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  • Android ViewFlipper is out of control

    - by Doug Miller
    I have an app that uses a ViewFlipper to display some text and images. I have the flipper's flipinterval set to 10 seconds, but also want to allow the user to click a button that will advance the flipper. The code blow works great on 2.2, the view is changed every 10 seconds and if I click flip_button the view is changed and the auto flip steps back in 10 seconds later. The 1.5 and 1.6 versions will remember the manual advance and it will happen every time in the rotation. What am I missing? private void initFlipButton(){ final ImageView flip_button = (ImageView) findViewById(R.id.flip_button); info_button.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { flipper.stopFlipping(); flipper.showNext(); flipper.startFlipping(); } }); } private void initFlipper(){ flipper = (ViewFlipper) findViewById(R.id.flip_dog); flipper.setFlipInterval(10000); flipper.setInAnimation(inFromRightAnimation()); flipper.setOutAnimation(outToLeftAnimation()); flipper.startFlipping(); }

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  • First version of Linux

    - by dole doug
    Hi there I've heard many times that Linus Torvalds is a genius when it comes to writing good code. I also wish to write good code and I'd like to see how the first version of Linux was written. Does anyone know where I can find the first version of Linux? I'm looking for the first version (not 1.0) because I think it will be smaller and easier to understand. Many thanks.

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  • How secure is my website?

    - by Doug
    As a beginning web developer, I try my best to clean up all the user inputs through checks and what not. However, today, I found out my website was hacked (I'll share their website on request) and it really made my wonder how did they do it. I'm in the process of getting my website back together. What should I do to prevent these things? Is there people I should talk to and ask how secure my website is? What can I do to to keep my website safe?

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  • Question about AJAX

    - by Doug
    function showHint(str) { if (window.XMLHttpRequest) { xmlhttp=new XMLHttpRequest(); } else { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("games").innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","hw9.database.php?name="+str,true); xmlhttp.send(); } I'm learning AJAX at the moment. The code here basically receives the echo from the PHP and then puts it in element id games. My question is, if I wanted to have AJAX send 3 different http requests to 3 different PHP scripts and if I wanted to retrieve data from each one and then put it in 3 different element id's then would I make 3 copies of this same function? I would imagine that there should be a more efficient way. Thanks!

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  • Mapping US zip code to time zone

    - by Doug Kavendek
    When users register with our app, we are able to infer their zip code when we validate them against a national database. What would be the best way to determine a good potential guess of their time zone from this zip code? We are trying to minimize the amount of data we explicitly have to ask them for. They will be able to manually set the time zone later if our best guess is wrong. I realize zip codes won't help with figuring out the time zone outside the US, but in that case we'd have to manually ask anyway, and we deal predominantly with the US regardless. I've found a lot of zip code databases, and so far only a few contain time zone information, but those that do are not free, such as this one. If it's absolutely necessary to pay a subscription to a service in order to do this, then it will not be worth it and we will just have to ask users explicitly. Although language isn't particularly relevant as I can probably convert things however needed, we're using PHP and MySQL.

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  • Are there pitfalls to using static class/event as an application message bus

    - by Doug Clutter
    I have a static generic class that helps me move events around with very little overhead: public static class MessageBus<T> where T : EventArgs { public static event EventHandler<T> MessageReceived; public static void SendMessage(object sender, T message) { if (MessageReceived != null) MessageReceived(sender, message); } } To create a system-wide message bus, I simply need to define an EventArgs class to pass around any arbitrary bits of information: class MyEventArgs : EventArgs { public string Message { get; set; } } Anywhere I'm interested in this event, I just wire up a handler: MessageBus<MyEventArgs>.MessageReceived += (s,e) => DoSomething(); Likewise, triggering the event is just as easy: MessageBus<MyEventArgs>.SendMessage(this, new MyEventArgs() {Message="hi mom"}); Using MessageBus and a custom EventArgs class lets me have an application wide message sink for a specific type of message. This comes in handy when you have several forms that, for example, display customer information and maybe a couple forms that update that information. None of the forms know about each other and none of them need to be wired to a static "super class". I have a couple questions: fxCop complains about using static methods with generics, but this is exactly what I'm after here. I want there to be exactly one MessageBus for each type of message handled. Using a static with a generic saves me from writing all the code that would maintain the list of MessageBus objects. Are the listening objects being kept "alive" via the MessageReceived event? For instance, perhaps I have this code in a Form.Load event: MessageBus<CustomerChangedEventArgs>.MessageReceived += (s,e) => DoReload(); When the Form is Closed, is the Form being retained in memory because MessageReceived has a reference to its DoReload method? Should I be removing the reference when the form closes: MessageBus<CustomerChangedEventArgs>.MessageReceived -= (s,e) => DoReload();

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  • Call a KeyDown Event

    - by Doug
    All I need is to be able to click a button and have it do the KeyDown event for Enter, I've tired doing KeyDownCheck(13); and similar things, and I can get into the KeyDown event, but I can't get it to recognize that I want Enter, and it doesn't go to any specific key. Is there a specific way to put this in? Thanks in advance

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  • How can I use HTML 5?

    - by Doug
    I want to get ready for HTML 5 and start playing around with it. Do I need to install it or something before using it? How does it work? I'm currently on shared hosting.

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  • C++0x rvalue references and temporaries

    - by Doug
    (I asked a variation of this question on comp.std.c++ but didn't get an answer.) Why does the call to f(arg) in this code call the const ref overload of f? void f(const std::string &); //less efficient void f(std::string &&); //more efficient void g(const char * arg) { f(arg); } My intuition says that the f(string &&) overload should be chosen, because arg needs to be converted to a temporary no matter what, and the temporary matches the rvalue reference better than the lvalue reference. This is not what happens in GCC and MSVC. In at least G++ and MSVC, any lvalue does not bind to an rvalue reference argument, even if there is an intermediate temporary created. Indeed, if the const ref overload isn't present, the compilers diagnose an error. However, writing f(arg + 0) or f(std::string(arg)) does choose the rvalue reference overload as you would expect. From my reading of the C++0x standard, it seems like the implicit conversion of a const char * to a string should be considered when considering if f(string &&) is viable, just as when passing a const lvalue ref arguments. Section 13.3 (overload resolution) doesn't differentiate between rvalue refs and const references in too many places. Also, it seems that the rule that prevents lvalues from binding to rvalue references (13.3.3.1.4/3) shouldn't apply if there's an intermediate temporary - after all, it's perfectly safe to move from the temporary. Is this: Me misreading/misunderstand the standard, where the implemented behavior is the intended behavior, and there's some good reason why my example should behave the way it does? A mistake that the compiler vendors have somehow all made? Or a mistake based on common implementation strategies? Or a mistake in e.g. GCC (where this lvalue/rvalue reference binding rule was first implemented), that was copied by other vendors? A defect in the standard, or an unintended consequence, or something that should be clarified?

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  • Better explanation of $this-> in this example please

    - by Doug
    Referring to this question: http://stackoverflow.com/questions/2035449/why-is-oop-hard-for-me class Form { protected $inputs = array(); public function makeInput($type, $name) { echo '<input type="'.$type.'" name="'.$name.'">'; } public function addInput($type, $name) { $this->inputs[] = array("type" => $type, "name" => $name); } public function run() { foreach($this->inputs as $array) { $this->makeInput($array['type'], $array['name']; } } } $form = new form(); $this->addInput("text", "username"); $this->addInput("text", "password");** Can I get a better explanation of what the $this->input[] is doing in this part: public function addInput($type, $name) { $this->inputs[] = array("type" => $type, "name" => $name); }

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  • Is there a mode for different Paypal IPN?

    - by Doug
    I have a donation script at this moment where the user inputs the donation amount on the Paypal website. The problem with this is that some people donate $0.30 which equates to $0 after Paypal fees. I want to put first check the amount donated using an input on my website and then send off the amount to the Paypal website where they can continue to enter their credit card information and what not. How do I do this? Do I have to change to another mode? or am I supposed to send the amount to Paypal and then they'll know how it's handled?

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  • How to find the one Label in DataList that is set to True

    - by Doug
    In my .aspx page I have my DataList: <asp:DataList ID="DataList1" runat="server" DataKeyField="ProductSID" DataSourceID="SqlDataSource1" onitemcreated="DataList1_ItemCreated" RepeatColumns="3" RepeatDirection="Horizontal" Width="1112px"> <ItemTemplate> ProductSID: <asp:Label ID="ProductSIDLabel" runat="server" Text='<%# Eval("ProductSID") %>' /> <br /> ProductSKU: <asp:Label ID="ProductSKULabel" runat="server" Text='<%# Eval("ProductSKU") %>' /> <br /> ProductImage1: <asp:Label ID="ProductImage1Label" runat="server" Text='<%# Eval("ProductImage1") %>' /> <br /> ShowLive: <asp:Label ID="ShowLiveLabel" runat="server" Text='<%# Eval("ShowLive") %>' /> <br /> CollectionTypeID: <asp:Label ID="CollectionTypeIDLabel" runat="server" Text='<%# Eval("CollectionTypeID") %>' /> <br /> CollectionHomePage: <asp:Label ID="CollectionHomePageLabel" runat="server" Text='<%# Eval("CollectionHomePage") %>' /> <br /> <br /> </ItemTemplate> </asp:DataList> And in my code behind using the ItemCreated event to find and set the label.backcolor property. (Note:I'm using a recursive findControl class) protected void DataList1_ItemCreated(object sender, DataListItemEventArgs e) { foreach (DataListItem item in DataList1.Items) { if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { Label itemLabel = form1.FindControlR("CollectionHomePageLabel") as Label; if (itemLabel !=null || itemLabel.Text == "True") { itemLabel.BackColor = System.Drawing.Color.Yellow; } } When I run the page, the itemLabel is found, and the color shows. But it sets the itemLabel color to the first instance of the itemLabel found in the DataList. Of all the itemLabels in the DataList, only one will have it's text = True - and that should be the label picking up the backcolor. Also: The itemLabel is picking up a column in the DB called "CollectionHomePage" which is True/False bit data type. I must be missing something simple... Thanks for your ideas.

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  • PHP, MVC, 404 - How can I redirect to 404?

    - by Doug
    I'm trying to build my own MVC as a practice and learning experience. So far, this is what I have: <?php require "config.php"; $page = $_GET['page']; if( isset( $page ) ) { echo "isset is true"; if( file_exists( MVCROOT . "/$page.php" ) ) { include "$page.php"; } else { header("HTTP/1.0 404 Not Found"); } } ?> My problem here is, I can't use header to send to a 404 because the headers have been send already. Should I just redirect to a 404.html or is there a better way? Feel free to critique what I have so far (it's very little). I would love suggestions and ideas. Thanks!

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  • Java Stopping JApplet Components from Resizing based on Applet Size

    - by Doug
    Creating a JApplet I have 2 Text Fields, a button and a Text Area. private JPanel addressEntryPanel = new JPanel(new GridLayout(1,3)); private JPanel outputPanel = new JPanel(new GridLayout(1,1)); private JTextField serverTf = new JTextField(""); private JTextField pageTf = new JTextField(""); private JTextArea outputTa = new JTextArea(); private JButton connectBt = new JButton("Connect"); private JScrollPane outputSp = new JScrollPane(outputTa); public void init() { setSize(500,500); setLayout(new GridLayout(3,1)); add(addressEntryPanel); addressEntryPanel.add(serverTf); addressEntryPanel.add(pageTf); addressEntryPanel.add(connectBt); addressEntryPanel.setPreferredSize(new Dimension(50,50)); addressEntryPanel.setMaximumSize(addressEntryPanel.getPreferredSize()); addressEntryPanel.setMinimumSize(addressEntryPanel.getPreferredSize()); add(outputPanel); outputPanel.add(outputSp); outputTa.setLineWrap(true); connectBt.addActionListener(this); The problem is when debugging and putting it in a page the components / panels resize depending on the applet size. I don't want this. I want the textfields to be a certain size, and the text area to be a certain size. I've put stuff in there to set the size of them but they aren't working. How do I go about actually setting a strict size for either the components or the JPanel.

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  • In Sinatra, best way to serve iPhone layout vs. normal layout?

    - by Doug
    I'm writing a Sinatra app which needs to render different layouts based on whether the user is using an iPhone or a regular browser. I can detect the browser type using Rack-Mobile-Detect but I'm not sure of the best way to tell Sinatra which layout to use. Also, I have a feeling that how I choose to do this may also break page caching. Is that true? Example code: require 'sinatra/base' require 'haml' require 'rack/mobile-detect' class Orca < Sinatra::Base use Rack::MobileDetect helpers do def choose_layout if request.env['X_MOBILE_DEVICE'] == :iPhone # use iPhone layout else # use normal layout end end end before do # should I use a before filter? choose_layout() end get '/' do haml :home # with proper layout end end #Class Orca

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  • Getting started with subversion but...

    - by Doug
    I have never used any type of source control before and I am interested in getting it to subversion. However, I am on shared hosting (DreamHost). How can I get subversion to work? Is there any shared hosting that allows it?

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  • Handling missing/incomplete data in R

    - by doug
    As you would expect from a DSL aimed at data analysts, R handles missing/incomplete data very well, for instance: Many R functions have an 'na.rm' flag that you can set to 'T' to remove the NAs, but if you want to deal with this before the function call, then: to replace each 'NA' w/ 0: ifelse(is.na(vx), 0, vx) to remove each 'NA': vx = vx[!is.na(a)] to remove entire each row that contains 'NA' from a data frame: dfx = dfx[complete.cases(dfx),] All of these functions remove 'NA' or rows with an 'NA' in them. Sometimes this isn't quite what you want though--making an 'NA'-excised copy of the data frame might be necessary for the next step in the workflow but in subsequent steps you often want those rows back (e.g., to calculate a column-wise statistic for a column that has missing rows caused by a prior call to 'complete cases' yet that column has no 'NA' values in it). to be as clear as possible about what i'm looking for: python/numpy has a class, 'masked array', with a 'mask' method, which lets you conceal--but not remove--NAs during a function call. Is there an analogous function in R?

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  • C++ syntax issue

    - by Doug
    It's late and I can't figure out what is wrong with my syntax. I have asked other people and they can't find the syntax error either so I came here on a friend's advice. template <typename TT> bool PuzzleSolver<TT>::solve ( const Clock &pz ) { possibConfigs_.push( pz.getInitial() ); vector< Configuration<TT> > next_; //error is on next line map< Configuration<TT> ,Configuration<TT> >::iterator found; while ( !possibConfigs_.empty() && possibConfigs_.front() != pz.getGoal() ) { Configuration<TT> cfg = possibConfigs_.front(); possibConfigs_.pop(); next_ = pz.getNext( cfg ); for ( int i = 0; i < next_.size(); i++ ) { found = seenConfigs_.find( next_[i] ); if ( found != seenConfigs_.end() ) { possibConfigs_.push( next_[i] ); seenConfigs_.insert( make_pair( next_[i], cfg ) ); } } } } What is wrong? Thanks for any help.

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  • Compare output of program to correct program using bash script, without using text files

    - by Doug
    I've been trying to compare the output of a program to known correct output by using a bash script without piping the output of the program to a file and then using diff on the output file and a correct output file. I've tried setting the variables to the output and correct output and I believe it's been successful but I can't get the string comparison to work correctly. I may be wrong about the variable setting so it could be that. What I've been writing: TEST=`./convert testdata.txt < somesampledata.txt` CORRECT="some correct output" if [ "$TEST"!="$CORRECT" ]; then echo "failed" fi

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  • Does Google crawl AJAX content?

    - by Doug
    On the home page of my site I use JQuery's ajax function to pull down a list of recent activity of users. The recent activity is displayed on the page, and each line of the recent activity includes a link to the user profile of the user who did the activity. Will Google actually make the ajax call to pull down this info and use it in calculating page relevancy / link juice flow? I'm hoping that it does not because the user profile pages are not very Google index worthy, and I don't want all those links to the User profile pages diluting my home page's link juice flow away from other more important links.

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  • Script Speed vs Memory Usage

    - by Doug Neiner
    I am working on an image generation script in PHP and have gotten it working two ways. One way is slow but uses a limited amount of memory, the second is much faster, but uses 6x the memory . There is no leakage in either script (as far as I can tell). In a limited benchmark, here is how they performed: -------------------------------------------- METHOD | TOTAL TIME | PEAK MEMORY | IMAGES -------------------------------------------- One | 65.626 | 540,036 | 200 Two | 20.207 | 3,269,600 | 200 -------------------------------------------- And here is the average of the previous numbers (if you don't want to do your own math): -------------------------------------------- METHOD | TOTAL TIME | PEAK MEMORY | IMAGES -------------------------------------------- One | 0.328 | 540,036 | 1 Two | 0.101 | 3,269,600 | 1 -------------------------------------------- Which method should I use and why? I anticipate this being used by a high volume of users, with each user making 10-20 requests to this script during a normal visit. I am leaning toward the faster method because though it uses more memory, it is for a 1/3 of the time and would reduce the number of concurrent requests.

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  • What am I doing wrong for this submenu to not appear?

    - by Doug
    I'm new to jQuery, so please bear with me. I'm trying to make my submenu appear on hover. The second set of <ul> is for submenu. $(document).ready(function(){ $('ul.menu.li').hover( function() { $('ul', this).css('display', 'block'); }, function() { $('ul', this).css('display', 'none'); }); }); <ul id="menu"> <li><a href="#">Item 1</a><li> <ul> <li>Hi</li> </ul> <li><a href="#">Item 2</a></li> </ul>

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