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• How can I validate a "does not match" type using CodeIgniter's Form Validation class?

  - by Shamoon

  I want to ensure that a certain text field does not contain a specific value. Is there any way for me to do this using CI's Form Validation class or do I have to write my own extension for it?

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• How do I add a decorator to a class in python?

  - by Timmy

  how do I add a function with a decorator to a class? i tryed def add_decorator( cls ): @dec def update(self): pass cls.update = update @dec did not to with update im to use this with @orm.reconstructor in sqlalchemy.

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• How do I change the parent class in ANTLR-3?

  - by etheros

  By default, a parser generated using ANTLR-3 extends from org.antlr.runtime.Parser. How do I have it extend my custom class instead?

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• How do I apply the browser height to a CSS class?

  - by ChrisBenyamin

  You can read your browser dimensions with jQuerys $document.height or with simple JS via height: window.innerHeight || document.body.clientHeight. But how do I apply the value to a CSS class?

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• Where to use Inner Class in professional java developement life?

  - by abc

  Where to use Inner Class in professional java developement life? Please explain.. googling didn't wrk efficiently..

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• How do I add a method to the Form class in Windows Forms?

  - by bhaveshtarkhala

  I want to add a new method in Windows.Forms.Form class.. Please help how to do this if anyone knows..

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• How does one access this hash from an ActiveRecord class in the Rails console?

  - by randombits

  I have a simple hash I created to make it easier to do dictionary type lookups. For instance: class Numbers < ActiveRecord::Base MY_TYPES { one: => 1, two: => 2 } end Is it not possible in the rails console to access this hash via Numbers.MY_TYPES[:one]?

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• Is using css class always a better idea to get rid of style overriding problems?

  - by metal-gear-solid

  Is using css .class in place of #id always a better idea to get rid of style overriding problems and iimportant? #content ul li a {font-size:10px} #content .demo ul li a {font-size:15px}

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• How should each class in an application retrieve the Spring application context?

  - by Derek Mahar

  How should each class in an application retrieve the Spring application context? Or, stated another way, how many times should an application invoke new ClassPathXmlApplicationContext("applicationContext.xml")?

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• Magic methods + Reflection API = can't investigate class properties. Why?

  - by Parth

  If I use magic methods. While using reflection API, I can't investigate class properties.. Why is it so?

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• How i can i use the value of a variable from one class in another in objective c?

  - by user337174

  Hi i am fairly new to objective c and have been doing some iphone programming. Is it possible to look up the value of a variable in a different class? Basically what i am doing is running a function that exists in my app delegate from a view controller, but the app delegate needs to use a variable stored in the view controller from which the app delegate function was called. Make sense??? Any help would be grateful. James

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• how to assign dynamically a value in a class propert in PHP?

  - by yanis

  I would like to assign a value in a class property dynamically (that is referring to it using a variable). #Something like: setPropValue($obj, $propName, $value);

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• I need a dictionary-like mapping between characters and other kinds of objects. Which class would be

  - by nullPointerException

  This is in Squeak/Pharo. If I want to have a mapping between Character objects like $a and $b to other kinds of objects, and want to look up those other objects based on the Character, what is the best class to use? Dictionary is an obvious choice, but seems wasteful to be hashing character objects which are basically already numbers. I guess what I want is a kind of array where the character value (number) is used as an index/offset, but I am not sure if this is possible with Unicode.

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• Does anyone has working Delphi 7 code, class or unit to upload Tweets to Twitter ?

  - by Edelcom

  Does any one has succesfully created a unit or Delphi 7 class to upload tweets to the TWitter web site ? I would like to be able to add tweets from within my Delphi program.

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• Is it necessary to check all the field in equals method of model class as i am using JPA ?

  - by Urvish

  Is it necessary to check all the field in equals method of model class as i am using JPA ? please reply....

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• When I renamed a class I am getting a deserialization error. How to fix it?

  - by Fred F.

  I renamed the class classBattle to Game and not I get "Unable to load type battle.classBattle+udtCartesian required for deserialization." This is the line of code MapSize = (Game.udtCartesian)formatter.Deserialize(fs); How do I fix this? Does this mean I cannot rename classes?

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• C#: Do I need to lock a static class when accessing from separate threads?

  - by JimDaniel

  I have a static class with a few methods that just take in a byte array, parses it, and returns a structure. I need to call these methods from many separate threads. Do I need a lock() or some kind of thread-safety within the methods? I can't get my head around it.

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• class ProfilePresenter < ActionView::Base | url_for doesn't work. why?

  - by Totty

  class ProfilePresenter < ActionView::Base def initialize super url_for # i got: You have a nil object when you didn't expect it! # The error occurred while evaluating nil.url_for end end url_for doesn't work. why? i make a new instance like this ProfilePresenter.new

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• Rails: i would need to load a haml file in a class and render in the caller

  - by Totty

  I have this: app/modules/grid_module.rb app/modules/grid.html.haml then in my view: app/views/layouts/default.html.haml I want to make a new instance of the grid_module and render it content. Its content is into the grid.html.haml and this file can only use the instance vars set in the grid_module.rb is this possible to do? (the grid name is just an example, it must be more flexible, to load the html.haml file based on the .rb class) the grid_module must has access to models too* like this: User.find_by_id(4) thanks for help

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• Calling a static method on a class known by name?

  - by Palantir

  Hello! Is there any way to obtain this effect in a PHP version prior to 5.3? class A { public static function x() {print 'ok'; } } $className = 'A'; $className::x(); Thanks! Palantir

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• In java, is there any disadvantage to static methods on a class?

  - by Michael Campbell

  Lets assume that a rule (or rule of thumb, anyway), has been imposed in my coding environment that any method on a class that doesn't use, modify, or otherwise need any instance variables to do its work, be made static. Is there any inherent compile time, runtime, or any other disadvantage to doing this?

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• how to make array of class objects using dynamic allocation in c#?

  - by jack22

  hi, i made a class named x; so i want to make array of it using dynamic allocation x [] myobjects = new x(); but it gives me that error Cannot implicitly convert type 'ObjAssig4.x' to 'ObjAssig4.x[]' i know it's dump question but i am a beginner thanks

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• Best way to save to nsuserdefaults for custom class?

  - by cannyboy

  If I have a custom class Person which has three variables (which are propertized and synthesized): NSString* theName; float* theHeight; int theAge; Person instances are stored in an NSArray 'Group'. There is only one Group. What is the best way of string and loading the Group in NSUserDefaults? (bearing in mind that float and int are not legal for NSUserDefaults)

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• How do I include a file in a class?

  - by 404Error

  Hey, I want to include a file to be accessible to any method/function in a PHP class. The file just contains a base-64 encoded variable. How do I do this? Thanks.

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• How do you make one line bold in a TreeView Class in WPF/C#?

  - by xarzu

  How do you make one line bold in a TreeView Class in WPF/C#? I mean, how do you make just one line in a Tree View bold at runtime?

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