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  • "Winamp style" spectrum analyzer

    - by cvb
    I have a program that plots the spectrum analysis (Amp/Freq) of a signal, which is preety much the DFT converted to polar. However, this is not exactly the sort of graph that, say, winamp (right at the top-left corner), or effectively any other audio software plots. I am not really sure what is this sort of graph called (if it has a distinct name at all), so I am not sure what to look for. I am preety positive about the frequency axis being base two exponential, the amplitude axis puzzles me though. Any pointers?

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  • UIWebView autosize issue only on iOS 4.3

    - by troop231
    I am trying to figure out how to fix this bug that only occurs on iOS 4.3. When the application launches, it displays a PDF that is scaled to fit in the UIWebView. It behaves perfectly until you pinch to zoom on the document, and then rotate it, leaving behind a black area. If you don't pinch to zoom, it doesn't leave the black area. I don't understand why this is a iOS 4.3 only issue. Screenshot of the issue: I've been trying to solve this problem awhile now, and would greatly appreciate your help. Thank you. Screenshots of the .xib settings: The code I'm using is: .h: #import <UIKit/UIKit.h> @interface ViewController : UIViewController { UIWebView *webView; } @property (nonatomic) IBOutlet UIWebView *webView; @end .m: #import "ViewController.h" @interface ViewController () @end @implementation ViewController @synthesize webView; - (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { return YES; } else { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } } - (void)viewDidLoad { [super viewDidLoad]; NSString *urlAddress = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"pdf"]; NSURL *url = [NSURL fileURLWithPath:urlAddress]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [webView loadRequest:requestObj]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } @end

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  • C# style properties in python

    - by 3D-Grabber
    I am looking for a way to define properties in Python similar to C#, with nested get/set definitions. This is how far I got: #### definition #### def Prop(fcn): f = fcn() return property(f['get'], f['set']) #### test #### class Example(object): @Prop def myattr(): def get(self): return self._value def set(self, value): self._value = value return locals() # <- how to get rid of this? e = Example() e.myattr = 'somevalue' print e.myattr The problem with this is, that it still needs the definition to 'return locals()'. Is there a way to get rid of it? Maybe with a nested decorator?

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  • Generic applet style system for publishing mathematics demonstrations?

    - by Alex
    Anyone who's tried to study mathematics using online resources will have come across these Java applets that demonstrate a particular mathematical idea. Examples: http://www.math.ucla.edu/~tao/java/Mobius.html http://www.mathcs.org/java/programs/FFT/index.html I love the idea of this interactive approach because I believe it is very helpful in conveying mathematical principles. I'd like to create a system for visually designing and publishing these 'mathlets' such that they can be created by teachers with little programming experience. So in order to create this app, i'll need a GUI and a 'math engine'. I'll probably be working with .NET because thats what I know best and i'd like to start experimenting with F#. Silverlight appeals to me as a presentation framework for this project (im not worried about interoperability right now). So my questions are: does anything like this exist already in full form? are there any GUI frameworks for displaying mathematical objects such as graphs & equations? are there decent open source libraries that exposes a mathematical framework (Math.NET looks good, just wondering if there is anything else out there) is there any existing work on taking mathematical models/demos built with maple/matlab/octave/mathematica etc and publishing them to the web?

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  • Issue with the Entity Manager and phpunit in Symfony 2

    - by rgazelot
    I have an issue with my Entity Manager in phpunit. This is my test : public function testValidChangeEmail() { $client = self::createAuthClient('user','password'); $crawler = $client->request('GET', '/user/edit/30'); $crawler = $client->submit($crawler->selectButton('submit')->form(array( 'form[email]' => '[email protected]', ))); /* * With this em, this work perfectly * $em = $client->getContainer()->get('doctrine.orm.entity_manager'); */ $user = self::$em->getRepository('MyBundle:User')->findUser('[email protected]'); die(var_dump($user->getEmail())); } and this is my WebTestCase which extends original WebTestCase : class WebTestCase extends BaseWebTestCase { static protected $container; static protected $em; static protected function createClient(array $options = array(), array $server = array()) { $client = parent::createClient($options, $server); self::$em = $client->getContainer()->get('doctrine.orm.entity_manager'); self::$container = $client->getContainer(); return $client; } protected function createAuthClient($user, $pass) { return self::createClient(array(), array( 'PHP_AUTH_USER' => $user, 'PHP_AUTH_PW' => $pass, )); } As you can see, I replace the self::$em when I created my client. My issue : In my test, the die() give me the old email and not the new email ([email protected]) which has registered in the test. However in my database, I have the [email protected] correctly saved. When I retrieve my user in the database, I use sefl::$em. If I use the $em in comments, I retrieve the right new email. I don't understand why in my WebTestCase, I can access to the new Entity Manager...

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  • JDBC programms running long time performance issue

    - by phyerbarte
    My program has an issue with Oracle query performance, I believe the SQL have good performance, because it returns quickly in SQLPlus. But when my program has been running for a long time, like 1 week, the SQL query (using JDBC) becomes slower (In my logs, the query time is much longer than when I originally started the program). When I restart my program, the query performance comes back to normal. I think it is could be something wrong with the way I use the preparedStatement, because the SQL I'm using does not use placeholders "?" at all. Just a complex select query. The query process is done by a util class. Here is the pertinent code building the query: public List<String[]> query(String sql, String[] args) { Connection conn = null; conn = openConnection(); conn.setAutocommit(true); .... PreparedStatement preStatm = null; ResultSet rs = null; ....//set preparedstatment arg code rs = preStatm.executeQuery(); .... finally{ //close rs //close prestatm //close connection } } In my case, the args is always null, so it just passes a query sql to this query method. Is that possible this way could slow down the DB query after program long time running? Or I should use statement instead, or just pass args with "?" in the SQL? How can I find out the root cause for my issue? Thanks.

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  • Tools for displaying text, powerpoint style, in linux

    - by Will Mc
    I have a problem where I need a way to display a repeating series of "images" on a computer monitor. Specifically, given a series of text files, I'd like a way to display the contents of said files on a screen in a way much like a powerpoint would. My current thoughts are to find some tool that will take in a text file of some format, and then output an image which contains the text from the file. Then I'd put it in a directory and have some Slideshow program continuously go between the images in that directory. It's a very hacky solution, obviously. So, does anyone know of tools that would do such a thing? Or is there a better way to do this? I've looked into the library libgd2, but it doesn't seem to support text-wrapping for images, which is something I'd need. Thanks!

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  • T-SQL stored procedure to return google style "suggested" search results

    - by stephen776
    Ok, using SQL Server 2008. On my web page I have a textbox with jQuery-UI AutoComplete hooked up. Now I need a stored procedure to search across all columns of a single table(or multiple joined tables I suppose) for a search string coming from the textbox/autocomplete AJAX call, and return "suggested" search strings. I am using the AdventureWorks db for testing(Products table) So for example, the product table has columns for product name and product number(among others) and I want to return suggested search strings based on user input where they may enter a product name and/or a product number. I have it working across a single column which was simple. Any ideas?

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  • Javascript code refactoring and assessment

    - by neitony
    I'm using javascript to toggle the display state of some objects based on the time of day. A sample of the code is given below. I was wondering if anyone could give a suggestion as to how I can refactor this code while at the same time improving the logic. switch(tcode) { case 'eur' : eur.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; asia.style.display = 'none'; us_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'us' : us.style.display = 'block'; eur.style.display = 'none'; asia.style.display = 'none'; eur_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'asia' : asia.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; eur.style.display = 'none'; eur_inactive.style.display = 'block'; us_inactive.style.display = 'block';

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  • Why TR not taking style?

    - by metal-gear-solid
    CSS table tr {border-bottom:1px solid #008999} HTML <table width="100%" cellspacing="0" cellpadding="0"> <thead> <tr> <th scope="col">one</th> <th scope="col">two</th> <th scope="col">three</th> </tr> </thead> <tbody> <tr> <th scope="row">Hello</th> <td>&nbsp;</td> <td>&nbsp;</td> </tr> </tbody> </table>

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  • Declaring an integer Range with step != 1 in Ruby

    - by Dan Tao
    Hey guys, I'm completely new to Ruby, so be gentle. Say I want to iterate over the range of even numbers from 2 to 100; how would I do that? Obviously I could do: (2..100).each do |x| if x % 2 == 0 # my code end end But, obviously (again), that would be pretty stupid. I know I could do something like: i = 2 while i <= 100 # my code i += 2 end I believe I could also write my own custom class that provides its own each method (?). I am almost sure that would be overkill, though. I'm interested in two things: Is it possible to do this with some variation of the standard Range syntax (i.e., (x..y).each)? Either way, what would be the most idiomatic "Ruby way" of accomplishing this (using a Range or otherwise)? Like I said, I'm new to the language; so any guidance you can offer on how to do things in a more typical Ruby style would be much appreciated.

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  • CSS Print Style Sheets - Examples

    - by bsreekanth
    Trying to learn about how to effectively use print.css, so that graphical and navigational elements are not shown in print preview/print. Read some articles, and part of print css of html5 boilerplate. Two sites, which was quite impressive the way they change the look during print are http://css-tricks.com/ http://bottlerocketcreative.com/ But I cannot see the css related to print. Can you please point to the css they use to learn how to do similar transformation. thanks.

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  • Salesforce/PHP - outbound messages (SOAP) - memory limit issue? DOMDocument::loadXML() issue?

    - by Phill Pafford
    I'm using Salesforce to send outbound messages (via SOAP) to another server. The server can process about 8 messages at a time, but will not send back the ACK file if the SOAP request contains more than 8 messages. SF can send up to 100 outbound messages in 1 SOAP request and I think this is causing a memory issue with PHP. If I process the outbound messages 1 by 1 they all go through fine, I can even do 8 at a time with no issues. But larger sets are not working. ERROR in SF: org.xml.sax.SAXParseException: Premature end of file Looking in the HTTP error logs I see that the incoming SOAP message looks to be getting cut of which throws a PHP warning stating: DOMDocument::loadXML() ... Premature end of data in tag ... PHP Fatal error: Call to a member function getAttribute() on a non-object This leads me to believe that PHP is having a memory issue and can not parse the incoming message due to it's size. I was thinking I could just set: ini_set('memory_limit', '64M'); // This has done nothing to fix the problem But would this be the correct approach? Is there a way I could set this to increase with the incoming SOAP request dynamically? UPDATE: Adding some code $data = fopen('php://input','rb'); $headers = getallheaders(); $content_length = $headers['Content-Length']; $buffer_length = 1000; $fread_length = $content_length + $buffer_length; $content = fread($data,$fread_length); /** * Parse values from soap string into DOM XML */ $dom = new DOMDocument(); $dom->loadXML($content); ....

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  • Refactoring and assessment

    - by neitony
    I'm using javascript to toggle the display state of some objects based on the time of day. A sample of the code is given below. I was wondering if anyone could give a suggestion as to how I can refactor this code while at the same time improving the logic. switch(tcode) { case 'eur' : eur.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; asia.style.display = 'none'; us_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'us' : us.style.display = 'block'; eur.style.display = 'none'; asia.style.display = 'none'; eur_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'asia' : asia.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; eur.style.display = 'none'; eur_inactive.style.display = 'block'; us_inactive.style.display = 'block';

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  • In Eclipse, how do I change the default modifiers in the class/type template?

    - by gustafc
    Eclipse's default template for new types (Window Preferences Code Style Code Templates New Java Files) looks like this: ${filecomment} ${package_declaration} ${typecomment} ${type_declaration} Creating a new class, it'll look something like this: package pkg; import blah.blah; public class FileName { // Class is accessible to everyone, and can be inherited } Now, I'm fervent in my belief that access should be as restricted as possible, and inheritance should be forbidden unless explicitly permitted, so I'd like to change the ${type_declaration} to declare all classes as final rather than public: package pkg; import blah.blah; final class FileName { // Class is only accessible in package, and can't be inherited } That seems easier said than done. The only thing I've found googling is a 2004 question on Eclipse's mailing list which was unanswered. So, the question in short: How can I change the default class/type modifiers in Eclipse? I'm using Eclipse Galileo (3.5) if that matters.

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  • change application windows style

    - by Suriyan Suresh
    I start IE as a process and then i would like to change the following properties of a application. remove title bar, toolbar of a application(if IE) set top,left location and size through c# prevent process from minimizing , i have used the following code but had no luck(find the handle of the process and then pass it to below function) public void SetFormOnDesktop(int hwnd) { int hwndf = hwnd; IntPtr hwndParent = FindWindow("ProgMan", null); SetParent(hwndf, hwndParent); } EDIT 1: Is it possible to prevent IE context menu and prevent it from showing on taskbar

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  • Interface with inner implementation - good or bad

    - by dermoritz
    I am working on a project with many someInterface - someInterfaceImpl-pairs. Some days ago I got the idea (probably inspired by reading some objective c code) to include the default implementations as an inner class. Now some colleagues (all with much more java experience than me) saw this idea - feedback was between shocked and surprised ("this is working?"). I googled around a bit but didn't find much evidence of usefulness of this "pattern" (personal i like it): pdf-paper and a faq about code style What do you think - especially in those cases where an "default" implementation is tightly coupled to an interface. Update i just found this: Java Interface-Implementation Pair (see accepted answer)

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  • CSS issue with multi-accordion

    - by Josh
    Alright, I got some help earlier with this, but it never truly got resolved. I'm pretty sure I'm having a CSS issue, but I just can't figure out how to correct it. Currently, I have these accordions working perfectly, they collapse, expand, expand again when told to etc. The problem I'm having is aligning the content within these accordion divs. Ideally, when everything is default (collapsed) all I want seen is the thumbnail image and the Headline. Then if the user wishes, they click on the headline and it expands and if they want to make a comment or view comments, they can click once again to expand that. Here's the thing, I have to make the height 62px so everything will fit in and just not float all over the place. This creates a problem with the "View Comments" to "Text Here" area, as you can tell it has outrageous space between the two. The other issue is, as I currently have it I'm forcefully indenting the article text so that it doesn't TEXT WRAP underneath the thumbnail image. Basically, I want it split into 2 columns so nothing ever goes beneath the image, but working with this accordion and divs inside the divs it's proving to be difficult for me. I've put up a demo here: http://www.notedls.com/demo

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  • Pre-done SQLs to be converted to Rails' style moduls

    - by Hoornet
    I am a Rails newbie and would really appreciate if someone converted these SQLs to complete modules for rails. I know its a lot to ask but I can't just use find_by_sql for all of them. Or can I? These are the SQLs (they run on MS-SQL): 1) SELECT STANJA_NA_DAN_POSTAVKA.STA_ID, STP_DATE, STP_TIME, STA_OPIS, STA_SIFRA, STA_POND FROM STANJA_NA_DAN_POSTAVKA INNER JOIN STANJA_NA_DAN ON(STANJA_NA_DAN.STA_ID=STANJA_NA_DAN_POSTAVKA.STA_ID) WHERE ((OSE_ID=10)AND (STANJA_NA_DAN_POSTAVKA.STP_DATE={d '2010-03-30'}) AND (STANJA_NA_DAN_POSTAVKA.STP_DATE<={d '2010-03-30'})) 2) SELECT ZIGI_OBDELANI.OSE_ID, ZIGI_OBDELANI.DOG_ID AS DOG_ID, ZIGI_OBDELANI.ZIO_DATUM AS DATUM, ZIGI_PRICETEK.ZIG_TIME_D AS ZIG_PRICETEK, ZIGI_KONEC.ZIG_TIME_D AS ZIG_KONEC FROM (ZIGI_OBDELANI INNER JOIN ZIGI ZIGI_PRICETEK ON ZIGI_OBDELANI.ZIG_ID_PRICETEK = ZIGI_PRICETEK.ZIG_ID) INNER JOIN ZIGI ZIGI_KONEC ON ZIGI_OBDELANI.ZIG_ID_KONEC = ZIGI_KONEC.ZIG_ID WHERE (ZIGI_OBDELANI.OSE_ID = 10) AND (ZIGI_OBDELANI.ZIO_DATUM = {d '2010-03-30'}) AND (ZIGI_OBDELANI.ZIO_DATUM <= {d '2010-03-30'}) AND (ZIGI_PRICETEK.ZIG_VELJAVEN < 0) AND (ZIGI_KONEC.ZIG_VELJAVEN < 0) ORDER BY ZIGI_OBDELANI.OSE_ID, ZIGI_PRICETEK.ZIG_TIME ASC 3) SELECT STA_ID, SUM(STP_TIME) AS SUM_STP_TIME, COUNT(STA_ID) FROM STANJA_NA_DAN_POSTAVKA WHERE ((STP_DATE={d '2010-03-30'}) AND (STP_DATE<={d '2010-03-30'}) AND (STA_ID=3) AND (OSE_ID=10)) GROUP BY STA_ID 4) SELECT DATUM, TDN_ID, TDN_OPIS, URN_OPIS, MOZNI_PROBLEMI, PRIHOD, ODHOD, OBVEZNOST, ZAKLJUCEVANJE_DATUM FROM OBRACUNAJ_DAN WHERE ((OSE_ID=10) AND (DATUM={d '2010-02-28'}) AND (DATUM<={d '2010-03-30'})) ORDER BY DATUM These SQLs are daily working hours and I got them as is. Also I got Database with it which (as you can see from the SQL-s) is not in Rails conventions. As a P.S.: 1)Things like STP_DATE={d '2010-03-30'}) are of course dates (in Slovenian date notation) and will be replaced with a variable (date), so that the user could choose date from and date to. 2) All of this data will be shown in the same page in the table,so maybe all in one module? Or many?; if this helps, maybe. So can someone help me? Its for my work and its my 1st project and I am a Rails newbie and the bosses are getting inpatient(they are getting quite loud actually) Thank you very very much!

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  • Issue with changing an attribute with jquery

    - by rshivers
    Hello, I'm having an issue with changing the attribute for an id and can't seem to figure out what I'm doing wrong. I guess it doesn't help that I'm new to this also. I have a function that tests to make sure that I am pulling the correct id from the row in my form that I have dynamically created. It goes something like this: myFunction() { var id = $(id).attr("id"); alert("This is my id " + id); } This works with no problem and when I click the button assigned to alert me of my id it will give give me the id of the dynamic row in my form. The issue is now when I try to change the id with this: changeId() { var newId = $(id).attr("id", "x"); alert("This is my new id " + newId); } What happens in this case is that it will alert saying "This is my new id [object Object]" instead of giving me the new id. Any suggestions? I'd really appreciate any help with this.

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  • NoMethodError using Memcached Sinatra-style

    - by sevennineteen
    I've just installed Memcached on my Mac and updated my Sinatra app configuration as described in Heroku's documentation, but I'm getting a NoMethodError when trying to use the hash-based syntax they specify: >> CACHE['color'] = 'blue' >> CACHE['color'] Using explicit get and set methods as below seems to work fine. >> CACHE.set('color', 'blue') >> CACHE.get('color') If necessary I can use the latter syntax, but the former seems more elegant. I haven't tested this on Heroku's environment since I'd like whatever implementation I use to work on my local environment as well. Thanks!

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  • iTunes Connect uploading issue

    - by CindySeattle
    Too bad that iTunes Connect changed its behavior recently. I'm providing an update to an existing app. I submitted new binary using the Loader without problem on the first try. Then I discovered that different from before, one has to reject the binaries in order to change screenshots. Too bad that the update is in the status of "In Review". Well, I have to rejected my binaries and begin to upload new screenshots, because I don't want to display screenshots of previous version. The new screen shots are uploaded but I'm stuck in "Developer rejected" status. Meaning I cannot upload the binaries and not able to change screenshots from that time on. The following error will appear when click Save Changes in either situations. "There was an error saving changes. Please try again later or contact iTunes Connect Support at [email protected]." I checked the source of the error page and think it's this error id="lcBoxWrapperHeaderTextUpdaterContainer" action="/WebObjects/iTunesConnect.woa/wo/7.0.0.9.7.7.1.1.1.1" errorId="ajaxContainerError" I have reported iTune Connect via the "Contact us" link on this issue but not get any response back for 2 days already. Very disappointing. Did anybody experience similar issue? How did you resolve this?

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  • How to Change Style of Parent <li> on Hover

    - by Stuart Haiz
    I have a WordPress site (on my localhost) that uses a <ul> for a custom menu. How can I change the CSS of a <li> on hover only if it has a <ul> sub-menu? All the main menu items have a border-radius and I want to remove this on the current item (Services, below) for example: <div class="main-nav"> <ul class="menu" id="menu-main-nav"> <li><a href="#">Home</a></li> <li><a href="#">Services</a> <ul class="sub-menu"> <li><a href="#">Item One</a></li> <li><a href="#>Item Two</a></li> </ul> </li> <li><a href="#>Contact</a></li> </ul> </div> I can't find a CSS solution and I've tried jQuery too: $('ul.sub-menu').parent().hover(function(){ $(this).addClass('no-radius'); });

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