Search Results

Search found 79791 results on 3192 pages for 'design problem'.

Page 49/3192 | < Previous Page | 45 46 47 48 49 50 51 52 53 54 55 56  | Next Page >

• Python class design - Splitting up big classes into multiple ones to group functionality

  - by Ivo Wetzel

  OK I've got 2 really big classes 1k lines each that I currently have split up into multiple ones. They then get recombined using multiple inheritance. Now I'm wondering, if there is any cleaner/better more pythonic way of doing this. Completely factoring them out would result in endless amounts of self.otherself.do_something calls, which I don't think is the way it should be done. To make things clear here's what it currently looks like: from gui_events import GUIEvents # event handlers from gui_helpers import GUIHelpers # helper methods that don't directly modify the GUI # GUI.py class GUI(gtk.Window, GUIEvents, GUIHelpers): # general stuff here stuff here One problem that is result of this is Pylint complaining giving me trillions of "init not called" / "undefined attribute" / "attribute accessed before definition" warnings.

  Read the article

• Signals and threads - good or bad design decision?

  - by Jens

  I have to write a program that performs highly computationally intensive calculations. The program might run for several days. The calculation can be separated easily in different threads without the need of shared data. I want a GUI or a web service that informs me of the current status. My current design uses BOOST::signals2 and BOOST::thread. It compiles and so far works as expected. If a thread finished one iteration and new data is available it calls a signal which is connected to a slot in the GUI class. My question(s): Is this combination of signals and threads a wise idea? I another forum somebody advised someone else not to "go down this road". Are there potential deadly pitfalls nearby that I failed to see? Is my expectation realistic that it will be "easy" to use my GUI class to provide a web interface or a QT, a VTK or a whatever window? Is there a more clever alternative (like other boost libs) that I overlooked? following code compiles with g++ -Wall -o main -lboost_thread-mt <filename>.cpp code follows: #include <boost/signals2.hpp> #include <boost/thread.hpp> #include <boost/bind.hpp> #include <iostream> #include <iterator> #include <string> using std::cout; using std::cerr; using std::string; /** * Called when a CalcThread finished a new bunch of data. */ boost::signals2::signal<void(string)> signal_new_data; /** * The whole data will be stored here. */ class DataCollector { typedef boost::mutex::scoped_lock scoped_lock; boost::mutex mutex; public: /** * Called by CalcThreads call the to store their data. */ void push(const string &s, const string &caller_name) { scoped_lock lock(mutex); _data.push_back(s); signal_new_data(caller_name); } /** * Output everything collected so far to std::out. */ void out() { typedef std::vector<string>::const_iterator iter; for (iter i = _data.begin(); i != _data.end(); ++i) cout << " " << *i << "\n"; } private: std::vector<string> _data; }; /** * Several of those can calculate stuff. * No data sharing needed. */ struct CalcThread { CalcThread(string name, DataCollector &datcol) : _name(name), _datcol(datcol) { } /** * Expensive algorithms will be implemented here. * @param num_results how many data sets are to be calculated by this thread. */ void operator()(int num_results) { for (int i = 1; i <= num_results; ++i) { std::stringstream s; s << "["; if (i == num_results) s << "LAST "; s << "DATA " << i << " from thread " << _name << "]"; _datcol.push(s.str(), _name); } } private: string _name; DataCollector &_datcol; }; /** * Maybe some VTK or QT or both will be used someday. */ class GuiClass { public: GuiClass(DataCollector &datcol) : _datcol(datcol) { } /** * If the GUI wants to present or at least count the data collected so far. * @param caller_name is the name of the thread whose data is new. */ void slot_data_changed(string caller_name) const { cout << "GuiClass knows: new data from " << caller_name << std::endl; } private: DataCollector & _datcol; }; int main() { DataCollector datcol; GuiClass mc(datcol); signal_new_data.connect(boost::bind(&GuiClass::slot_data_changed, &mc, _1)); CalcThread r1("A", datcol), r2("B", datcol), r3("C", datcol), r4("D", datcol), r5("E", datcol); boost::thread t1(r1, 3); boost::thread t2(r2, 1); boost::thread t3(r3, 2); boost::thread t4(r4, 2); boost::thread t5(r5, 3); t1.join(); t2.join(); t3.join(); t4.join(); t5.join(); datcol.out(); cout << "\nDone" << std::endl; return 0; }

  Read the article

• Learning OOP Design

  - by waiwai933

  I've read Head First Java, and I understand how OOP works. Here's my problem: I'm a PHP programmer, and while I've used OOP in PHP, I'm having trouble figuring out what should be an object and what methods to give it. For example, let's say I have a app that allows people to log in and edit a document. Why should the document be an object if there will ever only be one instance? Should I give the deleteDocument() method to the document object or the admin object? The document is the one being deleted, but the admin is the one performing the action. So my real question is, coming from a procedural background, how do I figure out what should be objects and what should have what methods?

  Read the article

• Design question what pattern to use

  - by rahul

  Problem Description: We have a requirement of storing the snapshot of an entity temporarily in the database untill a certain period of time untill all the processes to approve the data are completed. Once all approvals are completed the data shall be permanantly persisted into the actual table. Example: 1) Consider an entity called "User". One way to create the user is through the "Create Account Process". 2) The "Create Account Process" shall capture all the information of the User and store it in a temporary table in the database. 3) The data shall be used by the "Account Approval Process" to run its verification process. 4. After all the verification is completed successfully, the User data shall be persisted to the actual table. Question: Where to store the user data entered during "Create Account Process". Additionally, User data should be editable till the verification process is complete.

  Read the article

• Web-design / UI advice

  - by Damian

  I'm working on a website on a Fmylife style. Now the homepage is the page showing the list of the latest posts. But I think there is a problem with that: The most "interesting" page is the one showing the top posts of the last days, but that page has very few visits compared to the main page. I suppose that's only because the main page is the "default" one. So, I've been thinking of making a home page that shows no posts (only one at the top of the page) but 4 big buttons showing the visitors what are the options to browse the content. But I'm also afraid that most users will not click any option and leave the site having seen no posts. So I don't know what to do. Obviously I have no idea of what will be good from a usability/efficiency point of view. Maybe a mix of the two options will be the best, but I don't know how to mix them. Any advice or idea will be greatly appreciated. The current home page looks like this: http://soquestion.latest.secretsapp.appspot.com/latest The new home page would look like this: http://soquestion.latest.secretsapp.appspot.com/

  Read the article

• database design to speed up hibernate querying of large dataset

  - by paddydub

  I currently have the below tables representing a bus network mapped in hibernate, accessed from a Spring MVC based bus route planner I'm trying to make my route planner application perform faster, I load all the above tables into Lists to perform the route planner logic. I would appreciate if anyone has any ideas of how to speed my performace Or any suggestions of another method to approach this problem of handling a large set of data Coordinate Connections Table (INT,INT,INT)( Containing 50,000 Coordinate Connections) ID, FROMCOORDID, TOCOORDID 1 1 2 2 1 17 3 1 63 4 1 64 5 1 65 6 1 95 Coordinate Table (INT,DECIMAL, DECIMAL) (Containing 4700 Coordinates) ID , LAT, LNG 0 59.352669 -7.264341 1 59.352669 -7.264341 2 59.350012 -7.260653 3 59.337585 -7.189798 4 59.339221 -7.193582 5 59.341408 -7.205888 Bus Stop Table (INT, INT, INT)(Containing 15000 Stops) StopID RouteID COORDINATEID 1000100001 100 17 1000100002 100 18 1000100003 100 19 1000100004 100 20 1000100005 100 21 1000100006 100 22 1000100007 100 23 This is how long it takes to load all the data from each table: stop.findAll = 148ms, stops.size: 15670 Hibernate: select coordinate0_.COORDINATEID as COORDINA1_2_, coordinate0_.LAT as LAT2_, coordinate0_.LNG as LNG2_ from COORDINATES coordinate0_ coord.findAll = 51ms , coordinates.size: 4704 Hibernate: select coordconne0_.COORDCONNECTIONID as COORDCON1_3_, coordconne0_.DISTANCE as DISTANCE3_, coordconne0_.FROMCOORDID as FROMCOOR3_3_, coordconne0_.TOCOORDID as TOCOORDID3_ from COORDCONNECTIONS coordconne0_ coordinateConnectionDao.findAll = 238ms ; coordConnectioninates.size:48132 Hibernate Annotations @Entity @Table(name = "STOPS") public class Stop implements Serializable { @Id @GeneratedValue @Column(name = "COORDINATEID") private Integer CoordinateID; @Column(name = "LAT") private double latitude; @Column(name = "LNG") private double longitude; } @Table(name = "COORDINATES") public class Coordinate { @Id @GeneratedValue @Column(name = "COORDINATEID") private Integer CoordinateID; @Column(name = "LAT") private double latitude; @Column(name = "LNG") private double longitude; } @Entity @Table(name = "COORDCONNECTIONS") public class CoordConnection { @Id @GeneratedValue @Column(name = "COORDCONNECTIONID") private Integer CoordinateID; /** * From Coordinate_id value */ @Column(name = "FROMCOORDID", nullable = false) private int fromCoordID; /** * To Coordinate_id value */ @Column(name = "TOCOORDID", nullable = false) private int toCoordID; //private Coordinate toCoordID; }

  Read the article

• Database design grouping contacts by lists and companies

  - by Serge

  Hi, I'm wondering what would be the best way to group contacts by their company. Right now a user can group their contacts by custom created lists but I'd like to be able to group contacts by their company as well as store the contact's position (i.e. Project Manager of XYZ company). Database wise this is what I have for grouping contacts into lists contact [id_contact] [int] PK NOT NULL, [lastName] [varchar] (128) NULL, [firstName] [varchar] (128) NULL, ...... contact_list [id_contact] [int] FK, [id_list] [int] FK, list [id_list] [int] PK [id_user] [int] FK [list_name] [varchar] (128) NOT NULL, [description] [TEXT] NULL Should I implement something similar for grouping contacts by company? If so how would I store the contact's position in that company and how can I prevent data corruption if a user modifies a contact's company name. For instance John Doe changed companies but the other co-workers are still in the old company. I doubt that will happen often (might not even happen at all) but better be safe than sorry. I'm also keeping an audit trail so in a way the contact would still need to be linked to the old company as well as the new one but without confusing what company he's actually working at the moment. I hope that made sense... Has anyone encountered such a problem? UPDATE Would something like this make sense contact_company [id_contact_company] [int] PK [id_contact] [int] FK [id_company] [int] FK [contact_title] [varchar] (128) company [id_company] [int] PK NOT NULL, [company_name] [varchar] (128) NULL, [company_description] [varchar] (300) NULL, [created_date] [datetime] NOT NULL This way a contact can work for more than one company and contacts can be grouped by companies

  Read the article

• Design pattern to use instead of multiple inheritance

  - by mizipzor

  Coming from a C++ background, Im used to multiple inheritance. I like the feeling of a shotgun squarely aimed at my foot. Nowadays, I work more in C# and Java, where you can only inherit one baseclass but implement any number of interfaces (did I get the terminology right?). For example, lets consider two classes that implement a common interface but different (yet required) baseclasses: public class TypeA : CustomButtonUserControl, IMagician { public void DoMagic() { // ... } } public class TypeB : CustomTextUserControl, IMagician { public void DoMagic() { // ... } } Both classes are UserControls so I cant substitute the base class. Both needs to implement the DoMagic function. My problem now is that both implementations of the function are identical. And I hate copy-and-paste code. The (possible) solutions: I naturally want TypeA and TypeB to share a common baseclass, where I can write that identical function definition just once. However, due to having the limit of just one baseclass, I cant find a place along the hierarchy where it fits. One could also try to implement a sort of composite pattern. Putting the DoMagic function in a separate helper class, but the function here needs (and modifies) quite a lot of internal variables/fields. Sending them all as (reference) parameters would just look bad. My gut tells me that the adapter pattern could have a place here, some class to convert between the two when necessery. But it also feels hacky. I tagged this with language-agnostic since it applies to all languages that use this one-baseclass-many-interfaces approach. Also, please point out if I seem to have misunderstood any of the patterns I named. In C++ I would just make a class with the private fields, that function implementation and put it in the inheritance list. Whats the proper approach in C#/Java and the like?

  Read the article

• Hibernate design to speed up querying of large dataset

  - by paddydub

  I currently have the below tables representing a bus network mapped in hibernate, accessed from a Spring MVC based bus route planner I'm trying to make my route planner application perform faster, I load all the above tables into Lists to perform the route planner logic. I would appreciate if anyone has any ideas of how to speed my performace Or any suggestions of another method to approach this problem of handling a large set of data Coordinate Connections Table (INT,INT,INT, DOUBLE)( Containing 50,000 Coordinate Connections) ID, FROMCOORDID, TOCOORDID, DISTANCE 1 1 2 0.383657 2 1 17 0.173201 3 1 63 0.258781 4 1 64 0.013726 5 1 65 0.459829 6 1 95 0.458769 Coordinate Table (INT,DECIMAL, DECIMAL) (Containing 4700 Coordinates) ID , LAT, LNG 0 59.352669 -7.264341 1 59.352669 -7.264341 2 59.350012 -7.260653 3 59.337585 -7.189798 4 59.339221 -7.193582 5 59.341408 -7.205888 Bus Stop Table (INT, INT, INT)(Containing 15000 Stops) StopID RouteID COORDINATEID 1000100001 100 17 1000100002 100 18 1000100003 100 19 1000100004 100 20 1000100005 100 21 1000100006 100 22 1000100007 100 23 This is how long it takes to load all the data from each table: stop.findAll = 148ms, stops.size: 15670 Hibernate: select coordinate0_.COORDINATEID as COORDINA1_2_, coordinate0_.LAT as LAT2_, coordinate0_.LNG as LNG2_ from COORDINATES coordinate0_ coord.findAll = 51ms , coordinates.size: 4704 Hibernate: select coordconne0_.COORDCONNECTIONID as COORDCON1_3_, coordconne0_.DISTANCE as DISTANCE3_, coordconne0_.FROMCOORDID as FROMCOOR3_3_, coordconne0_.TOCOORDID as TOCOORDID3_ from COORDCONNECTIONS coordconne0_ coordinateConnectionDao.findAll = 238ms ; coordConnectioninates.size:48132 Hibernate Annotations @Entity @Table(name = "STOPS") public class Stop implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "STOPID") private int stopID; @Column(name = "ROUTEID", nullable = false) private int routeID; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "COORDINATEID", nullable = false) private Coordinate coordinate; } @Table(name = "COORDINATES") public class Coordinate { @Id @GeneratedValue @Column(name = "COORDINATEID") private int CoordinateID; @Column(name = "LAT") private double latitude; @Column(name = "LNG") private double longitude; } @Entity @Table(name = "COORDCONNECTIONS") public class CoordConnection { @Id @GeneratedValue @Column(name = "COORDCONNECTIONID") private int CoordinateID; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "FROMCOORDID", nullable = false) private Coordinate fromCoordID; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "TOCOORDID", nullable = false) private Coordinate toCoordID; @Column(name = "DISTANCE", nullable = false) private double distance; }

  Read the article

• Design pattern to integrate Rails with a Comet server

  - by empire29

  I have a Ruby on Rails (2.3.5) application and an APE (Ajax Push Engine) server. When records are created within the Rails application, i need to push the new record out on applicable channels to the APE server. Records can be created in the rails app by the traditional path through the controller's create action, or it can be created by several event machines that are constantly monitoring various inputstream and creating records when they see data that meets a certain criteria. It seems to me that the best/right place to put the code that pushes the data out to the APE server (which in turn pushes it out to the clients) is in the Model's after_create hook (since not all record creations will flow through the controller's create action). The final caveat is I want to push a piece of formatted HTML out to the APE server (rather than a JSON representation of the data). The reason I want to do this is 1) I already have logic to produce the desired layout in existing partials 2) I don't want to create a javascript implementation of the partials (javascript that takes a JSON object and creates all the HTML around it for presentation). This would quickly become a maintenance nightmare. The problem with this is it would require "rendering" partials from within the Model (which im having trouble doing anyhow because they don't seem to have access to Helpers when they're rendered in this manner). Anyhow - Just wondering what the right way to go about organizing all of this is. Thanks

  Read the article

• Advice on Linq to SQL mapping object design

  - by fearofawhackplanet

  I hope the title and following text are clear, I'm not very familiar with the correct terms so please correct me if I get anything wrong. I'm using Linq ORM for the first time and am wondering how to address the following. Say I have two DB tables: User ---- Id Name Phone ----- Id UserId Model The Linq code generator produces a bunch of entity classes. I then write my own classes and interfaces which wrap these Linq classes: class DatabaseUser : IUser { public DatabaseUser(User user) { _user = user; } public Guid Id { get { return _user.Id; } } ... etc } so far so good. Now it's easy enough to find a users phones from Phones.Where(p => p.User = user) but surely comsumers of the API shouldn't need to be writing their own Linq queries to get at data, so I should wrap this query in a function or property somewhere. So the question is, in this example, would you add a Phones property to IUser or not? In other words, should my interface specifically be modelling my database objects (in which case Phones doesn't belong in IUser), or are they actually simply providing a set of functions and properties which are conceptually associated with a User (in which case it does)? There seems drawbacks to both views, but I'm wondering if there is a standard approach to the problem. Or just any general words of wisdom you could share. My first thought was to use extension methods but in fact that doesn't work in this case.

  Read the article

• problem in display image with loadDataWithBaseURL() in Android

  - by Addy

  Hi. In my Application, I display data in webview but it can't display the images in the webview. I used loadDatawithBaseURL() method. This is my code.. webview.loadDataWithBaseURL("file:///059600656X/", data, "text/html", "UTF-8", "about:blank"); // here data is a string object which contain html parsing data. I think it cant find the images in given directory. Can Anybody help me?

  Read the article

• Xuggler errors as soon as you import git

  - by user3241507

  I downloaded the Git straight into Eclipse for Xuggler (Here is the git). But as soon as it loads, there are so many errors I don't know what to do. Most of the errors are "cannot be resolved" type errors. Description Resource Path Location Type The import org.junit cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 22 Java Problem The import junit cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 28 Java Problem TestCase cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 30 Java Problem The import org.slf4j cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 23 Java Problem The import org.slf4j cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 24 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 94 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 97 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 102 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 103 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 86 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 89 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 90 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 93 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com /xuggle/ferry line 114 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 120 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 125 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 126 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 106 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 107 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 110 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 111 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 53 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 49 Java Problem Ignore cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 57 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 56 Java Problem Before cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 37 Java Problem LoggerFactory cannot be resolved AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 32 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 44 Java Problem The method getName() is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 40 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 81 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 75 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 85 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 82 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 64 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 61 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 72 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 69 Java Problem NameAwareTestClassRunner cannot be resolved BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 44 Java Problem The method assertTrue(String, boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 167 Java Problem The method debug(String, int, String) in the type Logger is not applicable for the arguments (String, int) AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 166 Java Problem The method fail(String) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 163 Java Problem After cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 47 Java Problem NameAwareTestClassRunner cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 35 Java Problem The method debug(String, int, String) in the type Logger is not applicable for the arguments (String) AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 162 Java Problem Test cannot be resolved to a type AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 135 Java Problem Before cannot be resolved to a type BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 41 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 131 Java Problem LoggerFactory cannot be resolved BufferTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 38 Java Problem The method assertTrue(boolean) is undefined for the type AtomicIntegerTest AtomicIntegerTest.java /xuggle-xuggler-main/test/src/com/xuggle/ferry line 130 Java Problem The import org.junit cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 22 Java Problem The import org.slf4j cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 23 Java Problem The import org.slf4j cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test /src/com/xuggle/xuggler line 24 Java Problem The import junit cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 31 Java Problem TestCase cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 33 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 35 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 82 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 80 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 89 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 84 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 94 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 93 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 99 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 96 Java Problem Before cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 37 Java Problem LoggerFactory cannot be resolved AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 35 Java Problem The method getName() is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 40 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 40 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 60 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 43 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 67 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 62 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 157 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 161 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 154 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 155 Java Problem The method assertEquals(int, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 172 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 173 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 168 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 171 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 124 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 129 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 117 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 119 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 145 Java Problem Logger cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 150 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 141 Java Problem The method assertTrue(String, boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 143 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 216 Java Problem The method assertEquals(IBuffer.Type, IBuffer.Type) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 212 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 208 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 204 Java Problem The method assertEquals(IBuffer.Type, IBuffer.Type) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 218 Java Problem The method assertEquals(int, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 187 Java Problem The method assertTrue(boolean) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 186 Java Problem The method assertNotNull(IAudioSamples) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 183 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 176 Java Problem Test cannot be resolved to a type AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 197 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 192 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 191 Java Problem The method assertEquals(long, long) is undefined for the type AudioSamplesTest AudioSamplesTest.java /xuggle-xuggler-main/test/src/com/xuggle/xuggler line 188 Java Problem For a school project, I would like to build a simple live video stream program (final year in high school) like skype, except not as complicated. Can anyone help me solve these errors? or Is there another platform I can use that would be better/easier?

  Read the article

• catDog string problem at Codingbat.com [closed]

  - by stanny110

  public boolean catDog(String str) { int catAnswer = 0; int dogAnswer = 0; int cat_Count = 0; int dog_Count = 0; for (int i=0; i< str.length()-1; i++) { String sub = str.substring(i, i+2); if ((sub.equals("cat"))) cat_Count++; if ((sub.equals("dog"))) dog_Count++; catAnswer = cat_Count; dogAnswer = dog_Count; } //end for if(dogAnswer == catAnswer ) {return true;} // else return (dogAnswer != catAnswer) ;

  Read the article

• Eclipse Android Mac 10.4 problem, dyld: Symbol not found: _open$UNIX2003

  - by Manic

  Hello I have just set up the Eclipse Android SDK environment. I tried creating a basic HelloWorld app by following this page http://developer.android.com/guide/tutorials/hello-world.html As soon as i set up the project i get get this error in the console [2010-06-09 23:12:22 - Helloworld] dyld: Symbol not found: _open$UNIX2003 [2010-06-09 23:12:22 - Helloworld] Referenced from: /usr/lib/android-sdk-mac_86/platforms/android-3/tools/aapt [2010-06-09 23:12:22 - Helloworld] Expected in: /usr/lib/libSystem.B.dylib [2010-06-09 23:12:22 - Helloworld] Is it something to do do with my MacOS version ? plz hlp ! :S

  Read the article

• Three coworkers Riddle Problem

  - by John S

  This isn't homework, I've got a solution, however it doesn't protect against cheaters. Three coworkers would like to know their average salary. However, they are self-conscious and don't want to tell each other their own salaries, for fear of either being ridiculed or getting their houses robbed. How can they find their average salary, without disclosing their own salaries? Now, a solution that requires the last person to tell the group the sum isn't allowed because that person could cheat. Solution: http://karavi.wordpress.com/2009/12/18/solutions-to-wu%E2%80%99s-puzzles-and-riddles-ghetto-encryption-2-medium/

  Read the article

• Problem in HQL query

  - by Rupeshit

  I written a query in my sql like this: "select * from table_name order by col_name = 101 desc " Which is working perfectly fine in mysql but when I tried to convert this query into HQl query then it is throwing an exception.So can anyone suggest me that how to write HQL query for the above SQL query.

  Read the article

• SQL Server to PostgreSQL - Migration and design concerns

  - by youwhut

  Currently migrating from SQL Server to PostgreSQL and attempting to improve a couple of key areas on the way: I have an Articles table: CREATE TABLE [dbo].[Articles]( [server_ref] [int] NOT NULL, [article_ref] [int] NOT NULL, [article_title] [varchar](400) NOT NULL, [category_ref] [int] NOT NULL, [size] [bigint] NOT NULL ) Data (comma delimited text files) is dumped on the import server by ~500 (out of ~1000) servers on a daily basis. Importing: Indexes are disabled on the Articles table. For each dumped text file Data is BULK copied to a temporary table. Temporary table is updated. Old data for the server is dropped from the Articles table. Temporary table data is copied to Articles table. Temporary table dropped. Once this process is complete for all servers the indexes are built and the new database is copied to a web server. I am reasonably happy with this process but there is always room for improvement as I strive for a real-time (haha!) system. Is what I am doing correct? The Articles table contains ~500 million records and is expected to grow. Searching across this table is okay but could be better. i.e. SELECT * FROM Articles WHERE server_ref=33 AND article_title LIKE '%criteria%' has been satisfactory but I want to improve the speed of searching. Obviously the "LIKE" is my problem here. Suggestions? SELECT * FROM Articles WHERE article_title LIKE '%criteria%' is horrendous. Partitioning is a feature of SQL Server Enterprise but $$$ which is one of the many exciting prospects of PostgreSQL. What performance hit will be incurred for the import process (drop data, insert data) and building indexes? Will the database grow by a huge amount? The database currently stands at 200 GB and will grow. Copying this across the network is not ideal but it works. I am putting thought into changing the hardware structure of the system. The thought process of having an import server and a web server is so that the import server can do the dirty work (WITHOUT indexes) while the web server (WITH indexes) can present reports. Maybe reducing the system down to one server would work to skip the copying across the network stage. This one server would have two versions of the database: one with the indexes for delivering reports and the other without for importing new data. The databases would swap daily. Thoughts? This is a fantastic system, and believe it or not there is some method to my madness by giving it a big shake up. UPDATE: I am not looking for help with relational databases, but hoping to bounce ideas around with data warehouse experts.

  Read the article

• Problem with Spring @Configuration class

  - by easyrider

  Hi, i use class with @Configuration annotation to configure my spring application: @Configuration public class SpringConfiguration { @Value("${driver}") String driver; @Value("${url}") String url; @Value("${minIdle}") private int minIdle; // snipp .. @Bean(destroyMethod = "close") public DataSource dataSource() { DataSource dataSource = new DataSource(); dataSource.setDriverClassName(driver); dataSource.setUrl(url); dataSource.setUsername(user); dataSource.setPassword(password); dataSource.setMinIdle(minIdle); return dataSource; } and properties file in CLASSPATH driver=org.postgresql.Driver url=jdbc:postgresql:servicerepodb minIdle=1 I would like to get my DataSource configured object in my DAO class: ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringConfiguration.class); DataSource dataSource = ctx.getBean(DataSource.class); But i get the error: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private int de.hska.repo.configuration.SpringConfiguration.minIdle; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'int'; nested exception is **java.lang.NumberFormatException: For input string: "${minIdle}"** Caused by: java.lang.NumberFormatException: For input string: **"${minIdle}"** at java.lang.NumberFormatException.forInputString(**Unknown Source**) at java.lang.Integer.parseInt(Unknown Source) at java.lang.Integer.valueOf(Unknown Source) It worked with String properties (driver, url), but ${minIdle} (of type int) can't be resolved! Please help. Thanx in advance!

  Read the article

• Problem with numbers

  - by StolePopov

  I am given a number N, and i must add some numbers from the array V so that they wil be equal. V is consisting of numbers that are all powers of 3: N = 17 S = 0 V = 1 3 9 27 81 .. I should add numbers from V to N and S in order to make them equal. The solution to the example above is : 17 + 1 + 9 = 27, 27, 1 and 9 are taken from V, a number from V can be taken only once, and when taken it's removed from V. I tried sorting V and then adding the biggest numbers from V to S until S has reached N, but it fails on some tests when it's like: N = 7 S = 0 V = 1 3 9 27 So the solution will be: 7 + 3 = 9 + 1 In examples like this i need to add numbers both to N and S, and also select them so they become equal. Any idea of solving this ? Thanks.

  Read the article

• Is there a way to put relationships/contraints into CSS?

  - by hekevintran

  In every design tool or art principle I've heard of, relationships are a central theme. By relationships I mean the thing you can do in Adobe Illustrator to specify that the height of one shape is equal to half the height of another. You cannot express this information in CSS. CSS hard-codes all values. Using a language like LESS that allows variables and arithmetic you can get closer to relationships but it's still a CSS variant. This inability in my mind is the biggest problem with CSS. CSS is supposed to be a language that describes the visual component of a Web page but it ignores relationships and contraints, ideas that are at the core of art. How possible is it to imagine a new Web design language that can express relationships and contraints that can be implemented in JavaScript using the current CSS properties?

  Read the article

• java, swing, Gridlayout problem

  - by josh

  I have a panel with GridLayout But when I'm trying to run the program, only the first button out of 100 is shown. Futhermore, the rest appear only when I move the cursor over them. What's wrong with it? Here's the whole class(Life.CELLS=10 and CellButton is a class which extends JButton) public class MainLayout extends JFrame { public MainLayout() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(650, 750); setLayout(new FlowLayout()); //setResizable(false); final JPanel gridPanel = new JPanel(new GridLayout(Life.CELLS, Life.CELLS)); for (int i=0; i<Life.CELLS; i++) { for (int j=0; j<Life.CELLS; j++) { CellButton jb = new CellButton(i, j); jb.setPreferredSize(new Dimension(jb.getIcon().getIconHeight(), jb.getIcon().getIconWidth())); buttons[i][j] = jb; grid[i][j] = false; gridPanel.add(jb); } } add(gridPanel); } } This is code of CellButton package classes; import javax.swing.JButton; import javax.swing.ImageIcon; import javax.swing.JFrame; public class CellButton extends JButton { private int x; private int y; boolean alive; ImageIcon icon; boolean next; // icons for grids final ImageIcon dead = new ImageIcon(JFrame.class.getResource("/images/image1.gif")); final ImageIcon live = new ImageIcon(JFrame.class.getResource("/images/image2.gif")); public CellButton(int X, int Y) { super(); x = X; y = Y; alive = false; icon = dead; setIcon(icon); } public int getX() { return x; } public int getY() { return y; } public boolean isAlive() { return alive; } public void relive() { alive = true; icon = live; setIcon(icon); } public void die() { alive = false; icon = dead; setIcon(icon); } public void setNext(boolean n) { next = n; } public boolean getNext() { return next; } public ImageIcon getIcon() { return icon; } }

  Read the article

• $_GET encoding problem with cyrillic text

  - by T1000

  I'm trying this code (on my local web server) <?php echo 'the word is / ?????? ? '.$_GET['word']; ?> but I get corrupted result when enter ?word=????? the word is / ?????? ? ???? The document is saved as 'UTF-8 without BOM' and headers are also UTF-8. I have tried urlencode() and urldecode() but the effect was same. When upload it on web server, works fine...

  Read the article

• Subroutine & GoTo design

  - by sub

  I have a strange question concerning subroutines: As I'm creating a minimal language and I don't want to add high-level loops like while or for I was planning on just adding gotos to keep it Turing-Complete. Now I thought, eww - gotos - I wouldn't want to program in that language if I had to use gotos so often. So I thought about adding subroutines instead. I see the difference as the following: gotos Go to (captain obvious) a previously defined point and continue executing the program from there. Leads to hardly understandable and buggy code, I think that's a fact. subroutines Similiar: You define their starting point somewhere, as you call them the program jumps there - but the subroutine can go back to the point it was called from with return. Okay. Why didn't I just add the more function-like, nice looking subroutines? Because: In order to make return work if I call subroutines from within subroutines from within other subroutines, I'd have to use a stack containing the point where the currently running subroutine came from at top. That would then mean that I would, if I create loops using the subroutines, end up with an extremely memory-eating, overflowing stack with return locations. Not good. Don't think of my subroutines as functions. They are just gotos that return to the point they were called from, they don't actually give back values like the return x; statement in nearly all today's languages. Now to my actual questions: How can I solve the above problem with the stack overflow on loops with subroutines? Do I have to add a separate goto language construct without the return option? Assembler doesn't have loops but as I have seen myJumpPoint:, jnz, jz, retn. That means to me that there must also be a stack containing all the return locations. Am I right with that? What about long running loops then? Don't they overflow the stack/eat memory then? Am I getting the retn symbol in assembler totally wrong? If yes, please explain it to me.

  Read the article

• How to improve Algorithmic Programming Solving skill? [closed]

  - by gaurav

  Possible Duplicate: How can I improve my problem-solving ability? How do you improve your problem solving skills? Should I learn design patterns or algorithms to improve my logical thinking skills? What to do when you're faced with a problem that you can't solve quickly? Are there non-programming related activities akin to solving programming problems? I am a computer engineering graduate. I have studied programming since three years. I am good in coding and programming. I have been trying to compete in algorithmic competitions on sites such as topcoder,spoj since one and a half year, but I am still unable to solve problems other than too easy problems. I have learned from people that it takes practice to solve such problems. I try to solve those problems but sometimes I am unable to understand and even if I do understand I am unable to think of a good algorithm for solving it. Even if I solve I get Wrong answer and I am unable to figure out what is the problem with my code as it works on samples given on the sites but fails on test cases which they do not provide. I really want to solve those problems and become good in algorithms. I have read books for learning algorithms like Introduction to algorithms by CLRS,practicing programming questions. I have gone through some questions but they don't answer this question. I have seen the questions which are said duplicates but those questions focus on overall programming, but I am asking for algorithm related programming, basically for competing in programming which involve solving a problem statement then online judge will automatically evaluate it, such type of programming is quite different from the type of programming these questions discuss.

  Read the article

< Previous Page | 45 46 47 48 49 50 51 52 53 54 55 56  | Next Page >