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Articles indexed Saturday May 29 2010

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  • bit manipulation in java

    - by sarav
    I have a fragment of bytes in a byte[]. The total size of the array is 4 and I want to convert this into a positive long number. For example if the byte array is having four bytes 101, 110, 10, 1 then i want to get the long number represented by binary sequence 00000000 00000000 00000000 00000000 00000101 00000110 00000010 00000001 which equals 84279809 What is the efficient way to do that in Java?

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  • trouble with boost::filesystem::wrecursive_directory_iterator

    - by Dogmatixed
    I'm trying to write a program to help me manage my iTunes library, including removing duplicates and cataloging certain things. At this point I'm still just trying to get it to walk through all the folders, and have run into a problem: I have a small amount of Japanese music, where the artist and/or album is written in Japanese characters. Because of how iTunes arranges things in its library the directories contain these characters. "shouldn't be a problem, though." I thought, because the boost::filesystem library has a wide character version of its recursive iterator. but when I actually try to use it, it seems to completely stop when it hits the first Japanese char. complete stop as in it doesn't finish printing the line, no carriage return or anything. now, I'm still pretty new to programming, so I'm assuming it's my mistake, anyone know why this is happening? here's what I think is the relevant code: fs::wrecursive_directory_iterator end_it; int i; try { for(fs::wrecursive_directory_iterator rec_it(full_path); rec_it != end_it; ++rec_it) { for(i = 0; i < rec_it.level(); i++) { out << "\t"; } out << rec_it->string() << std::endl; } } catch(std::exception e) { out << "something went wrong: " << e.what(); } and from my output file, minus some of the path: /Test Libs/Combine /Test Libs/Lib1 /Test Libs/Lib1/02 Too Long.m4a /Test Libs/Lib1/03 Like a Hitman, Like a Dancer.mp3 /Test Libs/Lib1/A Certain Ratio /Test Libs/Lib1/A Certain Ratio/Beyond Punk! /Test Libs/Lib1/A Certain Ratio/Unknown Album /Test Libs/Lib1/A Certain Ratio/Unknown Album/Do The Du.mp3 /Test Libs/Lib1/A Certain Ratio/Unknown Album/Shack Up.mp3 /Test Libs/Lib1/ finally, what I expect: /Test Libs/Combine /Test Libs/Lib1 /Test Libs/Lib1/02 Too Long.m4a /Test Libs/Lib1/03 Like a Hitman, Like a Dancer.mp3 /Test Libs/Lib1/A Certain Ratio /Test Libs/Lib1/A Certain Ratio/Beyond Punk! /Test Libs/Lib1/A Certain Ratio/Unknown Album /Test Libs/Lib1/A Certain Ratio/Unknown Album/Do The Du.mp3 /Test Libs/Lib1/A Certain Ratio/Unknown Album/Shack Up.mp3 /Test Libs/Lib1/??? /Test Libs/Lib1/Bring it on /Test Libs/Lib1/04 Bring it on.mp3 any thoughts? Thanks.

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  • Why does my IMultiBindingConverter get an array of strings when used to set TextBox.Text?

    - by mcohen75
    Hi- I'm trying to use a MultiBinding with a converter where the child elements also have a converter. The XAML looks like so: <TextBlock> <TextBlock.Text> <MultiBinding Converter="{StaticResource localizedMessageConverter}" ConverterParameter="{x:Static res:Resources.RecordsFound}" > <Binding Converter="{StaticResource localizedMessageParameterConverter}" ConverterParameter="ALIAS" Path="Alias" Mode="OneWay" /> <Binding Converter="{StaticResource localizedMessageParameterConverter}" ConverterParameter="COUNT" Path="Count" Mode="OneWay" /> </MultiBinding> </TextBlock.Text> The problem I'm facing here is, whenever this is used with a TextBlock to specify the Text property, my IMultiValueConverter implementation gets an object collection of strings instead of the class returned by the IValueConverter. It seems that the ToString() method is called on the result of the inner converter and passed to the IMultiValueConverter. If used to specify the Content property of Label, all is well. It seems to me that the framework is assuming that the return type will be string, but why? I can see this for the MultiBinding since it should yield a result that is compatible with TextBlock.Text, but why would this also be the case for the Bindings inside a MultiBinding? If I remove the converter from the inner Binding elements, the native types are returned. In my case string and int.

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  • using CSS to center FLOATED input elements wrapped in a DIV

    - by Tim
    There's no shortage of questions and answers about centering but I've not been able to get it to work given my specific circumstances, which involve floating. I want to center a container DIV that contains three floated input elements (split-button, text, checkbox), so that when my page is resized wider, they go from this: ||.....[ ][v] [ ] [ ] label .....|| to this ||......................[ ][v] [ ] [ ] label.......................|| They float fine, but when the page is made wider, they stay to the left: ||.....[ ][v] [ ] [ ] label .......................................|| If I remove the float so that the input elements are stacked rather than side-by-side: [ ][v] [ ] [ ] label then they DO center correctly when the page is resized. SO it is the float being applied to the elements of the DIV#hbox inside the container that is messing up the centering. Is what I want to do impossible because of the way float is designed to work? Here is my DOCTYPE, and the markup does validate at w3c: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> Here is my markup: <div id="term1-container"> <div class="hbox"> <div> <button id="operator1" class="operator-split-button">equals</button> <button id="operator1drop">show all operators</button> </div> <div><input type="text" id="term1"></input></div> <div><input type="checkbox" id="meta2"></input><label for="meta2" class="tinylabel">meta</label></div> </div> </div> And here's the (not-working) CSS: #term1-container {text-align: center} .hbox {margin: 0 auto;} .hbox div {float:left; } I have also tried applying display: inline-block to the floated button, text-input, and checkbox; and even though I think it applies only to text, I've also tried applying white-space: nowrap to the #term1-container DIV, based on posts I've seen here on SO. And just to be a little more complete, here's the jQuery that creates the split-button: $(".operator-split-button").button().click( function() { alert( "foo" ); }).next().button( { text: false, icons: { primary: "ui-icon-triangle-1-s" } }).click( function(){positionOperatorsMenu();} ) })

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  • Doing extra initialisations on a MFC Dialog in Visual Studio 2008 Pro

    - by theunanonim
    How do I make extra initializations on a modal dialog before calling DoModal(); ? I have a main Dialog (the one that is created automatically when I select new MFC Application in Visual Studio 2008 Professional). When I click a button on this dialog I want to open another dialog and set a CString value into a CEdit control. my code: ... void OnClickedButtonX(){ SecondDialogClass Dlg2; Dlg2.asocVar2Cedit.SetWindowTextW(L"my text"); Dlg2.DoModal(); } //asocVar2Cedit is the associeted control variable to the //CEdit control on the second Dialog (Right Click > Add Variable.. in VSC++) ... this code generates a "Debug Assertion" error in winocc... Any ideas ? Thank you in advance.

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  • Possible to see what actual SQL queries Rails invokes when using console script?

    - by randombits
    Sometimes I like to pop open the console script that comes with Rails to test small excerpts of code. That code normally involves some more involved ActiveRecord queries. Although not an expert in ActiveRecord, I'm proficient with SQL and want to see what it's translating underneath the hood for efficiency purposes. This will help me refactor or rethink how I'm writing my app if it looks inefficient. Now when the query is in the actual application itself, it all shows up in logs. Ad-hoc ActiveRecord queries in the console do not though. Anyway to change that behavior?

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  • Ajax request. Which callback is executed first complete or success?

    - by Gutzofter
    I could spike this to find out, but I'm going to use SO. In my unit tests (qunit) I use the asynchShould (alias for asynchTest) test. Part of the assertion is to wait for the completion/success of the request. Like this: asyncShould('talk to customer list server', 1, function() { stop(2000); var forCustomerList = newCustomerListRequest(); forCustomerList.page = 'helpers/helper.php'; forCustomerList.data += '&action=customerListServer&DB=11001'; var originalSuccess = forCustomerList.success; forCustomerList.success = function(msg) { if (msg.flash !== undefined && msg.data !== undefined && msg.status !== undefined) { ok(true, 'json structure correct') } else { ok(false, 'json structure not correct'); } originalSuccess(msg); start(); }; testController.getServerData(forCustomerList); })

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  • How to remap a MacBook keyboard to windows keys in bootcamp?

    - by Ken Pespisa
    I just discovered bootcamp and I'm psyched that I can run Windows 7 RC on the MacBook Pro without using a virtual machine. However the virtual machines run a bit better because they support remapping the MacBook's keyboard. Currently I can't find an equivalent of the delete key (it is Fn + Delete when running Windows via Fusion or Parallels, but it doesn't work on a bootcamp install of Windows) Has anyone come up with a clever workaround?

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  • Keep outlook and Gmail contacts in Sync

    - by CFP
    What free (or better, open source) applications do you know of to keep outlook and Gmail contacts in sync? I need my outlook and Gmail accounts to be in sync, since my phone can only connect to Gmail... I've tried GO Contact Sync, but it won't preserve categories, and I also tried Gcontactsynchbut it seems outdated. Google Apps Sync is only for paying users, and Chapura too. Any application out there that does great sync between gmail and outlook? Thanks! CFP.

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  • Recalling import in module

    - by Isaiah
    I'm still learning python and after playing around with pygame I noticed I'm re-importing things in modules I'm importing that I've already imported. import pygame For instance I have some classes in a separate file, but I must also import pygame into that file too for them to work. Does it actually import the code twice? Will it slow down my program? Or does it just pull the same import from before, but if it does that, why would I need to import it? Is there anything like (load) in lisp that just pulls in the code like it is part of the main file? Thank You

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  • problem with sortrows MATLAB

    - by Jessy
    Hi, My question is related with the previous solved question in http://stackoverflow.com/questions/2925623/how-to-save-data-in-txt-file-in-matlab my problem is that, I decided to unsorted the output, however this error comes out when I removed the sortrows. And no error when I leave the sortrows I'm curious why.

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  • Get values from DB field into an array with PHP

    - by Adnan
    Hello, I have a field in my DB that holds value separated by commas like; $tmp_list = "COB,ISJ,NSJ," Now when I fetch that the row, I would like to have them in an array. I have used array($tmp_list) but I get the values in one line only like: [0] => 'COB,ISJ,NSJ,' instead of [0] => 'COB', [1] => 'ISJ', [2] => 'NSJ' All help is appriciated.

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  • How is your Mac set up for Windows development?

    - by Matt Brailsford
    Hi Guys, I'm looking at buying a MacBook Pro to replace my tiring laptop. My day to day job is as a .NET web developer so I am looking to use VMware Fusion to run VS and SQL server etc. As I've not run my dev environment in a VM before, I would like to know how others are setup. What apps to you have installed? In which environment? Where do you store your files? Within each environment, or some shared drive? Are there any gotchas? Or essentials I should know. Many thanks Matt

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  • Call overidden method in Dojo

    - by nomind
    In dojo, one cannot call a overidden superclass method outside of the same method in the derived class (for which there is this.inherited(), other than that one can call using class_name.function_name.apply). This feature is no longer there because of some refactoring and dojo guys are not going to put it back because they are not convinced about a good enough case for this. Please read this mail thread for details. Isn't there a good enough case for this functionality? Why or why not?

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  • Python with Wiimote using pywiiuse module

    - by Anon
    After seeing the abilities and hackibility of wiimotes I really want to use it in my 'Intro to programming' final. Everyone must make a python program and present it to the class. I want to make a game with pygame incorporating a wiimote. I found pywiiuse which is a very basic wrapper for the wiiuse library using c types. I can NOT get anything beyond LEDs and vibrating to work. Buttons, IR, motion sensing, nothing. I've tried different versions of wiiuse, pywiiuse, even python. I can't even get the examples that came with it to run. Here's the code I made as a simple test. I copied some of the example C++ code. from pywiiuse import * from time import sleep #Init wiimotes = wiiuse_init() #Find and start the wiimote found = wiiuse_find(wiimotes,1,5) #Make the variable wiimote to the first wiimote init() found wiimote = wiimotes.contents #Set Leds wiiuse_set_leds(wiimote,WIIMOTE_LED_1) #Rumble for 1 second wiiuse_rumble(wiimote,1) sleep(1) wiiuse_rumble(wiimote,0) #Turn motion sensing on(supposedly) wiiuse_motion_sensing(wiimote,1) while 1: #Poll the wiimotes to get the status like pitch or roll if(wiiuse_poll(wiimote,1)): print 'EVENT' And here's the output when I run it. wiiuse version 0.9 wiiuse api version 8 [INFO] Found wiimote [assigned wiimote id 1]. EVENT EVENT Traceback (most recent call last): File "C:\Documents and Settings\Nick\Desktop\wiimotetext.py", line 26, in <mod ule> if(wiiuse_poll(wiimote,1)): WindowsError: exception: access violation reading 0x00000004 It seems each time I run it, it prints out EVENT 2-5 times until the trace back. I have no clue what to do at this point, I've been trying for the past two days to get it working. Thanks!

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  • Ray-triangle intersetion

    - by gamemaker
    Hello! How can I test intersesion ray and triangle, and if it exist how to get distance from ray origin to intersection point?? What optimization I can use, if in my program I've got to check 1 ray to ~10000 triangles ??

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  • Doing extra initialisations on a MFC Dialog in Visual Studio C++ 2008 Pro

    - by theunanonim
    How do I make extra initializations on a modal dialog before calling DoModal(); ? The whole application is created using VS wizards. I have a main Dialog (the one that is created automatically when I select new MFC Application in Visual Studio 2008 Professional). When I click a button on this dialog I want to open another dialog and set a CString value into a CEdit control. my code: ... void MainDlg::OnClickedButtonX(){ SecondDialogClass Dlg2; Dlg2.asocVar2Cedit.SetWindowTextW(L"my text"); Dlg2.DoModal(); } //asocVar2Cedit is the associeted control variable to the //CEdit control on the second Dialog (Right Click > Add Variable.. in VSC++) ... this code generates at runtime a "Debug Assertion" error in winocc... Any ideas ? Thank you in advance.

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  • Drop shadow coordinate different from iPhone OS 3.2?

    - by Axel
    I'm trying to draw a custom view with a drop shadow. I'm having different results from iPhone OS 3.2. Has the coordinate system changed for CGContextSetShadowWithColor from 3.2? Here is the code I'm using: CGContextRef graphicContext = UIGraphicsGetCurrentContext(); CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB(); CGFloat values1[4] = { 0, 0, 0, 1}; CGColorRef blackColor = CGColorCreate (colorspace, values1); CGContextSetShadowWithColor(graphicContext, CGSizeMake(0, -1), 3, blackColor); CGColorRelease(blackColor); CGFloat values2[4] = { .5, .5, 1, 1}; CGColorRef fillColor = CGColorCreate (colorspace, values2); CGContextSetFillColorWithColor(graphicContext, fillColor); CGColorRelease(fillColor); CGContextFillRect(graphicContext,CGRectMake(40, 40, 100, 100)); Here is how it looks on 3.1 and from 3.2. All my views using drop shadow look different depending on the version of iPhone OS. Am I missing something?

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  • What is the fastest language? [closed]

    - by Murtez
    I'm looking to make a site with a database, user accounts, and possibly more later on (subscriptions, bidding, payment, any any possible # of upgrades). Website speed is VERY important, what is the fastest secure language / method to make it in?

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  • Scientific Data processing(Graph comparison and interpretation)

    - by pinkynobrain
    Hi stackoverflow friends, I'm trying to write a program to automate one of my more boring and repetative work tasks. I have some programming experience but none with processing or interpreting large volumes of data so i am seeking your advice(both suggestions of techneques to try and also things to read to learn more about doing this stuff). I have a piece of equipment that monitors an experiment by taking repeated samples and displays the readings on its screen as a graph. The input of experiment can be altered and one of these changes should produce a change in a section of the graph which i currently identify by eye and is what im looking for in the experiment. I want to automate it so that a computer looks at a set of results and spots the experiment input that causes the change. I can already extract the results from the machine. Currently they results for a run are in the form of an integer array with the index being the sample number and the corresponding value being the measurement. The overall shape of the graph will be similar for each experiment run. The change im looking for will be roughly the same and will occur in approximatly the same place every time for the correct experiment input. Unfortunatly there are a few gotcha's that make this problem more difficult. There is some noise in the measuring process which mean there is some random variation in the measured values between different runs. Although the overall shape of the graph remains the same. The time the experiment takes varies slightly each run causing two effects. First, the a whole graph may be shifted slightly on the x axis relative to another runs graph. Second, individual features may appear slightly wider or narrower in different runs. In both these cases the variation isn't particularly large and you can assume that the only non random variation is caused by the correct input being found. Thank you for your time, Pinky

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  • [Nameservers] Can I setup 5 ips to 1 server and have only 2 nameservers?

    - by Tyler
    So I have 1 computer with 5 IP's and around 15 sites being hosted. I have 4 of the ips setup to be dedicated for 4 sites and the rest share the 5th ip. When I'm setting up my name server, do I set it up at Godaddy my Registar or on my server's dns or both? Can I just setup NS1 - Add all the ips NS2 - Add all the ips And just have all the sites use those two name servers?

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