Top "Reference" questions

A reference is a value that enables a program to indirectly access a particular datum, such as a variable or a record, in the computer's memory or in some other storage device.

Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?

1) When an array is passed as an argument to a method or function, is it passed by reference, or by …

php arrays reference pass-by-reference pass-by-value
Difference between const reference and normal parameter

void DoWork(int n); void DoWork(const int &n); What's the difference?

c++ parameters reference constants
Why can't I reference my class library?

I have a solution that contains a website and a class library in Visual Studio 2008. I then have another web …

c# visual-studio-2008 resharper reference
Is null reference possible?

Is this piece of code valid (and defined behavior)? int &nullReference = *(int*)0; Both g++ and clang++ compile it without …

c++ reference null language-lawyer
Meaning of "referencing" and "dereferencing" in C

I read different things on the Internet and got confused, because every website says different things. I read about * referencing …

c pointers reference dereference
Pointer vs. Reference

What would be better practice when giving a function the original variable to work with: unsigned long x = 4; void func1(…

c++ variables pointers reference
Cannot find reference 'xxx' in __init__.py - Python / Pycharm

I have a project in Pycharm organized as follows: -- Sources |--__init__.py |--Calculators |--__init__.py |--Filters.py |…

python reference coding-style pycharm
Reference an Element in a List of Tuples

Sorry in advance, but I'm new to Python. I have a list of tuples, and I was wondering how I …

python list reference element tuples
Why are arrays of references illegal?

The following code does not compile. int a = 1, b = 2, c = 3; int& arr[] = {a,b,c,8}; What does the C++ …

c++ arrays reference
How to return a class object by reference in C++?

I have a class called Object which stores some data. I would like to return it by reference using a …

c++ reference segmentation-fault return-by-reference