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  • C# ATM Bank coding help needed please

    - by user1735692
    if anyone can help with with I would be grateful. I am trying to make a program in c# that acts like an ATM with withdrawing, depositing money, displayed in Program.cs that is connected to Account.cs linked class programs. At the moment it works if I manually input the data and tell it what to display, but I what to do is - Allow users to enter amounts to deposit and withdraw using overloaded implementations of the methods makeDeposit and makeWithdrawal. I have tried many things, and can not get it to work, if anyone can help, I would be grateful if anyone can, thanks again Program.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Tut9 { class Program { static void Main(string[] args) { Account myAcc = new Account(); myAcc.makeDeposit(10000); myAcc.showBalance(); Console.WriteLine("Attempting to withdraw £" + 90); myAcc.makeWithdrawal(90); myAcc.showBalance(); myAcc.giveOverdraft(50); myAcc.showBalance(); Account student = new Account(30, -100); student.giveOverdraft(-500); } } } Account.cs using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Tut9 { class Account { ////Need to know the balance & ovedraft private int balance; private int overdraft; ////Constructor public Account() { balance = 0; overdraft = 0; } public Account(int initial) { balance = initial; } public Account(int intial, int over) { balance = intial; overdraft = over; } public void giveOverdraft(int amount) { overdraft = amount; } ////Method to display the balance & overdraft public void showBalance() { Console.WriteLine("The balance is now £" + balance); if (overdraft != 0) { Console.WriteLine("You have an overdraft of £" + overdraft); } } ////Method to make a withdrawl public void makeWithdrawal(int y) { balance = balance - y; Console.WriteLine("Withdrew £" + y); } ////Method to make deposit public void makeDeposit(int x) { balance = balance + x; Console.WriteLine("Desposited £" + x); } } }

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  • Listing C/C++ functions (Code analysis in Unix)

    - by Jond
    Whether we're maintaining unfamiliar code or checking out the implementation details of an Apache module it can help if we can quickly traverse the code and build up an overview of what we're looking at. Grep serves most of my daily needs but there are some cases where it just wont do. Here's a common example of how it can help. To find the definition of a PHP function I'm interested in I can type this at the command line: grep -r "function myfunc" . This could be adapted very quickly to C or C++ if we know the return type, but things become more complicated if, say, I want to list every method that my class provides: grep "function " ./src/mine.class.php Since there's no single keyword that denotes a function or method in C++ and because it's generally more complex syntax, I think I'd need some kind of static code analysis tool, smart use of the C Preprocessor or blind faith the coder followed strict code guidelines (# of whitespace, position of curlies etc) to get these sorts of results. What would you recommend? p.s. be nice, this is my first post ;-) :p

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  • Activiti Engine: Task Event - User is null

    - by sockeqwe
    I have a problem, which should be simple to solve, but i can't find the method to call to solve this problem: My problem is, that every Task Event (org.activiti.engine.task.Event) returnes null by calling Event.getUserId(); If I take a look into the database I see that the database table ACT_HI_COMMENT has null as value for the column USER_ID_ for every row. I generate these TaskEvents programmatically by calling (for example) processEngine.getTaskService().addComment(task.getId(), null, commentMessage); processEngine.getTaskService().addUserIdentityLink(task.getId(), user.getId(), IDENTITY_LINK_OBSERVER); I guess there is a simple method that I must call to solve this problem, something like processEngine.setCurrentUser(authenticatedUser.getId()); Any suggestions?

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  • Serialize an object to string

    - by Vaccano
    I have the following method to save an Object to a file: // Save an object out to the disk public static void SerializeObject<T>(this T toSerialize, String filename) { XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType()); TextWriter textWriter = new StreamWriter(filename); xmlSerializer.Serialize(textWriter, toSerialize); textWriter.Close(); } I confess I did not write it (I only converted it to a extension method that took a type parameter). Now I need it to give the xml back to me as a string (rather than save it to a file). I am looking into it, but I have not figured it out yet. I thought this might be really easy for someone familiar with these objects. If not I will figure it out eventually.

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  • Best approach to update a control after an Ajax request?

    - by Cuga
    I have a webpage that fires off an Ajax request which stores some data to a database and I want to update the webpage so that the user can see their changes have been submitted. There are at least 3 ways I can think of accomplishing this: Immediately update the webpage with plain JavaScript by grabbing the contents of the user's inputted text and immediately inserting it where it belongs. Have the ajax call return the stored text as the response, grab the response, and then insert this text where it belongs on the page using JavaScript Have the ajax call return a flag (say, true for successful db write, false otherwise), and if the flag is true, use JavaScript to grab the user's contents from the input control and insert it where it belongs elsewhere on the page Or another method not mentioned...? I don't mean this to be subjective, I just don't know which would be the best method to apply. My instinct tells me to go with the third item (return a flag, then update the field). Is this the best way? Thanks

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  • IList<T> and IReadOnlyList<T>

    - by Safak Gür
    My problem is that I have a method that can take a collection as parameter that, Has a Count property Has an integer indexer (get-only) And I don't know what type should this parameter be. I would choose IList<T> before .NET 4.5 since there is no other indexable collection interface for this and arrays implement it, which is a big plus. But .NET 4.5 introduces the new IReadOnlyList<T> interface and I want my method to support that, too. How can I write this method to support both IList<T> and IReadOnlyList<T> without violating the basic principles like DRY? Can I convert IList<T> to IReadOnlyList<T> somehow in an overload? What is the way to go here? Edit: Daniel's answer gave me some pretty ideas, I guess I'll go with this: public void Do<T>(IList<T> collection) { DoInternal(collection, collection.Count, i => collection[i]); } public void Do<T>(IReadOnlyList<T> collection) { DoInternal(collection, collection.Count, i => collection[i]); } private void DoInternal<T>(IEnumerable<T> collection, int count, Func<int, T> indexer) { // Stuff } Or I could just accept a ReadOnlyList<T> and provide an helper like this: public static class CollectionEx { public static IReadOnlyList<T> AsReadOnly<T>(this IList<T> collection) { if (collection == null) throw new ArgumentNullException("collection"); return new ReadOnlyWrapper<T>(collection); } private sealed class ReadOnlyWrapper<T> : IReadOnlyList<T> { private readonly IList<T> _Source; public int Count { get { return _Source.Count; } } public T this[int index] { get { return _Source[index]; } } public ReadOnlyWrapper(IList<T> source) { _Source = source; } public IEnumerator<T> GetEnumerator() { return _Source.GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); } } } Then I could call Do(array.AsReadOnly())

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  • iOS enterprise program - In-house Distribution

    - by fr33d0m
    I'm development a app for iPad that will be used within the company only. As the devices that will use the app will be more than 100, the company need to join iOS enterprise program. How works the distribution for In-house distribution? I need to register all the devices to generate one Certificate for the app? Or I can generate one Certificate and the app will work on every devices? Apple need to approve the application for In-house distribution? The company's objective for distribution will be deploy the application on their website so the employees can access the web site, login, and download the app for theirs devices. There is any roles from apple that does not approve this method? What is the best method for distribution In-house app?

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  • Object initialization sequence in Objective-C

    - by Alex
    Hello everyone. The Cocoa framework has a convention to always call self = [super init] in the init method of an inherited class, because [super init] may return a new instance. What will happen if I do this? @interface MyClass : NSObject /* or any other class */ { int ivar_; } @end @implementation MyClass - (id)init { ivar_ = 12345; if ((self = [super init])) { NSLog(@"ivar_'s value is %d", ivar_); } return self; } @end In the case when [super init] returns a new instance, what will I see in the console? ivar_'s value is 0? I can't think of a way to check this myself, because I don't know which class may return a new instance from its init method. Also, can't seem to find explicit clarification for this scenario in the docs. Could anyone help me out? Thanks!

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  • Methods specific only to an instance? What are they called in Ruby?

    - by daremarkovic
    I know there are "instance methods", "class methods" but what are these types of methods called, for eg: s1 = "This is my STRING!" def s1.m1 downcase end p s1 # => "This is my STRING!" p s1.m1 # => "this is my string!" What type of method is the "m1" method called on the s1 "instance" of the "string" class? It's really weird because I didn't know this was possible at all if I try: s2 = "This is ANOTHER string" s2.m1 # => Won't work! Which kind of makes sense, but not sure why defining methods like m1 on instances on a class are useful at all.

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  • App crashes on back button / Activities & Intents

    - by paradroid666
    I have an android application which starts a new activity Intent startAuthorization = new Intent(AndroidActivity, AuthorizeUser.class); startActivityForResult(startAuthorization,4711); When that new activity is done (a ok button is clicked) I call setResult(RESULT_OK, returnResult); finish(); Which works fine. In case the user doesn't click the okay button but uses the return button of the phone (this arrow pointing around to the left) the application has a force close. I have set a breakpoint on the first line of my method onActivityResult but the debugger never stops there. I have no idea where the issue comes up - how can I find out? Is there a method I have to overwrite to handle this back button?

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  • Is scala functional programming slower than traditional coding?

    - by Fred Haslam
    In one of my first attempts to create functional code, I ran into a performance issue. I started with a common task - multiply the elements of two arrays and sum up the results: var first:Array[Float] ... var second:Array[Float] ... var sum=0f; for(ix<-0 until first.length) sum += first(ix) * second(ix); Here is how I reformed the work: sum = first.zip(second).map{ case (a,b) => a*b }.reduceLeft(_+_) When I benchmarked the two approaches, the second method takes 40 times as long to complete! Why does the second method take so much longer? How can I reform the work to be both speed efficient and use functional programming style?

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  • How to make Cutsomized Setup and Deployment

    - by deepu
    I'm currently developing a window application in VS2005,i need to make a setup of the product..and i had used setup and deployment project in VS2005 and created the setup but in the setup process... dialogs cannot be modified.. according to my needs...(ie it will be the same for all products installation only can change the heading , product name or top-banner) i like to make a setup the look the normal software installation...(like Visual studio ,photo shop installation)how is it possible to make a custom setup method..Is there any Custom setup & deployment method which is easy to do...plss help..me to create a better view during the product installation

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  • Behaviour to simulate an enum implementing an interface

    - by fearofawhackplanet
    Say I have an enum something like: enum OrderStatus { AwaitingAuthorization, InProduction, AwaitingDespatch } I've also created an extension method on my enum to tidy up the displayed values in the UI, so I have something like: public static string ToDisplayString(this OrderStatus status) { switch (status) { case Status.AwaitingAuthorization: return "Awaiting Authorization"; case Status.InProduction: return "Item in Production"; ... etc } } Inspired by the excellent post here, I want to bind my enums to a SelectList with an extension method: public static SelectList ToSelectList<TEnum>(this TEnum enumObj) however, to use the DisplayString values in the UI drop down I'd need to add a constraint along the lines of : where TEnum has extension ToDisplayString Obviously none of this is going to work at all with the current approach, unless there's some clever trick I don't know about. Does anyone have any ideas about how I might be able to implement something like this?

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  • textFieldShouldBeginEditing + UIKeyboardWillShowNotification + OS 3.2

    - by user193545
    I have multiple textfields on a UIView. I resign for a previous textField in textFieldShouldBeginEditing method, where following sequence of events are performed UIKeyboardWillHideNotification is received corresponding to that field where the keyboard for the previous field is hidden. the method textFieldShouldBeginEditing returns a YES and then UIKeyboardWillShowNotification is received where the keyboard for the current field is displayed. However, in OS 3.2 even though textFieldShouldBeginEditing returns a YES, UIKeyboardWillShowNotification for the current field is not received. The logic works for OS < 3.2 Any ideas where I might be doing wrong?

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  • Persisting user control values afer postback in asp.net

    - by user557135
    Hi, I have a few user controls which I add to the aspx form depending on the user's choice from a combo box. I have a user control which has a textbox in it and a getValue() method that returns the value of the textbox. After user selects the related item I load the control and add to a panel using loadControl method. User enters some text. After a postback I want to keep the user control and the user input in the same state before . Hope i could be clear. Thanks in advanced

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  • Java Authenticator on a per connection basis?

    - by Martijn Laarman
    I'm building an Eclipse plugin that talks to a REST interface which uses Basic Authentication. When the authentication fails I would like to popup my plugin's settings dialog and retry. Normally I could use the static Authenticator.setDefault() to setup an authenticator for all HttpURLConnection's for this, but since I am writing a plugin I don't want to overwrite Eclipse's default Authenticator (org.eclipse.ui.internal.net.auth); I thought of setting my custom Authenticator before loading and putting Eclipse's default back afterwards, but I imagine this will cause all sorts of race issues with multithreading so I quickly lost that notion. Google searches yield all sorts of results basically telling me it's not possible: The Java URLConnection API should have a setAuthenticator(Authenticator) method for making it easier to use this class in multi-threaded context where authentication is required. Source If applications contains few third party plugins and each plugin use its own Authenticator what we should do? Each invocation of "Authenticator.setDefault()" method rewrite previously defined Authenticator... Source Are there any different approaches that might help me overcome this issue?

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  • comparing int values in android

    - by user1183066
    I am making an android game that is checking the players health value when this method is being runned. But however, it's not reacting. It doesn't do anything, when the value is less than 3, it shouldn't do anything, but when it is equal to 3, it should run a method. Please help me and thanks SO much in advance! This is the code that i am using: private void checkLivesLeftValue() { if (livesLeftValue == 3) { //Message to display: "You lost! onMethod(); } else { livesLeftValue = livesLeftValue + 1; } }

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  • Printing python tkinter output

    - by Eric
    I am trying to print the contents of a python tkinter canvas. I have tried using the postscript method of canvas to create a postscript file, but I get a blank page. I know this is because I have embedded widgets, and these do not get rendered by the postscript method. Before I rewrite my program to create a more printer-friendly layout, can someone suggest a way to approach this problem? All of the programming books I have ever read approach the problem of sending output to a printer with a bit of hand-waving, something along the lines of: "It's a difficult problem that depends on interacting with the operating system." I also have a hard time finding resources about this because of all the pages related to printing to the screen. I am using Python 2.6, on Ubuntu 9.04.

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  • Javascript syntax error

    - by Mel
    Hello, I'm wondering if anyone can help me with a syntax error in line 14 of this code: The debugger says expected ')' after argument list on var json = eval('(' + content ')'); I tried adding a bracket, but it doesn't seem to be working. // Tooltips for index.cfm $(document).ready(function() { $('#catalog a[href]').each(function() { $(this).qtip( { content: { url: 'components/viewgames.cfc?method=fGameDetails', data: { gameID: $(this).attr('href').match(/gameID=([0-9]+)$/)[1] }, method: 'get' }, api: { beforeContentUpdate: function(content) { var json = eval('(' + content ')'); content = $('<div />').append( $('<h1 />', { html: json.TNAME })); return content; } }, }); }); });

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  • How to add a slot to my main window in Qt builder?

    - by George Edison
    I am using Qt Builder to create a simple window. I used the menu editor to add a menu. Now, I figured out how to connect one of the menu items to the close() method of the main window. My problem is how to add a slot to the main window. Here is what I have: private slots: void OnAbout(); However, I can't get this method to show up in the 'Signals and Slots Editor'. How can I get it to show up?

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  • Java Inheritance Concept Understanding

    - by Nirmal
    Hello All.... I am just refreshing the oops features of the java. So, I have a little confusion regarding inheritance concept. For that I have a following sample code : class Super{ int index = 5; public void printVal(){ System.out.println("Super"); } } class Sub extends Super{ int index = 2; public void printVal(){ System.out.println("Sub"); } } public class Runner { public static void main(String args[]){ Super sup = new Sub(); System.out.println(sup.index+","); sup.printVal(); } } Now above code is giving me output as : 5,Sub. Here, we are overriding printVal() method, so that is understandable that it is accessing child class method only. But I could not understand why it's accessing the value of x from Super class... Thanks in advance....

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  • opengl es transparent fog in android

    - by Sponge
    I was wondering why the fog i use in opengl es on my android phone isn't transparent when i set the colors alpha to 0. I set the background to transparent and it works fine and the Color class or the toFloatBuffer() method are working fine for my meshes but when i set the fog color to transparent then this fact is ignored. here is the basic code i use for fog in the onSurfaceCreated() method of my renderer: gl.glFogf(GL10.GL_FOG_MODE, GL10.GL_LINEAR); gl.glFogf(GL10.GL_FOG_START, 4.0f); gl.glFogf(GL10.GL_FOG_END, 10.0f); gl.glFogfv(GL10.GL_FOG_COLOR, new Color(0,0,0,0).toFloatBuffer()); gl.glEnable(GL10.GL_FOG);

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  • Putting li's into rows

    - by panthro
    I have a long list of li's. <ul> <li> <img src="test.jpg"> </li> <li> <img src="test.jpg"> </li> //etc Each li has this styling: width: 10%; display: inline-block; vertical-align: middle; When I get to more than 10 li's in a row, they go on to the next row. Is this the correct way to do it? or should I wrap each 10 li's into something that breaks the line? What the best/correct method? i intialy chose this method as it would be easily to loop out data from a database.

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  • How to prompt for username and password entry in C# / SQL ASP.NET web app?

    - by salvationishere
    How do I prompt for username and password in my C#/SQL web application? This was developed in VS 2008 on a 32-bit XP. The current connection string I'm using in my web.config file is: <add name="AdventureWorksConnectionString2" connectionString="Data Source=SIDEKICK;Initial Catalog=AdventureWorks;Persist Security Info=false; " providerName="System.Data.SqlClient" /> When I select Basic Authentication it pops up the warning: "The authentication option you have chosen results in passwords being sent over the network without data encryption..." How do I choose this authentication method and still send passwords over securely? So essentially I am looking for the most secure authentication method but that still requires users to input password?

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  • Best practices for parsing HTML from Wikipedia for iPhone viewing?

    - by ivanTheTerrible
    I am building an iPhone Wikipeida game app, that requires modifying the default Wiki HTML a little bit (mostly simplifying the page). So far I am directly downloading the HTML output from en.wikipedia.org/wiki/Article_Foo to a python Google App Engine, and then modify its CSS and HTML structure, cache it, and finally output to iPhone. It works but I find this method quite tedious, there must be a better method? Please note that I use App Engine not just for parsing the Wiki, but the game also requires it to keep the stores...etc, hence not a overkill. Also, I would prefer doing all the work with python on App Engine, to keep the iPhone client as thin and mobile as possible (XML on iPhone is a big no fun) Thanks a lot.

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