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  • Doing a count over a filter query efficiently in django

    - by apple_pie
    Hello, Django newbie here, I need to do a count over a certain filter in a django model. If I do it like so: my_model.objects.filter(...).count() I'm guessing it does the SQL query that retrieves all the rows and only afterwards does the count. To my knowledge it's much more efficient to do the count without retrieving those rows like so "SELECT COUNT(*) FROM ...". Is there a way to do so in django?

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  • HIde Word with javascript

    - by manndaar
    Hello, I am not developer so I need help from you guys. My Problem is simple. I just want javascript to hide word before "." Example : say for google.com I just want word ".com" tobe print. Please note that my content is dynamic so google.com will keep changing everytime to google.net or yahoo.com...... so on.. Thanx in advanced.

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  • vim c++ break line

    - by Myx
    Hello: How can I break long lines when writing c++ code in vim? For example, if I have something like 56 fprintf(stderr, "Syntax error reading recursion value on 57 line %d in file %s\n", line_count, filename); I get the following compile errors: :56:25: warning: missing terminating " character :56: error: missing terminating " character :57: error: stray ‘\’ in program :57:37: warning: missing terminating " character :57: error: missing terminating " character I'm a vim newbie. Thanks!

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  • SharePoint (2010): Field for (multi) currency...?

    - by TomTom
    Hello, old problem now getting new. Anyone has a good idea for storing currency values in a sharepoint list? Problem is - there is a currency field, but it is not multi-currency enabled. I could obviously store the value in two fields (currency lookup from a list, value in second field), but I take it as wondering whether there is a more viable approach that.

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  • User oriented regex library for java

    - by Maxim Veksler
    Hello, I'm looking for a library that could perform "easy" pattern matching, a kind of pattern that can be exposed via GUI to users. It should define a simple matching syntax like * matches any char and alike. In other words, I want to do glob (globbing) like sun's implemented logic http://openjdk.java.net/projects/nio/javadoc/java/nio/file/PathMatcher.html but without relation to the file system. Ideas?

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  • how to write regular expression using proc in TCL to deal with following pattern ?

    - by Passion
    Hello Guys, I am new to TCL and seeking a help to deal with the following expression. I am getting the i/p string from the user to validate any of these strings below & no others in a line in CLI { GHI GII GJI GKI} and another tricky one is to write regexp to match only the characters which begin with alphabet A & end with B, It also have 1 or more of either YO or OY in between using procedure. Thank you

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  • DHTMLX calendar enable / disable in whole website

    - by user229538
    Hello everyone, I am working on website (built using PHP, Mysql, Jquery) which require that admin set a variable in configuration and according to that configuration variable Jquery autocomplete is enabled or disabled to all website. Is there any way to achieve that functionality. Please help me, its very urgent........

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  • What is the relationship between a R.V N(0,1) and others continuous random variables

    - by calejero
    Hello. I have a question. I need to kwon what is the relationship between a Random Variable with Normal distribuation (N(0,1)) and others continuous random variables. Can you write to me an example? Thank You Hola a todos. Necesito saber qué relación existe entre una variable aleatoria Normal (0,1) y cualquier variable aleatoria continua. Además, me vendría bien un ejemplo. Gracias por vuestra ayuda

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  • iPhone SDK: How to determine keyboard type within a UIKeyboardDidShowNotification?

    - by iPhone Developer
    Hello, I need to know the current keyboard type. I was setting an instance variable in - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField However, testing has shown that this is not always reliable because of the asynchronous nature of notifications. What I am wondering is if anyone can tell me how to determine the current keyboard type within a notification? - (void)keyboardDidShow:(NSNotification *) { // Need way to determine keyboard type here } Thanks.

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  • Tomcat memory issue

    - by user305210
    Hello, I have noticed that my application that is running on Tomcat 5 starts with 1gig of memory and as soon as it starts receiving requests from client, the memory starts dropping until it is down to 100MBs and troubles start from there. I am looking at /manager/status page of tomcat under JVM section where "Free Memory", "Total Memory", "Max Memory" is listed. Is this an indicator of memory leak? Memory does not seem to be freed-up automatically even if there are no requests coming from client machines.

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  • Limiting XML read to 5 records

    - by Jean
    Hello, I have a xml file with 100 records, but I want it to limit it to just 5 records for ($i=0;$i<=5;$i++) { foreach($xml-entry as $result){ if ($result->updated == $result->published) { } } } When I put in the above code, it display one record 5 times. Thanks Jean

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  • Saving MP3 playlist to file

    - by Northernen
    Hello. I am making my own crude MP3 player, and I now have a JList with which I have populated a number of files in the form of MP3 objects (displayed on frame using DefaultListModel). I would now like to have the oppurtunity to save this JList to a file on disk. How would I go about doing this? I'm very new with programming and Java, so help is greatly appreciated.

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  • onclick event in combo box

    - by raam
    function ram(){ document.write("Hello World!") alert("ok"); } India Autralia England Ameriaca Pakistan In this above code the event will not fire for combo box ..i try by using focus and click event....i can i do this....and i want 1 more thing if i select combo box value as India,i want to create a combo box with state(elements are TN,DL..) updation...

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  • Voice Recognition in iPhone app

    - by PRN
    Hello, Is it possible to access voice recognition in an iphone app,similar to voice dialing available in iphone 3gs...when the user says something that related information needs to be fetched... Is there any particular api for the same? I have seen apps on itunes..but how to go about it? Thanks in advance.

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  • I want to do a sql update loop statement, by using the do--while in php

    - by Jean
    Hello, I want to loop the update statement, but it only loops once. Here is the code I am using: do { mysql_select_db($database_ll, $ll); $query_query= "update table set ex='$71[1]' where field='val'"; $query = mysql_query($query_query, $ll) or die(mysql_error()); $row_domain_all = mysql_fetch_assoc($query); } while ($row_query = mysql_fetch_assoc($query)); Thanks Jean

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  • FTP upload via sockets

    - by java2009
    Hello, how can I upload a file with sockets to a ftp server? I am reading something with "STOR" in RFC...It is the same how i transfer a file between two computers?A sample code would be helpfuly...thanks

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  • check compiler version in visual studio 2008

    - by snorlaks
    Hello, Im writing application in c++ and after try to run built (in debug mode) application on another machine I had error (The application has failed to start because its side-by-side configuration is incorect). I realised that there are missed DLLs from windows\WinSxS\ But I dont really know which folder contains what I really need and secondly I dont know how to check my compiler version in visual studio. Thanks for help

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  • What is the most performant 2D graphics engine for use with Android?

    - by nbolton
    I have managed to make a hello world JBox2D application, and it works (I have some bouncing balls). However, I just read a comment on a forum post, which claims that JBox2D produces a lot of garbage, and so causes animation to be poor. Is this true? If yes, then what other 2D engines are available to me? I would very much like to use a physics engine for my 2D game, even if it's just a very simple one.

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