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  • Better way to write this Java code?

    - by Macha
    public void handleParsedCommand(String[] commandArr) { if(commandArr[0].equalsIgnoreCase("message")) { int target = Integer.parseInt(commandArr[1]); String message = commandArr[2]; MachatServer.sendMessage(target, this.conId, message); } else if(commandArr[0].equalsIgnoreCase("quit")) { // Tell the server to disconnect us. MachatServer.disconnect(conId); } else if(commandArr[0].equalsIgnoreCase("confirmconnect")) { // Blah blah and so on for another 10 types of command } else { try { out.write("Unknown: " + commandArr[0] + "\n"); } catch (IOException e) { System.out.println("Failed output warning of unknown command."); } } } I have this part of my server code for handling the types of messages. Each message contains the type in commandArr[0] and the parameters in the rest of commandArr[]. However, this current code, while working seems very unelegant. Is there a better way to handle it? (To the best of my knowledge, String values can't be used in switch statements, and even then, a switch statement would only be a small improvement.

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  • New to C/C++ Using Android NDK to port Legacy code, getting compile errors

    - by Donal Rafferty
    I have been trying to take some old Symbian C++ code over to Android today using the NDK. I have little to no C or C++ knowledge so its been a chore, however has to be done. My main issue is that I'm having trouble porting what I believe is Symbian specifi code to work using the small C/C++ subset that is available with the Android NDK. Here is a picture of the compilation errors I'm getting using cygwin I was wondering if anyone could point me in the right direction on how to deal with these errors? For instance is TBool/Int/TUint/RPointerArray/RSocket a Symbian primitive and thats why it wont compile or is it something else? Also what is ISO C++? Any tutorials, guides or tips and help would be greatly appreciated.

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  • Where is the probem in this code (javascript)?

    - by user318068
    Hi I have a problem in my code. can anybody help me ... <html> <body> <script type="text/javascript"> <?php $conn = mysql_connect("localhost","root"); mysql_select_db("tr", $conn); $q = mysql_query("SELECT message FROM messages WHERE to_viewed = '0' "); if (mysql_num_rows($q)) { require('pm.php'); ?> var answer = confirm("you have new message "); <?php } ?> if (answer) { window.location = "http:>>>/"; } else { } //--> </script> </body> </html> Thanks .... The error that appears in my code is that the confirm is not working if I open my page (no output)

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  • code duplication in sql case statements

    - by NS
    Hi I'm trying to output something like the following but am finding that there is a lot of code duplication going on. | australian_has_itch | kiwi_has_itch | | yes | no | | no | n/a | | n/a | no | ... My query looks like this with two case statements that do the same thing but flip the country (my real query has 5 of these case statements): SELECT CASE WHEN NOT EXISTS ( SELECT person_id FROM people_with_skin WHERE people_with_skin.person_id = people.person_id AND people.country = "Australia" ) THEN 'N/A' WHEN EXISTS ( SELECT person_id FROM itch_none_to_report WHERE people.country = "Australia" AND person_id = people.person_id ) THEN 'None to report' WHEN EXISTS ( SELECT person_id FROM itchy_people WHERE people.country = "Australia" AND person_id = people.person_id ) THEN 'Yes' ELSE 'No' END australian_has_itch, CASE WHEN NOT EXISTS ( SELECT person_id FROM people_with_skin WHERE people_with_skin.person_id = people.person_id AND people.country = "NZ" ) THEN 'N/A' WHEN EXISTS ( SELECT person_id FROM itch_none_to_report WHERE people.country = "NZ" AND person_id = people.person_id ) THEN 'None to report' WHEN EXISTS ( SELECT person_id FROM itchy_people WHERE people.country = "NZ" AND person_id = people.person_id ) THEN 'Yes' ELSE 'No' END kiwi_has_itch, FROM people Is there a way for me to condense this somehow and not have so much code duplication? Thanks!

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  • Good code architecture for this problem?

    - by RCIX
    I am developing a space shooter game with customizable ships. You can increase the strength of any number of properties of the ship via a pair of radar charts*. Internally, i represent each ship as a subclassed SpaceObject class, which holds a ShipInfo that describes various properties of that ship. I want to develop a relatively simple API that lets me feed in a block of relative strengths (from minimum to maximum of what the radar chart allows) for all of the ship properties (some of which are simplifications of the underlying actual set of properties) and get back a ShipInfo class i can give to a PlayerShip class (that is the object that is instantiated to be a player ship). I can develop the code to do the transformations between simplified and actual properties myself, but i would like some recommendations as to what sort of architecture to provide to minimize the pain of interacting with this translator code (i.e. no methods with 5+ arguments or somesuch other nonsense). Does anyone have any ideas? *=not actually implemented yet, but that's the plan.

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  • ASP.NET data bind two-way, bi-directional from code behind

    - by Konrad
    Hello, so for two-way (bi-directional) databinding in ASP, we do this... <asp:textbox id="txtField" runat="server" text='<%# Bind("SomeField") %>'> </asp:textbox> SomeField is located on the DataSource of the DetailsView that serves as the container for the textbox. Alternatively I could do this from code-behind (using the textbox's OnDataBinding event): protected void SomeField_OnDataBinding(object sender, EventArgs e) { ((TextBox)sender).Text = Eval("SomeField").ToString(); } However, EVAL is read-only...how can I specify Bind (two-way) from code-behind?

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  • Code to find nth largest number in an array

    - by user136104
    I have written following code in perl #!/usr/bin/perl @array = (3,6,8,1,2); my $second_largest = 0; my $largest = 0; for (@array) { if($_ > $largest) { $second_largest = $largest; $largest = $_; } if($_ > $second_largest && $_ < $largest) { $second_largest = $_; } } print "Second largest::".$second_largest; print "largest::".$largest; But I need a general code to find out "Nth" largest and smallest number of an array Please help me

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  • can this code be broken?

    - by user105165
    Consider the below html string <p>This is a paragraph tag</p> <font>This is a font tag</font> <div>This is a div tag</div> <span>This is a span tag</span> This string is processed to tokanize the text found in it and we get 2 results as below 1) Token Array : $tokenArray == array( 'This is a paragraph tag', 'This is a div tag', '<font>This is a font tag</font>', '<span>This is a span tag</span>' ); 2) Tokenized template : $templateString == "<p>{0}</p>{2}<div>{1}</div>{3}"; If you observe, the sequence of the text strings segments from the original HTML strings is different from the tokenized template The PHP code below is used to order the tokenized template and accordingly the token array to match the original html string class CreateTemplates { public static $tokenArray = array(); public static $tokenArrayNew = array(); function foo($templateString,$tokenArray) { CreateTemplates::$tokenArray = $tokenArray; $ptn = "/{[0-9]*}*/"; // Search Pattern from the template string $templateString = preg_replace_callback($ptn,array(&$this, 'callbackhandler') ,$templateString); // function call return $templateString; } // Function defination private static function callbackhandler($matches) { static $newArr = array(); static $cnt; $tokenArray = CreateTemplates::$tokenArray; array_push($newArr, $matches[0]); CreateTemplates::$tokenArrayNew[count($newArr)] = $tokenArray[substr($matches[0],1,(strlen($matches[0])-2))]; $cnt = count($newArr)-1; return '{'.$cnt.'}'; } // function ends } // class ends Final output is (ordered template and token array) $tokenArray == array('This is a paragraph tag', '<font>This is a font tag</font>', 'This is a div tag', '<span>This is a span tag</span>' ); $templateString == "<p>{0}</p>{1}<div>{2}</div>{3}"; Which is the expected result. Now, I am not confident whether this is the right way to achieve this. I want to see how this code can be broken or not. Under what conditions will this code break? (important) Is there any other way to achieve this? (less important)

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  • Algorithm to split an article without breaking the reading flow or HTML code

    - by Victor Stanciu
    Hello, I have a very large database of articles, of varying lengths. The articles have HTML elements in them. I have to insert some ads (simple <script> elements) in the body of each article when it is displayed (I know, I hate ads that interrupt my reading too). Now, the problem is that each ad must be inserted at about the same position in each article. The simplest solution is to simply split the article on a fixed number of characters (without breaking words), and insert the ad code. This, however, runs the risk of inserting the ad in the middle of a HTML tag. I could go the regex way, but I was thinking about the following solution, using JS: Establish a character count threshold. For example, "the add should be inserted at about 200 words" Set accepted deviations in each direction, say -20, +20 characters. Loop through each text node inside the article, and while doing so, keep count of the total number of characters so far Once the count exceeds the threshold, make the following decision: 4.1. If count exceeds the threshold by a value lower that the positive accepted deviation (for example, 17 characters), insert the ad code just after the current text node. 4.2. If the count is greater than the sum of the threshold and the deviation, roll back to the previous text node, and make the same decision, only this time use the previous count and check if it's lower than the difference between the threshold and the deviation, and if not, insert the ad between the current node and the previous one. 4.3. If the 4.1 and 4.2 fail (which means that the previous node reached a too low character count and the current node a too high one), insert the ad after whatever character count is needed inside the current element. I know it's convoluted, but it's the first thing out of my mind and it has the advantage that, by trying to insert the ad between text nodes, perhaps it will not break the flow of the article as bad as it would if I would just stick it in (like the final 4.3 case) Here is some pseudo-code I put together, I don't trust my english-explaining skills: threshold = 200 deviation = 20 current_count = 0 for each node in article_nodes { previous_count = current_count current_count = current_count + node.length if current_count < threshold { continue // next interation } if current_count > threshold + deviation { if previous_count < threshdold - deviation { // insert ad in current node } else { // insert ad between the current and previous nodes } } else { // insert ad after the current node } break; } Am I over-complicating stuff, or am I missing a simpler, more elegant solution?

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  • NSString stringWithContentsOfFile failing with what seems to be the wrong error code

    - by deanWombourne
    Hello. I'm trying to load a file into a string. Here is the code I'm using: NSError *error = nil; NSString *fullPath = [[NSBundle mainBundle] pathForResource:filename ofType:@"html"]; NSString *text = [NSString stringWithContentsOfFile:fullPath encoding:NSUTF8StringEncoding error:&error]; When passed in @"about" as the filename, it works absolutely fine, showing the code works. When passed in @"eula" as the filename, it fails with 'Cocoa error 258', which translates to NSFileReadInvalidFileNameError. However, if I swap the contents of the files over but keep the names the same, the other file fails proving there is nothing wrong with the filename, it's something to do with the content. The about file is fairly simple HTML but the eula file is a massive mess exported from Word by the legal department. Does anyone know of anything inside a HTML file that could cause this error to be raised? Much thanks, Sam

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  • Code snippets in interview

    - by Maddy
    Hi All, Recently I went to an interview for a C development position. Instead of asking me questions, they just gave me 20 code snippets to find out two logical errors on each one. I just couldn't complete all of the 20 since it took me time to go through each of these code snippets. My question is: Is this the right way to judge a candidate? If yes, how can I improve over my error detection skills so that I don't need to waste a lot of time in the next interview? If possible, please, suggest me some links where I could find lots of samples of such questions (mainly in C). Thanks and regards, Maddy

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  • Porting WebSphere code to get remote credentials to Tomcat

    - by Glenn Lawrence
    I have been asked to look into porting some code from a web app under IBM WAS 7 so that it will run under Tomcat 7. This is part of a larger SPNEGO/Kerberos SSO system but for purposes of discussion I have distilled the code down to the following that shows the dependencies on the two WebSphere classes AccessController and WSSubject: GSSCredential clientCreds = (GSSCredential) com.ibm.ws.security.util.AccessController.doPrivileged(new java.security.PrivilegedAction() { public Object run() { javax.security.auth.Subject subject = com.ibm.websphere.security.auth.WSSubject.getCallerSubject(); GSSCredential clientCreds = (GSSCredential) subject.getPrivateCredentials(GSSCredential.class).iterator().next(); return clientCreds; } }); I'd like to be able to do this in Tomcat.

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  • IntelliJ doesn't seem to pickup certain sbt libraries, no code completion

    - by Blankman
    I am using sbt console in my terminal to compile my scala/play project. I am using intellij to edit my source code, basically using it just for getting some code completion and navigation etc. For some reason certain libraries don't seem to load correctly. For example, I added elastic search to my Dependancies.scala file, reloaded sbt and everything compiles fine but for some reason IntelliJ doesn't pickup the jars correctly i.e. they are in red and there is no syntax completion. How can I fix this? I tried shutting intellij down and restarting it but the problem remains. I am using Intelli 13.1.3 (ultimate)

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  • Sharing code between sqlite-net and servicestack ormlite?

    - by lanks
    I am using sqlite-net to store data on my MonoDroid mobile application. I am wanting to sync this data with a server side service as well. Would it be possible to share the code for my Entity objects between sqlite-net and Servicestacks ormlite? The main difference between the two that I can see is declaring the "using namespace" statements at the top of the class for the object. Is it possible to detect the platform and set the using statements based on the platform? The other difference would be referencing the different dlls for servicestack so I suppose on the mobile app it would not compile if there are references to the servicestack namespaces... What would a good approach be to achieve sharing of this code?

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  • How to I correctly add brackets to this code

    - by Mohammad
    This code removes whites paces, (fyi: it's credited to be very fast) function wSpaceTrim(s){ var start = -1, end = s.length; while (s.charCodeAt(--end) < 33 ); //here while (s.charCodeAt(++start) < 33 ); //here also return s.slice( start, end + 1 ); } The while loops don't have brackets, how would i correctly add brackets to this code? while(iMean){ like this; } Thank you so much!

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  • Visual Studio 2008 profiler analysis - missing time

    - by Scott Vercuski
    I ran the Visual Studio 2008 profiler against my ASP.NET application and came up with the following result set. CURRENT FUNCTION TIME (msec) ---------------------------------------------------|-------------- Data.GetItem(params) | 10,158.12 ---------------------------------------------------|-------------- Functions that were called by Data.GetItem(params) TIME (msec) ---------------------------------------------------|-------------- Model.GetSubItem(params) | 0.83 Model.GetSubItem2(params) | 0.77 Model.GetSubItem3(params) | 0.76 etc. The issue I'm facing is that the sum of the Functions called by Data.GetItem(params) do not sum up to the 10,158.12 msec total. This would lead me to believe that the bulk of the time is actually spent executing the code within that method. My question is ... does Visual Studio provide a way to analyze the method itself so I can see which sections of code are taking the longest? if it does not are there any recommended tools to do this? or should I start writing my own timing scripts? Thank you

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  • Examples of ISO C++ code that is not valid C++/CLI

    - by Johannes Schaub - litb
    I've seen contradictory answers on the internet with regard to whether C++/CLI is a superset of C++ or not. The accepted answer on this question claims that "technically no", but doesn't provide an examples of non-C++/CLI code that conforms to ISO C++. Another answer on that question cites a book that says the opposite. So, can you please provide accurate answers with example code that fails on C++/CLI or cite a trusted source (MSDN for example) on this matter? I had someone this topic come up today and thought I would like to inform myself, but I didn't find any clear answer elsewhere!

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  • Unnecessary 'else' statement

    - by Vitalii Fedorenko
    As you know, in Eclipse you can turn on "Unnecessary 'else' statement" check that will trigger on if-then-else with premature return. And, from my experience, there are two most possible situations when use such statement: 1) Pre-check: if (validate(arg1)) { return false; } doLotOfStuff(); 2) Post-check: doLotOfStuff(); if (condition) { return foo; } else { return bar; } In the second case, if the trigger is on, Eclipse will suggest you to change the code to: doLotOfStuff(); if (condition) { return foo; } return bar; However, I think that the return with else statement is more readable as it is like direct mapping of business logic. So I am curios if this "Unnecessary 'else' statement" code convention is widespread or else statement is more preferable?

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  • PHP code cannot see query string param on return in Facebook oAuth flow

    - by TMC
    I am doing some integration with Facebook Open Graph using their oAuth flow and having issues with parsing query string parameters they return. On my callback URL, they pass back an "access_token" parameter with a hash (#). so the callback would be: http://mydomain.com/callback.php#access_token=foobar123 where foobar123 is my access token I'm trying to parse out. However, no matter what I do, my PHP code cannot see if and I've done every debug trick I know (even using phpinfo() to go through everything). The URL is stated only as http://mydomain.com/callback.php. It's as if the rest of the URL isn't really there! This code returns nothing: $token = $_REQUEST['access_token']; Any help would be greatly appreciated... I'm obviously missing something simple.

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  • Using code generated by Py++ as a Python extension

    - by gotgenes
    I have a need to wrap an existing C++ library for use in Python. After reading through this answer on choosing an appropriate method to wrap C++ for use in Python, I decided to go with Py++. I walked through the tutorial for Py++, using the tutorial files, and I got the expected output in generated.cpp, but I haven't figured out what to do in order to actually use the generated code as an extension I can import in Python. I'm sure I have to compile the code, now, but with what? Am I supposed to use bjam?

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  • Is this crufty?

    - by bobobobo
    I'm writing code like: class Game { int getMouseX() { return inputManager.getMouseX() ; } } ; I remember seeing code like this and hating it. One function passes off to another? What is this "pattern" (or, possibly, anti-pattern) called? I don't like it! On the other hand, it saves exposing the InputManager to the user of the class... would that be a better choice? Or should Game simply not contain InputManager? Edit What about using multiple inheritance instead? class Game : public InputManager, public Window { // by virtue of inheriting InputManager and Window, // Game now has "acquired" the capabilities of // InputManager's public functions, without requiring delegate. } ; Have I not found a reasonably good use for multiple inheritance??

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