What is boxing in .Net?

Question

1.00/5 (1 vote)

See more:

I know what is boxing/unboxing in .NET but I don't know which exactly refer "Convert an object to a value type".

If fact I get this interview question

What is boxing in .Net?

A. (None of these)
B. Convert an object to a value type
C. Grouping lines of code into a block
D. Including external resources into a project

Posted 5-Apr-15 5:03am

Bastien Vandamme

Add a Solution

Comments

Sascha Lefèvre 5-Apr-15 15:10pm

A.
Multiple choice is the dumbest kind of test ever invented.

You need to understand the difference between value types and reference types to understand boxing (and unboxing).

2 solutions

Solution 2

Its A. You might want to catch up on some .net basics by reading a few beginner tutorials.
It will help you understand these concepts better and answer some of these questions on your own.

Here are a couple of links -
Boxing and unboxing in C#[^]
Boxing and Unboxing[^]

Posted 5-Apr-15 5:39am

Abhinav S

Comments

Bastien Vandamme 5-Apr-15 11:44am

This question is not so basic. I ask it on smarterer and I only get 25% of correct answer.

Sergey Alexandrovich Kryukov 5-Apr-15 12:48pm

Your logic is wrong. How such percentage can characterize the question.

The question is not basic, of course — it is not a correct question which have any rights to exist, this is a stupid multiple-choice game. Please don't write this kind of trash here, this is just rude. Ask questions if you really want to know something, have a problem, and so on.

—SA

Bastien Vandamme 6-Apr-15 4:11am

But I really want to know. I agree with you. It is not a correct question which have any rights to exist, this is a stupid multiple-choice game. But it is also a question I had during an Interview.

Sergey Alexandrovich Kryukov 6-Apr-15 9:45am

My other advice would be: don't prepare interview questions, this is useless. Rely on your real knowledge and experience.
—SA

Bastien Vandamme 16-Apr-15 23:48pm

Not so easy. I have a great logic and capacity to build system but I have problem with definitions and theory. I don't know the name of the patterns because most of the time I create them by using my logic. When you are in an Interview this doesn't help. You need to talk with the correct definitions. You act exactly like my interviewers. Because I ask a basic question you think I know nothing. I learned object with Java and some concept in .NET like boxing/unboxing are not really object oriented and if I understand the concept I'm just mixing the two word together. Interviews are a nightmare for me.

Sergey Alexandrovich Kryukov 17-Apr-15 1:22am

I really, really appreciate your approach to the patterns. In certain sense, I do something like that, too. I don't know what you found in common between me and interviewers you describe, I'm almost the opposite.

I found that, to most developers, those patterns did more evil than good: they start thinking at how to stick some patterns in their projects, as if projects were created in order to use patterns, while the intention of patterns was to help projects. And don't be fooled with patters pretended to be "theory" or "science" — they are not. Patterns are only good as suggestions which should be considered as purely practical, and considered critically.

So, perhaps your problem is different: you accept the idiotic game demonstrated by this question someone asked you. You should not take such things seriously. When you search for a job, it's important not to accept the rules of the game and not to allow people to brainwash you.

—SA

Add a Solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2015-04-05T05:12:00

Solution 1

A.
As a very quick Google would have told you, Boxing is the process of encapsulating a Value type so that a reference to it can be passed to a method, or included in a collection of objects such as a List

Posted 5-Apr-15 5:12am

OriginalGriff

Comments

OriginalGriff 5-Apr-15 11:27am

There is no answer with "convert" except "Boxing does not convert value types variables into anything".

It encapsulates them: it creates a reference type object which holds a value type value (similar to a very, very simple class) and copies the value from the value type into it. The encapsulating reference type instance can then be used to pass a reference, and can be "unboxed" to get the value back later. There is no conversion involved.

Sergey Alexandrovich Kryukov 5-Apr-15 12:50pm

If this is how you "learn", you whole education is the waste of time. If this is because of your school, I'm really sorry.
—SA

Abhinav S 5-Apr-15 11:39am

5.

What is boxing in .Net?

2 solutions

Solution 2

Solution 1

Add your solution here

Preview 0

What is boxing in .Net?

2 solutions

Solution 2

Solution 1

Add your solution here

Preview 0

Existing Members

...or Join us