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Articles indexed in March 2010

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  • Iterating Oracle collections of objects with out exploding them

    - by Scott Bailey
    I'm using Oracle object data types to represent a timespan or period. And I've got to do a bunch of operations that involve working with collections of periods. Iterating over collections in SQL is significantly faster than in PL/SQL. CREATE TYPE PERIOD AS OBJECT ( beginning DATE, ending DATE, ... some member functions...); CREATE TYPE PERIOD_TABLE AS TABLE OF PERIOD; -- sample usage SELECT <<period object>>.contains(period2) FROM TABLE(period_table1) t The problem is that the TABLE() function explodes the objects into scalar values, and I really need the objects instead. I could use the scalar values to recreate the objects but this would incur the overhead of re-instantiating the objects. And the period is designed to be subclassed so there would be additional difficulty trying to figure out what to initialize it as. Is there another way to do this that doesn't destroy my objects?

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  • Modify python USB device driver to only use vendor_id and product_id, excluding BCD

    - by Tony
    I'm trying to modify the Android device driver for calibre (an e-book management program) so that it identifies devices by only vendor id and product id, and excludes BCD. The driver is a fairly simply python plugin, and is currently set up to use all three numbers, but apparently, when Android devices use custom Android builds (ie CyanogenMod for the Nexus One), it changes the BCD so calibre stops recognizing it. The current code looks like this, with a simple list of vendor id's, that then have allowed product id's and BCD's with them: VENDOR_ID = { 0x0bb4 : { 0x0c02 : [0x100], 0x0c01 : [0x100]}, 0x22b8 : { 0x41d9 : [0x216]}, 0x18d1 : { 0x4e11 : [0x0100], 0x4e12: [0x0100]}, 0x04e8 : { 0x681d : [0x0222]}, } The line I'm specifically trying to change is: 0x18d1 : { 0x4e11 : [0x0100], 0x4e12: [0x0100]}, Which is, the line for identifying a Nexus One. My N1, running CyanogenMod 5.0.5, has the BCD 0x0226, and rather than just adding it to the list, I'd prefer to eliminate the BCD from the recognition process, so that any device with vendor id 0x18d1 and product id 0x4e11 or 0x4e12 would be recognized. The custom Android rom doesn't change enough for the specifics to matter. The syntax seems to require the BCD in brackets. How can I edit this so that it matches anything in that field?

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  • In a digital photo, detecting if a mountain is obscured by clouds.

    - by Gavin Brock
    The problem I have a collection of digital photos of a mountain in Japan. However the mountain is often obscured by clouds or fog. What techniques can I use to detect that the mountain is visible in the image? I am currently using Perl with the Imager module, but open to alternatives. All the images are taken from the exact same position - these are some samples. My naïve solution I started by taking several horizontal pixel samples of the mountain cone and comparing the brightness values to other samples from the sky. This worked well for differentiating good image 1 and bad image 2. However in the autumn it snowed and the mountain became brighter than the sky, like image 3, and my simple brightness test started to fail. Image 4 is an example of an edge case. I would classify this as a good image since some of the mountain is clearly visible.

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  • Monitor files similar to System Internal's/Microsoft's FileMon/Process Monitor

    - by Tom1952
    I need to generate an event when a file is closed by another app. Unfortunately, ReadDirectoryChangesW doesn't report the close event. It would be possible for me to poll (with a TTimer) any file that reported by ReadDirectoryChangesW as modified, waiting for it to be closed (using CreateFile to detect this). However, what I'd prefer is a completely event driven solution. Is there a way to hook system calls and detect all file closing events? I simply want to know the path & name of any file that has just been closed.

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  • please help!!! this plugin to exclude Pages from the Front Page does not work.

    - by souravran
    add_action('admin_menu', 'pag_admin_menu'); add_filter('wp_list_pages_excludes','exclude_PAG'); function pag_admin_menu() { add_options_page('Exclude', 'Exclude Page', 'administrator', 2, 'Pages'); } function Pages() { if( $_POST[ 'xclu_pag' ] ) { $message = process_PAG(); } $options = PAG_get_options(); ?> <div class="wrap"> <h2>Exclude Categories</h2> <?php //echo $message ?> <p>Use this page to select the pages you want to exclude.</p> <form action="" method="post"> <table width="960px"> <thead> <tr> <th scope="col">Category</th> <th scope="col" align="left">Exclude from Front Page.</th> </tr> </thead> <tbody id="the-list"> <?php //print_r( get_categories() ); $pags = get_pages(); //echo $pags; $temp_pag = 0; foreach( $pags as $pag ) { ?> <tr<?php if ( $temp_pag == 1 ) { echo ' class="alternate"'; $temp_pag = 0; } else { $temp_pag = 1; } ?>> <th scope="row"><?php echo $pag->post_title; ?></th> <td> <input type="checkbox" name="exclude_paggg[]" value="-<?php echo $pag->ID ?>" <?php if ( in_array( '-' . $pag->ID, $options['exclude_paggg'] ) ) { echo 'checked="true" '; } ?>/> </td> </tr> <?php } ?> </table> <p class="submit"><input type="submit" value="Save Changes" /></p> <input type="hidden" name="xclu_pag" value="true" /> </form> </div> <?php } function process_PAG() { if( !$_POST[ 'exclude_paggg' ] ) { $_POST[ 'exclude_paggg' ] = array(); } $options['exclude_paggg'] = $_POST[ 'exclude_paggg' ]; update_option('PAGExcludes', $options); $message_pag = "<div class='updated'><p>Excludes successfully updated</p></div>"; // return $message_pag; } function PAG_get_options() { $defaults = array(); $defaults['exclude_paggg'] = array(); $options = get_option('PAGExcludes'); if (!is_array($options)) { $options = $defaults; update_option('PAGExcludes', $options); } return $options; } function exclude_PAG($query_pag) { $options = PAG_get_options(); if ($query_pag-is_home) { $query_pag-set('pag', implode( ', ', $options[ 'exclude_paggg' ] ) ); } return $query_pag; } Where should I make any change to make it work to exclude pages from the front page..? INPUT WOULD BE GREATLY APPRECIATED....!! enter code here

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  • WatiN, VBScript

    - by little_devil
    I am using WatiN for my web tests. In one of my web pages, I have a VBScript function which opens a dialogbox. I am unable to access it using WatiN. I tried using WatiNTestRecorder; it was unsuccessful. I tried this also: http://blogs.dovetailsoftware.com/blogs/kmiller/archive/2008/07/16/scenario-testing-with-watin.aspx, unsuccessful again.

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  • Want to convert whole PHP script in RUBY ON RAILS

    - by user303058
    // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?

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  • IPhone/Objective-c RSA encryption

    - by Paul
    Hello, I have been google-ing and researching for an answer on how to do a simple RSA encryption using objective-c on an iphone. The main problem i have is that i have been supplied the Exponent and Modulus as an NSData object and i need to then convert them to a SecKeyRef object in order to perform the RSA encryption. Does anyone have any idea how to do that or have any useful hints? Many thanks!

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  • No acceleration for OpenGL and ImportError for modules that exist

    - by Aku
    I'm writing a program using wxPython and OpenGL. The program works, but without any antialiasing, and I get these error messages: (I'm using ArchLinux) INFO:OpenGL.acceleratesupport:No OpenGL_accelerate module loaded: No module named OpenGL_accelerate INFO:OpenGL.formathandler:Unable to load registered array format handler numpy: Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/OpenGL/arrays/formathandler.py", line 44, in loadPlugin plugin_class = entrypoint.load() File "/usr/lib/python2.6/site-packages/OpenGL/plugins.py", line 14, in load return importByName( self.import_path ) File "/usr/lib/python2.6/site-packages/OpenGL/plugins.py", line 28, in importByName module = __import__( ".".join(moduleName), {}, {}, moduleName) File "/usr/lib/python2.6/site-packages/OpenGL/arrays/numpymodule.py", line 11, in <module> raise ImportError( """No numpy module present: %s"""%(err)) ImportError: No numpy module present: No module named numpy INFO:OpenGL.formathandler:Unable to load registered array format handler numeric: Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/OpenGL/arrays/formathandler.py", line 44, in loadPlugin plugin_class = entrypoint.load() File "/usr/lib/python2.6/site-packages/OpenGL/plugins.py", line 14, in load return importByName( self.import_path ) File "/usr/lib/python2.6/site-packages/OpenGL/plugins.py", line 28, in importByName module = __import__( ".".join(moduleName), {}, {}, moduleName) File "/usr/lib/python2.6/site-packages/OpenGL/arrays/numeric.py", line 15, in <module> raise ImportError( """No Numeric module present: %s"""%(err)) ImportError: No Numeric module present: No module named Numeric However, when I look into my site-packages folder, I see those modules present there. I have a wxPython demo program that uses GLCanvas, and it works fine, without any errors. My program is quite similar to the GLCanvas demo, involving just translations, rotations, drawing quads and some basic lighting. What am I doing wrong here? (The code is over 200 lines, if necessary I'll edit this and put it here.)

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  • PHP and SwfUpload

    - by balanza
    Hi, I'm trying to implement SwfUpload in my web page, and I'm using php to save files on server. As is the first time I use this component, I choose to run the algoritm is suggested from the SwfUpload team (http://swfupload.org/forum/generaldiscussion/214): I've put it in a file and I've said the control to use it as code file. It didn't work, as I'm asking help, but what really drives me crazy is that i really don't know how to debug that stuff! The request to the file is encapsulated into the flash object, and i can't get any feedback from it if something goes wrong. Anyone is more experienced than me about this control? Thanks

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  • slow php command line performance - is this normal or do I have an install problem?

    - by Frank Schwieterman
    I have a simple PHP app that prints 'hello world'. When I run it from the command line it takes 6 seconds. Is this normal? It seems to take 1 seconds before "hello world" prints, then 5 seconds after. I assume this is overhead of the interpreter. I am running PHP version 5.2.12 on Windows Server 2008 R2. Could this be an install issue, or is it typical? I did a manual install of PHP then added whatever components were needed to run Drupal. The only PHP addon I remember adding was MDB2, CGI support is there too. I am used to a Lua project I run from the command line, hundreds of lines of code that will run in under a second. I have some unit tests I run from the command line, and already with just a few they are very slow. I run them from Netbeans and the tests are still very slow.

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  • How to improve quality of software

    - by hariharan
    Last week in our organization, we triggered a topic related to different ways of improving the quality of software (both technical as well as functional related topics). Since i am a technical person, i suggested following ideas, Use case based detailed design document – Both technical as well as functional specification should be well organized according to use case requirement. Design patterns – Will help developers to adopt common approach irrespective of technologies. Analyze and implement new technologies – Helps to improve the performance as well as the security of the application. As I am not a well experienced technical candidate , i am unable to provide other solutions. If any suggestions or topics related to this (including testing, functional requirement), please post your valuable comments.

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  • How to translate a config.ini file into C#.NET objects

    - by JACK IN THE CRACK
    config.ini: [globalloads] plugin.SWPlugin = 1 plugin.SWPlugin.params.1 = true plugin.SWPlugin.params.2 = 10 [testz : globballoads] plugin.SWPlugin.params.2 = 20 Simple enough? // load testz config and programmatically create this equivalent code: SWPluginAbstract p = new SWPlugin(true, 20); If a different config.ini setup is needed to do that, it's not a problem...

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  • Javascript Namespace Declaration

    - by objektivs
    What neat ways do you use for declaring JavaScript namespaces. I've come across this one: if (Foo == null || typeof(Foo) != "object") { var Foo = new Object();} Is there a more elegant or succinct way of doing this? Just a bit of fun...

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  • Is assert evil?

    - by dehmann
    The Go language creators write: Go doesn't provide assertions. (...) Programmers use them as a crutch to avoid thinking about proper error handling and reporting. What is your opinion about this?

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  • Is there anyway to set values in the settings.bundle from within the APP

    - by joneswah
    Is there any way to set/update values in the settings.bundle from within your app. I am fine reading in values from the preferences into NSUserDefaults but was wondering whether you can set values from within the app. I have a web-app which I am making a iPhone client for and was thinking to include the users account details in the settings.bundle. This is fine if the user only updates the values through the Apple Application Preferences screens, but what if the user updated those values in the web app. I wanted to pull down the values from the web and then "update" the values in the settings.bundle from within the App. I am guessing that this is not possible and that maybe I need to create my own "in-app" settings screen? But thought I would check with you all first ...

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  • .jar why it works only with specigic jdk version???

    - by sadiq
    Hi friends, I have website source code...in which there is a adito.jar file first i extract it ...then make again jar using "jar -cvf adito.jar . and the changed jar file work fine again with that website. above process is only work when i use jdk1.6.0_14 only... BUT..... if i use jdk1.5 or letest jdk1.6.0_18 the same thing is not work..i mean that jar file will not run in my website... So what is the possible reason of this..as i am new kid in java... thanking you, sadiq.

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  • Check if the path input is URL or Local File

    - by Ahmed
    Hi All, I'm working in xmldataprovider and we have configuration value "source" this value may be local file or url like c:\data\test.xml --absolute data\test.xml --relative or url http:\mysite\test.xml how I can determine all this cases in code I'm working c#

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