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  • Disable printing in adobe Flex

    - by Ankur Chauhan
    I am building my website in adobe flex(i am n00b). I have some photographs which I would like to make sure that people cannot print. I do understand that it is not possible to completely stop users from printing. But atleast disable the context menu or just the print option and the copy option. Any and all things about this is helpful

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  • Ruby vs Lua as scripting language for C++

    - by bl00dshooter
    I am currently building a game server (not an engine), and I want it to be extendable, like a plugin system. The solution I found is to use a scripting language. So far, so good. I'm not sure if I should use Ruby or Lua. Lua is easier to embed, but Ruby has a larger library, and better syntax (in my opinion). The problem is, there is no easy way I found to use Ruby as scripting language with C++, whereas it's very easy with Lua. Toughs about this? Suggestions for using Ruby as scripting language (I tried SWIG, but it isn't nearly as neat as using Lua)? Thanks.

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  • JavaScript: How can I delay running some JS code until my JS file downloaded?

    - by Henryh
    I have the following code: <script type="text/javascript"> function addScript(url) { var script = document.createElement('script'); script.src = url; document.getElementsByTagName('head')[0].appendChild(script); } addScript('http://example.com/One.js'); addScript('http://example.com/Two.js'); addScript('http://example.com/Three.js'); addScript('http://example.com/Four.js'); ... // run code below this point once Two.js has been downloaded and excuted </script> How can I detect when one of my JavaScript files has been downloaded and executed so that I can use it?

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  • validates_uniqueness_of...limiting scope - How do I restrict someone from creating a certain number

    - by bgadoci
    I have the following code: class Like < ActiveRecord::Base belongs_to :site validates_uniqueness_of :ip_address, :scope => [:site_id] end Which limits a person from "liking" a site more than one time based on a remote ip request. Essentially when someone "likes" a site, a record is created in the Likes table and I use a hidden field to request and pass their ip address to the :ip_address column in the like table. With the above code I am limiting the user to one "like" per their ip address. I would like to limit this to a certain number for instance 10. My initial thought was do something like this: validates_uniqueness_of :ip_address, :scope => [:site_id, :limit => 10] But that doesn't seem to work. Is there a simple syntax here that will allow me to do such a thing?

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  • What's the Build and Release Dev doing?

    - by Yongwei Xing
    Hi all I need someone give a career advice about the Build and Release Dev. I don't know what's exactly the uild and Release Dev do. What's the different between the Build and Release Dev and the regular product Dev? Do they have the same requirement? Or the regular product Dev need higher requirement? What do BRE dev do in their work? Best Regards,

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  • AI opponenet car logic in car race game.

    - by ashok patidar
    hello i want to develop AI car(opponent) in car race game what should be my direction to develop them with less complexity because i don't have any idea. because the player car is moving on the scrolling track plz suggest me should i have to use relative motion or way point concept but that should also be change on the scrolling track (i.e. player car movement)

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  • Do you feel threatened by younger developers?

    - by bobsmith123
    When an opportunity for a new project in my company presented itself, I volunteered with a little bit of skepticism but a lot of excitement. I have been working with this company for 5 years on a different project in which I was a team lead for several releases. I have a consistent track record of delivering good quality projects. The new project has a team that is built from ground up and the management decided to hire new developers. The technologies used are the latest ones that are different from the previous project I had worked on (although they both are in .NET). The newer and the younger developers in the team have more experience with the latest technologies from their previous gigs. The younger developers have a lot more energy, can work 14 hours a day (they remind me of my early 20s) and live on ramen noodles. Since they are new, I feel they are obligated to show what they are made of and to prove their mettle. I feel like I am sidelined in this project and the management obviously like the younger developers as they bring more to the table. I know ageism is rampant in our field and the more I think about this, the more it makes me feel that there are very few transferable skills from one project to the other and one day you could be a team lead managing a number of developers, the next day some one you hired becomes your boss. Do you see yourself in situations like this very often? What plans do you have to make yourself valuable in a long term perspective?

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  • How to decomment an html/php webpage?

    - by Sam
    A crazy question: Imagine a webpage file called somepage.php And it contains some html php contents in my editor I see: <html><head></head><body> <?=$welcome . $essay . $thatsAllForNowFolks . $footer ?> <!-- Blue Ball Bell Blow Bows Bats Beef Bark Bill Boss --> </body></html> When I browse my site I see those comments in the final result, while I only want that comment to be only in my editor for my secretive inspirations and don't want the whole world to know what I'm thinking when I'm developing, as well as I see those comments for any and all my website visitors as wasted bandwitch of internet speed. How do I decomment my entire html/php files at the moment the html is served? Ideas, code and suggestions are much appreciated. My thanks in advance...

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  • Stop output of image if no record - paperclip - Ruby on rails

    - by bgadoci
    I have just installed paperclip into my ruby on rails blog application. Everything is working great...too great. I am trying to figure out how to tell paperclip not to output anything if there is no record in the table so that I don't have broken image links everywhere. How, and where, do I do this? Here is my code: class Post < ActiveRecord::Base has_attached_file :photo, :styles => { :small => "150x150"} validates_presence_of :body, :title has_many :comments, :dependent => :destroy has_many :tags, :dependent => :destroy has_many :ugtags, :dependent => :destroy has_many :votes, :dependent => :destroy belongs_to :user after_create :self_vote def self_vote # I am assuming you have a user_id field in `posts` and `votes` table. self.votes.create(:user => self.user) end cattr_reader :per_page @@per_page = 10 end View <% div_for post do %> <div id="post-wrapper"> <div id="post-photo"> <%= image_tag post.photo.url(:small) %> </div> <h2><%= link_to_unless_current h(post.title), post %></h2> <div class="light-color"> <i>Posted <%= time_ago_in_words(post.created_at) %></i> ago </div> <%= simple_format truncate(post.body, :length => 600) %> <div id="post-options"> <%= link_to "Read More >>", post %> | <%= link_to "Comments (#{post.comments.count})", post %> | <%= link_to "Strings (#{post.tags.count})", post %> | <%= link_to "Contributions (#{post.ugtags.count})", post %> | <%= link_to "Likes (#{post.votes.count})", post %> </div> </div> <% end %>

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  • html css image alignment

    - by computerpro007
    Hi All, I have a question regarding image alignment with CSS. For example I have created a css class as below: .link { background: url("images/image1.gif") scroll right; } and below is the markup <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Untitled Document</title> <p class="link">This is a link</p> </head> <body> </body> </html> When I check in the browser I get the image on the text. I want it after the text i mean This is a link (this is where I want the image to appear)

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  • unresolved external symbol _D3D10CreateDeviceAndSwapChain@32 referenced in function "public: bool

    - by numerical25
    Having trouble creating my swap chain. I receive the following error. DX3dApp.obj : error LNK2019: unresolved external symbol _D3D10CreateDeviceAndSwapChain@32 referenced in function "public: bool __thiscall DX3dApp::InitDirect3D(void)" (?InitDirect3D@DX3dApp@@QAE_NXZ) Below is the code ive done so far. #include "DX3dApp.h" bool DX3dApp::Init(HINSTANCE hInstance, int width, int height) { mhInst = hInstance; mWidth = width; mHeight = height; if(!WindowsInit()) { return false; } if(!InitDirect3D()) { return false; } } int DX3dApp::Run() { MSG msg = {0}; while (WM_QUIT != msg.message) { while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) == TRUE) { TranslateMessage(&msg); DispatchMessage(&msg); } Render(); } return (int) msg.wParam; } bool DX3dApp::WindowsInit() { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = mhInst; wcex.hIcon = 0; wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = NULL; wcex.lpszClassName = TEXT("DirectXExample"); wcex.hIconSm = 0; RegisterClassEx(&wcex); // Resize the window RECT rect = { 0, 0, mWidth, mHeight }; AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE); // create the window from the class above mMainhWnd = CreateWindow(TEXT("DirectXExample"), TEXT("DirectXExample"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, mhInst, NULL); if (!mMainhWnd) { return false; } ShowWindow(mMainhWnd, SW_SHOW); UpdateWindow(mMainhWnd); return true; } bool DX3dApp::InitDirect3D() { DXGI_SWAP_CHAIN_DESC scd; ZeroMemory(&scd, sizeof(scd)); scd.BufferCount = 1; scd.BufferDesc.Width = mWidth; scd.BufferDesc.Height = mHeight; scd.BufferDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM; scd.BufferDesc.RefreshRate.Numerator = 60; scd.BufferDesc.RefreshRate.Denominator = 1; scd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; scd.OutputWindow = mMainhWnd; scd.SampleDesc.Count = 1; scd.SampleDesc.Quality = 0; scd.Windowed = TRUE; HRESULT hr = D3D10CreateDeviceAndSwapChain(NULL,D3D10_DRIVER_TYPE_REFERENCE, NULL, 0, D3D10_SDK_VERSION, &scd, &mpSwapChain, &mpD3DDevice); if(!hr != S_OK) { return FALSE; } ID3D10Texture2D *pBackBuffer; return TRUE; } void DX3dApp::Render() { } LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { // Allow the user to press the escape key to end the application case WM_KEYDOWN: switch(wParam) { // Check if the user hit the escape key case VK_ESCAPE: PostQuitMessage(0); break; } break; // The user hit the close button, close the application case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProc(hWnd, message, wParam, lParam); }

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  • Where can I take an online programming aptitude test/exam?

    - by nbolton
    A potential employer requires me to take an online aptitude test before my interview (in this case the test is for C, from Previsor). Where can I take the same (or similar) test so I have a rough idea on what I should brush up on? I've taken a similar test for C++ previously, so I have some idea of what to expect. I've also been studying my C books thoroughly (especially the required material as described in the PDF), but I feel it would be a good idea to get a feel for the particular test before taking it. I did a quick search on Brainbench, but they don't seem to have a C test, unless I'm mistaken (only C++). Note: I'm happy to pay to take a test if no decent free ones are available.

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  • Using AJAX to display error message Ruby on Rails

    - by bgadoci
    I have built a blog using Ruby on Rails. New to both. I am implementing AJAX pretty effectively until I get to the error handling portion. I allow for comments on posts and do this by rendering a comment partial and remote form in the /views/posts/show.html.erb page. Upon successful save of a comment the show page is updated using views/comments/create.js.rjs and displays a flash notice. I am simply trying to flash a notice when it doesn't save. Searched around and worked this a bit on my own. Can't get it to fly. Here is my code: /views/posts/show.html.erb <div id="comments"> <%= render :partial => @post.comments %> <div id="notice"><%= flash[:notice] %></div> </div> <% remote_form_for [@post, Comment.new] do |f| %> <p> <%= f.label :body, "New Comment" %><br/> <%= f.text_area (:body, :class => "textarea") %> </p> <p> <%= f.label :name, "Name" %><br/> <%= f.text_field (:name, :class => "textfield") %> </p> <p> <%= f.label :email, "Email" %><br/> <%= f.text_field (:email, :class => "textfield") %> </p> <p><%= f.submit "Add Comment" %></p> <% end %> /views/comments/_comment.html.erb <% div_for comment do %> <div id="comment-wrapper"> <% if admin? %> <div id="comment-destroy"><%=link_to_remote "X", :url => [@post, comment], :method => :delete %></div> <% end %> <%= h(comment.body) %><br/><br/> <div class="small">Posted <%= time_ago_in_words(comment.created_at) %> ago by <%= h(comment.name) %> <% if admin? %> | <%= h(comment.email) %> <% end %></div> </div> <% end %> /views/comments/create.js.rjs page.insert_html :bottom, :comments, :partial => @comment page[@comment].visual_effect :highlight page[:new_comment].reset page.replace_html :notice, flash[:notice] flash.discard CommentsController#create def create @post = Post.find(params[:post_id]) @comment = @post.comments.create!(params[:comment]) respond_to do |format| if @comment.save flash[:notice] = "Thanks for adding this comment" format.html { redirect_to @post } format.js else flash[:notice] = "Make sure you include your name and a valid email address" format.html { redirect_to @post } format.js end end end

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  • how to develop complete software suite/platform ?

    - by fwfwfw
    here's an example of a company selling complete software suite/platform www.ql2.com/technology/platform.php i wonder how are such suite/platforms developped ? do you have to use J2EE ? i am more interested in how this company is able to produce their own proprietary WebQL language. www.automationanywhere.com/products/AAServer.htm is another similar company selling "servers"....how are such proprietary servers developped with Java technology ?

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  • Android: How to invalidate multiple parts of screen

    - by user342731
    I need to be able to selectively invalidate multiple (about 20) rectangles on the screen for performance reasons, so tried the following: Vector<Rect> myRects = new Vector<Rect>(); // ... add some Rects to myRects for (Rect r : myRects) { invalidate(r); } However this seems to invalidates a union of all the Rect's, forming one large rectangle which covers all of small ones I'm trying to invalidate. How can one invalidate multiple areas on the screen, and only those areas?

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  • Is it possible to redirect non-HTML files with HTTP? And chaining redirects?

    - by Earlz
    Hello, I have been thinking about a neat way of load balancing and one thing that would be required is to be capable of loading an image on an HTML page from multiple locations without rewriting the URL(on each load) So what I need to be able to do is have one URL which is the "static" URL. Such as http://example.com/myimage.png The image is not actually contained in example.com though. So example.com does a either a 302 or 301 or 307 HTTP response to cause a redirect to 2.example.com. How do browsers handle this with images like in this situation? Also, how do browsers handle multiple redirections for instance if 2.example.com also didn't contain it and it went to 3.example.com ? (Note, I am asking this because I've never seen a 301 redirect on anything but an HTML page) Also, which status code would be best to use. 301 means "moved permanently" which this "move" isn't permanent so I don't want it cached. Should I use 307? Is that supported by search engines and modern browsers?

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  • JavaScript: how to create a JS event that requires 2 seperate JS files to be loaded first while down

    - by Teddyk
    I want to perform asynchronous JavaScript downloads of two files that have dependencies attached to them. // asynch download of jquery and gmaps function addScript(url) { var script = document.createElement('script'); script.src = url; document.getElementsByTagName('head')[0].appendChild(script); } addScript('http://google.com/gmaps.js'); addScript('http://jquery.com/jquery.js'); // define some function dependecies function requiresJQuery() { ... } function requiresGmaps() { ... } function requiresBothJQueryGmaps() { ... } // do some work that has no dependencies on either JQuery or Google maps ... // QUESTION - Pseudo code below // now call a function that requires Gmaps to be loaded if (GmapsIsLoaded) { requiresGmaps(); } // QUESTION - Pseudo code below // then do something that requires both JQuery & Gmaps (or wait until they are loaded) if (JQueryAndGmapsIsLoaded) { requiresBothJQueryGmaps(); } Question: How can I create an event to indicate when: JQuery is loaded? Google Maps is loaded JQuery & Google Maps are both loaded?

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  • Moving a unit precisely along a path in x,y coordinates

    - by Adam Eberbach
    I am playing around with a strategy game where squads move around a map. Each turn a certain amount of movement is allocated to a squad and if the squad has a destination the points are applied each turn until the destination is reached. Actual distance is used so if a squad moves one position in the x or y direction it uses one point, but moving diagonally takes ~1.4 points. The squad maintains actual position as float which is then rounded to allow drawing the position on the map. The path is described by touching the squad and dragging to the end position then lifting the pen or finger. (I'm doing this on an iPhone now but Android/Qt/Windows Mobile would work the same) As the pointer moves x, y points are recorded so that the squad gains a list of intermediate destinations on the way to the final destination. I'm finding that the destinations are not evenly spaced but can be further apart depending on the speed of the pointer movement. Following the path is important because obstacles or terrain matter in this game. I'm not trying to remake Flight Control but that's a similar mechanic. Here's what I've been doing, but it just seems too complicated (pseudocode): getDestination() { - self.nextDestination = remove_from_array(destinations) - self.gradient = delta y to destination / delta x to destination - self.angle = atan(self.gradient) - self.cosAngle = cos(self.angle) - self.sinAngle = sin(self.angle) } move() { - get movement allocation for this turn - if self.nextDestination not valid - - getNextDestination() - while(nextDestination valid) && (movement allocation remains) { - - find xStep and yStep using movement allocation and sinAngle/cosAngle calculated for current self.nextDestination - - if current position + xStep crosses the destination - - - find x movement remaining after self.nextDestination reached - - - calculate remaining direct path movement allocation (xStep remaining / cosAngle) - - - make self.position equal to self.nextDestination - - else - - - apply xStep and yStep to current position - } - round squad's float coordinates to integer screen coordinates - draw squad image on map } That's simplified of course, stuff like sign needs to be tweaked to ensure movement is in the right direction. If trig is the best way to do it then lookup tables can be used or maybe it doesn't matter on modern devices like it used to. Suggestions for a better way to do it? an update - iPhone has zero issues with trig and tracking tens of positions and tracks implemented as described above and it draws in floats anyway. The Bresenham method is more efficient, trig is more precise. If I was to use integer Bresenham I would want to multiply by ten or so to maintain a little more positional accuracy to benefit collisions/terrain detection.

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  • Do you take the pain of learning it or use an out of the box solution?

    - by Mantorok
    Hi all What I'm getting at here is being presented with a control or framework that does 95% of what you want but has its shortcomings when opposed to learning how to do it yourself. To give a good example (ASP.Net) UpdatePanel vs DIY JS/JSON. The UpdatePanel gives you AJAX instantly without doing anything additional, however I've come to learn that its shortcomings are mainly that it's a bit of a hack and performs badly on busy pages and I've found myself having to scrap UpdatePanels in favour of rolling my own JS, and I've now made it a habit to fully investigate any shortcomings in out-of-the-box solutions, as I've been stung by this experience. So I guess what I'm asking is: Is it better to find out how to DIY or is it considered a better approach to try the available solution and risk going a full circle? Obviously I've only targetted a single control, but it is a very attractive control to people learning AJAX - I'm sure there are others out there. Sorry if dupliate. Thanks

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  • How to extract delegates from ViewController class?

    - by adranle
    Hi I have the problem that my view controller class has too many delegates and starts to get big. I want to write the delegates in separate classes to keep the view controller class small. For delegates that are programmatically created (like UIAlertViewDelegate) I could do it easily. The problem is in the delegates assigned in Interface Builder. How can I tell the IB to assign, for example, another class as the UITableViewDelegate or UITableViewDataSource? Or how to choose another IBAction method for a Touch UP inside Event on a button? One solution would be to delete the connections from IB and write them programmatically at ViewDidLoad, but since I have a lot of ViewControllers, this would take a long time. any other ideas?

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