reference Questions
3
There are three ways to pass an array to a function
1.
void changeArray(int array[]) {
array[0] = 1111;
}
void changeArrayByPointer(int * array) {
array[0] = 1111;
}
void changeArray(int ...
4
Solved
Consider the following example from the Book:
fn main() {
let string1 = String::from("abcd");
let string2 = "xyz";
let result = longest(string1.as_str(), string2);
println!...
Discrepant asked 2/6, 2021 at 9:32
1
tldr;> Given a trait function that takes a generic callback argument which returns an associated type, the compiler complains that the associated type may borrow arguments from the callback func...
Quadrangular asked 14/8, 2023 at 1:25
6
Solved
In the code:
y = 7
x = y
x = 8
Now, y will be 7 and x will be 8. But actually I wan to change y. Can I assign the reference of y and do that?
For example, in C++ the same thing can be achieved as:...
4
Solved
My view is having issues finding a class located in one of my references.
This reference is to a dll built outside of the project.
The view always gives error:
The type or namespace name 'Compa...
Skiascope asked 7/3, 2011 at 17:54
6
I have a problem with understanding the "pass-by-value" action of Java in the following example:
public class Numbers {
static int[] s_ccc = {7};
static int[] t_ccc = {7};
public static void ...
Ornas asked 31/1, 2009 at 12:33
1
Solved
Here is the code:
#include <vector>
#include <functional>
class TestClass {
public:
const std::vector<int> &getStuff() const {
return callback();
}
protected:
std:...
Redound asked 20/6 at 12:32
4
Solved
I have been searching for a way to save the references of variables of various types into a dictionary, together with a corresponding key. Then i would like to modify the instance of the variable b...
Macarthur asked 20/6, 2014 at 13:57
3
Solved
Question
What is the best way to set a JSONField to have the default value of a new list in django?
Context
There is a model where one of the fields is a list of items. In the case where there a...
Tidbit asked 15/2, 2017 at 2:47
3
Solved
I am trying to use the newtype pattern to wrap a pre-existing type. That inner type has a modify method which lets us work with a borrowed mutable value in a callback:
struct Val;
struct Inner(Va...
3
Solved
I am using AutoMapper to convert a UI model to POCOs that I later serialize to XML using a DataContractSerializer in order to preserve the references between them.
The problem comes that, when map...
Strow asked 21/5, 2013 at 9:27
4
Solved
Given to functions void main() and void hello(byte* a[4]). Main function has an array of four bytes. The array's reference needs to be passed to the function hello for manipulation. I would expect ...
6
Solved
I understand the concept of references in C++, and I understand what they do when used in function parameters, but I am still very much confused on how they work with return types.
For example, wh...
Bouse asked 5/12, 2012 at 7:42
14
Solved
I've got a massive Excel 2003 spreadsheet I'm working on. There are a lot of very large formulas with a lot of cell references. Here's a simple example.
='Sheet'!AC69+'Sheet'!AC52+'Sheet'!AC53)*$D...
Macneil asked 12/7, 2011 at 17:25
9
Basically, I want to do some preventative maintenance. There are certain third-party libraries that I'd like to prevent being included as references in a certain project. Is there a way you can spe...
4
Solved
I am trying to understand how references and Box<T> work. Let's consider a code example:
fn main() {
let x = 5;
let y = &x;
assert_eq!(5, x);
assert_eq!(5, *y);
}
In my imagination,...
Trench asked 24/1, 2020 at 13:33
10
I am faced with a problem that gives me this error:
A circular reference has been detected when serializing the object of
class "App\Entity\User" (configured limit: 1)
I have an Enterpr...
Concede asked 10/12, 2019 at 13:34
3
Solved
I am using Visual Studio Community 2019 to write a new serial port downloader program. I am relatively new to C# but have had to maintain a large-ish c# application that also uses the serial port t...
Spectroheliograph asked 8/8, 2022 at 16:33
5
Solved
Is it possible in Google Spreadsheets to reach the value of the cell just above?
Meaning: In one cell A2 I want to display the value from the cell above, that is A1. Not because it is that coordin...
Artimas asked 3/10, 2014 at 12:10
2
Solved
I know that void& is invalid. But, are there any other types, that are non-referenceable?
3
Solved
Quote from ( Safe in C# not in C++, simple return of pointer / reference, answer 3) by Eric lippert.
Also, note that it is not any reference to the Person object that keeps it alive. The referen...
10
Solved
vector<int> v;
v.push_back(1);
v.push_back(v[0]);
If the second push_back causes a reallocation, the reference to the first integer in the vector will no longer be valid. So this isn't safe...
Erbium asked 13/9, 2013 at 14:27
9
Solved
I'm getting the following exception when trying to call GetDatabase method of the MongoClient class after adding a new configuration using VS config. manager:
Could not load file or assembly 'Syste...
Phio asked 21/7, 2020 at 16:41
8
In my component I have declared some data:
data() {
return {
defaultValue: {json object with some structure},
activeValue: {}
...
And within the component I assign defaultValue to activeValue:...
Jigsaw asked 11/7, 2020 at 10:13
3
Solved
I am passing some weakrefs from Python into C++ class, but C++ destructors are actively trying to access the ref when the real object is already dead, obviously it crashes...
Is there any Python C...
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