Search Results

Search found 9727 results on 390 pages for 'general concepts'.

Page 246/390 | < Previous Page | 242 243 244 245 246 247 248 249 250 251 252 253  | Next Page >

• TeX on iPad compatible with Apple's policy?

  - by Yuji

  Hi, As a nerd, I think it would be nice to have a TeX editor on the iPad. But TeX is a Turing-complete language, and it is arguably a general-purpose compiler/interpreter. Does that make it unacceptable to the App Store? Furthermore, if somebody ports TeX compiler to javascript and runs inside WebKit, does it make acceptable to the App Store? FYI, here's the section of the developer's agreement: 3.3.2 An Application may not itself install or launch other executable code by any means, including without limitation through the use of a plug-in architecture, calling other frameworks, other APIs or otherwise. No interpreted code may be downloaded and used in an Application except for code that is interpreted and run by Apple's Published APIs and builtin interpreter(s).

  Read the article

• Variable 'app' in url-pattern for servlet mapping

  - by Brian

  I'm learning Spring MVC (and servlets in general) and following springsource's mvc-ajax example, which uses annotated controller methods. It appears that there is only one url-pattern (in web.xml) mapped to a servlet in that example: /app/* I've deployed the app as a WAR file, and the actual, ugly URL I'm requesting is http://127.0.0.1:8080/org.springframework.samples.mvc.ajax-1.0.0-20100407.233245-1/account. So, it appears that 'app' in '/app/*' is a variable corresponding to 'org.springframework.samples.mvc.ajax-1.0.0-20100407.233245-1', however, it isn't universal because it isn't usable in my own app, and it contradicts my understanding that url-pattern contains the portion of the URL after the app name. So, what is 'app'? Where is it configured?

  Read the article

• Generic Text Only printer driver mangles control codes

  - by Terry

  If an escape character (or most other characters < 0x20) is sent to the generic / text only printer it gets printed as a period. Using the code in the WinDDK is it possible to 'correct' this behaviour so that it passes it through unmodified? The general scenario for this is that some application ('user app') outputs a document to a windows printer. My application requires this data in plain text form and so what I do is run a generic / text only printer that talks to a virtual com port. This generally works fine except where the 'user app' outputs binary data to the print queue without using the correct mechanism (which seems to work fine on some printer drivers, such as the Epson POS ones, but not the generic / text only one). I've tried changing the print processor selection without success and also tried looking at the gtt files to see if I could readily map in these characters as though they were printable, but the minidriver tool won't let me do that. Any suggestions?

  Read the article

• Appscript to write iTunes artwork

  - by Kartik Aiyer

  I'm trying to capture artwork from a pict file and embed into a track on iTunes using python appscript. I did something like this: imFile = open('/Users/kartikaiyer/temp.pict','r') data = imFile.read() it = app('iTunes') sel = it.current_track.get() sel.artworks[0].data_.set(data[513:]) I get an error OSERROR: -1731 MESSAGE: Unknown object Similar applescript code looks like this: tell application "iTunes" set the_artwork to read (POSIX file "/Users/kartikaiyer/temp.pict") from 513 as picture set data of artwork 1 of current track to the_artwork end tell I tried using ASTranslate but it never instantiates 'the_artwork' and then throws an error when there is a reference to the_artwork. Can anyone help. I'm new to appscript and python in general.

  Read the article

• Which is the best PDF library for PHP?

  - by Darryl Hein

  I'm wondering which is the best PDF creation library for PHP, mainly for creating PDFs from scratch (not as much HTML to PDF)? I have worked with FPDF for quite a while now, but it's getting quite old and hasn't had much for updates. I found TCPDF the other day (thanks you another question on SO). It seems very good and is based on FPDF so I don't think it'd be a big transition. FPDI also supports TCPDF which is nice as I have used it before and found it be useful. I have also seen DOMPDF but it too hasn't had many updates for quite some time and is lacking a lot of functionality for general PDF generation. Zend (Zend_Pdf) as well as many other libraries have their own PDF libraries or extend another one, but you often have to setup the entire library, which for existing projects can be a problem. What other libraries are there and what have your experiences with them been with the above or other libraries?

  Read the article

• How to create templates in JSTL JSP

  - by desau

  Say I have a JSP page with JSTL. I'm using c:forEach and looping over 5 different sets of objects, each very similar. Each loop is nearly identical.. lots of duplicated code. I'd like to make that loop a template -- such as a JSP template, but I want to pass the JSTL object(s) in the parameters. How can I do this? Or a more general question -- how can I create reusable HTML templates in JSP/JSTL?

  Read the article

• Special characters in PHP / MySQL

  - by Jonathan

  Hi, I have in the database words that include special character (in Spanish mostly, like tildes). In the database everything is saved and shown correctly with PHPmyAdmin, but when I get the data (using PHP) and display it in a browser, I get a weird character, like a "?" with a square... I need a general fix so I don't need to escape each character every time, and also I would be able to insert special Spanish characters from a PHP form into the database... The HTML is correct: <meta http-equiv="content-type" content="text/html; charset=utf-8" /> All tables and databas are set to utf8_spanish The character I get: ? Any suggestions??? Thanks!!!

  Read the article

• Is there a way to undo Mocha stubbing of any_instance in Test::Unit

  - by Craig Walker

  Much like this question, I too am using Ryan Bates's nifty_scaffold. It has the desirable aspect of using Mocha's any_instance method to force an "invalid" state in model objects buried behind the controller. Unlike the question I linked to, I'm not using RSpec, but Test::Unit. That means that the two RSpec-centric solutions there won't work for me. Is there a general (ie: works with Test::Unit) way to remove the any_instance stubbing? I believe that it's causing a bug in my tests, and I'd like to verify that.

  Read the article

• Are there any widespread, modern Java coding conventions?

  - by brianegge

  Sun's "Code Conventions for the Java Programming Language" was last updated April 1999. Ten years later a lot has changed in the language, as well as general usage patterns. Are there more up to date, widely adopted standards? Most guidelines omit specifying file encoding and line endings. Sun recommends mixed tabs and spaces. The Eclipse IDE defaults to Eclipse's standard, which is tabs only. The Maven style guide is spaces only. Many style guides, such as JBoss, follow Sun's guidelines, but prefer K&R braces instead of OTBS. Each Apache project has it's own style guide, with slight differences between each one.

  Read the article

• 'Programming by Coincidence' Excercise: Java File Writer

  - by Tapas

  I just read the article Programming by Coincidence. At the end of the page there are excercises. A few code fragments that are cases of "programming by coincidence". But I cant figure out the error in this piece: This code comes from a general-purpose Java tracing suite. The function writes a string to a log file. It passes its unit test, but fails when one of the Web developers uses it. What coincidence does it rely on? public static void debug(String s) throws IOException { FileWriter fw = new FileWriter("debug.log", true); fw.write(s); fw.flush(); fw.close(); } What is wrong about this?

  Read the article

• Multidimensional vectors in scheme?

  - by incrediman

  I earlier asked a question about arrays in scheme (turns out they're called vectors but are basically otherwise the same as you'd expect). Is there an easy way to do multidimensional arrays vectors in PLT Scheme though? For my purposes I'd like to have a procedure called make-multid-vector or something. By the way if this doesn't already exist, I don't need a full code example of how to implement it. If I have to roll this myself I'd appreciate some general direction though. The way I'd probably do it is to just iterate through each element of the currently highest dimension of the vector to add another dimension, but I can see that being a bit ugly using scheme's recursive setup. Also, this seems like something I should have been able to find myself so please know that I did actually google it and nothing came up.

  Read the article

• Following PHP coding of Wisdom

  - by justjoe

  i read some wisdom like this : Programmers are encouraged to be careful when using by-reference variables since they can negatively affect the readability and maintainability of the code. i make my own solution, such as give suffix such as _ref in every by-reference variables. so, if i have a variable named as $files_in_root, then i will add suffix and changes it name into $files_in_root_ref. As far my knowledge goes, this is a good solution. So, here come the question Is there any best-practice on choosing suffix for by-reference variable in PHP coder world ? Or do you have any ? In general, how do we sustain readability and maintainability on PHP project with more then 3000 line of code ? I hope PHP coder world has unwritten aggrement for first question, cause it will help spot a pattern on any source code.

  Read the article

• Toggle visibility of DIV based on Dropdown

  - by user1869787

  I have never used Javascript before, only HTML and CSS. I am attempting to have my information show only when selected from my drop down. I don't know any Javascript so any help would be overly appreciated. This is my html so far: <!DOCTYPE HTML> <html> <head> <meta charset="utf-8" /> <title>Gone Fishin'</title> <link href="finale.css" rel="stylesheet" type="text/css"> </head> <div id="wrapper"> <div id="nav"> <ul> <li><a href="Index.html">About Us</a></li> <li><a href="Species.html">List by Species</a></li> <li><a href="County.html">List by County</a></li> <li><a href="apply.html">Reservations</a></li> </ul> </div> <body> <div id="content"> <p>ontent</p> <fieldset> <legend>Choose your Target</legend> <select name="option" id="options"> <option value=""></option> <option value="1">American Shad</option> <option value="2">Black Crappie</option> <option value="3">Bluegill</option> <option value="4">Brook Trout</option> <option value="5">Brown Trout</option> <option value="6">Carp</option> <option value="7">Chain Pickerel</option> <option value="8">Channel Catfish</option> <option value="9">Flathead Catfish</option> <option value="10">Largemouth Bass</option> <option value="11">Muskellunge</option> <option value="12">Norhtern Pike</option> <option value="13">Pumkpinseed</option> <option value="14">Rainbow Trout</option> <option value="15">Readbreast Sunfish</option> <option value="16">Rock Bass</option> <option value="17">Sauger</option> <option value="18">Saugeye</option> <option value="19">Smallmouth Bass</option> <option value="20">Steelhead</option> <option value="21">Striped Bass</option> <option value="22">Walleye</option> <option value="23">White Bass</option> <option value="24">White Crappie</option> <option value="25">White Perch</option> <option value="26">Yellow Perch</option> </select> <div id="option"> <div id="1" style="display: block">Test 1</div> <div id="2">Test 2</div> <div id="3">Test 3</div> <div id="4">Test 4</div> <div id="5">Test 5</div> </div> </fieldset> </div> </body> </div> </html> And this is my CSS: @charset "utf-8"; /* CSS Document */ /*General Styles*/ * {font-family:Verdana, Geneva, sans-serif;} #wrapper {width:85%; margin:auto; background-color:#00CC00;} /*End of General Styles*/ /* nav div styles */ #nav {background-color:#FF0000; text-align:center;} #nav ul li {display:inline-block; background-color: #67e667; border:5px dashed; width: 90px text-align:center;} #nav ul li a:link {background-color:#a60000; width: 90px;} #nav ul li a:visited {background-color: #009999;} #nav ul li a:hover {background-color: #a64b00;} /* end nav styles */ /* content div styles*/ #content {padding: 5px;} #option {display:none;} /*end content styles*/ /*start form styles*/ fieldset {background-color:#ff7400; color:white} label {display:inline-block; width: 150px; float:left; margin-right: 3px;} #form li{margin-bottom:10px;} #dtg li{margin-bottom:5px;} Thank you for any help received

  Read the article

• Is perl's each function worth using?

  - by eugene y

  From perldoc -f each we read: There is a single iterator for each hash, shared by all each, keys, and values function calls in the program; it can be reset by reading all the elements from the hash, or by evaluating keys HASH or values HASH. The iterator is not reset when you leave the scope containing the each(), and this can lead to bugs: my %h = map { $_, 1 } qw(1 2 3); while (my $k = each %h) { print "1: $k\n"; last } while (my $k = each %h) { print "2: $k\n" } Output: 1: 1 2: 3 2: 2 What are the common workarounds for this behavior? And is it worth using each in general?

  Read the article

• Is perl's each function worth using?

  - by eugene y

  From perldoc -f each we read: There is a single iterator for each hash, shared by all each, keys, and values function calls in the program; it can be reset by reading all the elements from the hash, or by evaluating keys HASH or values HASH. The iterator is not reset when you leave the scope containing the each(), and this can lead to bugs: my %h = map { $_, 1 } qw(1 2 3); while (my $k = each %h) { print "1: $k\n"; last } while (my $k = each %h) { print "2: $k\n" } Output: 1: 1 2: 3 2: 2 What are the common workarounds for this behavior? And is it worth using each in general?

  Read the article

• WPF exception handling when launched from WinForms

  - by Sonic Soul

  so i came across this interesting article on WPF exception handling: http://srtsolutions.com/public/item/251263 it works by declaring DispatcherUnhandledException handler in xaml <application> node. but what if a WPF window is launched from win forms application? where can i declare a general exception handler? The problem is that when WPF crashes, it brings down the whole WinForms app with it. *Edit what if instead of launching the WPF window directly, i launched an "Application" which than defined a start window?? is that possible/advisable?

  Read the article

• Stuck at "Hello World" with IntelliJ IDEA 9.0.1 for Scala

  - by Alex R

  I've been using Eclipse since 2.x and and IDEs in general for over 20 years (since Turbo Pascal and Turbo C in the late '80s!). (that preamble is supposed to imply, "I'm not an idiot" ... LOL :-] ) I'm trying to use the debugger in IntelliJ 9.0.1. I've resigned myself to an old standby: class hello { def main(a: Array[String]) = println("got args: " + a) } Alas, I'm unable to get even this simple Scala example to run. I'd like to eventually put a breakpoint in it, but for now just running it would be great. I have Java 1.6u20 and the Scala plug-in 0.3.473 (January 2010). The error below summarizes my experience: What possibly could I be doing wrong? Thanks

  Read the article

• How to exercise and feel well when programming?

  - by Filip Ekberg

  While I'm sitting here in my expensive chair which was told to me were gonna help me with my neck and shoulder pains; it didn't. So don't go spend $2,000 on a chair because it's not gonna help. I am trying everything to keep my body in shape, exercising to keep my pizza-body slim and just to feel well in general. What I'd like to do is take a couple of seconds, maybe when the code compiles, to reach up, do a couple of X and feel good. But, what is this X? When I sit there at work, what will everyone think when I stand up and start to hula hula because I want to exercise my basin? I know a lot of programmers out there do have pain so let's come up with a little list together to help us all keep our joints feeling good. Programming gives me joint pain, how do i avoid it without quitting programming?

  Read the article

• DLL export of a static function

  - by Begbie00

  Hi all - I have the following static function: static inline HandVal StdDeck_StdRules_EVAL_N( StdDeck_CardMask cards, int n_cards ) Can I export this function in a DLL? If so, how? Thanks, Mike Background information: I'm doing this because the original source code came with a VS project designed to compile as a static (.lib) library. In order to use ctypes/Python, I'm converting the project to a DLL. I started a VS project as a DLL and imported the original source code. The project builds into a DLL, but none of the functions (including functions such as the one listed above) are exported (as confirmed by both the absence of dllexport in the source code and tools such as DLL Export Viewer). I tried to follow the general advice here (create an exportable wrapper function within the header) to no avail...functions still don't appear to be exported.

  Read the article

• Emulating HTTP POST via httpclient 3.x for multi options

  - by Frankie Ribery

  I want to emulate a HTTP POST using application/x-www-form-urlencoded encoding to send a option group that allows multiple selections. <select name="groups" multiple="multiple" size="4"> <option value="2">Administration</option> <option value="1">General</option> </select> Does adding 2 NameValuePairs (NVP) with the same name work ? My serverside log shows that only the first NVP was received. e.g PostMethod method = ...; NameValuePair[] nvpairs = { new NameValuePair( "groups", "2" ); new NameValuePair( "groups", "1" ); }; method.addParameter( nvpairs ); Only the groups=1 parameter was received. Thanks

  Read the article

• extracting secrets from an embedded chip

  - by Will

  I am looking at an embedded system where secrets are stored in flash that is internal to the chip package, and there is no physical interface to get that information out - all access to this flash is policed by program code. All DMA attacks and JTAG and such are disabled. This seems to be a common locked-down configuration for system-on-a-chip. How might an attacker recover the secrets in that Flash? I understand they can fuzz for vulnerabilities in the app code and exploit it, that there could be some indistinct general side channel attack or something. But how would an attacker really go about trying to recover those keys? Are there viable approaches for a determined attacker to somehow shave-down the chip or some kind of microscope attack?

  Read the article

• Howto allow "Illegal characters in path" ?

  - by hbruce

  I have a MVC.NET application with one route as follows: routes.MapRoute("member", "member/{id}/{*name}", new { controller = "member", action = "Details", id = "" }, new { id = @"\d+" }); Thus, a link could be something like this: http://domain/member/123/any_kind_of_username This works fine in general but if the path contains illegal characters (e.g. a double qoute: http://domain/member/123/my_"user"_name) I get a "System.ArgumentException: Illegal characters in path." After much googling the best suggestions seems to be to make sure that the url doesn't contain any such characters. Unfortunately, that is out of my control in this case. Is there a way to work around this?

  Read the article

• Programming tests: are they relevant?

  - by BlackVoid

  Do online programming tests have any value (except for providing an evidence to potential employers) in terms of evaluating your knowledge, or a they too broad or too narrow in general? For examples, brainbench.com and similar websites. From my experience I have never found myself scoring particularly high, although I have many years of commercial experience and is doing great at work. These tests mostly refer to things I have never worked with (WebForms or ADO .Net, who works with ADO .Net directly anyway?), yet these tests claim to be C# tests. If you were hiring a programmer, would you consider online tests as an evidence of real skill?

  Read the article

• How to start recognizing design patterns as you are programming?

  - by Jon Erickson

  I have general academic knowledge of the various design patterns that are discussed in GoF and Head First Design Patterns, but I have a difficult time applying them to the code that I am writing. A goal for me this year is to be able to recognize design patterns that are emerging from the code that I write. Obviously this comes with experience (I have about 2 years in the field), but my question is how can I jumpstart my ability to recognize design patterns as I am coding, maybe a suggestion as to what patterns are easiest to start applying in client-server applications (in my case mainly c# webforms with ms sql db's, but this could definitely be language agnostic).

  Read the article

• What to name a method

  - by coffeeaddict

  I'm debating what to name this method. CloseCashTransaction(Cash.Id, -1, true); or CompleteCyberCashTransaction(Cash.Id, -1, true); or neither are good? In business terms/process by sending in these 3 values I'm essentially "closing the transaction" or "completing the transaction" in our workflow. However on the developer side, I cant' infer wtf "Complete" or "Close" means. It forces me to look into the internals of the method. My struggle is that I try to name methods to infer what they are doing. Complete is just way too general and forces the consumer of the method to dive into the code every time I use words like this. When I see stuff like this all over code, I have to take so much time to figure out what they are actually doing. And if the comments suck, I end up having to look at all logic in that method because the comments nor the method name really infer what's going on.

  Read the article

< Previous Page | 242 243 244 245 246 247 248 249 250 251 252 253  | Next Page >