unboxing Questions
3
Solved
I'm having a hard time understanding this. Consider the following example:
protected void Page_Load(object sender, EventArgs e)
{
// No surprise that this works
Int16 firstTest = Convert.ToInt16...
1
I am trying to use Haskell for data analysis. Because my datasets are reasonably large (hundreds of thousands and potentially millions of observations), I would ideally like to use an unboxed data ...
Lawson asked 13/11, 2011 at 9:3
1
Solved
In the following code, I am getting a compilation error stating that I have a type mismatch on 'x':
val someRef: java.lang.Long = 42L
someRef match {
case x: Long => println("The answer: " + x...
Disuse asked 11/10, 2011 at 16:27
2
Solved
What i'm trying to achieve here is a straight value comparison of boxed primitive types.
((object)12).Equals((object)12); // Type match will result in a value comparison,
((object)12).Equals((obje...
Automaton asked 12/7, 2011 at 17:49
4
Solved
Are 2 and 3 boxing/unboxing examples?
1) The documentation example:
int i = 123;
object iBoxed = i;
i = (int) iBoxed;
2: Is the boxing/unboxing as well?
int i = 123;
object iBoxed = i;
i = In...
4
Solved
Does Java 5 or higher apply some of form of "boxing" to arrays? This question came to mind as the following code goes through an array as if it's an Iterable.
for( String : args ){
// Do stuff
}
...
5
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Today I stumbled upon an interesting bug I wrote. I have a set of properties which can be set through a general setter. These properties can be value types or reference types.
public void SetValue...
3
Solved
I this MSDN Magazine article, the author states (emphasis mine):
Note that boxing always creates a new
object and copies the unboxed value's
bits to the object. On the other hand,
unboxing si...
3
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We are currently doing some iterations and other operations using x++; where x is an Integer and not an int.
Operations may be repeated throughout some user operations on our system but nothing t...
2
Solved
Integer integer1 = 127;
Integer integer2 = 127;
System.out.println(integer1 == integer2);//true
integer1 = 128;
integer2 = 128;
System.out.println(integer1 == integer2);//false
I found it ...
Tantalate asked 7/4, 2011 at 13:32
1
Solved
2
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In the accepted best response to this question, there is a clear explanation why boxing happens.
However, if I decompile the code (using java decompiler) I cannot see use of scala.runtime.BoxesRu...
2
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I have a class that extends the LinkedList class.
Here's an excerpt of the code:
class SortedList<Integer> extends LinkedList<Integer> {
int intMethod(Integer integerObject){
return ...
Karrah asked 6/2, 2011 at 7:30
4
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I have a console application that allows the users to specify variables to process. These variables come in three flavors: string, double and long (with double and long being by far the most common...
4
Solved
I'm aware that boxing and unboxing are relatively expensive in terms of performance. What I'm wondering is:
Does passing a value type to a method's out parameter cause boxing/unboxing of the vari...
Autoerotic asked 26/1, 2011 at 16:29
3
Solved
Possible Duplicates:
Why do we need boxing and unboxing in C#?
What is boxing and unboxing and what are the trade offs?
In C# what does "Box and Unbox" mean?
Here's an extract fr...
6
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3
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Consider the following::
Object box = 5;
int @int = (int)box; // int = 5
int? nullableInt = box as int?; // nullableInt = 5;
StringComparison @enum = (StringComparison)box; // enum = OrdinalIgnore...
2
Solved
I'm trying to write a small script which parses and executes Brainfuck code, to understand the GHC options of optimization, I'm trying to optimize the code in order to be a bit faster and to unders...
Yettie asked 4/9, 2010 at 9:5
5
Solved
I got the following code:
object var3 = 3;
Console.WriteLine(var3.GetType().ToString());
Console.WriteLine(typeof(object).ToString());
The output is:
System.Int32
System.Object
Why aren't the...
9
Reference: http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html
"If your program tries to autounbox null, it will throw a NullPointerException."
javac will give you a compile-tim...
Savell asked 27/5, 2010 at 17:11
4
Solved
I'm trying to figure out syntax that supports unboxing an integral type (short/int/long) to its intrinsic type, when the type itself is unknown.
Here is a completely contrived example that demonst...
Mcroberts asked 19/5, 2010 at 20:15
1
I would like to manipulate matrices (full or sparse) efficiently with haskell's vector library.
Here is a matrix type
import qualified Data.Vector.Unboxed as U
import qualified Data.Vector as V
...
5
Solved
I have a Dictionary(TKey, TValue) like
Dictionary<int, ArrayList> Deduction_Employees =
new Dictionary<int, ArrayList>();
and later I add to that array list an anonymous type like ...
Kiss asked 19/2, 2010 at 21:15
4
Solved
I am a big fan of auto-boxing in Java as it saves a lot of ugly boiler plate code. However I have found auto-unboxing to be confusing in some circumstances where the Number object may be null. Is t...
South asked 9/1, 2010 at 13:28
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