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  • How to make a Scala Applet whose Applet class is a singleton?

    - by Jamie
    Hi, I don't know if a solution exists but it would be highly desirable. I'm making a Scala Applet, and I want the main Applet class to be a singleton so it can be accessed elsewhere in the applet, sort of like: object App extends Applet { def init { // do init here } } Instead I have to make the App class a normal instantiatable class otherwise it complains because the contructor is private. So the ugly hack I have is to go: object A { var pp: App = null } class App extends Applet { A.pp = this def init { // do init here } } I really hate this, and is one of the reasons I don't like making applets in Scala right now. Any better solution? It would be nice...

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  • Why hasn't functional programming taken over yet?

    - by pankrax
    I've read some texts about declarative/functional programming (languages), tried out Haskell as well as written one myself. From what I've seen, functional programming has several advantages over the classical imperative style: Stateless programs; No side effects Concurrency; Plays extremely nice with the rising multi-core technology Programs are usually shorter and in some cases easier to read Productivity goes up (example: Erlang) Imperative programming is a very old paradigm (as far as I know) and possibly not suitable for the 21st century Why are companies using or programs written in functional languages still so "rare"? Why, when looking at the advantages of functional programming, are we still using imperative programming languages? Maybe it was too early for it in 1990, but today?

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  • Oversize cursor in Firefox form with textbox background image

    - by Gogster
    Hi all, I have a webform with background images on the textboxes to give them a nice rounded corner. In Chrome the textboxes work as expected, however, if I view the form in Firefox the cursor appears to size to the height of the image, but the text is a normal size. Is there a way to override this oversized cursor? Here is the CSS of the textbox: .ed_form_textbox { width:319px; height:34px; margin-bottom:10px; padding-left:10px; background: transparent url( "/images/textbox.png" ) no-repeat bottom left; position:relative; border:none; } Thanks.

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  • Is there simple way to play an rtp video/audio stream in WPF?

    - by Robin
    I need to create a WPF control that will play an rtp stream with the requirement that the latency needs to be as low as possible. I've looked at the following two projects: http://vlcdotnet.codeplex.com/ http://wpfmediakit.codeplex.com/ As far as I know, I can't use VLC because we're shipping a commercial application with a more restrictive license than GPL (i.e. we can't ship our source). Wpf media kit is nice, but I can't seem to find a good/free rtp directshow source filter and I wanted to ask if there is a simpler solution out there that I'm missing before I jump into writing my own. Any ideas?

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  • How can I truncate the mangled C++ identifiers shown by GDB's disassemble command?

    - by Rhys Ulerich
    GDB's disassemble command is nice for short C identifiers, e.g. main. For long, mangled C++ identifiers the verbosity is overkill. For example, using icpc I see results like (gdb) disassemble 0x49de2f 0x49de5b Dump of assembler code from 0x49de2f to 0x49de5b: 0x000000000049de2f <_ZN5pecos8suzerain16fftw_multi_array6detail18c2c_buffer_processIPA2_dPKSt7complexIdEilNS2_26complex_copy_differentiateIS4_EEEEvT_T1_T2_T0_SD_SE_RKT3_+167>: mov 0x18(%rsp),%rsi Displays that long are annoying in the CLI. They make GDB's TUI assembly display all but useless. Is there a way to tell GDB to show a truncated identifier? Say clip all but 50 characters?

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  • JavaScript helper libraries? No DOM or AJAX stuff

    - by Melmacian
    As I'm writing JavaScript I'm always missing some fairly basic language features that JavaScript just don't have. So is there any library that would bring such features as trim, sprintf, str.endwith and etc. functions to JavaScript ? I just have written those functions too many times and I'm also tired of copy/pasting them from my old code. It would be nice to have some library which has those implemented and tested in one place. Note that I'm not talking about Ajax/DOM-libraries like jQuery or Dojo and such. I know that those libraries bring some of the features that I'm talking here, but not all. And I would like to have also an environment independent library so that same library could be used with server side JavaScript . Best library so far that I've found is php.js, but I don't like how it is polluting the global namespace. I'm also not too fond of how PHP-functions are named.

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  • How do I close a form when the ESC key was hit, but only if no Control handled it?

    - by Gabriel
    I have a Form that closes itself when the ESC key is pressed, thanks to KeyPreview, ProcessKeyEventArgs, ProcessCmdKey or whatever. But I have a Control on that form that does very relevant things when ESC is pressed (it hides itself) and the Form should not be closed when that happens. The control uses the KeyDown event and sets the SuppressKeyPress flag to true, but that happens after the aforementioned form key preview, thus having no effect. Is there some sort KeyPostview ? How do I not close the form when a Control has a relevant use of a key hit ? Edit: The control handling ESC is a textbox embedded in a hand-maid ListView. The textbox appears when the user clicks a cell, enabling edition. To validate the new text, ENTER would be nice (that already works, as giving the focus to anything else). To cancel edition, ESC seems most natural.

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  • How to find out the dimensionality of print paper in javascript

    - by tzador
    I am generating reports in HTML formats, and want to print them automatically using Qt (qt has a webkit based browser, and one can render its contents to a PDF file). I want to position the elements of the report depending on the target page size. For that i need to access the size of the paper (preferably in pixels). Since i am using webkit, it has all the latest html5 and css3 features. is there some api available to access printed page properties inside javascript. for example, would be nice to write: window.print_paper.width or window.print_paper.height Thank you in advance

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  • Two view App with root template view

    - by Tieman
    Hi I was wanted to do Application witch have a root template view with a nice logo on top or something adn load other views just below (here is what I have right now: Test App ) But I have a little problem. If I'll remove a comment in file TestAppDelegate.m on line 58 //[currentView release]; Application will crash with bunch of errors when I try to switch views. But if I comment this line Project analyzer is telling me that I have a potential leak with currentView variable. Can somebody spare some time and see in that code what I did wrong?

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  • Font for mac osx that is as readable and compact as the default xterm (X11) font.

    - by dreeves
    The font used in xterms is extremely compact yet readable. What font is that? The closest I've found that I can use in other other applications is DejaVu Sans Mono or Bitstream Vera Sans Mono. Those are as compact as xterms vertically but take up more space horizontally. I'd really like to switch from xterms to Terminal.app and this is the one thing holding me back. (I also think that font would be much better for emacs, xcode, or whatever editor.) ADDED: In Terminal.app you can adjust the character and line spacing for any font. Is this possible in other applications? I'm open to any other font that is as compact and readable as the xterm font. Dina looks really nice but it doesn't seem to work for Mac.

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  • Subtracting two lists in Python

    - by wich
    In Python, How can one subtract two non-unique, unordered lists? Say we have a = [0,1,2,1,0] and b = [0, 1, 1] I'd like to do something like c = a - b and have c be [2, 0] or [0, 2] order doesn't matter to me. This should throw an exception if a does not contain all elements in b. Note this is different from sets! I'm not interested in finding the difference of the sets of elements in a and b, I'm interested in the difference between the actual collections of elements in a and b. I can probably work this out with a for loop, looking up the first element of b in a and then removing the element from b and from a, etc. But this doesn't appeal to me, I'd like to do this with list comprehension in a nice and easy way. Is this possible?

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  • How to find thousands of company names?

    - by schefdev
    How can I find or generate thousands of company names for testing and demo purposes? (Address, phone number, and related information would be nice too.) I've got a system I'm building which includes business contact information. Pretty common no doubt. My test/demo database currently has randomly generated individual's names loaded (thanks to a handy IRS spreadsheet I found). This has worked great for internal testing and review purposes, but it looks really odd when shown to prospective customers. I've tried various online public information sources (e.g. EDGAR, and county based property records searches), but these all require me to manually stitch together the results in blocks of 50 names or so at a time. I could do this, but was really hoping for a search service or data store out there that had this type of information readily searchable and retrievable in very large batches.

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  • WebView with NSShadow slowdown

    - by Rodrigo
    I have a webview that shows some animated boxes, but it slows down and lags horribly when I put a drop shadow in the view. Without the shadow, the webview contents animate smoothly. I achieved a similar effect as safari/chrome when you do a elastic scroll with the touchpad. Looks nice! But doesnt run as smooth as in my inspirations. Here is the snippet of the shadow setting: NSShadow *dropShadow = [[NSShadow alloc] init]; [dropShadow setShadowColor:[NSColor blackColor]]; [dropShadow setShadowOffset:NSMakeSize(0, 0)]; [dropShadow setShadowBlurRadius:5.0]; [webview setWantsLayer: YES]; [webview setShadow: dropShadow]; [dropShadow release]; -- My question is: How can I work around this problem?

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  • HTML: When i hide a textbox in a Table, is it expected that the table reformats the space?

    - by Michel
    Hi, i have a input type=text in a table (in a TD actually) When a user clicks a checkbox, the input is hidden with Jquery (via the hide method) This makes the style of the input to "display:none;" So far so good. Now, when that has happened, the row where the cell is in is shrunk (the height is lowered) because the only thing left in the row is a <span>, which height is lower than the input height. The net result of this is that the row gets smaller, and when you click the checkbox again the input re-appers and the row gets larger. That doesn't look so nice, so i wondered if there was a way to prevent this? And second: is this the way it should work (the table resizing)?

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  • Interpolation on Cubism graphs

    - by Abe Stanway
    Cubism was designed, by mbostock's own words, for maximum information density - which means it generally wants to display one datapoint per pixel. While this is useful in many cases, it doesn't help when your data itself is not that dense. In these cases, you get ugly, staccato-style graphs like so: Is there a way to interpolate my data/graph within Cubism to show a nice, smoothed graph? EDIT: After adding keepLastValue to the metric, I get this: Here is the same data as shown in Graphite: I would like to smooth the Cubism view to look more like Graphite (with the added awesomeness of the horizon overplotting)

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  • WINSDK: Determining whether an arbitrary pid identifies a running process on Windows

    - by Vlad Romascanu
    Attempting to implement a poor man's test of whether a process is still running or not (essentially an equivalent of the trivial kill(pid, 0).) Hoped to be able to simply call OpenProcess with some minimal desired access then test for either GetLastError() == ERROR_INVALID_PARAMETER or GetExitCodeProcess(...) != STILL_ACTIVE. Nice try... Running on Windows XP, as administrator: HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid); if (!hProc) { DWORD dwLastError = GetLastError(); } ...fails miserably with dwLastError == ERROR_ACCESS_DENIED when pid is owned by a different (not SYSTEM) user. Moreover, if pid was originally owned by a different user but has since terminated, OpenProcess also fails with ERROR_ACCESS_DENIED (not ERROR_INVALID_PARAMETER.) Do I have to use Process32First/Process32Next or EnumProcesses? I absolutely do not want to use SeDebugPrivilege. Thanks, V

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  • How can I move app.config to a different folder inside the Solution Explorer?

    - by Coder7862396
    I'm using Visual Studio 2010. In my Solution Explorer I like to sort my Project items into folders (a folder for Forms, a folder for Classes, a Misc folder, etc.) It seems though that if I move the "app.config" file to a folder named "Config Files" everything works until I change a setting in the Settings.settings file. Once I do that, a new app.config is created and the one that was in the "Config Files" folder did not get updated. I have searched the entire solution for the text "app.config" and did not find any results. How can I move this file so that my Solution Explorer looks nice and clean?

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  • Generate matrix with value flags

    - by pagid
    I do have a solution for the following problem but it's quite ugly and it can most likely be done in a much shorter way. Would be great to get your help. My input looks like this: C1 C2 A B B D D C A D and my output should look like this: A B C D 1 1 0 0 0 1 0 1 0 0 1 1 1 0 0 1 My current solution is: index <- unique(unlist(input[,1:2])) output <- matrix(0,nrows=dim(input),ncols=length(index)) for(i in 1:dim(input)) { output[i, input[i,]$C1] <- 1 output[i, input[i,]$C2] <- 1 } Of course 4-5 lines is actually fine - but even as an R beginner this doesn't feel right to use a for loop. Besides that my actual data has much more than two columns, therefore this doesn't look nice in the end. How would I do that in a smarter way? Cheers

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  • Selecting peculiar XML tags with phpQuery

    - by Aristotle
    phpQuery is a really nice tool which has helped me tremendously in the past parse well-formed XHTML and XML documents, but I have recently run into a problem trying to select elements that have colons in their tagname, such as the following: <isc:thumb><![CDATA[http://example.com/foo_thumb.jpg]]></isc:thumb> I've tried to use the pq() function to select all of these elements: foreach ( pq("isc:thumb") as $thumbnail ) { print pq( $thumbnail )->text(); } Unfortunately this is doing nothing. If I try another element, like a tagname of id, the results pop up as expected.

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  • Resharper: how to force introducing new private fields at the bottom of the class?

    - by Igor Brejc
    Resharper offers a very useful introduce and initialize field xxx action when you specify a new parameter in a constructor like: Constructor (int parameter) The only (minor) nuisance is that it puts the new field at the beginning of the class - and I'm a fan of putting private parts as far away as possible from the prying eyes of strangers ;). If, however, you already have some private fields in the class, Resharper will put the new field "correctly" (note the quotes, I don't want to start a flame war over this issue) next to those, even if they are at the end of the class. Is there a way to force Resharper to always put new fields at the end of the class? UPDATE: OK, I forgot to mention I know about the "Type Members Layout in Options" feature, but some concrete help on how to modify the template to achieve fields placement would be nice.

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  • Weird <T> Activator Question.

    - by j-t-s
    Hello, I'm sorry, but a while ago I wrote a piece of code that was so nice. And now I'm trying to remember it for a new project. All I can remember about it is that it looked something like this: public static Create<T>() *something missing here* : *Something missing here* { // add methods etc here. I also think I remember something like " Activator.CreateInstance" being used. But I'm not sure. } Has anybody written code like this before? Basically what it did was it created a control and passed it back to another project. Thank you jt

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  • How can I draw a hollow rectangle using CreatePen?

    - by LarsTech
    Since using the DrawArc function in GDI+ isn't very accurate when drawing a small rounded rectangle, I am using RoundRect instead. Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) Dim hDC As IntPtr = e.Graphics.GetHdc Dim rc As New Rectangle(10, 10, 64, 24) Dim hPen As IntPtr = Win32.CreatePen(Win32.PenStyle.PS_SOLID, 0, _ ColorTranslator.ToWin32(Color.Green)) Dim hOldPen As IntPtr = Win32.SelectObject(hDC, hPen) Call Win32.RoundRect(hDC, rc.Left, rc.Top, rc.Right, rc.Bottom, 10, 10) Win32.SelectObject(hDC, hOldPen) Win32.DeleteObject(hPen) e.Graphics.ReleaseHdc(hDC) MyBase.OnPaint(e) End Sub This will draw a nice rounded rectangle, but it will also fill it with a white brush, erasing what I don't want to have erased. How can I draw this without erasing the inside of the rectangle?

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  • RFC Repository of programming RFC's with ability to direct-link sections or even lines?

    - by Lasse V. Karlsen
    Forgive me if this is the wrong place to ask this, I feel like the question is slightly off-topic even though it is also about programming. I am inputting todo-tasks for my WebDAV-project into my issue tracker, as I read through the relevant RFC's, and it would be nice to be able to add a link in my issue text directly to the relevant text, instead of just a link to the RFC file with a section number in the issue text, and then I have to use the find function to find it. For instance, a link like this: http://ieft.org/rfc2518.txt#1000 <-- line 1000 http://ieft.org/rfc2518.txt#9.8.3 <-- section 9.8.3 Neither of these two works, since they just post the full text files, so my question is this: Does anyone know of hosted versions of the RFC documents that contains such links?

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  • Universal syntax file format?

    - by Isaiah
    Hey as a project to improve my programing skills I've begun programing a nice code editor in python to teach myself project management, version control, and gui programming. I was wanting to utilize syntax files made for other programs so I could have a large collection already. I was wondering if there was any kind of universal syntax file format much in the same sense as .odt files. I heard of one once in a forum, it had a website, but I can't remember it now. If not I may just try to use gedit syntax files or geany. thanks

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  • Enter purchase order received quantity by code

    - by user733916
    In purchase order form - Line - Tab Quantity, there is Received, Delivery Reminder and Ordered. I want to be able to entry those field by X++ code, because currently our company still entry data into old system. I can retrieve the arrival purchase order goods data from that old system, then I want to entry those retrieved data by code into Axapta. What table and field should I consider when doing that? What functions available to easily update each PO lines received quantity? Sample Code is nice.

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