as far as I could tell it only gives access to the DESCRIPTION files. RSiteSearch, and its web equivalent, seem to access an online database of all CRAN packages, where presumably a list of all functions would be available. Is there some way of accessing this information? Thanks. Edit: I know sos::findFn, utils::RSiteSearch and search.r-project; what I would like is to get the raw data that these tools use.

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• What language is better suited for P2P video streaming?

  - by Roman

  I would like to write a Skype like software which allows P2P video/audio streaming. What language is better suited for that? There are several requirements: Software should be easy to install. It should be easy to program. I want to have access to video information. For example to make a face expression recognition on the fly. It should be free. I am thinking of Python and Java. Which one would be better? Or may be there is a third choice which is better? ADDED Flash is an attractive option since users can use their browser in which flash is installed by default and if not, it's easy to install flash. But I do not know if I can have access to video (if I want to do some processing). Moreover, Flash is not free.

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• Check user authentication at page load

  - by Shrewd Demon

  ok i have another question ! (god! i have so many questions) i have an application and a user must log-in before he/she can access pages. now once the user logs in i keep the user details in a session variable (say Session["CurrentUser"]). now if a user tries to jump to a page directly i will check if the Session["CurrentUser"] has a value or not...if not then the user will be directed to the login page... my problem is that i have done this or rather say written this "Checking Code" on almost all the pages. what i want is this code to stay on a particular location and i will just access that method all the time on all the pages...now where should i write this method ?? thank you.

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• Accessing XML/PHP with period in tag

  - by LuckyShot

  Hi guys, Quick newbie question here, how do I access totalResults? XML <?xml version="1.0" encoding="UTF-8"?> <OpenSearchDescription> <opensearch:totalResults>1</opensearch:totalResults> <posts> <post> <score>10</score> </post> </posts> </OpenSearchDescription> To access the score I would do this: PHP $xmlObj = simplexml_load_string($theXMLabove); echo $xmlObj->posts->post[0]->score; But none of these work for the totalResults: echo $xmlObj->opensearch:totalResults; echo $xmlObj->opensearch->totalResults; Sorry for asking such a lame question... Documentation on how to traverse XML with PHP is also appreciated :) Thanks!

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• PHP: get contents of a remote webpage that require authentication?

  - by powerboy

  I receive many emails whose contents are of the same pattern, e.g. Name: XXX Phone: XXX Bio: XXX ...... I want to write a PHP script to parse these emails and save the data into a database. I tried to use file_get_contents() to get the contents of these emails. The problem is that, it requires authentication to access to my emails. Even though I have signed into my email account on the server (localhost actually), file_get_contents() still return the webpage that prompts me to sign in. So how to access the contents of my emails with a PHP script? EDIT: it is a gmail account.

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• Why is the Dependency Property not returning its value?

  - by B-Rad

  I have a MyUserControl with the following Xaml: <TextBox Text="{Binding InputValueProperty}" /> In the MyUserControl.xaml.cs I have: public string InputValue { get { return (string)GetValue(InputValueProperty); } set { SetValue(InputValueProperty, value); } } public static readonly DependencyProperty InputValueProperty = DependencyProperty.Register("InputValueProperty", typeof(string), typeof(MyUserControl)); In my MainWindow.xaml I create a user control: <local:MyUserControl InputValue="My Input" /> Later on in my MainWindow.xaml.cs I am trying to access this string. All instances of MyUserControl are contained in a List and I access them with a foreach. string temp = userControl.InputValue; This is always null. In my MainWindow.xaml I can see the "My Input" in the text box of the user control but I can't ever seem to get it out of there.

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• How to select the previous element of a given class

  - by JCN

  I have an UL list : <ul> <li data-sel='foo'></li> <li></li> <li data-sel='foo'></li> <li class='selected'></li> <li data-sel='foo'></li> </ul> I can access the first previous element of li.selected who do not have attribute data-sel=foo by using :not selector var element = $('.selected').prev("li:not([data-sel='foo'])"); But how can i access the first previous element of li.selected who have attribute data-sel=foo ?

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• iPhone: membership

  - by Rupesh

  hi all, in .Net we can use membership provider See Membership provider Whether there are any equivalent in iPhone or is it possible to access these provider through iPhone API

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• Secure way to backup MySQL databases?

  - by user203538

  What is the best/secure way to backup a mysql database on windows server (2008)? I have "MySQL Administrator" but that requires that you save passwords for backup project. I'm not keen on doing as anyone gaining access to the server would then have easy access to the database. Can you do anything similar to SQL Server like using Windows authentication. If not what is the most secure (and practical) way of backups. Lastly, what are the privileges needed to backup a database? I have created a single user just for this task. Please advise.

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• Identifying the view selected in a ContextMenu (Android)

  - by Casebash

  In Android, onContextItemSelected has a single MenuItem argument and so it isn't clear how to identify the view selected. MenuItem.getMenuInfo provides access to Contextmenu.ContextMenuInfo, but while both known subclasses provide access to the target view, there does not appear to be an accessor on the interface. One alternative is to save the View provided in onCreateContextMenu in a private class variable which relies on onCreateContextMenu not being called again in the activity before onContextItemSelected. Another is to use the id of the View for the itemId argument of ContextMenu.add. If we do this, we would then need to identify the option selected from the context menu by using its (possibly internationalised) title. What is the best method for identifying the View selected in onContextSelected?

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• Django ORM dealing with MySQL BIT(1) field

  - by Carles Barrobés

  In a Django application, I'm trying to access an existing MySQL database created with Hibernate (a Java ORM). I reverse engineered the model using: $ manage.py inspectdb > models.py This created a nice models file from the Database and many things were quite fine. But I can't find how to properly access boolean fields, which were mapped by Hibernate as columns of type BIT(1). The inspectdb script by default creates these fields in the model as TextField and adds a comment saying that it couldn't reliably obtain the field type. I changed these to BooleanField but it doesn't work (the model objects always fetch a value of true for these fields). Using IntegerField won't work as well (e.g. in the admin these fields show strange non-ascii characters). Any hints of doing this without changing the database? (I need the existing Hibernate mappings and Java application to still work with the database).

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• Design guide-lines for writing a Typed SQL Statement API ?

  - by this. __curious_geek

  Last night I came up to sometihng intersting while designing my new project that brought me to ask this qustion here. My project is supposed to follow Table Gateway pattern using tradional ADO.Net datasets for data access. I don't want to write plain queries in my data-access classes. So I came up with an idea of writing a parser kindaa api that exposes objects and methods to generate queries on the move based on my domain objects. Later I want this api to hook up to my Business objects and provide Typed SQL generator api right on the business object instances. Any idea or references how can I do this ? This seems very wide to start with that I'm compelled take your opinions here. Does there anything already exists that can do this ?

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• what is bad about this TextWriter method?

  - by Alexander

  the tf.txt file has 0 bytes and when calling this method several times over the loop I get: the process cannot access " " because it is being used by another process

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• Stored Procedure Permissions Problem

  - by JimR

  I have migrated a set of SQL 2000 databases to SQL 2008. Most is working well, however I have some stored procedures that scheduled and run by SQL Server Agent jobs that are giving me troubles. Many of the scheduled stored procedures work, but the stored procs that access a database other than the default databases are failing with the following message: Executed as user: XYZ\YadaYada. The server principal: "XYZ\YadaYada" is not able to access the database "MyOtherDatabaseOnSameServer" under the current security context. [SQL STATE 08004](Error 619) The step failed. Obviously, I changed the names to protect the guilty. The account is a user in all of the relavent databases and is a memeber of db_owner, db_datareader, and db_datawriter. When I run these same procedures from a query window in SMS using the same accounts (I have tried many) they work fine. What am I missing?

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• Is It Safe to Cast Away volatile?

  - by Yan Cheng CHEOK

  Most of the time, I am doing this way. class a { public: ~ a() { i = 100; // OK delete (int *)j; // Compiler happy. But, is it safe? // Error : delete j; } private: volatile int i; volatile int *j; }; int main() { a aa; } However, I saw an article here: https://www.securecoding.cert.org/confluence/display/seccode/EXP32-C.+Do+not+access+a+volatile+object+through+a+non-volatile+reference Casting away volatile allows access to an object through a non-volatile reference. This can result in undefined and perhaps unintended program behavior. So, what will be the workaround for my above code example?

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• Backdoor Strategy- opinion needed.

  - by the Hampster

  I'm creating an application to track publications and grants for a university. Professors will need to put they CV into the system when it is up and running. Yeah, right. The person in charge is planning on hiring someone to input all of the information, but my questions is how? The strategy I'm thinking of is to install a backdoor. The lucky undergrad can log in as any professor using the backdoor. Once all the data is removed, the backdoor can be removed. Doing so would probably be as simple as editing out a comment in the config file. The IT guys would still have access, but since they control the machines, they would have access anyway. Are there any flaws to this strategy?

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• apache on windows virtual directory config help

  - by sprugman

  I'm running Apache on Windows XP via Xampplite, and could use help configuring my virtual directory. Here's what I'm hoping to do on my dev box: I want my source files to live outside of the xampp htdocs dir on my local machine I can access the project at http://myproject others on my local network can access the project at my.ip.address/myproject keep localhost pointing to the xampp's htdocs folder so I can easily add other projects. I've got 1 & 2 working by editing the windows hosts file, and adding a virtual directory in xampp's apache\conf\extra\httpd-vhosts.conf file. I don't immediately see how to do 3 without messing up 4.

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• What is your "generic" web application testing plan ?

  - by mathieu

  Like, testing for : invalid inputs (strings containing "'"s) giving random id's in url parameters to access "unauthorized" pages prevent sql injection ...

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