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What is a wrapper class?
How are such classes useful?
Started by Bhaskar on
, 9 posts
by 9 people.
Answer Snippets (Read the full thread at stackoverflow):
A wrapper class is a class that "wraps" around something else....
See: Adapter pattern , Facade pattern A wrapper class is a class and the original class being wrapped.
In a simpler or merely different API.
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Hello All,
When i should go for wrapper class over primitive types? Or On what circumstance i should choose between wrapper / Primitive types?
Started by Sri Kumar on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
But remember to create Integer objects, but not....
Primitive types, are used for arrays autoboxing, the "when to use primitive or wrapper" frontier has become quite fuzzy.
If you want to use Collections, you must use Wrapper classes.
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Greetings,
I have been looking for a logging framework for .net (c#) and decided to give log4net a go after reading up on a few question/answer threads here on stackoverflow. I see people mentioning over and over that they use a wrapper class for log4...
Started by Xerx on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
A possible use for a log4net wrapper could be a class that gets the calling class and method via for all methods....
My understanding is that a wrapper class for log4net would be a static class which takes care).
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Hi all,
I'm currently reading Dive Into Python by Mark Pilgrim, and have gotten to the section on inheritance. In section 5.5 , Pilgrim mentions the differences between inheriting from the wrapper class UserDict vs inheriting from the built-in dict type...
Started by Peter Di Cecco on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
You're right:
The need for this class has been largely supplanted by the ability to subclass to the introduction of dict, the UserDict class was used to create dictionary-like sub-classes that obtained new from the documentation of....
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We have wrapper classes in java like Interger, Float.. why it is still supportng primitives which is stoppting java to be fully object oriented language?
Answer Snippets (Read the full thread at stackoverflow):
Whether.
The wrapper types are also immutable, which makes it extra expensive if one wanted) both the value (which is in the stack) and the reference to the wrapper object.
Performance.
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I find myself creating a significant number of wrapper classes, purely because I want to mock out the behaviour of
Classes that don't lend themselves well to the RhinoMocks isolation model (for instance like DirectoryInfo or WindowsIdentity ) Native Win...
Started by jpoh on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
If you're using a mock, to me) way....
At least at the interface level.
No 'good' solution to the wrapper class naming issue though that are shorter and descriptive to the class's purpose.
Method calls in a private nested class.
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What is the rationale of not providing no-arg constructors in Wrapper Classes? I know that they were inherently built for Wrapping primitive types, so the right way is to provide a primitive type for constructors. But considering primitive types have ...
Started by Comptrol on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
There's no use in providing the primitive....
This means that once a wrapper object() of a wrapper class, because then you'd be stuck with the default value.
Wrapper objects are immutable.
Wrapped by the class later on.
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I have a piece of code where i need to pass the class of a field in a method. Because of the mechanics of my code i can only handle reference objects only and not primitives. I want an easy way of determining if a Field's type is primitive and swap it...
Started by Savvas Dalkitsis on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
I use Google Collections Library in my answer, because....
There is at least one open bug relating to this .
You can call class.isPrimitive() to know if it is a primitive or not, however, there is no boxing method to convert the classes within the JDK.
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When I find the answer to this question I will feel like an idiot because I know I've solved it in the past, but it goes like this:
I've got a pretty simple little bit of code. It goes like this:
<html lang="en" xml:lang="en" xmlns="http://www.w3.org...
Started by GilloD on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Add this to either #wrapper or #header :
overflow;"
at the bottom of the wrapper..
Specify an explicit overflow for the container.
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I am writing a .NET wrapper class for an existing native class which throws exceptions. What are the best practices for translating between native C++ exceptions and Managed exceptions? Catch and re-throw on a one-to-one basis (e.g. std::invalid_argument...
Started by Brian Stewart on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
If the manager wrapper's interface will be nearly identical to the unmanaged, then throw exceptions....
But on the last project I had to do this on, I went with something much more on the design of the wrapper.
And write the wrapper.
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