Search Results

Search found 18249 results on 730 pages for 'real world haskell'.

Page 308/730 | < Previous Page | 304 305 306 307 308 309 310 311 312 313 314 315  | Next Page >

  • Scala: "using" keyword

    - by Albert Cenkier
    i've defined 'using' keyword as following: def using[A, B <: {def close(): Unit}] (closeable: B) (f: B => A): A = try { f(closeable) } finally { closeable.close() } i can use it like that: using(new PrintWriter("sample.txt")){ out => out.println("hellow world!") } now i'm curious how to define 'using' keyword to take any number of parameters, and be able to access them separately: using(new BufferedReader(new FileReader("in.txt")), new PrintWriter("out.txt")){ (in, out) => out.println(in.readLIne) }

    Read the article

  • DB2 - How to run an ad hoc select query with a parameter in IBM System i Access for Windows GUI Tool

    - by KenB
    I would like to run some ad hoc select statements in the IBM System I Navigator tool for DB2 using a variable that I declare. For example, in the SQL Server world I would easily do this in the SQL Server Management Studio query window like so: DECLARE @VariableName varchar(50); SET @VariableName = 'blah blah'; select * from TableName where Column = @VariableName; How can I do something similar in the IBM System I Navigator tool?

    Read the article

  • String comparison in Numpy

    - by Morgoth
    In the following example In [8]: import numpy as np In [9]: strings = np.array(['hello ', 'world '], dtype='|S10') In [10]: strings == 'hello' Out[10]: array([False, False], dtype=bool) The comparison fails because of the whitespace. Is there a Numpy built-in function that does the equivalent of In [12]: np.array([x.strip()=='hello' for x in strings]) Out[12]: array([ True, False], dtype=bool) which does give the correct result?

    Read the article

  • How to have Moose return a child class instance instead of its own class, for polymorphism

    - by alex8657
    I want to create a generic class, whose builder would not return an instance of this generic class, but an instance of a dedicated children class. As Moose does automatic object building, i do not get to understand if this something possible, and how to create a Moose class with Moose syntax and having this behaviour Eg: The user asks: $file = Repository-new(uri='sftp://blabla') .... and is returned an Repository::_Sftp instance User would use $file as if it is a Repository instance, without the need to know the real subclass (polymorphism)

    Read the article

  • Keyboard Controls ?

    - by Asim Sajjad
    Hello World I am creating a financial software working on a touch panel machine. I have created a Keyboard control for User Input. I want to open start menu on my keyboard's Window button click. Please tell me hows that possible... Its very urgent

    Read the article

  • Nested Functions in C - Best Practices

    - by Justin Ethier
    I just realized a function may be defined inside another function in C: void main(){ int foo(){ return 2; }; printf("%d\n", foo()); } Besides being a neat trick, the useful thing about this is that the inner function is private to the outer function. But... is that a good enough reason to do this in a "real-world" application? What are the best practices for using this syntax?

    Read the article

  • WPF treeview with rounded corners

    - by BrettRobi
    I have a treeview in a UI full of rounded corners, so I'd like the treeview to match. Is it possible in xaml to change the border of a treeview to have rounded corners? I've thought about hiding the border and putting the treeview inside a rounded rectangle, but this loses real-estate and seems in-elegant. Any ideas?

    Read the article

  • imagick showing script url instead of image

    - by Raz
    Hi, currently i'm trying to use imagick to generate some images without saving them on the server and then outputting to the browser, my method of choice was image magic with the imagick extension for php. I read the documentation, and i'm sure the package is installed on my machine (windows xp, with xampp). the class is installed imagick module enabled imagick module version 2.0.0-alpha imagick classes Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator ImageMagick version ImageMagick 6.3.3 04/21/07 Q16 http://www.imagemagick.org ImageMagick release date 04/21/07 ImageMagick Number of supported formats: 164 ImageMagick Supported formats A, ART, AVI, AVS, B, BIE, BMP, BMP2, BMP3, C, CACHE, CAPTION, CIN, CIP, CLIP, CLIPBOARD, CMYK, CMYKA, CUR, CUT, DCM, DCX, DFONT, DPS, DPX, EMF, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, FAX, FITS, FRACTAL, FTS, G, G3, GIF, GIF87, GRADIENT, GRAY, HISTOGRAM, HTM, HTML, ICB, ICO, ICON, INFO, JBG, JBIG, JNG, JP2, JPC, JPEG, JPG, JPX, K, LABEL, M, M2V, MAP, MAT, MATTE, MIFF, MNG, MONO, MPC, MPEG, MPG, MSL, MSVG, MTV, MVG, NULL, O, OTB, OTF, PAL, PALM, PAM, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PFA, PFB, PGM, PGX, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG24, PNG32, PNG8, PNM, PPM, PREVIEW, PS, PS2, PS3, PSD, PTIF, PWP, R, RAS, RGB, RGBA, RGBO, RLA, RLE, SCR, SCT, SFW, SGI, SHTML, STEGANO, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TILE, TIM, TTC, TTF, TXT, UIL, UYVY, VDA, VICAR, VID, VIFF, VST, WBMP, WMF, WMFWIN32, WMZ, WPG, X, XBM, XC, XCF, XPM, XV, XWD, Y, YCbCr, YCbCrA, YUV this is from the phpinfo so i know i have it installed, the thing is when i try to generate an image and save it, it works flawlessly, but when i try to output the image directly, i get the script url as an image $draw = new ImagickDraw(); $draw->setFont('AnkeCalligraph.TTF'); $draw->setFontSize(52); $draw->annotation(110, 110, "Hello World!"); $draw->annotation(50, 220, "Hello World!"); $canvas = new Imagick('./pictures/test_live.PNG'); $canvas->drawImage($draw); $canvas->setImageFormat('png'); header("Content-Type: image/png"); echo $canvas; this is the code used. if i use writeimage, then the file on the server is created with no problems. does anyone have any ideas what i'm doing wrong ?

    Read the article

  • Disable script debugging in IWebBrowser2 OLE control? C++

    - by flyout
    I have a IWebBrowser2 I use to visit some webpages with .Navigate() When the page has a js error I got a warning box for "Syntax error", so I used .put_Silent(TRUE). And now I get a warning for "VS Just-In-Time Debugger: Unhandled exception" instead How can I disable all the script error warnings (including JIT debugger) from my code (i mean without modifying the real IE settings)?

    Read the article

  • audio processing in iPhone

    - by Janaka
    I am writing an iPhone application to apply filters to audio input and output the result in real time. I am new to audio processing but using audiounit, the correct approach? I found out how to output data using audiounit but couldn’t figure out how to capture input audio. Is there a sample application showing how to connect input and output using audiounit?

    Read the article

  • What are the benefits of using Boost.Phoenix?

    - by Denis Shevchenko
    Hello all! I can not understand what the real benefits of using Boost.Phoenix. When I use it with Boost.Spirit grammars, it's really useful: double_[ boost::phoenix::push_back( boost::phoenix::ref( v ), _1 ) ] When I use it for lambda functions, it's also useful and elegant: boost::range::for_each( my_string, if_ ( '\\' == arg1 ) [ arg1 = '/' ] ); But what are the benefits of everything else in this library? The documentation says: "Functors everywhere". I don't understand what is the good of it?

    Read the article

  • a simple regexp

    - by Delirium tremens
    The regexp has to remove ,id or id, in read and unread. GM_setValue('unreadids', (unreadids == '') ? '' : unreadids.replace(new RegExp('('+id+',)|(,'+id+')', 'i'), '')); GM_setValue('readids', (readids == '') ? '' : readids.replace(new RegExp('('+id+',)|(,'+id+')', 'i'), '')); It works in Rx Toolkit, not in real life. Why?

    Read the article

  • HtAccess Rewrite Needed

    - by pws5068
    My host will not allow me to change the default folder of my primary domain. I have managed to Rewrite http://www.mysite.com to the real folder public_html/mysite.com/www/ with the following code: RewriteEngine On RewriteRule ^$ /mysite.com/www/ [R=301,L] This does successfully load my domain from the subfolder, but the url becomes: http://mysite.com/mysite.com/www/ How can I continue loading requests from http://mysite.com/index.html in the correct folder shown above, without showing it in the client-side url?

    Read the article

  • Abstraction is for lame programmers ? [closed]

    - by Zaban Khuli
    Hi, there's this senior developer in my company who's (in his own opinion) a pretty good C programmer. I happen to be from functional background (ML, to be specific) and so for me composition and abstraction are the two basic elements of programming. But this MrSmartyPants has got some kind of superiority complex and he'd always argue with me that abstraction is for lame programmers and _real_ programmers do not need it. Is it a problem with this guy or all C programmers have this opinion that abstraction is for lame programmers?

    Read the article

  • What does it call in GWT to make 2 UI consistent?

    - by DucDigital
    I saw a video of Google I/O and found an example of GWT UI being very consistent between clients. Which you can save, add, drag and drop in almost real time between clients. I currently don't understand the basic of this (In GWT, i think it implement Comet), so is there anyone can give me a term or definition for this? so I can get it on Google for more information? Thank you very much

    Read the article

  • Is it possible to port a Windows RT app to a Windows Phone app?

    - by balint
    Just recently released an application to the Windows Store, and I'm wondering if it is possible to "downgrade" it to Windows Phone 7.1 - until Windows Phone 8 will arrive. The real problem is with the async stuff, I've found the "Async Targeting Pack", but it requires Visual Studio 2012; however VS2012 doesn't work with the Phone SDK 7.0, 7.1. I'm not in the mood to install old and ugly Visual Studio 2010 on my brand new Windows 8 machine :) Does anyone know a workaround?

    Read the article

  • Nonblocking texture upload on iPhone and other OpenGL ES platforms

    - by spurserh
    Hello, I am doing some work which involves drawing video frames in real time in OpenGL ES. Right now I am using glTexImage2D to transfer the data, in the absence of Pixel Buffer Objects and the like. A below answer suggests that glTexImage2D is always blocking, even if texture object referenced does is not used for any drawing. Is there a way to do a nonblocking texture upload with OpenGL ES (any version)? Thank you very much, Sean

    Read the article

  • Retro video games programming

    - by SebKom
    I just watched the Super Mario Bros. -1 World glitch in youtube and I really began wondering about the code behind those games. Which language was used? What about the OS for the video games consoles? Are there any website with resources about this subject? (I am a 90s video gamer so I am particularly interested about the programming behind those games but feel free to make this a wiki and include links to resources about video games programming in general, if you want)

    Read the article

  • A good resource for an overview of web technologies

    - by Vijay
    Hello Every one, I have been working on microsoft based web technologies (.net, sql server, iis) for about an year and would like to know the opensource alternatives for the above. I have heard of LAMP, Java based technologies, ruby on rails etc. Can you please point me to a place where I can find more information about these and how they match up against each other. Basically I am looking for an overview of the popular web technologies in today's world. Thanks a lot. Vijay

    Read the article

  • Problem retrieving HTML5 video duration

    - by drebabels
    UPDATE: Ok so although I haven't solved this problem exactly, but I did figure out a work around that handles my biggest concern... the user experience. First the video doesn't begin loading until after the viewer hits the play button, so I am assuming that the duration information wasn't available to be pulled (I don't know how to fix this particular issue... although I assume that it would involve just loading the video metadata separately from the video, but I don't even know if that is possible). So to get around the fact that there is no duration data, I decided to hide the duration info (and actually the entire control) completely until you hit play. I know... its cheating. But for now it makes me happy :) That said... if anyone knows how to load the video metadata separately from the video file... please share. I think that should completely solve this problem. I am working on building a HTML5 video player with a custom interface, but I am having some problems getting the video duration information to display. My HTML is real simple (see below) <video id="video" poster="image.jpg" controls> <source src="video_path.mp4" type="video/mp4" /> <source src="video_path.ogv" type="video/ogg" /> </video> <ul class="controls"> <li class="time"><p><span id="timer">0</span> of <span id="duration">0</span></p></li> </ul> And the javascript I am using to get and insert the duration is var duration = $('#duration').get(0); var vid_duration = Math.round(video.duration); duration.firstChild.nodeValue = vid_duration; The problem is nothing happens. I know the video file has the duration data because if I just use the default controls, it displays fine. But the real strange thing is if I put alert(duration) in my code like so alert(duration); var vid_duration = Math.round(video.duration); duration.firstChild.nodeValue = vid_duration; then is works fine (minus the annoying alert that pops up). Any ideas what is happening here or how I can fix it?

    Read the article

  • Database performance benchmark

    - by pablo
    Any good articles out there comparing Oracle vs SQL Server vs MySql in terms of performance? I'd like to know things like: INSERT performance SELECT performance Scalability under heavy load Based on some real examples in order to gain a better understanding about the different RDBMS.

    Read the article

  • OPENSSL_add_all_algorithms_noconf could not be located

    - by Fedrick
    Hi all, I am getting an error when I go to start my world. it says that " The procedure entry point OPENSSL_add_all_algorithms_noconf could not be located in the dynamic link library libeay32.dll".I have tried re loading the whole thing, just downloading the dll file, downloading a dll file form the internet but nothing fixes it. Anyone got a suggestion? Thanks in Advance

    Read the article

< Previous Page | 304 305 306 307 308 309 310 311 312 313 314 315  | Next Page >