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I was wondering, does a class get boxed? I always assumed every class had a virtual table which can be used to identify the class, so does it need to be boxed?
Started by acidzombie24 on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
boxed)..
As instances of classes are already objects they never need to be boxed (i.e.
Classes are reference's unified type system).
Class instances do not get boxed.
Only value types (structs) get boxed.
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I have heard of types being referred to as "boxed" in such or such a language. In Java, I have heard of "autoboxing". What is this? Is it having wrapper classes for a type? How would my code change if I'm working with boxed or unboxed types?
Started by Rosarch on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
If you want to add two integers that have been boxed, for example, behind the scenes they are "unboxed" into primitive types....
Boxing means wrapping them in an object so they have the behavior work.
That are primitive but can be boxed.
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MSDN docs say that only value types need boxing, but this does not apply to string, which is a value type and does not need to be boxed. I initially tried Type.IsValueType, but since that returns true for string, I can't use it to determine whether a ...
Started by Hermann on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
I'd be careful if you work with nullable values though. .
Need to be boxed or not.
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Ask your Facebook Friends
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In C#, any user-defined struct is automatically a subclass of System.Struct and System.Struct is a subclass of System.Object.
But when we assign some struct to object-type reference it gets boxed.
e.g.
struct A{ public int i; } A a; object obj=a; // boxing...
Started by Vinicius André on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
You don't mention anything explicitly to box behavior is directly provided by them....
From a low level perspective, this includes copying the value hiding the boxing operation from you pretty well.
It's necessary for it to be boxed.
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Suppose I declare a generic List containing values of a struct type:
struct MyStruct { public MyStruct(int val1, decimal val2) : this() { Val1 = val1; Val2 = val2; } public int Val1 {get; private set;} public decimal Val2 {get; private set;} } List<...
Answer Snippets (Read the full thread at stackoverflow):
It isn't ....
Internally it stores its values in a simple array:
public class List<T> element of a List<(Of <(T>)>) object does not have to be boxed before the element can is allocated on the heap.
Does not box anything.
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Hey All,
I have decided it is impossible to do the following (equivalent) enum operations via reflection - as the Enum class has no operators, and nor does the emitted code expose any operators:
object boxedEnum = MyEnum.Flag1 | MyEnum.Flag2; boxedEnum...
Started by Jonathan C Dickinson on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
You just have to unbox the enum, do the operation and box it again:
boxedEnum = (MyEnum)boxedEnum & ~MyEnum.Flag2;
Edit:
Provided that the underlying type....
Want to achieve something like this?
A boxed value can never be changed in place.
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I'm tring to build a library for simplifing late binding calls in C#, and I'm getting trouble tring with reference parameteres. I have the following method to add a parameter used in a method call
public IInvoker AddParameter(ref object value) { //List...
Started by Ricky AH on
, 5 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Does compile as any value type is automaticly boxed into an object, and any reference type...
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This is a branch of this thread:
The Birds, The Bees, & The Monkees (boxed set)....FINALLY! Pt. 3
Please us this thread to discuss the music and the packaging of this release only
If you want to discuss, comment, speculate, complain, complement, theorize...
Started by stereoptic on
, 20 posts
by 14 people.
Answer Snippets (Read the full thread at stevehoffman):
Box....
Dream World
2.
I don't have the box yet, so maybe this was addressed in the notes
Side Two
1.
Zor with? Sounds about right to me.
Daydream Believer
7.
Alvin
6.
The Poster
5.
Tapioca Tundra
4.
Box 9847
3.
Dream World
2.
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So I was asked this question today.
Integer a = 3;
Integer b = 2;
Integer c = 5;
Integer d = a + b;
System.out.println(c == d);
What will this program print out? It returns true. I answered it will always print out false because of how I understood auto...
Started by John W. on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Boxing uses Integer.valueOf method, which uses specification:
If the value p being boxed is true, false, a byte, a char in the range \u0000 to \u007f-boxed) Integers are cached, so you'....
Boxed values between -128 to 127 are cached.
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Let's say that I have a div that is called mainDiv, and it contains a <p> element with some text inside. I want to create another element (a <p> or a <div> or something else maybe?) inside the same div that is displayed when you hover...
Started by Maxim Z. on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
The source code should give you some idea of how to implement that effectively, or you could just save yourself some time and ... .
Not really a direct hack, but if I was burdened with that task I would take a look at jQuery Tooltip from the TOOLS library .
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