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  • Splitting up input using regular expressions in Java

    - by Joe24
    I am making a program that lets a user input a chemical for example C9H11N02. When they enter that I want to split it up into pieces so I can have it like C9, H11, N, 02. When I have it like this I want to make changes to it so I can make it C10H12N203 and then put it back together. This is what I have done so far. using the regular expression I have used I can extract the integer value, but how would I go about get C10, H11 etc..? System.out.println("Enter Data"); Scanner k = new Scanner( System.in ); String input = k.nextLine(); String reg = "\\s\\s\\s"; String [] data; data = input.split( reg ); int m = Integer.parseInt( data[0] ); int n = Integer.parseInt( data[1] );

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  • Find record whose field 'name' not contained within any other record

    - by charlie
    I have a model Foo with a String bar and a String name. Some records' bar contain the name of other records in them. This is intentional. I want to find the "root Foo" records - that is, the ones where their name do not appear in the bar records of any other Foo records. Example: Foo id: 1 name: 'foo1' bar: 'something something' id: 2 name: 'foo2' bar: 'foo1 something' id: 3 name: 'foo3' bar: 'foo1, foo4' My method root_foos would return foo2 and foo3 since their names do not appear in any bar string. edit: I don't want to use a relation or foreign key here - just this method.

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  • Elegant way to distinct Path or Entry key

    - by sum1stolemyname
    I have an application loading CAD data (Custom format), either from the local filesystem specifing an absolute path to a drawing or from a database. Database access is realized through a library function taking the drawings identifier as a parameter. the identifiers have a format like ABC 01234T56-T, while my paths a typical windows Paths (eg x:\Data\cadfiles\cadfile001.bin). I would like to write a wrapper function Taking a String as an argument which can be either a path or an identifier which calls the appropriate functions to load my data. Like this: Function CadLoader(nameOrPath : String):TCadData; My Question: How can I elegantly decide wether my string is an idnetifier or a Path to a file? Use A regexp? Or just search for '\' and ':', which are not appearing in the Identifiers?

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  • Error when customize ValidationMessageFor

    - by user1542080
    i want to customize ValidationMessageFor which display error. when i run application, a get an error : No overload for method 'ValidationMessageFor' takes 1 arguments I'm understand my error, but i don't know how to fix it ? I need some suggest . Thanks you for reading! My code : using System.Linq.Expressions; using System.Web; using System.Web.Mvc; namespace OurCompanyUI.app_code { public static class MyHtml { public static MvcHtmlString ValidationMessageFor<TModel, TProperty>( this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, string validationMessage, IDictionary<string, Object> htmlAttributes ) { string modelName = ExpressionHelper.GetExpressionText(expression); TagBuilder p = new TagBuilder("p"); p.InnerHtml = htmlHelper.ValidationMessageFor(htmlHelper,expression).ToString(); // p.InnerHtml = htmlHelper.ValidationMessageFor().ToString(); return MvcHtmlString.Create(p.ToString(TagRenderMode.Normal)); } } }

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  • python-wordmatching

    - by challarao
    Write two functions, called countSubStringMatch and countSubStringMatchRecursive that take two arguments, a key string and a target string. These functions iteratively and recursively count the number of instances of the key in the target string. You should complete definitions for def countSubStringMatch(target,key): and def countSubStringMatchRecursive (target, key): For the remaining problems, we are going to explore other substring matching ideas. These problems can be solved with either an iterative function or a recursive one. You are welcome to use either approach, though you may find iterative approaches more intuitive in these cases of matching linear structures.

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  • C++ Beginner - Simple block of code crashing, reason unknown.

    - by Francisco P.
    Hello everyone, Here's a block of code I'm having trouble with. string Game::tradeRandomPieces(Player & player) { string hand = player.getHand(); string piecesRemoved; size_t index; for (size_t numberOfPiecesToTrade = rand() % hand.size() + 1; numberOfPiecesToTrade != 0; --numberOfPiecesToTrade) { index = rand() % hand.size(); piecesRemoved += hand[index]; hand.erase(index,1); } player.removePiecesFromHand(piecesRemoved); player.fillHand(_deck); return piecesRemoved; } I believe the code is pretty self explanatory. fillhand and removepiecesfromhand are working fine, so that's not it. I really can't get what's wrong with this :( Thanks for your time

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  • calling a java class in a servlet

    - by kawtousse
    hi, in my servlet i called an instance of a class.java( a class that construct an html table) in order to create this table in my jsp. the servlet is like the following: String report=request.getParameter("selrep"); String datev=request.getParameter("datepicker"); String op=request.getParameter("operator"); String batch =request.getParameter("selbatch"); System.out.println("report kind was:"+report); System.out.println("date was:"+datev); System.out.println("operator:"+op); System.out.println("batch:"+batch); if(report.equalsIgnoreCase("Report Denied")) { DeniedReportDisplay rd = new DeniedReportDisplay(); rd.ConstruireReport(); } else if(report.equalsIgnoreCase("Report Locked")) { LockedReportDisplay rl = new LockedReportDisplay(); rl.ConstruireReport(); } request.getRequestDispatcher("EspaceValidation.jsp").forward(request, response); in my jsp i can not display this table even empty or full. note: exemple a class that construct denied Report has this structure: /*constructeur*/ public DeniedReportDisplay() {} /*Methodes*/ @SuppressWarnings("unchecked") public StringBuffer ConstruireReport() { StringBuffer retour=new StringBuffer(); int i = 0; retour.append("<table border = 1 width=900 id=sheet align=left>"); retour.append("<tr bgcolor=#0099FF>" ); retour.append("<label> Denied Report</label>"); retour.append("</tr>"); retour.append("<tr>"); String[] nomCols ={"Nom","Prenom","trackingDate","activity","projectcode","WAName","taskCode","timeSpent","PercentTaskComplete","Comment"}; //String HQL_QUERY = null; for(i=0;i< nomCols.length;i++) { retour.append(("<td bgcolor=#0066CC>")+ nomCols[i] + "</td>"); } retour.append("</tr>"); retour.append("<tr>"); try { s= HibernateUtil.currentSession(); tx=s.beginTransaction(); Query query = s.createQuery("select opcemployees.Nom,opcemployees.Prenom,dailytimesheet.TrackingDate,dailytimesheet.Activity," + "dailytimesheet.ProjectCode,dailytimesheet.WAName,dailytimesheet.TaskCode," + "dailytimesheet.TimeSpent,dailytimesheet.PercentTaskComplete from Opcemployees opcemployees,Dailytimesheet dailytimesheet " + "where opcemployees.Matricule=dailytimesheet.Matricule and dailytimesheet.Etat=3 " + "group by opcemployees.Nom,opcemployees.Prenom" ); for(Iterator it=query.iterate();it.hasNext();) { if(it.hasNext()){ Object[] row = (Object[]) it.next(); retour.append("<td>" +row [0]+ "</td>");//Nom retour.append("<td>" + row [1] + "</td>");//Prenom retour.append("<td>" + row [2] + "</td>");//trackingdate retour.append("<td>" + row [3]+ "</td>");//activity retour.append("<td>" + row [4] +"</td>");//projectcode retour.append("<td>" + row [5]+ "</td>");//waname retour.append("<td>" + row [6] + "</td>");//taskcode retour.append("<td>" + row [7] + "</td>");//timespent retour.append("<td>" + row [8] + "</td>");//perecnttaskcomplete retour.append("<td><input type=text /></td>");//case de commentaire } retour.append("</tr>"); } //terminer la table. retour.append ("</table>"); tx.commit(); } catch (HibernateException e) { retour.append ("</table><H1>ERREUR:</H1>" +e.getMessage()); e.printStackTrace(); } return retour; } thanks for help.

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  • Obsolete createEvenSource

    - by user311130
    Hello, I want to create a new customevent log ( "My EeventLog") on a remote machine. createEventSource(String,String,String) method was perferct for my need. Unfortenatly, this method is Obsolete. My questions is: the two other alternatives don't allow evenlog creation over a remote machine (correct me if I'm wrong). http://msdn.microsoft.com/en-us/library/system.diagnostics.eventlog.createeventsource.aspx So, my easiest way to do it- is be created a new exe and run it remotely with Psexe. right? Could I count eventlog entries that have some specific ID ? Regards,

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  • JPA generic field

    - by m.ugues
    Hallo all Is it possible to persist a generic field? I have this property on an Entity class ... private T payload; ... T extends EventMessagePayload and public interface StringPayload extends EventMessagePayload{ String getPayload(); } In my application i persist the field only when is of String type and during the save operation all works great. When I read the object instead JPA try to create a String object but instead is a StringPaylod. Is there a way to intercept the creation and handle the object marshalling? Kind regards Massimo

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  • Is LocalDB supported by Visual Studio 2010 in Entity Framework 5?

    - by Mathias Lykkegaard Lorenzen
    Is LocalDB supported by Visual Studio 2010 in Entity Framework 5, on .NET 4.0? Or am I doing it wrong? I'm getting a "The network path can't be found" issue when instantiating my model container with a connection string for LocalDB. Here's the connection string: var connectionString = "metadata=res://*/Model.csdl|res://*/Model.ssdl|res://*/Model.msl;provider=System.Data.SqlClient;provider connection string=\"data source=(localdb)\v11.0;initial catalog=fablelane_com_db;integrated security=SSPI;multipleactiveresultsets=True;App=EntityFramework\""; Edit 1 I'm receiving the following error when connecting, more specifically: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server). Edit 2 I just figured out that changing to Visual Studio 11 beta doesn't work either. Still receiving the same error-message.

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  • JUnit - Testing a method that in turn invokes a few more methods

    - by stratwine
    Hi, This is my doubt on what we regard as a "unit" while unit-testing. say I have a method like this, public String myBigMethod() { String resultOne = moduleOneObject.someOperation(); String resultTwo = moduleTwoObject.someOtherOperation(resultOne); return resultTwo; } ( I have unit-tests written for someOperation() and someOtherOperation() seperately ) and this myBigMethod() kinda integrates ModuleOne and ModuleTwo by using them as above, then, is the method "myBigMethod()" still considered as a "unit" ? Should I be writing a test for this "myBigMethod()" ? Say I have written a test for myBigMethod()... If testSomeOperation() fails, it would also result in testMyBigMethod() to fail... Now testMyBigMethod()'s failure might show a not-so-correct-location of the bug. One-Cause causing two tests to fail doesn't look so good to me. But donno if there's any better way...? Is there ? Thanks !

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  • Failed to sum splited text

    - by user1784753
    I have a problem when summing all of bx3.text to t2.text. first I split bx3.text with space private void total() { string[] ps = bx3.Text.Split(new string[] {" "}, StringSplitOptions.None ); t2.Text = ps.Select(x => Convert.ToInt32(x)).Sum().ToString(); } I did try with t2.text = ps[1] and the number showed was correct. but when i try to sum it all, I got error "Input string was not in a correct format" on (x = Convert.ToInt32(x)) bx3.text is full of user-input number separated by single space " "

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  • Which character is first among 4 characters in c++

    - by Ashiqur Rahman
    In my project I take a string from user and then I need to check if vowels a, e, I, O, U are present. If so, I have to find out which one comes first in the string and which one comes next after that. For example, if a user gave input something like this: char expr[] = "this is for something real"; I comes first, then I again, then O and so on. I checked whether the characters are in the string or not using strchr(expr,'character here'). To find which character comes first, I find the index of each character using const char *ptr = strchr(expr, characters here); if(ptr) { int index = ptr - expr; } After that I check which index is bigger. But this is very long process. Is there a smarter way to do this?

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  • Creating methods with infinite overloads ? (.NET)

    - by MarceloRamires
    In C# you can do this: foo = string.Format("{0} {1} {2} {3} ...", "aa", "bb", "cc" ...); This method Format() accepts infinite parameters, being the first one how the string should be formatted and the rest are values to be put in the string. Today I've come to a situation where I had to get a set of strings and test them, then I remembered this language functionality, but I had no clue. After a few unsuccessful web searches, I've realised it would be more prudent to just get an array, which didn't make me quite satisfied. Q: How do I make a function that accepts infinite parameters? And how do I use it ?

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  • Java: Best approach to have a long list of variables needed all the time without consuming memory?

    - by evilReiko
    I wrote an abstract class to contain all rules of the application because I need them almost everywhere in my application. So most of what it contains is static final variables, something like this: public abstract class appRules { public static final boolean IS_DEV = true; public static final String CLOCK_SHORT_TIME_FORMAT = "something"; public static final String CLOCK_SHORT_DATE_FORMAT = "something else"; public static final String CLOCK_FULL_FORMAT = "other thing"; public static final int USERNAME_MIN = 5; public static final int USERNAME_MAX = 16; // etc. } The class is big and contains LOTS of such variables. My Question: Isn't setting static variables means these variables are floating in memory all the time? Do you suggest insteading of having an abstract class, I have a instantiable class with non-static variables (just public final), so I instantiate the class and use the variables only when I need them. Or is what am I doing is completely wrong approach and you suggest something else?

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  • using an encrypted web.config file

    - by regy
    My aim is to make the web.config not readable by external users, but my application should be able to access it. Is there any way to do this??? I have tried the following way, but how to set the application to use string instead of web.config??? I want to encrypt my web.config file so that others do not open the file using any editor like notepad. But my application should be able to use the same web.config file. I could encrypt the web.config file and decrypt it inside the application and I saved the entire web.config to a string file. Now I want to use this string variable instead of web.config(now in encrypted form, which cannot be accessed by the application).

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  • Send JSON date to WCF service

    - by user1394569
    I want to post json object to my WCF service My only problem is his date property. I get the date from an jquery datepicker and i want to get it in my service as c# datetime. My service: namespace Employee { [ServiceContract] public interface IService1 { [OperationContract] [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)] bool UpdateEmployee(Employee Employee); } } And this is Employee: [DataContract] public class Employee { [DataMember] public string Name { get; set; } [DataMember] public string Department { get; set; } [DataMember] public int Salary { get; set; } [DataMember] public DateTime Hired { get; set; } } All the other properties work fine. I just need to convert my date string to json date.

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  • "An access violation (Segmentation Fault) raised in your program."

    - by Mark
    My C++ program compiles and works up until I call this function from main(): int uword(){fstream infile("numbers.txt"); fstream exfile("wordlist.txt"); string numb[numoflines]; string lines[numoflines]; number = 1; line = 1; for(int i=0;!infile.eof();++i) { getline (infile,number); numb[i] = number; getline (exfile,line); lines[i] = line; } infile.close(); exfile.close(); string yourword; Something here causes it to crash, in the debug it pops up with "An access violation (Segmentation Fault) raised in your program."

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  • Unix: Search for file contents

    - by Svish
    I find the find . -name "some-file" command very useful to list all files matching some file name in a folder. Is there anything similar I can use to list all files that contains string? If you needed to find all files in a directory that had a certain string of text in it, what would you use?

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  • Feedback + Bad output

    - by user1770094
    So I've got an assignment I think I'm more or less done with, but there is something which is messing up the output badly somewhere down the line, or even the calculation, and I don't see where the problem is. The assignment is to make a game in which a certain ammount of players run up through a tunnel towards a spot,where they will stop and spin around it,and then their dizziness is supposed to make them randomly either progress towards goal or regress back towards start.And each time they get another spot closer to goal,they get another "marking",and it goes on like this until one of them reaches goal. The program includes three files: one main.cpp,one header file and another cpp file. The header file: #ifndef COMPETITOR_H #define COMPETITOR_H #include <string> using namespace std; class Competitor { public: void setName(); string getName(); void spin(); void move(); int checkScore(); void printResult(); private: string name; int direction; int markedSpots; }; #endif // COMPETITOR_H The second cpp file: #include <iostream> #include <string> #include <cstdlib> #include <ctime> #include "Competitor.h" using namespace std; void Competitor::setName() { cin>>name; } string Competitor::getName() { return name; } void Competitor::spin() { srand(time(NULL)); direction = rand()%1+0; } void Competitor::move() { if(direction == 1) { markedSpots++; } else if(direction == 0 && markedSpots != 0) { markedSpots--; } } int Competitor::checkScore() { return markedSpots; } void Competitor::printResult() { if(direction == 1) { cout<<" is heading towards goal and has currently "<<markedSpots<<" markings."; } else if(direction == 0) { cout<<"\n"<<getName()<<" is heading towards start and has currently "<<markedSpots<<" markings."; } } The main cpp file: #include <iostream> #include <string> #include <cstdlib> #include <ctime> #include "Competitor.h" using namespace std; void inputAndSetNames(Competitor comps[],int nrOfComps); void makeTwist(Competitor comps[],int nrOfComps); void makeMove(Competitor comps[],int nrOfComps); void showAll(Competitor comps[],int nrOfComps); int winner(Competitor comps[],int nrOfComps, int nrOfTwistPlaces); int main() { int nrOfTwistPlaces; int nrOfComps; int noWinner = -1; int laps = 0; cout<<"How many spinning places should there be? "; cin>>nrOfTwistPlaces; cout<<"How many competitors should there be? "; cin>>nrOfComps; Competitor * comps = new Competitor[nrOfComps]; inputAndSetNames(comps, nrOfComps); do { laps++; cout<<"\nSpin "<<laps<<":"; makeTwist(comps, nrOfComps); makeMove(comps, nrOfComps); showAll(comps, nrOfComps); }while(noWinner == -1); delete [] comps; return 0; } void inputAndSetNames(Competitor comps[],int nrOfComps) { cout<<"Type in the names of the "<<nrOfComps<<" competitors:\n"; for(int i=0;i<nrOfComps;i++) { comps[i].setName(); } cout<<"\n"; } void makeTwist(Competitor comps[],int nrOfComps) { for(int i=0;i<nrOfComps;i++) { comps[i].spin(); } } void makeMove(Competitor comps[],int nrOfComps) { for(int i=0;i<nrOfComps;i++) { comps[i].move(); } } void showAll(Competitor comps[],int nrOfComps) { for(int i=0;i<nrOfComps;i++) { comps[i].printResult(); } cout<<"\n\n"; system("pause"); } int winner(Competitor comps[],int nrOfComps, int nrOfTwistPlaces) { int end = 0; int score = 0; for(int i=0;i<nrOfComps;i++) { score = comps[i].checkScore(); if(score == nrOfTwistPlaces) { end = 1; } else end = -1; } return end; } I'd be grateful if you would point out other mistakes if you see any.Thanks in advance.

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  • Whether to check for null

    - by coffeeaddict
    I know that you should always check incoming params to a method for null. But what if I have this scenario with a try/catch referring to a local variable. Do I really need to check for null below? Because it's gonna catch it anyway if it's null and the next line of code tries to use the refundResponse variable: public string DoRefund(...) { try { ...... string refundTransactionID = string.Empty; ...... RefundTransactionResponseType refundResponse = transaction.DoRefund(...); if (refundResponse != null) refundTransactionID = refundResponse.RefundTransactionID; ..... } catch (Exception ex) { LogError(ex); return ex.ToString(); } }

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  • Can anybody explain the working of following code...?

    - by Siddhi
    Can anybody explain the working of following code...? interface myInterface{} public class Main { public static void main(String[] args) { System.out.println(new myInterface(){public String toString(){return "myInterfacetoString";}}); System.out.println(new myInterface(){public String myFunction(){return "myInterfacemyFunction";}}); } } Output is... myInterfacetoString primitivedemo.Main$2@9304b1 All answers saying that myInterface in println() statement is anonymous class. But as I already declared it as an interface, why does it allow me to create anonymous class of same name....? again...if these are anonymous classes then class main should allow me to give any name to these anonymous classes..But if try to do so..I'm getting compilation error

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  • Use this. to access internal class members?

    - by Sam
    On the internet I see a lot of code which uses this. to access local members of a class, like this: private String _whatever; public String Whatever { get { return this._whatever; } set { this._whatever = value; } } public void DoSomething() { String s = this.Whatever; this.DoSomething(); } (don't expect the code to do something sensible. I just wanted to show a few different uses for "this.") I wonder why to do this? To add more clarity to the source? Or is it just a waste of space?

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  • Write a tree class in Java where each level has a unique object type

    - by user479576
    I need to write a tree class in Java where each level has a unique object type. The way it is written below does not take advantage of generics and causes alot of duplicate code. Is there a way to write this with Generics ? public class NodeB { private String nodeValue; //private List<NodeB> childNodes; // constructors // getters/setters } public class NodeA { private String value; private List<NodeB> childNodes; // constructors // getters/setters } public class Tree { private String value; private List<NodeA> childNodes; // constructors // tree methods }

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  • Best way to integrate searching with pagination

    - by Vijay Choudhary
    I have a web application build on cakephp 2.x. I have integrated pagination on my data. Now i want to implement searching on that data also, and pagination should work according to search result. Now my question is: Should i use a form to post my search string. If so, then which method should i use, GET or POST. OR, should i use javascript window.location method, and append the search string to it. If we use this method then search string can append more than once to url. Or any other best way to implement this. Can anybody give the best solution for this as it is a common task for each application to have.

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