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• USB Serial cable with CDC support

  - by Harsha

  Hi All, I bought a USB to Serial cable which claims to be CDC compliant. But the bInterfaceClass value in interface descriptor is 0xFF(which is vendor specific). I was expecting it to be 0x02 (Communications and CDC control). In the device manager, i found that the drivers being loaded are ser2pl.sys and serenum.sys. I had learnt usbser.sys is the windows CDC driver, but it was not loaded for my cable. I am pretty much new to this CDC, so i have following questions 1.Does this indicate that the cable is not CDC compliant 2.Can i make this cable CDC compliant (since CDC is a driver functionality), by loading usbser.sys. If yes how?

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• Providing or Filtering assemblies when registering areas for an ASP.NET MVC 2.0 application

  - by HackedByChinese

  I have a large application that currently exists as a hybrid of WebForms and MVC 2.0. Startup of my application is dreadful, and the culprit is primarily because of the AreaRegistration.RegisterAllAreas call. More specifically, that it is using the System.Web. Compilation.BuildManager.GetReferencedAssemblies to enumerate all types in assemblies directly referenced by the application and test them to see if they derive from AreaRegistration. Unfortunately, I have a number of third-party assemblies that happen to be quite extensive, so this initial load can be pretty bad. I'd have much better results if I could tell it which assemblies to look for AreaRegistrations, or even register areas manually for the time being. I can gather up all the internals of AreaRegistration to create and invoke the registration, but I'm just curious if others have had and worked around this issue.

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• Is it a Good Practice to Write HTML Using a StringBuilder in my ASP.NET Codebehind?

  - by d3020

  I'm interested to hear from other developers their opinion on an approach that I typically take. I have a web application, asp.net 2.0, c#. What I usually do to write out drop downs, tables, input controls, etc. is in the code behind use StringBuilder and write out something like sb.Append(" I don't find myself using to many .net controls as I typically write out the html in the code behind. When I want to use jQuery or call JavaScript I just put that function call in my sb.Append tag like sb.Append("td...onblur='fnCallJS()'. I've gotten pretty comfortable with this approach. For data access I use EntitySpaces. I'm just kind of curious if this sort of approach is horribly wrong, ok depending on the context, good, time to learn 3.0, etc. I'm interested in learning and was just looking for some input.

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• jQuery Hover Problem - Hover Triggers on Mouse Move

  - by majman

  For reference: http://www.favsav.com/-public You'll notice that if you hover over a list item, the meta data slides up. If you leave your mouse still on top, and then move a smidgen to the left or right, it triggers again. There's some other silliness going on if you move around The code is pretty simple: $('li.post').hover(function(){ $(this).find('.meta').slideDown('fast'); }, function(){ $(this).find('.meta').slideUp('fast'); }) Any idea why things are behaving like this? This seems to only be happening in Firefox (i'm using 3.5.5 on OSX) UPDATE After restarting Firefox, all is well! Thanks for the input!

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• How does COM registration work in Windows

  - by Air Benji

  I'm an application packager trying to make sense of how the COM registry keys (SelfReg) interrelate to the given .dll in Windows. ProgID's, AppID's, TypeLibs, Extensions & Verbs are all tied around the CLSID right? Do CLSID's always use Prog/App IDs or could you just have a file extension class? Which bits are optional? Some of it seems to be 'like a router' where there's the two interfaces (internal - .dll) and external (the extension etc). How does this all fit? (The SDK documentation doesn't make sense to me) I ask as this is all pivotal to application 'healing' with Windows Installer (which packagers are all 'big' on, but there's no nitty-gritty breakdowns since its a coder-thing really) ---Edit: Am I safe in assuming that for what COM is registered, it must all link back to the CLSID and cannot be a 'dead-end'? Verbs need extensions which need progid's... What about the AppId's, TypeLibs and Interfaces? How do they interrelate?

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• How create widget with clickable text in QT/PyQt?

  - by serge

  Hi everyone, i'm trying to realize non-editable QTableView with widgets in cells that should contain clickable listed text. With following code i'm setting widget in definite cell: view = QTableView() label = QLabel( <some html text> ) ... view.setIndexWidget(index, label) I used html to make label's text clickable, but links became blue with underline and moreover by clicking on it with right mouse button appears popup menu with "Copy Link Locaion" option, where i wanted to place some hidden information instead of url and of course do not let user see this info. I'm looking for light-weight widget, i thought that insertion of QGraphicsView in each cell will lead to big computer loads, but can't think of any other solution. Can you advice what should i use for this purpose? Thank you in advance Serge

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• Scrollbar within a scrollbar only make the inner scrollbar jump to id

  - by Nik

  I have a page that requires a scrollbar - http://www.aus-media.com/dev/site_BYJ/schedule-pricing/pricing.html You will notice (unless you are running at a high resolution with a big screen) that there is an outer scrollbar for the main page as well as an inner scrollbar for the content. When you click on one of the sub items e.g. payments you will notice that the outer page scrolls down as well as the inner scrollbar. Does anybody know of a way to only scroll the inner scrollbar, so only it jumps to the id? Thanks guys Nik

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• Urllib's urlopen breaking on some sites (e.g. StackApps api): returns garbage results

  - by Edan Maor

  I'm using urllib2's urlopen function to try and get a JSON result from the StackOverflow api. The code I'm using: >>> import urllib2 >>> conn = urllib2.urlopen("http://api.stackoverflow.com/0.8/users/") >>> conn.readline() The result I'm getting: '\x1f\x8b\x08\x00\x00\x00\x00\x00\x04\x00\xed\xbd\x07`\x1cI\x96%&/m\xca{\x7fJ\... I'm fairly new to urllib, but this doesn't seem like the result I should be getting. I've tried it in other places and I get what I expect (the same as visiting the address with a browser gives me: a JSON object). Using urlopen on other sites (e.g. "http://google.com") works fine, and gives me actual html. I've also tried using urllib and it gives the same result. I'm pretty stuck, not even knowing where to look to solve this problem. Any ideas?

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• Urllib's urlopen broken on some sites (StackApps api)

  - by Edan Maor

  I'm using urllib2's urlopen function to try and get a JSON result from the StackOverflow api. The code I'm using: >>> import urllib2 >>> conn = urllib2.urlopen("http://api.stackoverflow.com/0.8/users/") >>> conn.readline() The result I'm getting: '\x1f\x8b\x08\x00\x00\x00\x00\x00\x04\x00\xed\xbd\x07`\x1cI\x96%&/m\xca{\x7fJ\... I'm fairly new to urllib, but this doesn't seem like the result I should be getting. I've tried it in other places and I get what I expect (the same as visiting the address with a browser gives me: a JSON object). Using urlopen on other sites (e.g. "http://google.com") works fine, and gives me actual html. I've also tried using urllib and it gives the same result. I'm pretty stuck, not even knowing where to look to solve this problem. Any ideas?

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• Singleton again, but with multi-thread and Objective-C

  - by Tonny Xu

  I know Singleton pattern has been discussed so much. But because I'm not fully understand the memory management mechanism in Objective-C, so when I combined Singleton implementation with multithreading, I got a big error and cost me a whole day to resolve it. I had a singleton object, let's call it ObjectX. I declared an object inside ObjectX that will detach a new thread, let's call that object objectWillSpawnNewThread, when I called [[ObjectX sharedInstance].objectWillSpawnNewThread startNewThread]; The new thread could not be executed correctly, and finally I found out that I should not declare the object objectWillSpawnNewThread inside the singleton class. Here are my questions: How does Objective-C allocate static object in the memory? Where does Objective-C allocate them(Main thread stack or somewhere else)? Why would it be failed if we spawn a new thread inside the singleton object? I had searched the Objective-C language [ObjC.pdf] and Objective-C memory management document, maybe I missed something, but I currently I could not find any helpful information.

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• Collection of MVC CSS files available?

  - by Jaxidian

  Just curious - are there various customized Site.css files (and accompanying images) that work with the default ASP.NET MVC 2 templates? I'm a stereotypical developer who "doesn't do pretty" so I'd like to find a design that is good enough for me to use until I later have a designer come back and fix my design. Are there collections/libraries of various designs out there that work with the default templates? I did find this but the 2 popular ones I tried seem like they're for MVC 1, plus they in no way used the default tags with the MVC 2 templates.

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• database datatype size

  - by yeeen

  Just to clarify by specifying sth like VARCHAR(45) means it can take up to max 45 characters? I rmb I heard from someone a few years ago that the number in the parathesis doesn't refer to the no of characters, then the person tried to explain to me sth quite complicated which i don't understand n forgot alr. And what is the difference btn CHAR and VARCHAR? I did search ard a bit and see that CHAR gives u the max of the size of the column and it is better to use it if ur data has a fix size and use VARCHAR if ur data size varies. But if it gives u the max of the size of the column of all the data of this col, isn't it better to use it when ur data size varies? Esp if u don't know how big is ur data size gg to be. VARCHAR needs to specify the size (CHAR don't really need right?), isn't it more troublesome?

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• Can't change data type on MS Access 2007

  - by khalidfazeli

  Hi All, I have a huge database (800MB) which consists of a field called 'Date Last Modified' at the moment this field is entered as a text data type but need to change it to a Date/Time field to carry out some queries. I have another exact same database but with only 35MB of data inside it and when I change the data type it works fine, but when I try to change data type on big database it gives me an error: Micorosoft Office Access can't change the data type. There isn't enough disk space or memory After doing some research some sites mentioned of changing the registry file (MaxLocksPerFile) tried that as well, but no luck :-( Can anyone help please?

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• Packing a long binary integer in Ruby

  - by user1056142

  I'm trying to send a very long binary integer over UDP (on the order of 200 bits). When I try to use Array's pack method, it complains the string I'm trying to convert is too large. Am I going about this the wrong way? ruby-1.8.7-p352 :003 > [0b1101001010101101111010100101010011010101010110010101010101010010010101001010101010101011101010101010101111010101010101010101].pack('i') RangeError: bignum too big to convert into `unsigned long' from (irb):3:in `pack' from (irb):3 This number is supposed to represent a DNS query packet (this is for a homework assignment; we're not allowed to use any DNS libraries).

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• Android app (with felix) crashes with LinearAlloc exceeded capacity

  - by user1106000

  I am running apache felix and an osgi app on android (3.2). This works pretty well so far, but I have rather large chunks of data to load into the application (osgi bundles). The problem with that is that when I load the biggest chunk of data I get LinearAlloc exceeded capacity The error seems to come from LinearAlloc.c \#define DEFAULT_MAX_LENGTH (4*1024*1024) if (nextOffset > pHdr->mapLength) { /* * We don't have to abort here. We could fall back on the system * malloc(), and have our "free" call figure out what to do. Only * works if the users of these functions actually free everything * they allocate. */ LOGE("LinearAlloc exceeded capacity, last=%d\n", (int) size); dvmAbort(); } afaik in 3.2/4.x it is even 8*1024*1024, but I still hit that limit. I'm looking to get better insight on what causes this problem and how I might possibly be able to fix it. Any help would be appreciated.

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• Knowledge base web app -- need a demo mode

  - by Smandoli

  I was contracted to build an on-line knowledge base that searches and cross-references many thousands of replacement parts for a niche industry. My client furnishes this app to his customers on a subscription basis. It uses MySQL and PHP and it works great. I want to deploy it in "demo mode" to sell my skills. I want the user to see the functions, but I have to guard the data for my client. My first idea was to obfuscate the results. That's at cross-purposes with showing how well it searches. I'm considering a limit on how many searches you can perform, but that's awkward too as someone could visit every day and get more answers than we would prefer. Other posts I've found are about letting people interact with an app, but without the challenge of protecting a big knowledge base. Can you suggest an approach? (Note, I put the tag obfuscation, but not sure it applies because java code obfuscation seems to be unrelated.)

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• Regex pattern problem in python

  - by mridang

  I need to extract parts of a string using regex in Python. I'm good with basic regex but I'm terrible at lookarounds. I've shown two sample records below. The last big is always a currency field e.g. in the first one it is 4,76. In the second one it is 2,00. The second has an account number that is the pattern of \d{6}-\d{6}. Anything after that is the currency. 24.02 24.02VALINTATALO MEGAHERTSI4,76- 24.02 24.02DOE MRIDANG 157235-1234582,00- Could you help me out with this regex? What I've written so far is given below but it considers everything after the 'dash' in the account number to be the currency. .*?(\d\d\.\d\d)(.*?)\s*(?<!\d{6}-\d{6})(\d*,\d\d) Thanks in advance

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• Memory leak returning QIcon

  - by Stefano

  I started using Qt but I'm facing a big problem: I implemented my custom model that inhrerits from the QAbstractListModel class. What I want to do is to display a list with icon. All works and the image is shown with my code but it creates a memory leak. If I don't return the icon no memory leak is detected. class MyModel : public QAbstractListModel { public: ... private: QIcon myicon; } QVariant MyModel::data(const QModelIndex &index, int role) const { ... if (role == Qt::DecorationRole) { return this->myicon; } ... }

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• Just-in-time invocation of Facebook login window from UIWebView

  - by Chris Garrett

  I have an app that presents a UIWebView pointing to my own server. I have a Facebook Like button on some pages inside the UIWebView. I have it working now, but the login screen is way too big for the phone screen. I would like to present a nicer login dialog such as the one in the Facebook iPhone API, and then continue back to the web view. The Facebook iPhone SDK has support for a login button and iPhone-friendly login screen, but it assumes that a user will click a login button before doing anything Facebook related. I would like the Like button to just appear, and to bring up the iPhone login screen only when necessary. I have monitored HTTP requests from my web view, and it looks like I could intercept the login request there, and present the login dialog. However, it seems that this would be fragile, because if Facebook changes those calls then my app will no longer work. Is there a more elegant way to do this?

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• External XMPP component - Anyone know a Tutorial or Open Source Example please?

  - by gav

  Hi All, I want to run an XMPP server (Openfire) and register an external component to handle the messages it will recieve (using the Whack library). The external component will run my game logic and I will be using XMPP to send player moves to the server and status updates in the other direction. The bonus with XMPP is that we get built in chat for free. The trouble is, although Ignite look fairly established, I can't find a tutorial on how to write, register and debug an External XMPP component written with Whack, there are very few in general for that matter. I am not invested in either the server implementation or the External Component library, java is just my language of choice. If I was to move to Erlang or Scala or something it would have to be a very simple in that language. A single tutorial or example would go a long way here, I just need an basic External XMPP component pretty please! Kind regards, Gavin

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• Exclude filter from certain url's

  - by Mads Mobæk

  I'm using a filter in web.xml to check if a user is logged in or not: <filter> <filter-name>LoginFilter</filter-name> <filter-class>com.mycompany.LoginFilter</filter-class> </filter> <filter-mapping> <filter-name>LoginFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> And this works like a charm until I have a stylesheet or image I want to exclude from this filter. I know one approach is to put everything that's protected inside /privateor similar, and then set the url-pattern to: <url-pattern>/private/*</url-pattern>. The downside to this is my URLs now looking like: http://www.mycompany.com/private/mypage instead of http://www.mycompany.com/mypage. Is there another solution to this problem, that let me keep my pretty-urls?

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• How load text into JavaStackTraceConsolePage programmatically?

  - by Marcel

  In my Eclipse plugin I'd like to send a Java console output (loaded from some other system) to the Java Stack Trace Console. I pseudo-code it'd be something like: get the console output from the other system obtain a reference to a JavaStackTraceConsolePage instance send the text to the console page display the console i.e. switch from my plugin's view to the Console view Step 1 is easy as it is specific to my plugin. As for the rest I'm pretty much clueless - Google and stackoverflow.com don't come up with useful references or how-tos. Since the class JavaStackTraceConsolePage is part of an internal Eclipse API (org.eclipse.jdt.internal.debug.ui.console) I'm not even sure whether it's doable at all.

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• Oracle SELECT TOP 10 records

  - by ArneRie

  Hi, i have an big problem with an SQL Statement in Oracle. I want to select The TOP 10 Records ordered by STORAGE_DB wich arent in a list from an other select statement. This one works fine for all records: SELECT DISTINCT APP_ID, NAME, STORAGE_GB, HISTORY_CREATED, TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') AS HISTORY_DATE FROM HISTORY WHERE STORAGE_GB IS NOT NULL AND APP_ID NOT IN (SELECT APP_ID FROM HISTORY WHERE TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') = '06.02.2009') But when i am adding AND ROWNUM <= 10 ORDER BY STORAGE_GB DESC im getting some kind of "random" Records. I think because the limit takes in place before the order. Does someone has an good solution? The other problem: This query is realy slow (10k+ records)

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• Test (with RSpec) a controller outside of a Rails environment

  - by ramon.tayag

  I'm creating a gem that will generate a controller for the Rails app that will use it. It's been a trial and error process for me when trying to test a controller. When testing models, it's been pretty easy, but when testing controllers, ActionController::TestUnit is not included (as described here). I've tried requiring it, and all similar sounding stuff in Rails but it hasn't worked. What would I need to require in the spec_helper to get the test to work? Thanks!

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• How to manage test fixtures for end-to-end testing?

  - by Peter Becker

  Having just set up a test framework for a new web application, I realized I missed one of the big questions: "How do I make tests independent from each other?" Years ago I have set up some complicated Ant scripting to do full cycles of deleting all database tables, creating the schema again, adding test data, starting the application, running one test and then stopping the application. That was a pain to maintain and restricted us to nightly tests due to the time it took to run the full suite. It was still worth it, but I wonder if there is an easier way. Are there alternatives to this approach? The main criterion is that each test should not be affected by any other test in the suite, no matter if it failed or succeeded.

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