Evaluation that bounds the resulting value to the corresponding variable in the function (frequently copying the value into a new memory region).
Questions tagged [call-by-value]
95 questions
0
votes
2 answers
Is this call-by-reference?
I have an ArrayList:
ArrayList ReceivedPackets = new ArrayList();
And I have another ArrayList:
ArrayList returnList = ReceivedPackets;
Why does returnList loose it's value when I run this code?
ArrayList ReceivedPackets = new ArrayList(); //…
Christoph
- 542
- 4
- 24
0
votes
1 answer
XML function by value issue?
I have a function that returns a hash table with a variety of keys, one of which is XML. I also have some code that is intended to revise this XML before returning it. However, I am having what at first appeared to be pipeline pollution issues, but…
Gordon
- 6,257
- 6
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- 89
0
votes
2 answers
Pass by value - List name
Can someone tell me what I am doing wrong here? I trying to pass the list name to a method that would delete all the rows in the list:
public static void DeleteLastUpdate(Microsoft.SharePoint.Client.List oList)
{
using (var context =…
SharePointDummy
- 347
- 1
- 6
- 22
0
votes
1 answer
Does Church-Rosser theorem apply to call-by-value reduction?
I've been studying the lambda calculus and recently saw the Church-Rosser theorem. The theorem states that when applying reduction rules to terms in the lambda calculus, the ordering in which the reductions are chosen does not make a difference to…
Roger Fu
- 1
- 2
0
votes
2 answers
References of objects in Java EE. Difference for remote and local interfaces?
As far as I know, Java is only call-by-reference. If an entity has to go through a remote interface, can it still have a reference? Now the entity is basically in another container, how can it still have the reference of the object? In other words:…
yemerra
- 1,352
- 4
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- 44
0
votes
0 answers
why javascript use call by reference , sometimes :D
Hello
i lost about 4 hours debugging strange issue
my work flow was
var config = {
someKey : [
'valueA','valueB'
]
};
function anAction()
{
// some code and loops like a maze, then
async.each(config.someKey,function(configKey)
{
…
Bdwey
- 1,813
- 1
- 16
- 18
0
votes
0 answers
Java copies whole object when passed in function?
My question resembles a lot the battle between "is java pass-by-value or pass-by-reference". But I still can't understand what happens when I pass an object in a function. For example let's say that I have a huge HashMap and I want it to be…
jojoba
- 554
- 9
- 19
0
votes
4 answers
Call by reference-or- Call by value
class Box {
int size;
Box(int s) {
size = s;
}
}
public class Laser {
public static void main(String[] args) {
Box b1 = new Box(5);
Box[] ba = go(b1, new Box(6));
ba[0] = b1;
for (Box b :…
Programmer345
- 540
- 2
- 15
- 29
0
votes
1 answer
Can I insert an object by value (copying) from one std::vector to another?
(I realized that it was a copy-paste-mistake in my program. But the reason, why I get exactly that error message could still be interesting for somebody else, therefore, I updated the question.)
I have the following code snippet which copies the…
Michael
- 7,407
- 8
- 41
- 84
0
votes
7 answers
Why use call-by-value in C++?
What is the purpose of having parameters as call-by-value when it is more efficient to use call-by-reference? (For non-primitive data types.)
Also, what if one was to add the const tag to call-by-reference parameters so that they won't be modified?…
user3334960
0
votes
2 answers
Is UML DataType passed call-by-value like C# structs
I have a question regarding UML DataTypes.
The UML Superstructure says:
A data type is a type whose instances are identified only by their value.
If I understand this correctly it means, equality is checked by looking at the values of all…
jsf
- 913
- 3
- 14
- 22
0
votes
3 answers
python integer argument value is not changing even though id() is same in calling and called functions
def func(x):
print "inside function" ,id(x)
x = 2
x = 50
print "outside function" ,id(x)
print 'Value of x before function call is', x
func(x)
print 'Value of x after function call is', x
output:
outside function 6486996
Value of x before…
user1423015
- 593
- 1
- 4
- 12
0
votes
1 answer
Call-by-reference and Call-by-value
I am writing a program that lets the user input an integer into the variable value, and calls the two alternate functions, each of which triples the chosen integer value.
The function triple_by_value passes the variable number by value, triples the…
Leo
- 67
- 1
- 1
- 9
0
votes
1 answer
Call by value, name/reference, need in ML
I am studying for a final, and I have a practice problem here.
The question asks for the result of
val y = ref 1;
fun f x = (!y) + (x + x);
(f (y := (!y)+1; !y)) + (!y);
under the following parameter passing techniques:
Call by value
Call by name…
Davido Widre
- 185
- 2
- 13
0
votes
1 answer
TypeScript Call-by-Reference Confusion
Folks,
while familiarizing myself with TypeScript, I ran into serious troubles getting a straightforward LinkedList implementation to work properly.
Here's the source code - I'll describe the problem in detail below.
class LinkedList {
…
eliasw
- 670
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- 9