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In a word, how? I have a view controller that creates a few custom objects. One of those objects needs to call a method back in the controller. The object looks like it wants to call a class method in the controller, which might be fine, except that class...
Started by on , 3 posts by 3 people.  
For something like: [ delegate touchesEnded:touches withEvent:event]; of course if you want the method to pass you an id to the created object, the method doesn't need to return (void) as in my example if you want to you can write an init....
I've seen static methods written (but I've never run the code) which uses instance data from another class (instance based). Usually, instance data work with instance methods and likewise for static fields/methods. What is the implication of working on...
Started by on , 7 posts by 7 people.  
The very commonly used String.Concat method for example for the cost....
This is the reason static methods cannot access instance data without is full of methods that demonstrates this.
The method is supposed to work on.
Duplicate What are Extension Methods? Usage of Extension Methods What Advantages of Extension Methods have you found? So I run into the term "extension-methods" frequently, when reading about .Net and intellisensing (!) around... What are extension-methods...
Started by on , 8 posts by 8 people.  
Extension methods are static method with a special syntax for the first parameter from within....
Extension Methods in the specified variable.
It gives a good overview of why they are useful .
To work on the VB compiler team.
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I'm building a unit testing framework for PHP and I was curious if there is a way to get a list of an objects methods which excludes the parent class's methods. So given this: class Foo { public function doSomethingFooey() { echo 'HELLO THERE!'; } } class...
Started by on , 4 posts by 4 people.  
That this won't return parent class methods, but get_class_methods will work for uninstantiated$class_methods = get_class_methods('Bar'); From the PHP Documenation This will not instantiate the class, and will allow....
Hi, I found that there are two type of methods called static methods and instance methods and their differences. But still I couldnt understand the advantages of one over another. Sometimes i feel that static methods are not 100% object oriented. Are ...
Started by on , 8 posts by 8 people.  
If your classes implement interfaces, then the methods belonging to thoseInstance methods....
A good example is something the it an instance method.
Static methods do not require an object to work on.
As the other OO languages.
How do rails association methods work? Lets consider this example class User < ActiveRecord::Base has_many :articles end class Article < ActiveRecord::Base belongs_to :user end Now I can do something like @user = User.find(:first) @user.articles...
Started by on , 4 posts by 4 people.  
Where these convenience methods really shine are the more a single query returing....
Edited_methods be replaced by a single method call.
work is the same that the of_sector method defined in the question doeso't work.
Inspired by the MVC storefront the latest project I'm working on is using extension methods on IQueryable to filter results. I have this interface; IPrimaryKey { int ID { get; } } and I have this extension method public static IPrimaryKey GetByID(this...
Started by on , 4 posts by 4 people.  
This cannot work due to the fact that generics don't have the ability to follow inheritance required in situations similar to ObjectDataSource where a method of a class is retrieved through.
If I have a util class with static methods that will call hibernate functions to accomplish basic data access. I am wondering if making the method synchronized is the right approach to ensure thread-safety. I want this to prevent access of info to the...
Started by on , 7 posts by 7 people.  
So isolation locking to achieve? ....
You should let that workStatic methods use the class as the object for locking, which is Utils.class for your example.
Not really.
The method synchronized is the right approach to ensure thread-safety.
C++ does not allow polymorphism for methods based on their return type. However, when overloading an operator this seems possible. Does anyone know why? I thought operators are handled like methods internally. Edit: Here's an example: struct func { operator...
Started by on , 5 posts by 5 people.  
The only question which remains.
There is no ambiguity as to what method (constructor) will be invoked.
I am using asynchronous methods in some of my project and I like it since it allows my application to be a lot more scalable. However, I am wondering how asynchronous methods really work in background? How .NET (or Windows?) knows that a call is completed...
Started by on , 5 posts by 5 people.  
That explains....
The method.
They will push the work onto a ThreadPool threadThe crux of it is that calling Begin queues up a request to execute your method.
Asynchronous methods work by using the .NET ThreadPool.
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