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  • Why does the compiler complain "while expected" when I try to add more code?

    - by user1893578
    Write a program with a word containing @ character as an input. If the word doesn't contain @, it should prompt the user for a word with @. Once a word with @ is read, it should output the word then terminate. This is what I have done so far: public class find { public static void main(String[] args) { System.out.println(" Please enter a word with @ "); Scanner scan = new Scanner(System.in); String bad = "@"; String word = scan.next(); do if (!word.contains(bad)) System.out.println(" Please try again "); else System.out.println(" " + word); while (!word.contains(bad)); } } I can get it to terminate after a word containing "@" is given as input, but if I try to add a Scanner to the line after "please try again", it says while expected.

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  • Is it poor practice to identify objects via an enumeration property, instead of using GetType()?

    - by James
    I have a collection of objects that all implement one (custom) interface: IAuditEvent. Each object can be stored in a database and a unique numeric id is used for each object type. The method that stores the objects loops around a List<IAuditEvent>, so it needs to know the specific type of each object in order to store the correct numeric id. Is it poor practice to have an enumeration property on IAuditEvent so that each object can identify itself with a unique enumeration value? I can see that the simplest solution would be to write a method that translates a Type into an integer, but what if I need an enumeration of audit events for another purpose? Would it still be wrong to have my enumeration property on IAuditEvent?

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  • JavaScript question related to the use of ' and "

    - by vatismarty
    my_window.document.write(' <script type="text/javascript"> function redirect(linkid) { opener.location.href=linkid; window.close(); } </script> <h1>Hello</h1> <p>Thank you.If you accidentally closed our website click <a href="javascript:redirect('http://google.com')">here</font></a> to go back to our website</p> '); This is my piece of code to close a already opened pop up window by redirecting it to google.com. I think there is some problem with matching the apostrophes ' and "... how to code with (' (" (' ') ") ')... is this correct? please help me with this. Please help me with the necessary changes wherever required.

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  • Solve Physics exercise by brute force approach..

    - by Nils
    Being unable to reproduce a given result. (either because it's wrong or because I was doing something wrong) I was asking myself if it would be easy to just write a small program which takes all the constants and given number and permutes it with a possible operators (* / - + exp(..)) etc) until the result is found. Permutations of n distinct objects with repetition allowed is n^r. At least as long as r is small I think you should be able to do this. I wonder if anybody did something similar here..

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  • Advanced Registry Monitoring

    - by RyanTimmons91
    I'm attempting to create a small utility to watch for the creation (or modification) of a specific registry key, and to kill the process responsible for causing that registry modification. I have had success in watching the changes to the registry via a class called 'RegistryMonitor', however it does not give you any information on what process initiated the registry call, through some googling I found that a library called 'EasyHook' should be able to do what I want, but all the documentation states that its designed for a per-application hook. The program itself is a temporary security patch, until our vendors come out with an official security update. As best I can tell there isn't a way to do exactly what I want to accomplish from C#, which is the only language I can comfortable write, test and execute software in. Any help on this would be appreciated I'm considering watching the registry changes via the program I already have, then if the change is discovered (the pc is already infected) running RKill and locking down the PC to prevent the issue from getting any worse

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  • DOMNodeInserted or hashchange

    - by jakey
    I am trying to write a JavaScript script that is "overlayed" on top of a Facebook page. It uses DOMContentLoaded to detect when content is loaded, then adds some extra stuff in. However, because Facebook doesn't actually "reload" the page when going to a new page (it just uses AJAX), the DOMContentLoaded handler doesn't run again, even though there is new stuff to look through. Anyway, to detect the change, I thought about using onhashchange since Facebook used to change the page's hash, but in Firefox 4 (I need to support Firefox 3 and later with this, but no other browsers), Facebook doesn't change the hash anymore and in pre-Firefox 3.6 there is no onhashchange. I thought about using DOMNodeInserted, but would that really slow down the page? (I really can't have any slowdowns in this script.)

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  • Sending two servlet responses per request

    - by sangi
    Hi, I write, because I can not solve the following problem. I have a servlet that processes some information. In response I put both text and binary content. How do I get two response, then two html page, starting from the same request? is a thing possible? The first response should continue to do what he does now, while the second would appear to make a popup window to save an image. There are easier ways to achieve the same result? Many thanks in advance

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  • .NET applications sometimes doesn’t work on Windows CE

    - by KZChris
    Hi, I write applications for Windowe ME and CE in C# .NET 2.0. Sometimes I’ve got problems because applications don’t work on some navigation devices. On Windowe ME it is not problem because .NET can be installed from a cab, but on most Windows CE devices it is impossible because after soft reset all changes disappear. I found out that in most difficult cases good solution is to put all dll-s belonging to .NET installation cab in the folder where the application runs and everything work well. However there are some devices for example Navroad NR460 (Windows CE 5.0) on which none of .NET applications work (it is funny because previous and next version of that navigation works well). I didn’t found on this device cgacutil.exe program. Is this possible to force the device to run any .NET application without installing the Windows again? What should I try to do to check if running .NET a applications is possible? What conditions should be fulfilled to run easiest application written even in .NET 1.0

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  • Refreshing the asp.net web page after validation

    - by user279521
    Hi, I have an asp.net web page (C# 2008) where the user would enter an EmployeeID, and when they tab out of the textbox, they get a messagebox prompting them to select one of two values from a dropdown listbox. The code for the message prompt in the codebehind is : Response.Write("<script>window.alert('Please select Alpha or Beta')</script>"); After the prompt is displayed, and the user clicks "ok" and returns to the page, the text on the page appears distorted (the text in labels are a size larger, the labels get wrapped to another line etc) I tried putting a Response.Redirect("UserProfileMaint.aspx"); after the messagebox in the codebehind, but now, the messagebox does not appear; I want to display the messagebox validation, and ensure the appearance of the text on the page is not distorted. How can I do this?

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  • C++: Print only one char

    - by Martijn Courteaux
    Hi, When I read one char* from std::cin and I want to write it to std::cout, it prints until it finds a \0 in memory. So what did was: char c; cin >> c; char* pChar = &c; pChar++; *pChar = '\0'; println(&c); // My own method: void println(char * str) { cout << str << endl; } But I don't think this is a safe action. Is there a safer way to do this?

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  • SQL query to select a range

    - by hansika attanayake
    I need to write an sql query (in c#) to select excel sheet data in "C" column starting from C19. But i cant specify the ending cell number because more data are getting added to the column. Hence i need to know how to specify the end of the column. Please help. I have mentioned the query that im using. I need to know what should be entered at the position of "C73"? OleDbCommand ccmd = new OleDbCommand(@"Select * From [SPAT$C19:C73]", conn);

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  • Choosing an alternative ( visual basic) high level programming language

    - by user370244
    I used to be visual basic 6 programmer, i was pleased with visual basic : it is high level language that do stuff fast,easy to learn, easy to do stuff in,you can drag and drop stuff to the form and write your code,it is simply amazing.however microsoft buried VB6 and pointed us to VB.NET which is so different that it is not the old VB anymore.I didn't like what microsoft did and would like to look somewhere AWAY from microsoft and from any other proprietary language . I would like to look into a similar language that is easy,cross platform (windows / Linux), object oriented, visual design, non proprietary and compile (for some guarding against reverse engineering). i am freelancer so the choice is entirely mine,i don't care about performance of programs, the time taken to develop a given programs is much more important. desktop / database / GUI /networking programming is what i am looking for. so any such language offered by our open source community ? thank you so much

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  • Know if a Website project is recompiling itself in the background?

    - by jdk
    A number of team members update a central ASP.NET dev site (Website project, not a Web application type). Some kinds of changes cause a recompile/rebuild in it. The large website takes a while to recompile and we've noticed it will still seemingly serve out dynamic pages before everything is internally updated. During the site's "gestation" period, our mileage varies while hitting it. Sometimes we get a correct page, sometimes an compilation error page that will eventually be served up without a compilation error, and at other times an unexpected hybrid. Is it possible to query an ASP.NET website application to see if it's currently compiling or rebuilding itself? If so I would write a status page that the team could reference when they're getting weird behaviour, so they would know to wait.

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  • UPDATE statement wrapped in an IF EXISTS block

    - by formica
    I'm trying to write a DML script that updates a column but I wanted to make sure the column existed first so I wrapped it in a IF EXISTS block IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='Client' AND COLUMN_NAME='IsClarityEnabled') BEGIN UPDATE Client SET IsClarityEnabled = 1 WHERE ClientID = 21 END So the weirdness is that it tries to execute the update even if it fails the condition. So column doesn't exist and the UPDATE statement runs and I get an error. Why? Even stranger is that this does work: IF EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='Client' AND COLUMN_NAME='IsClarityEnabled') BEGIN EXEC('UPDATE Client SET IsClarityEnabled = 1 WHERE ClientID = 21') END Is there something special about an UPDATE command that causes it to behave this way?

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  • question about Tetration

    - by davit-datuashvili
    i have question how write program which calculates following procedures http://en.wikipedia.org/wiki/Tetration i have exponential program which returns x^n here is code public class Exp{ public static long exp(long x,long n){ long t=0; if (n==0){ t= 1; } else{ if (n %2==0){ t= exp(x,n/2)* exp(x,n/2); } else{ t= x*exp(x,n-1); } } return t; } public static void main(String[]args){ long x=5L; long n=4L; System.out.println(exp(x,n)); } } but how use it in Tetration program?please help

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  • How can I get my app ready for the iPhone 5

    - by RazorSharp
    Apple just announced the iPhone 5 with a 4 inch screen and a 16:9 aspect ratio. Of course, they only give developers two weeks to scramble to update their apps without being able to test. I'd like to update my app for the iPhone 5's new big screen, but there's nothing on Apple's developer site about the iPhone 5 or making your apps ready for a larger screen. It would be a pain to have to write my own logic for testing whether the device is an iPhone 5 and then displaying a custom storyboard file for it. Does anyone know how the new sizing works or if there are any hidden Xcode for this?

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  • Using jquery, what is the simplest function to post some json data and process a returned json respo

    - by Chris Boesch
    When users click on an element in my webpage, I would like to call a javascript function that reads the values of a few text boxes on the page, wraps their contents as json where the keys are the ids for the text boxes and the values are the contents of each text box, and then posts the resulting json to a url. I would then like the same function to expect back a json response and call another javascript function with the returned json data. Question: What is the best way to write the javascript function to create a json structure from html elements, post the json with jquery, and call another javascript function with the resulting json response from the server?

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  • Dependent Dropdown inside Joomla

    - by kernel
    I was trying to implement the Ajax method for deploying dependent drop down select boxes inside Joomla. The Problem is that if you call an ajaxRequest to run a php with the query that populates the second drop down depending on the result of the first, this is out of the joomla framework and you can't use anything from the joomla functions. So I need to copy into the new file all the details of my dbase login + to write down the html+php to populate the options. I was thinking whether there is an easier solution to this problem. Maybe the Joomla framework supports something like this. Any ideas?

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  • how to generate uncorrelated random numbers in repeated calls in parallel?

    - by user1446948
    I want to write a function which will be repeatedly called by other functions many times. Inside this function it is supposed to generate a lot of random numbers and this part will be treated in parallel. If only for one run, the seed can be chosen differently for each thread, so that the random numbers will be uncorrelated. However, if this function will be called the 2nd time, it seems that the random numbers will repeat unless the seed will be again changed during the later calls. So my question is, is there a good way to generate the random numbers or reset the seed so that the random numbers generated by repeated calls to this function and also by different threads are really random? Thank you.

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  • AJAX - how to make autocomplete/autosuggestion and show results outside form, in table

    - by michael85
    hello im trying to make a simple page with search engine. i read, that if i want to implement autocomplete/autosuggest with form, i have to use ajax. thats ok for me. there are a lot solutions on the intenret, but unfortunetly all of them is the same script :/ and thats fine for me :) but i want to go further. i want to show autosuggest results in table for example below search form. the data is stored in a simple array (eventualy, source mysql) i know that kind of script isnt easy to write, so i ask you to give me a hint or something. trivial solution is use php, but this needs submit button. help, im stuck :)

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  • Django model data consistency

    - by Mark
    When creating a form, you can define a bunch of methods, clean_xyz, to make sure the data gets forced into the correct format. Is there any way to do this on a model level? Perhaps I can override the field setters somehow? I want it so that if I write something like my_address.postal_code = 'a1b2c3' It will automatically get formatted into A1B 2C3. Perhaps throw an exception if it can't be converted. That way I know I'll never have any malformed data in the database.

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  • read variables from file

    - by TonyVipros
    Hi, I'm trying to write a shell script to backup websites, I've got it to go through each directory in vhosts and create a new directory vhosts/{siteurl}/private/backups/ and gzip up the site into there. However, I also want it to read a file from private that will contain database name, user and password. So I can then use these to perform a mysqldump to private/backups/. The problem is that I've never written a shell script before so I've go no idea how to read variable data into my script, or how I should format the file to be read. Hope that's enough information.

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  • How can i trim or remove " , " at the end of my query?

    - by Phsika
    i try to write a query but my query finished with "Control nvarchar(500), ". i want to finish "Control nvarchar(500)" How can remove ",", " "? void SqlTable(List listMyColumnNames, string TableName) { string Text = "Create table ENG_"+TableName+" (ENG_"+TableName+"_ID integer PRIMARY KEY identity(1,1), "; char[] MyChar = {',', ' ' }; for (int i = 0; i < listMyColumnNames.Count; ) { Text+=listMyColumnNames[i]+" nvarchar(500), "; if (i == listMyColumnNames.Count-1) Text.TrimEnd(MyChar); i++; } Text+=" )";

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  • Best practices for storing & selecting time/date with php & mysql?

    - by Adam
    I often find myself storing data in a mysql database, and then wanting to display all sorts of stats about my data, specifically stuff like 'how many rows do I have for this date, or that date'. Does anyone know of (or could write) a good tutorial on this subject? Ideally a good tutorial would overview: Best practices when storing the data (i.e. what formats to use, how to use them servertime vs. generated time, etc.) Best practices when selecting data from the database with php (i.e. how to sort rows by date, how to retrieve only rows from a certain date, or a certain hour, etc).. Timezones and other issues that might come up. Thanks in advance.

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  • building a hash lookup table during `git filter-branch` or `git-rebase`

    - by intuited
    I've been using the SHA1 hashes of my commits as references in documentation, etc. I've realized that if I need to rewrite those commits, I'll need to create a lookup table to correspond the hashes for the original repo with the hashes for the filtered repo. Since these are effectively UUID's, a simple lookup table would do. I think that it's relatively straightforward to write a script to do this during a filter-branch run; that's not really my question, though if there are some gotchas that make it complicated, I'd certainly like to hear about them. I'm really wondering if there are any tools that provide this functionality, or if there is some sort of convention on where to keep the lookup table/what to call it? I'd prefer not to do things in a completely idiosyncratic way.

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