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• Port a live system from App Engine Helper to App Engine Patch

  - by Alexander

  I am running a live system that is currently serving about 20K pages a day which is based on App Engine Helper (Python) with session support provided by AppEngine utilities. One problem that I have been having is that sessions are occasionally randomly logging out. I would like to try using the App Engine Patch, since it has "native" django session support, but I am worried that this is possibly going to be like doing a brain transplant. Specifically, current database models are all inhereted from BaseModel provided by the App Engine Helper. While, App Engine Patch does not have this inheritance. Does anyone know if it is possible to migrate a live system from App Engine Helper to App Engine Patch? If so, do you have any advice or warnings that I should heed, before attempting this transition? Thank you and kind regards Alex

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• How to parse text fragments located after tag by simplehtmldom?

  - by moogeek

  Hello! I'm using simplehtmldom to parse html and i'm stuck in parsing plaintext that is located outside of any tag (but between two different tags): <div class="text_small"> <b>?dress:</b> 7 Hange Road<br> <b>Phone:</b> 415641587484<br> <b>Contact:</b> Alex<br> <b>Meeting Time:</b> 12:00-13:00<br> </div> Is it possible to get this values of Adress, Phone, Contact, Meeting Time? I wonder if there is a opportunity to pass CSS Selectors into nextSibling/nextSibling functions...

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• javascript regex: match altered version of first match with only one expression

  - by theseion

  Hi there I'm writing a brush for Alex Gorbatchev's Syntax Highlighter to get highlighting for Smalltalk code. Now, consider the following Smalltalk code: aCollection do: [ :each | each shout ] I want to find the block argument ":each" and then match "each" every time it occurrs afterwards (for simplicity, let's say every occurrence an not just inside the brackets). Note that the argument can have any name, e.g. ":myArg". My attempt to match ":each": \:([\d\w]+) This seems to work. The problem is for me to match the occurrences of "each". I thought something like this could work: \:([\d\w]+)|\1 but the right hand side of the alternation seems to be treated as an independent expression, so backreferencing doesn't work. So my question is: is it even possible to accomplish what I want in a single expression? Or would I have to use the backreference within a second expression (via another function call)? Cheers.

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• how to select the min value using having key word

  - by LOVE_KING

  I have created the table stu_dep_det CREATE TABLE `stu_dept_cs` ( `s_d_id` int(10) unsigned NOT NULL auto_increment, `stu_name` varchar(15) , `gender` varchar(15) , `address` varchar(15),`reg_no` int(10) , `ex_no` varchar(10) , `mark1` varchar(10) , `mark2` varchar(15) , `mark3` varchar(15) , `total` varchar(15) , `avg` double(2,0), PRIMARY KEY (`s_d_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC AUTO_INCREMENT=8 ; then Inserted the values INSERT INTO `stu_dept_cs` (`s_d_id`, `stu_name`, `gender`, `address`, `reg_no`, `ex_no`, `mark1`, `mark2`, `mark3`, `total`, `avg`) VALUES (1, 'alex', 'm', 'chennai', 5001, 's1', '70', '90', '95', '255', 85), (2, 'peter', 'm', 'chennai', 5002, 's1', '80', '70', '90', '240', 80), (6, 'parv', 'f', 'mumbai', 5003, 's1', '88', '60', '80', '228', 76), (7, 'basu', 'm', 'kolkatta', 5004, 's1', '85', '95', '56', '236', 79); I want to select the min(avg) using having keyword and I have used the following sql statement SELECT * FROM stu_dept_cs s having min(avg) Is it correct or not plz write the correct ans....

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• Emacs, Cedet and semantic

  - by synasius

  Hello everyone, I've configured CEDET for emacs following Alex article (great!!). Now, the questions: 1 - i've generated GTAGS with Gnu Global in my /usr/include, how can i check if semantic is using GTAGS? 2 - can I keep my GTAGS in another directory and instruct semantic to use that dir?? 3 - In c/c++ sources, completion on include statement (from system headers) doesn't list all available headers. Ok, this is a stupid problem.. but makes me think something is not working right Thanks for your help!

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• emacs cedet set up doubt

  - by trybeingarun

  Hi, I installed cedet successfully today and got most of it working; thanks to Alex Ott's Gentle Introduction to Cedet. However i am having a problem When I give the exact path relative to the current file i am working on then auto-completion is working fine. #include "../../opensource/inc/lldp_port.h" void test_func() { lldp_port port; port.blah //here auto-completion worked fine } However i cannot specify the full path all the time( we have eclipse at office and it generates makefiles for us ) #include "lldp_port.h" void test_func() { lldp_port port; port. //here auto-completion does not work :( } What should i do to solve this?

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• importing an existing x509 certificate and private key in Java keystore to use in ActiveMQ ssl context

  - by Aleksandar Ivanisevic

  I have this in activemq config <sslContext> <sslContext keyStore="file:/home/alex/work/amq/broker.ks" keyStorePassword="password" trustStore="file:${activemq.base}/conf/broker.ts" trustStorePassword="password"/> </sslContext> I have a pair of x509 cert and a key file How do I import those two to be used in ssl and ssl+stomp connectors? All examples i could google always generate the key themselves, but I already have a key. I have tried keytool -import -keystore ./broker.ks -file mycert.crt but this only imports the certificate and not the key file and results in 2009-05-25 13:16:24,270 [localhost:61612] ERROR TransportConnector - Could not accept connection : No available certificate or key corresponds to the SSL cipher suites which are enabled. I have tried concatenating the cert and the key but got the same result How do I import the key?

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• Fastest way to list all primes below N in python

  - by jbochi

  This is the best algorithm I could come up with after struggling with a couple of Project Euler's questions. def get_primes(n): numbers = set(range(n, 1, -1)) primes = [] while numbers: p = numbers.pop() primes.append(p) numbers.difference_update(set(range(p*2, n+1, p))) return primes >>> timeit.Timer(stmt='get_primes.get_primes(1000000)', setup='import get_primes').timeit(1) 1.1499958793645562 Can it be made even faster? EDIT: This code has a flaw: Since numbers is an unordered set, there is no guarantee that numbers.pop() will remove the lowest number from the set. Nevertheless, it works (at least for me) for some input numbers: >>> sum(get_primes(2000000)) 142913828922L #That's the correct sum of all numbers below 2 million >>> 529 in get_primes(1000) False >>> 529 in get_primes(530) True EDIT: The rank so far (pure python, no external sources, all primes below 1 million): Sundaram's Sieve implementation by myself: 327ms Daniel's Sieve: 435ms Alex's recipe from Cookbok: 710ms EDIT: ~unutbu is leading the race.

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• Dynamically create sprite images for Cocos2d-iPhone

  - by AlexChilcott

  Hey guys, I'm working on a platformer, and looking for a way to create a sprite for an arbitrarily sized platform. For example, I may know I have a platform that should appear 200 pixels wide by 32 pixels high, and, say, I have a texture of bricks that I can tile to fill that area. I may also want to draw a black border around the platform. Is this possible at all? Anyone have any ideas for how I might go about doing this? I could always try generating the image on the fly and building a sprite with that image, but I sincerely doubt (hope) that this isn't the most efficient way of doing something like this. Cheers, Alex

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• Tag a process with a string

  - by AlexDrenea

  Hi guys, I am trying to reproduce Process Exporer's feature to tag a process running on the current machine with a Comment (Please see the Comment section in the Process properties in Process Explorer). I couldn't find any way to do it with managed code, had a try with wmic utility but I wasn't able to find a way to set a property to an existing process. Also, searching the web returns some pretty vague responses since all the search terms are so general.. If anybody has at least a hint I will appreciate it. Alex. P.S I am using C# for the project but I am opened to use unmanaged code if that's what it takes :)

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• [java] Trying to use ResourceBundle to fetch messages from external file

  - by bumperbox

  Essentially I would like to have a messages.properties files external to the jar files in my application. So that users can add languages and edit the files easily if my translations are wrong at the moment i use ResourceBundle.getBundle("package.MessageBundle"); But i would like to do something like this ResourceBundle.getBundle("lang/MessageBundle"); Where lang is a folder under my application installation directory. is this a good idea (if not, why not)? can someone point me in the right direction, or some sample code that does this thanks Alex

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• get a list of function names in a shell script

  - by n-alexander

  I have a Bourne Shell script that has several functions in it, and allows to be called in the following way: my.sh <func_name> <param1> <param2> Inside func_name() will be called with param1 and param2. I want to create a "help" function that would just list all available functions, even without parameters. The question: how do I get a list of all function names in a script from inside the script? I'd like to avoid having to parse it and look for function patterns. Too easy to get wrong. Thanks, Alex

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• Silverlight 4 Drag and Drop Alternatives

  - by Eric J.

  I want to add the ability to drag a user control from one part of a Silverlight 4 page onto another user control on the same page (not talking about the new Silverlight 4 ability to drag a file from the OS onto the page). What approach is most straightforward? What approach offers the most flexibility? Here are some alternatives I found so far SO drag-and-drop-control-for-silverlight. Same question but answers apply to SL 2. Alex van Beek's DragManager. Written for SL3. Silverlight Drag Drop. Also written for SL3.

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• Relative to absolute paths in HTML (asp.net)

  - by Jo Asakura

  Hello all, I need to create a newsletters by URL. I to do next: Create a WebClient; Use WebClient's method DownloadData to get a source of page in byte array; Get string from source-html byte array and set it to the newsletter content. But I have some troubles with paths. All elements' sources were relative (/img/welcome.png) but I need absolute (http://www.mysite.com/img/welcome.png). How can I do this? Best regards, Alex.

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• How to import text file to table with primary key as auto-increment

  - by webworm

  I have some bulk data in a text file that I need to import into a MySQL table. The table consists of two fields .. ID (integer with auto-increment) Name (varchar) The text file is a large collection of names with one name per line ... (example) John Doe Alex Smith Bob Denver I know how to import a text file via phpMyAdmin however, as far as I understand, I need to import data that has the same number of fields as the target table. Is there a way to import the data from my text file into one field and have the ID field auto-increment automatically? Thank you in advance for any help.

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• Why LINQ will work this way?

  - by Benny

  public static ArrayList GetStudentAsArrayList() { ArrayList students = new ArrayList { new Student() { RollNumber = 1,Name ="Alex " , Section = 1 ,HostelNumber=1 }, new Student() { RollNumber = 2,Name ="Jonty " , Section = 2 ,HostelNumber=2 }, }; return students; } this doesn't compile: ArrayList is not IEnumerable ArrayList lstStudents = GetStudentAsArrayList(); var res = from r in lstStudents select r; but this will compile: ArrayList lstStudents = GetStudentAsArrayList(); var res = from Student r in lstStudents select r; Can anybody explain? what's the magic here?

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• Link all'interno di un campo testo

  - by aleds

  Ciao a tutti, nella Rails app che sto realizzando, l'utente ha la possibilita' di inserire un post (campo memo) con all'interno una URL. Ad esempio: "bla bla bla bla www.blabla.com bla bla bla ..." Nel mostrare tale post vorrei che www.blabla.com diventasse un link cliccabile (come avviene in twitter). Ovviamente deve essere fatto un parsing della url, immagino usando le espressioni regolari. Avete dei consigli in merito ? Esiste qualcosa di gia' fatto oppure inizio da subito a scrivere il codice :) ? Grazie Alessandro DS http://alex-on-rails.blogspot.com/

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• Flags with border on hover

  - by Alpan67

  Hello I have 3 flags (Italian, german, english) with the purpose to change language for the whole site in future. How can I make a border on a hover effect that could alxo work with IE ? this is the CCS .miniflags { float:right margin : 5px 20px; padding-right:10px; } and here the HTML <div id="bandiere"> <a><img src="ita.png" class="miniflags" /></a> <a><img src="ger.png" class="miniflags" /></a> <a><img src="eng.png" class="miniflags" /></a> </div> Thanx for help Alex

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• Perl open file problem

  - by alexBrand

  I am having some trouble trying to print from a file. Any ideas? Thanks open(STDOUT,">/home/int420_101a05/shttpd/htdocs/receipt.html"); print "alex"; close(STDOUT); open(INF,"/home/int420_101a05/shttpd/htdocs/receipt.html"); $emailBody = <INF>; close(INF); print $emailBody; ERRORS: Filehandle STDOUT reopened as INF only for input at ./test.c line 6. print() on closed filehandle STDOUT at ./test.c line 9.

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• LINQ: why does this query not work on an ArrayList?

  - by Benny

  public static ArrayList GetStudentAsArrayList() { ArrayList students = new ArrayList { new Student() { RollNumber = 1,Name ="Alex " , Section = 1 ,HostelNumber=1 }, new Student() { RollNumber = 2,Name ="Jonty " , Section = 2 ,HostelNumber=2 } }; return students; } The following code doesn't compile. The error is ArrayList is not IEnumerable ArrayList lstStudents = GetStudentAsArrayList(); var res = from r in lstStudents select r; This compiles: ArrayList lstStudents = GetStudentAsArrayList(); var res = from Student r in lstStudents select r; Can anybody explain what the difference is between these two snippets? Why the second works?

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• Django and ajax image file upload errors and csrf

  - by sharkfin

  I tried out Alex Kuhl's ajax script to upload images to Django 1.4. My first question is why I'm getting an empty page with firebug telling me I have two errors: fileuploader.js (line 4): syntax error <!DOCTYPE html> In my template html: qq is not defined var uploader = new qq.FileUploader( { Here is my entire html file for it: http://pastebin.com/NjbV5gMn This post suggests that either some script has 404'd or the src attribute is empty, which would cause the doctype error. But that doesn't seem to be the case here. As for why qq is not defined, I'm not sure what is wrong. Django can clearly find the fileuploader.js just fine from my static folder. My second question is why the ajax code uses {{ csrf_token }} instead of {% csrf_token %}. But if I use {% csrf_token %}, I get the firebug error: missing } after property list 'csrf_token': '<div style='display:none'<input type='hidden' name='csrfmiddlewaretoken' value='Cx0zFFak6OLgrHiAnFa3k4BPDmn4BgoT' /</div',

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• django search and filter in Google App Engine

  - by alexarsh

  Hi, I'm trying to add filter and search to my site. It's exactly the same code as in another working django project. The difference is that this time I do it with app engine. my views: http://slexy.org/view/s21GMw2sh1 I have 2 problems: 1.) I get error: "'Query' object has no attribute 'all'" on line 59 in views. As I understand it's something to do with the fact that GAE queryset is different from django queryset. How can I fix that? 2.) If I have 'search' in my request.GET I also fall on line 54 in my views. This is because I can't search by Q object in GAE, I guess. How can I fix that? Thanks, Alex A.

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• Drupal 7: cancel user registration if a wrong field value has been submitted.

  - by Alexander Farber

  Hello, I have a Drupal 7 with 1 field added to registration form - a List with possible values Robot / Male / Female: # select * from field_data_field_gender; entity_type | bundle | deleted | entity_id | revision_id | language | delta | field_gender_value -------------+--------+---------+-----------+-------------+----------+-------+-------------------- user | user | 0 | 6 | 6 | und | 0 | Male user | user | 0 | 5 | 5 | und | 0 | Male user | user | 0 | 7 | 7 | und | 0 | Female user | user | 0 | 1 | 1 | und | 0 | Male The first value Robot is a default value - to prevent SPAM robots from registering at my site. Is there a way to cancel user registration, when a new user submits the registration web form with the default Robot value? (i.e. only Male and Female values are allowed). I've looked at the core Trigger module, but don't see anything suitable there. I've looked at the hook_user_presave and hook_user_insert API docs, but don't see a way there to cancel an ongoing user registration. (I was expecting to do that by returning a special value from those methods...) Thank you! Alex

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• Powershell: error handling with try and catch

  - by resolver101

  I'm writing a script and want to control the errors. However im having trouble finding information on error handling using the try, catch. I want to catch the specific error (shown below) and then perform some actions and resume the code. What code is needed for this? This is the code i am running and im entering in a invalid username when prompted. Get-WMIObject Win32_Service -ComputerName localhost -Credential (Get-Credential) Get-WmiObject : User credentials cannot be used for local connections At C:\Users\alex.kelly\AppData\Local\Temp\a3f819b4-4321-4743-acb5-0183dff88462.ps1:2 char:16 + Get-WMIObject <<<< Win32_Service -ComputerName localhost -Credential (Get-Credential) + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], ManagementException + FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

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• Trying to test space in filesystem on Unix

  - by Buzkie

  I need to check if I Filesystem exists, and if it does exist there is 300 MB of space in it. What I have so far: if [ "$(df -m /opt/IBM | grep -vE '^Filesystem' | awk '{print ($3)}')" < "300" ] then echo "not enough space in the target filesystem" exit 1 fi This throws an error. I don't really know what I'm doing in shell. My highest priority is AIX but I'm trying to get it to work for HP and Sun too. Please help. -Alex

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