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  • Implement an FTP server (no threads) - how to start?

    - by ironicaldiction
    As a semester project, I have the following specification: Write a simple single threaded ftp server. The ftp server is configurable from a configuration file. The config allows to set the interface (where the server listens), the roots of the served content, transfer log, and database of users and its passwords. The server allows to create a virtual filesystem. By a virtual filesystem, we mean a mapping of a served directory to the real directory on the filesystem. For example, the client tree will look like: /home/user1 maps to /mnt/x/home/user1 /www maps to /var/cache/www /home/user_list.txt maps to /var/ftpclient/user_list.txt The user will see /home/user1 directory and /www directory and the file /home/user_list.txt The course is in C++. The projects to this point have provided a lot of structure, such as a class header file to get you started on the program. My question is this: how can I get started on what seems like quite a massive project (I have 3 weeks to return a working implementation)?

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  • Ubuntu 12.10 doesn't boot (installed with wubi)

    - by Luna Kiyiya
    Quick and simple, my ubuntu doesn't want to load after installing with ubuntu. Starting the computer, at the screen to choose your operative system, first shows an error that windows failed to start, and later asks me to choose between ubuntu and windows. If I choose ubuntu, the same error happens again and I return to the same screen. If I choose windows, windows just starts normally as it was doing before I installed it. How can I solve this?? Thank you for your attention... I really need some help :)

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  • How to access variables of uninitialized class?

    - by oringe
    So I've gone with a somewhat singleton approach to my game class: #include "myGame.h" int main () { myGame game; return game.Execute(); } But now I need to define a class that accesses variables in the instance of myGame. class MotionState { public: virtual void setWorldTransform (...) { VariableFromMyGameClass++; //<-- !? ...} }; I'm trying to integrate this class into my project from an example that just uses globals. How can I access variables of myGame class in the definition of new classes? Should I give up on my singleton approach?

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  • Save the Date: Oracle Partner Day Sweden, January 2013

    - by A&C Redaktion
    Welcome to the new edition of the EMEA Oracle Partner Days for FY13. Staged at locations throughout most of the EMEA countries, these events will deliver to you real Business return on your OPN membership. You will hear the business opportunities coming from the adoption of the entire Oracle stack, the latest products value propositions and related sales strategy and be able to connect directly with Oracle executives and find new business opportunities with other partners in your region. Mark your calender and register today for our first Partner Day in the Nordics region on January 30th in Stockholm, Sweden. Click here for the agenda & registration page (in Swedish). The calendar of all upcoming Partner Days you will find here.

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  • Bitmap & Object Collision Help

    - by MarkEz
    Is it possible to detect when an object and a bitmap collide. I have an arraylist of sprites that I am shooting with an image. I tried using this method here but as soon as the bitmap appears the sprite disappears, this is in the Sprite class: public boolean isCollision(Bitmap other) { if(other.getWidth() > x && other.getWidth() < x + width && >other.getHeight() > y && other.getHeight() < y + height); return true; }

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  • Site loads Extremely slowly over HTTPS; loads perfectly over HTTP - Sudden and new issue

    - by guest234239048
    My business' website suddenly started loading extremely slowly over HTTPS last night and continues through today. The facts: Page loadtime via HTTPS - 2 minutes +, HTTP - 3 seconds max. NO updates were done on any site files in the past 2 weeks. This is on Shared Hosting HTTPS has worked perfectly over the past 9 months then suddenly failed yesterday. Hosting company and SSL issuer say there are no problems on their end. - Searches for others having similar issues return no results, it appears to be just me... Site is primarily run via php/mysql Currently attempted troubleshooting: Tried all major browsers and different versions - same result. Tried 2 separate ISPs - same result. Tried proxies - same result. Tried 3 separate computers - same result. I'm basically at a total loss here. Does anyone know what could cause such a thing to happen? Please help guide troubleshooting.

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  • Java Extends value not updating

    - by James116
    I am currently working on a hibernate project(EJB and JSF), and i have multiple java classes. The data of parent is being change in the front end with JSF, however, it is not updating in the child class. Any idea as to what could be causing this? This is what i was doing. public class parent{ private String x = "UNKNOWN"; //Getters and setters public getX(){ } } public class child extends parent{ public string y{ //this is return UNKNOWN //instead of the new value being change by the user System.out.print(getX()); } } Thanks in advance

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  • C++ function returning pointer, why does this work ? [migrated]

    - by nashmaniac
    So heres a simple c++ function what it does it take an array of characters as its argument and a integer n and then creates a new character array with only n elements of the array. char * cutString(char * ch , int n){ char * p = new char[n]; int i ; for(i = 0 ; i < n ; i++) p[i] = ch[i]; while(i <= n ){ p[i++] = '\0'; } return p ; } this works just fine but if I change char * p = new char[n]; to char p[n]; I see funny characters what happens ? What difference does the former make also p is a temporary variable then how does the function returns it alright ?

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  • Compaq Presario R3000 randomly fails to boot on 11.10, 12.04, 12.10

    - by dlfuller
    I’m trying to figure what to do with random failures to boot. My old HP Presario R3000 with AMD Athlon XP-M sometimes boots, sometimes hangs with a blank screen during boot, and sometimes hangs on shutdown. After a few boot attempts it will finally boot to the GNU GRUB screen where I usually can select Recovery Mode, then select return to a normal boot, and the thing will startup and function normally. The pattern is not repeatable and seemed to start after upgrading from 11.04. Clean installs of 12.04 and 12.10 on newly-formatted hard drives make no difference. If this might be a clue, hangs on shutdown often stop at a line with: “pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3000-0x7fff: excluding 0x3000-0x30ff 0x3400-0x34ff 0x3800-0x38ff 0x3c00-0x3cff”. I did try the “acpi=off” modification from 11.10 randomly fails to boot on Compaq Presario R3000 with no change in these random boot failures. Any suggestions sure appreciated.

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  • How should dependencies be managed across a modular application?

    - by bear
    Let's say that we have a structure like this: Application -- Modules --Module1 -- Controller -- PublicHelper --Module2 -- Controller -- PublicHelper Whereby a module's Public Helper can provide helper functions. In nearly every module helper, the helper needs to access another module's public helper methods. Let's say for instance, in a PHP application: Module1 provides functionality to create a sale, and as part of the class Module1PublicHelper extends AbstractModuleHelper { public function createSale($customerId, $param, $param) { $userPublicHelper = // grab an instance of the user public helper $currentUser = $userPublicHelper->getCurrentUser(); } } class Module2PublicHelper extends AbstractModuleHelper { public function getCurrentUser() { //do something return $user; } } In this situation, the method needs to obtain an instance, either new or whatever of the user public helper. Given that all of Module Public Helper classes are instantiated with a minimum set of constructor params, e.g. EntityManager, what would be the best way to get a copy of it? Obviously, we can't really inject the user public helper class into the class containing createSale One solution would be to use a service locator or registry, however, testing the application isn't exactly easy.

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  • What makes a language (or feature) "hackerish"?

    - by iCanLearn
    I was reading the comments and answers to this question, and among them I found this: "And Java never was cool, simply because it threw the hacking part out of programming" and this: "And javascript is very hackerish language so after developing your frontend you feel very constraint when you return to java." What's the "hacking part" in programming, and what makes a language "hackerish"? What are some good examples of languages and features in languages that you would call "hackerish"? (Someone might say that I shouldn't be confused by the word "hackerish", that's it's not really a "proper" English word or something like that, but that's besides the point)

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  • Calculate random points (pixel) within a circle (image)

    - by DMills
    I have an image that contains a circles at a specific location, and of a specific diameter. What I need to do is to be able to calculate random points within the circle, and then manipulate said the pixels they correlate to. I have the following code already: private Point CalculatePoint() { var angle = _random.NextDouble() * ( Math.PI * 2 ); var x = _originX + ( _radius * Math.Cos( angle ) ); var y = _originY + ( _radius * Math.Sin( angle ) ); return new Point( ( int )x, ( int )y ); } And that works fine for finding all the points at the circumference of the circle, but I need all points from anywhere in the circle. If this doesn't make sense let me know and I will do my best to clarify.

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  • Load Web Pages Problem- Using Firefox and Chromium

    - by dylan0005
    Basicly my problem emerges when I try to load Facebook and Yahoomail, I don't know why Both browsers Firefox and Chromium don't load these webpages, but this problem only happen with UBUNTU, when I'm in windows no problem. Note: The other webpages like youtube, gmail etc load without any problem. I've tried these following quikcly solutions: -delete cookies, history and Temp files -return the browser to their original settings -desintall and install the browsers -Change the DNS configuration Nothing has been successfull. I need your help guys. What should I do?

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  • C# 5 - asynch method callback with Task.ContinueWIth? [migrated]

    - by user1142433
    I have a method that pulls some HTML via the HttpClient like so: public static HttpClient web = new HttpClient(); public static async Task<string> GetHTMLDataAsync(string url) { string responseBodyAsText = ""; try { HttpResponseMessage response = await web.GetAsync(url); response.EnsureSuccessStatusCode(); responseBodyAsText = await response.Content.ReadAsStringAsync(); } catch (Exception e) { // Error handling } return responseBodyAsText; } I have another method that looks like so: private void HtmlReadComplete(string data) { // do something with the data } I would like to be able to call GetHTMLDataAsync and then have it call HtmlReadComplete on the UI thread when the html has been read. I naively thought this could somehow be done with something that looks like GetHTMLDataAsync(url).ContinueWith(HtmlReadComplete); But, I can't get the syntax correct, nor am I even sure that's the appropriate way to handle it. Thanks in advance!

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  • Problem with Nvidia after update

    - by user214673
    After adding the most recent set of updates, I can't get into Ubuntu at all. I get a screen saying that I am running in low-graphics mode, 'your screen, graphics card and input device settings could not be detected correctly etc'. I can hit return and then get to the next screen saying 'what would you like to do?' however, i can't choose from the 4 options, the only keystroke that will register is escape, which takes me to a black screen with a login. I have an Nvidia GeForce 7050/nForce 610i and it has caused problems in the past, but I have always got round it by choosing to boot in recovery mode. Now, no matter which version I try to boot into I can't get into Ubuntu at all.

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  • i cant download things from software center

    - by mark
    i keep getting this error when i want to get an app from software crnter File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 972, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1096, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:I wasn't able to locate a file for the sun-java6-jre package. This might mean you need to manually fix this package. any one help please!!!!!!!! how do i manually fix!

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  • Cocos2d push scene with parameter, the parameter is reset after push. How to troubleshoot? Thoughts?

    - by user72693
    In the helloWorldLayer.m, I push a scene with some parameter like this [[CCDirector sharedDirector] replaceScene:[CCTransitionFade transitionWithDuration:0.2 scene:[RootLayer sceneWithInt:123]]]; where the RootLayer I have a modified method +(CCScene *) sceneWithInt:(int) i{ CCScene *scene = [CCScene node]; GameplayLayer *layer = [[GameplayLayer node] retain]; [layer setTestInt:i]; [scene addChild: layer z:0 tag:100]; return scene; } In the above, the "GameplayLayer" has an Int property "TestInt" which I would like to set it before this layer is push. However, the moment the GameplayLayer is loaded, that TestInt property is reset to 0. It is not passing correctly. I remember in my last project this can be done. How to troubleshoot this?

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  • Orienting ship movement in asteroids [closed]

    - by BadSniper
    Possible Duplicate: Move sprite in the direction it is facing? I'm programming asteroids game. I'm trying to give velocity in the direction of ship face. I've tried using velocity.x = velocity.x * cos r, velocity.y = velocity.y * sin r where velocity is a vector and r is the angle rotated. but it's not moving in right direction. Could someone help with this problem? It is supposed to return the vector in which ship is facing. I don't understand the problem.

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  • VBA functionality in Word 2007 [closed]

    - by Mac
    I have a VB system that utilises VBA and MSWord 20078. I have a few problems that I am hoping you solve for me. I need to search for a string in a Word 2007 document and then pickup all characters into a VB Variable from that string to the next carriage return inclusive. I will then manipulate the contents of the VB variable. When I find the search string I need to know what section of the document I am in. Once I have these two pieces of information I then need to continue to the next occurrence of the search string and repeat my functionality. Once I have dealt with the last occurrence of the search string I need to know that so that I can exit the process. Any assistance would be greatly appreciated

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  • in javascript why use " var that = this "

    - by tarek11011
    hi i am new with javascript What is the benefit of using this line var that = this An example function Person( firstname, lastname, age ) { this.firstname = firstname; this.lastname = lastname; this.age = age; getfullname = function() { return firstname + “ “ + lastname; }; var that = this; this.sayHi = function() { document.write( “Hi my name is “ + getfullname() + “ and I am “ + that.age + “years old.”); }; } thanks

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  • Double equals (Not equality) during assigning Java

    - by FabianCook
    When I tried searching this I would just get things on equality. When I was reading through some documentation for navigation in Android I had come across something I had never seen before. I came across this: mTitle = mDrawerTitle = getTitle(); It almost looks like something you can do in JavaScript where you can take the first not-null variable and assign it to a variable. In JavaScript I would do this: mTitle = mDrawerTitle || getTitle(); And it would return the first not null, in Java, is this double equals usage the equivalent in Java? What is this type of expression called?

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  • jQuery event not working after load

    - by Shina
    $(document).ready(function(){ $(function() { $('a.ajaxload').live('click', function(e) { var url = $(this).attr('href'); $('#desktopcontainer').load(url); // load the html response into a DOM element e.preventDefault(); // stop the browser from following the link }); }); $(function() { $(".accordion .accordion-tabs .tab").each(function(){ $(this).click(function(){ if ($(this).hasClass('tab')){ $(this).removeClass('tab'); $(this).addClass('active'); }else{ $(this).removeClass('active'); $(this).addClass('tab'); } $(this).next().slideToggle('slow'); return false; }); }); }); }); My tab works fine but after I click the "a.ajaxload" to add a content to the page, then my tab doesn't respond anymore. Can anyone please tell me where the problem is? Thank you in advance.

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  • Why can't I get 100% code coverage on a method that calls a constructor of a generic type?

    - by Martin Watts
    Today I came across a wierd issue in a Visual Studio 2008 Code Coverage Analysis. Consider the following method:  private IController GetController<T>(IContext context) where T : IController, new() {     IController controller = new T();     controller.ListeningContext = context;     controller.Plugin = this;     return controller; } This method is called in a unit test as follows (MenuController has an empty constructor): controller = plugin.GetController<MenuController>(null);  After calling this method from a Unit Test, the following code coverage report is generated: As you can see, Code Coverage is only 85%. Looking up the code results in the following: Apparently, the call to the constructor of the generic type is considered only partly covered. WHY? Google didn't help. And MSDN didn't help at all, of course. Anybody who does know?

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  • Learning to program styles? [closed]

    - by MrNewbProgrammer
    I'm a beginner programmer and I am currently developing an application of my own, just for the fun of it and learning to program. I'm building it from scratch, because I think that in this way I will learn the most. I have stumbled upon MVC's and CMS, CodeIgniter really got my attention, and the basic use is very straight forward. But I do not understand the inner workings completely. So I have decided that it might be better to just develop from scratch and maybe return to codeIgniter later, was that good decision? Would it be better to use CodeIgniter and learn from that?

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  • amixer volume controls applies twice

    - by user214604
    The volume increment or decrement is happening double the intended amount using amixer for my alsa driver using ./amixer -c 0 set Master 1- command. This happens becuase by default volume controls apply for both playback and capture moduels. My alsa driver config doesnt enabled any of the capture controls. even there is no capture enabled, the function from simple_none.c returns true for capture channel. All the capture volume controls are applied to my playback driver. static int is_ops(snd_mixer_elem_t *elem, int dir, int cmd, int val) case SM_OPS_IS_CHANNEL: return (unsigned int) val < s-str[dir].channels; ./amixer -c 0 set Master Playback 10+ ./amixer -c 0 set Master Playback 10 - ./amixer -c 0 set Master Capture 10+ ./amixer -c 0 set Master Capture 10 - I suspect capture is enabled by default in my system for alsa drivers. Let me know what are the things to ensure to disable the capture.

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