Search Results

Search found 11672 results on 467 pages for 'formal methods'.

Page 221/467 | < Previous Page | 217 218 219 220 221 222 223 224 225 226 227 228  | Next Page >

• Catch requests to non-existent classes (not autoload)

  - by Spot

  Is there a manner in which to catch requests to a class which does not exist. I'm looking for something exactly like __call() and __static(), but for classes as opposed to methods in a class. I am not talking about autoloading. I need to be able to interrupt the request and reroute it. Ideas?

  Read the article

• Java: Prepare a statement without a connection

  - by r3zn1k

  I'm trying to generate some sql files in my java application. The application will not execute any sql statements, just generate a file with sql statements and save it. I'd like to use the java.sql.PreparedStatement to create my statements so that i don't have to validate every string etc. with my own methods. Is there a way to use the PreparedStatement without the calling java.sql.Connection.prepareStatement(String) function, because I don't have a java.sql.Connection?

  Read the article

• Zend_Db_Select where() and Zend_Db_Adapter quoteInto()

  - by Chris

  Are Zend_Db_Select's where() method, when including the optional value to quite into, and Zend_Db_Adapte's quoteInto() methods basically the same as far as escaping SQL? In other words, are these two pieces of quote identical and equally secure? $select->where($this->getAdapter()->quoteInto('id = ?', 3)); $select->where(id = ?, 3); Thanks!

  Read the article

• How To Read C# Code From Java Background

  - by ChloeRadshaw

  I come from a Java background and have been using C# for the last year - So far the API docs I use are at MSDN (http://msdn.microsoft.com/en-us/library/ms132397.aspx). I tend to use the lightweight C# docs. What annoys me about that is that I don't see one page with details of the class, a list of members, a list of methods and properties like I would with a Java API definition. Is this possible?

  Read the article

• What groupbox method (if any) monitors radio button selections?

  - by JohnK813

  I'm creating a VB.NET application that includes two radio buttons inside of a groupbox. If the first radio button is selected, a certain tab on a tab form should be enabled. If the second radio button is selected, that tab should be disabled. Is there a groupbox method that monitors both radio buttons and fires when the selection changes? Or do I need to set up individual methods for each radio button?

  Read the article

• How to set up a progress bar

  - by user310850

  I have a php page named import.php. while executing this file a lot of database operation is doing.So i need to show the progress to the user, by using a progres bar.How is it possible using any of these php ajax, javascript, jquery,css, flash... methods

  Read the article

• How to minimize code area in Eclipse?

  - by Stella

  There is a nice feature in Visual Studio: you can create special code areas which can be minimized just as class methods in Eclipse are minimized. Like: #region //some code #endregion Is there a way do make such pleasant feature in Eclipse?

  Read the article

• for loop vs std::for_each with lambda

  - by Andrey

  Let's consider a template function written in C++11 which iterates over a container. Please exclude from consideration the range loop syntax because it is not yet supported by the compiler I'm working with. template <typename Container> void DoSomething(const Container& i_container) { // Option #1 for (auto it = std::begin(i_container); it != std::end(i_container); ++it) { // do something with *it } // Option #2 std::for_each(std::begin(i_container), std::end(i_container), [] (typename Container::const_reference element) { // do something with element }); } What are pros/cons of for loop vs std::for_each in terms of: a) performance? (I don't expect any difference) b) readability and maintainability? Here I see many disadvantages of for_each. It wouldn't accept a c-style array while the loop would. The declaration of the lambda formal parameter is so verbose, not possible to use auto there. It is not possible to break out of for_each. In pre- C++11 days arguments against for were a need of specifying the type for the iterator (doesn't hold any more) and an easy possibility of mistyping the loop condition (I've never done such mistake in 10 years). As a conclusion, my thoughts about for_each contradict the common opinion. What am I missing here?

  Read the article

• unprotected access to member in property get

  - by Lenik

  I have a property public ObservableCollection<string> Name { get { return _nameCache; } } _nameCache is updated by multiple threads in other class methods. The updates are guarded by a lock. The question is: should I use the same lock around my return statement? Will not using a lock lead to a race condition?

  Read the article

• Writing an ostream filter?

  - by shoosh

  I'd like to write a simple ostream which wraps an argument ostream and changes the stream in some way before passing it on to the argument stream. The transformation is something simple like changing a letter or erasing a word What would a simple class inheriting from ostream look like? What methods should I override?

  Read the article

• Enums in java compile error

  - by London

  Hi, I'm trying to learn java from bottom up, and I got this great book to read http://www.amazon.com/o/ASIN/0071591060/ca0cc-20 . Now I found example in the book about declaring Enums inside a class but outside any methods so I gave it a shot : Enum CoffeeSize { BIG, HUGE, OVERWHELMING }; In the book its spelled enum and I get this compile message Syntax error, insert ";" to complete BlockStatements Are the Enums that important at all?I mean should I skip it or its possible that I will be using those some day?

  Read the article

• Permutation of Strings in C++

  - by cam

  I'm looking for just a simple method for permutating strings/integers in C++. I can easily do it in C#, but I'm just learning C++ and can't seem to find the right methods. Can someone show me a simple example that will find all permutations of an integer? And then the exact same for a string?

  Read the article

• Business object and linq2SQL

  - by Overdose

  What is the optimal way to write the code which interacts with DB using linq2SQL? I need to add some business logic to the entities. So I guess there are two ways: Write some wrapper class. The main minus is that many fields are the same, so i don't feel it as DRY style. Add business logic methods to linq2sql entities(these classes are partial) directly ???

  Read the article

• Objective-measures of the expressiveness of programming languages [closed]

  - by Casebash

  I am very interested in the expressiveness of different languages. Everyone who has programmed in multiple languages knows that sometimes a language allows you to express concepts which you can't express in other languages. You can have all kinds of subjective discussion about this, but naturally it would be better to have an objective measure. There do actually exist objective measures. One is Turing-Completeness, which means that a language is capable of generating any output that could be generated by following a sequential set of steps. There are also other lesser levels of expressiveness such as Finite State Automata. Now, except for domain specific languages, pretty much all modern languages are Turing complete. It is therefore natural to ask the following question: Can we can define any other formal measures of expressiveness which are greater than Turing completeness? Now of course we can't define this by considering the output that a program can generate, as Turing machines can already produce the same output that any other program can. But there are definitely different levels in what concepts can be expressed - surely no-one would argue that assembly language is as powerful as a modern object oriented language like Python. You could use your assembly to write a Python interpreter, so clearly any accurate objective measure would have to exclude this possibility. This also causes a problem with trying to define the expressiveness using the minimum number of symbols. How exactly to do so is not clear and indeed appears extremely difficult, but we can't assume that just because we don't know how to solve a problem, that nobody know how to. It is also doesn't really make sense to demand a definition of expressiveness before answering the question - after all the whole point of this question is to obtain such a definition. I think that my explanation will be clear enough for anyone with a strong theoretical background in computer science to understand what I am looking for. If you do have such a background and you disagree, please comment why, but if you don't thats probably why you don't understand the question.

  Read the article

• no autocompletion for symfony getTable() function?

  - by fayer

  if i use Doctrine_Core::getTable('User')- i will have no auto completion. isnt it better to just use User:: for autocompletion? and of course i have to define the methods static what is the benefit with using getTable except that i can use a non static method?

  Read the article

• combination and permutation in C++

  - by skydoor

  What's the most widely used existing library in C++ to give all the combination and permutation of k elements out of n elements? I am not asking the algorithm but the existing library or methods. Thanks.

  Read the article

• Algorithm to generate 1000 distinct integers in the range [0,8000]?

  - by The Last Ninja

  What are some alternative methods to generate 1000 distinct random integers in the range [0,8000] as opposed to the following: naive method: generating a number and checking if it's already in the array. O(n^2) linear shuffle: generate sequence 0 to 8000, shuffle, take the first 1000. O(n)

  Read the article

• constructor in objective c

  - by zp26

  HI, I have create my iPhone apps but i have a problem. I have a classViewController where i have implemented my program. I must alloc 3 NSMutableArray but i don't want do it in a grapich methods. There isn't a constructor like java for my class? Thanks so much and sorry for my english XP // I want put it in a method like constructor java arrayPosizioni = [[NSMutableArray alloc]init]; nomePosizioneCorrente = [NSString stringWithFormat:@"noPosition"];

  Read the article

• Why do we make a copy of final instance variable in a method in Java?

  - by PRK

  For instance: private final Object o; public void doSomething(){ final Object local = this.o; //access methods of local; } This practice is followed in lots of java classes (such as ArrayBlockingQueue). What's the benefit of this?

  Read the article

• Alternatives to persisting objects than using __destruct() in PHP

  - by Michael

  I usually use a classes destructor method __destruct() to persist objects to session or what have you. It is just very convinient, but I'm curious to if there are any other methods that are equally appealing. Do you know of such? The curiousity arose as I was to merge/utilize two frameworks that both made use of __destruct() for persistance resulting in a race-problem.

  Read the article

• equals() and equalsIgnoreCase()

  - by Vaibhav Bajpai

  Why do we have equals() and equalsIgnoreCase() as two different methods, when equals() could have been overloaded with a special ignoreCase argument to provide equalsIgnoreCase() functionality?

  Read the article

• What is best practice for working with DB in Wordpress?

  - by Steven

  I'm developing a plugin for Wordpress, and I need to store some information from a form into a table in the DB. There are probably lots of pages explaining how to do this, but I can't find them. What are the best methods for storing data in WP using WP function?

  Read the article

• Static member class - declare class private and class member package-private?

  - by Helper Method

  Consider you have the following class public class OuterClass { ... private static class InnerClass { int foo; int bar; } } I think I've read somewhere (but not the official Java Tutorial) that if I would declare the static member classes attributes private, the compiler had to generate some sort of accessor methods so that the outer class can actually access the static member class's (which is effectively a package-private top level class) attributes. Any ideas on that?

  Read the article

• Checking Response Code C#

  - by j-t-s

  Hi All I was wondering if there's a way to detect the response codes on a website using C#? Since C# .NET has HTTP-based methods, I'm assuming that it can be done? Thank you

  Read the article

• Mobile opera have background sound support?

  - by Mark

  I make browser/html/js games. One of my biggest pains in the arse is the lack of background sound support in mobile safari. This lack of support makes high value games pretty much impossible. Does anyone know if opera mini supports html5 audio, or any mobile browser for that matter. If not, what are some alternatives methods.

  Read the article

< Previous Page | 217 218 219 220 221 222 223 224 225 226 227 228  | Next Page >