All Pointers Solutions on Gang of Coders

Total of 288 Pointers Solutions

NULL pointer with boost::shared_ptr?

C++Boost Null Pointers Shared Ptr

C++ Array of pointers: delete or delete []?

C++Arrays Pointers Delete Operator

How to create two classes in C++ which use each other as data?

C++Class Pointers Header Files

Why is the dereference operator (*) also used to declare a pointer?

C++Pointers Syntax Dereference Notation

Why would code explicitly call a static method via a null pointer?

C++Pointers Static Members Undefined Behavior Dereference

Do all pointers have the same size in C++?

C++Pointers Language Lawyer Void Pointers

What does malloc(0) return?

C Linux Pointers Malloc Realloc

Does Java have pointers?

X does not implement Y (... method has a pointer receiver)

Pointers Go Methods Interface

Why does the arrow (->) operator in C exist?

C Pointers Dereference

Function pointers and address of a function

C Function Pointers Function Pointers

dereferencing a pointer when passing by reference

C++Pointers Reference

initial value of reference to non-const must be an lvalue

C++Pointers Reference

How to get the pointer of return value from function call?

Printing pointers in C

Placement of the asterisk in Objective-C

Objective C Pointers

Simulating Pointers in Python

Python Pointers

Function pointer as a member of a C struct

C Function Pointers

What is the difference between far pointers and near pointers?

What is uintptr_t data type

C++Pointers Types

Differences between unique_ptr and shared_ptr

C++Pointers C++11 Shared Ptr Unique Ptr

In C, are arrays pointers or used as pointers?

C Arrays Pointers

How to print variable addresses in C?

C Pointers Memory Address

Increment void pointer by one byte? by two?

C/C++ int[] vs int* (pointers vs. array notation). What is the difference?

C++C Arrays Pointers Standards

Dereferencing a pointer to 0 in C

C Pointers Memory Dereference

Why can't the interface be implemented with pointer receivers

Pointers Interface Go

Array-syntax vs pointer-syntax and code generation?

C Arrays Pointers Pointer Arithmetic Errata

Arrow operator (->) usage in C

C Pointers Syntax

What is double star (eg. NSError **)?

C Objective C Cocoa Pointers Multiple Indirection

How do I create an array of pointers?

C++Arrays Pointers

Smart pointers/safe memory management for C?

C Memory Pointers C99 Smart Pointers

Should I explicitly cast malloc()'s return value?

C Pointers Casting

How to include a dynamic array INSIDE a struct in C?

C Pointers Arrays Struct Memory Management

When is it valid to access a pointer to a "dead" object?

C Pointers Language Lawyer Undefined Behavior

Pointers as keys in map C++ STL

C++Pointers Map Stl

How to printf a memory address in C

C Pointers Printf Memory Address Unary Operator

Does the C standard permit assigning an arbitrary value to a pointer and incrementing it?

C Pointers Language Lawyer Pointer Arithmetic

Is there any reason to check for a NULL pointer before deleting?

C++Pointers Null Delete Operator

Pointer vs Variable speed in C++

C++Performance Variables Pointers

Arrow Operator vs. Dot Operator

C Pointers Structure

clearing a vector of pointers

C++Pointers Memory Leaks Vector

Write-Only pointer type

C++C Pointers Readonly Const Correctness

Using C-string gives Warning: "Address of stack memory associated with local variable returned"

C++Pointers C Strings

Invoking struct function gives "cannot refer to unexported field or method"

Pointers Struct Go

Why are `&array` and `array` pointing to the same address?

C++Arrays Pointers

Is it possible to get a pointer to one subobject via a pointer to a different, unreleated subobject?

C++Pointers Language Lawyer C++17 Offsetof

What is the difference between str==NULL and str[0]=='\0' in C?

C Pointers Gcc Cstring

Why does printing a pointer print the same thing as printing the dereferenced pointer?

Pointers Rust Dereference

How to cast self to UnsafeMutablePointer<Void> type in swift

Swift Pointers Casting Unsafe Pointers

Pointer to class data member "::*"

C++Class Pointers C++ Faq

How expensive is it to dereference a pointer?

What does this error mean: "error: expected specifier-qualifier-list before 'type_name'"?

C++C Pointers Struct

What is ** in C++?

Are all data pointers the same size in one platform for all data types?

C Pointers Types

Should one really set pointers to `NULL` after freeing them?

C Pointers Free

A pointer to 2d array

C++Arrays Pointers Multidimensional Array

What is the difference between char a[] = ?string?; and char *p = ?string?;?

Address of a temporary in Go?

Pointers Return Go Temporary Rvalue

My char pointer points to invalid value after being cast from int*

C Arrays Pointers

Pointer arithmetics with two different buffers

C++Pointers Language Lawyer Pointer Arithmetic

NULL vs nullptr (Why was it replaced?)

C++Pointers Null Nullptr

Class members that are objects - Pointers or not? C++

C++Memory Pointers Class Design Member

Does dereferencing a pointer make a copy of it?

C++Pointers Dereference

Reference to non-static member function must be called

C++Pointers Reference

Different Pointer Arithmetic Results when Taking Address of Array

C Pointers Language Lawyer

Return array in a function

C++Arrays Pointers Function Return

Pointer vs. Reference

C++Variables Pointers Reference

What is the difference between char array and char pointer in C?

C Arrays Pointers

How to pass objects to functions in C++?

C++Pointers Pass by-Reference Pass by-Value C++ Faq

Are there benefits of passing by pointer over passing by reference in C++?

C++Pointers Parameter Passing Pass by-Reference

size_t vs. uintptr_t

C Pointers Size T

Is the sizeof(some pointer) always equal to four?

C++C Pointers Memory Sizeof

Is an array name a pointer?

C Arrays Pointers

Passing by reference in C

C Pointers Pass by-Reference

Which kind of pointer do I use when?

C++Pointers C++11 Smart Pointers C++ Faq

Correct format specifier to print pointer or address?

C Pointers Format Memory Address

Should I use static_cast or reinterpret_cast when casting a void* to whatever

C++Pointers Static Cast Reinterpret Cast

Why is the asterisk before the variable name, rather than after the type?

C Pointers Variables Naming Conventions

Difference between char* and const char*?

C Pointers Constants

Constant pointer vs Pointer to constant

C Pointers Constants

How come an array's address is equal to its value in C?

C Pointers Arrays

What exactly is a C pointer if not a memory address?

C Pointers Memory Address

What are the differences between a pointer variable and a reference variable in C++?

C++Pointers Reference C++ Faq

Why is 'this' a pointer and not a reference?

C++Pointers Reference This C++ Faq

C isn't that hard: void ( ( f[] ) () ) ()

C Parsing Pointers Function Pointers Void Pointers

How do pointer-to-pointers work in C? (and when might you use them?)

Returning an array using C

C Arrays Pointers Char

Can I use if (pointer) instead of if (pointer != NULL)?

C++Pointers If Statement Null Null Pointer

Value receiver vs. pointer receiver

Function Pointers Go

What do people find difficult about C pointers?

How to cast/convert pointer to reference in C++

C++Pointers Casting Reference Type Conversion

Is it good practice to NULL a pointer after deleting it?

C++Pointers Null Dynamic Allocation

How do you pass a function as a parameter in C?

C Function Pointers Syntax Parameters

In C, why do some people cast the pointer before freeing it?

C Pointers Casting

Should I store entire objects, or pointers to objects in containers?

C++Stl Pointers

How do I do a literal *int64 in Go?

Pointers Go Struct Literals

Function Pointers in Java

Java Pointers Delegates Function Pointers

Why do C++ libraries and frameworks never use smart pointers?

C++Pointers Smart Pointers

"<type> is pointer to interface, not interface" confusion

Pointers Go Interface

C: differences between char pointer and array

C Arrays Pointers

What's the point of const pointers?

C++C Pointers Constants

constant pointer vs pointer on a constant value

C Pointers Constants

Declaring pointers; asterisk on the left or right of the space between the type and name?

When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?

C++Pointers Casting C++ Faq

Why is x[0] != x[0][0] != x[0][0][0]?

C++Arrays Pointers

C pointers : pointing to an array of fixed size

C Pointers Size

How does delete[] know it's an array?

C++Arrays Pointers New Operator Delete Operator

Pointer expressions: ptr++, ++ptr and ++*ptr

C++C Pointers Increment

What does `dword ptr` mean?

Assembly X86 Dword Pointers

Pointer to pointer clarification

Pointers in Python?

Python Pointers

How to explain C pointers (declaration vs. unary operators) to a beginner?

Passing references to pointers in C++

C++Pointers Reference

Does free(ptr) where ptr is NULL corrupt memory?

C Pointers Memory Management Null Free

What does "dereferencing" a pointer mean?

C++C Pointers Dereference

How can I use pointers in Java?

Java Pointers Unsafe

What exactly is nullptr?

C++Pointers C++11 Nullptr

Why are function pointers and data pointers incompatible in C/C++?

C++C Pointers Function Pointers

Can't understand this way to calculate the square of a number

C Arrays Pointers C99 Variable Length-Array

Why does the use of 'new' cause memory leaks?

C++Pointers Memory Leaks New Operator C++ Faq

What does Visual Studio do with a deleted pointer and why?

C++Pointers Visual Studio-2012 Memory Management Delete Operator

Create a pointer to two-dimensional array

C Arrays Pointers

error: ‘NULL’ was not declared in this scope

C++Gcc Pointers Null

Should I use char** argv or char* argv[]?

C Arrays Pointers Standards

Pointers, smart pointers or shared pointers?

Why aren't pointers initialized with NULL by default?

C++Memory Pointers Initialization

Why is address zero used for the null pointer?

C++C Memory Pointers

What can I use instead of the arrow operator, `->`?

How to declare std::unique_ptr and what is the use of it?

C++Pointers Std Unique Ptr

Difference between ptr += 1 and ptr++ in C

C Pointers Post Increment

What is the difference between std::reference_wrapper and a simple pointer?

C++Pointers C++11 Reference Reference Wrapper

Why do linked lists use pointers instead of storing nodes inside of nodes

C++Pointers Linked List

Why does this code segfault on 64-bit architecture but work fine on 32-bit?

C Pointers Segmentation Fault

Range references instead values

Pointers Reference Go

What is a "fat pointer"?

Can I call memcpy() and memmove() with "number of bytes" set to zero?

C++C Pointers Memcpy Memmove

How to increment a pointer address and pointer's value?

What's the point of having pointers in Go?

Placement of the asterisk in pointer declarations

C++C Pointers Declaration

Reason to Pass a Pointer by Reference in C++?

C++Pointers Reference

Typedef function pointer?

C++C Pointers Typedef

What makes this usage of pointers unpredictable?

Deleting a pointer in C++

C++Pointers Delete Operator

How do I use arrays in C++?

C++Arrays Pointers Multidimensional Array C++ Faq

What is a smart pointer and when should I use one?

C++Pointers C++11 Smart Pointers C++ Faq

C pointer to array/array of pointers disambiguation

C Arrays Pointers Variable Declaration

In Go HTTP handlers, why is the ResponseWriter a value but the Request a pointer?

C# Store functions in a Dictionary

C#Function Pointers Dictionary

Correct way of declaring pointer variables in C/C++

C++C Pointers Coding Style

How to compare pointers?

What is the point of function pointers?

C++C Function Pointers C++ Faq

Can a pointer to base point to an array of derived objects?

Testing pointers for validity (C/C++)

C++C Validation Pointers Null

Difference between function arguments declared with & and * in C++

C++Function Pointers Pass by-Reference

How does free know how much to free?

C Size Pointers Free

Is it good practice to free a NULL pointer in C?

C Pointers Memory Management

error: invalid initialization of non-const reference of type ‘int&’ from an rvalue of type ‘int’

C++Pointers Reference

Are Python variables pointers? Or else, what are they?

Python Pointers Variables Identifier

How many levels of pointers can we have?

C++C Pointers Language Lawyer Limit

Is it possible to initialize a C pointer to NULL?

C Pointers Initialization

What is the difference between a C# Reference and a Pointer?

C#Pointers Reference

What are the barriers to understanding pointers and what can be done to overcome them?

What is array to pointer decay?

C++C Arrays Pointers

What is an opaque pointer in C?

C Pointers Opaque Pointers

C++ pass an array by reference

C++Arrays Pointers Reference Pass by-Reference

Pointers vs. values in parameters and return values

Meaning of int () (int ) = 5 (or any integer value)

C++Pointers Function Pointers

Regular cast vs. static_cast vs. dynamic_cast

C++Pointers Casting

Why should I use a pointer rather than the object itself?

C++C++11 Pointers C++ Faq

Is it a good idea to typedef pointers?

C++C Pointers Typedef Conventions

Understanding and relationship between Box, ref, & and *

When to use references vs. pointers

C++Pointers Reference

How is "int* ptr = int()" value initialization not illegal?

C++Visual C++Pointers Initialization Built in-Types

Why are references not reseatable in C++

C++Pointers Reference Language Design

Is a pointer with the right address and type still always a valid pointer since C++17?

C++Pointers C++14 Language Lawyer C++17

Checking if a pointer is allocated memory or not

Why use pointers?

Why is a point-to-volatile pointer, like "volatile int * p", useful?

C Pointers Volatile

Meaning of *& and **& in C++

C++Pointers Syntax Reference Symbols

const char* and char const* - are they the same?

C++Pointers Constants

"int *nums = {5, 2, 1, 4}" causes a segmentation fault

C Arrays Pointers

Addresses of two char pointers to different string literals are same

C Pointers Literals

How to convert const char* to char* in C?

C Pointers Const Char

Print the address or pointer for value in C

C Pointers Memory Address

Does 'auto' type assignments of a pointer in c++11 require '*'?

C++Pointers C++11 Auto

What are the rules for casting pointers in C?

C Pointers Casting

Reference type in C#

C#.Net Pointers

What does P::************ mean in Boost assert.hpp file?

C++Pointers Boost

C++: difference between ampersand "&" and asterisk "*" in function/method declaration?

C++Pointers Reference

Passing a 2D array to a C++ function

C++Arrays Pointers Multidimensional Array

Why are NULL pointers defined differently in C and C++?

C++C Pointers Null

Exceptions to array decaying into a pointer?

C Arrays Pointers

How to convert a 'string pointer' to a string in Golang?

String Pointers Go Type Conversion

Can I use NULL as substitution for the value of 0?

C++C Pointers Null Language Lawyer

Is NULL always false?

C Null Pointers

C Programming: malloc() inside another function

C Function Pointers Malloc

increment value of int being pointed to by pointer

C Pointers Increment Post Increment

When to use pointers in C#/.NET?

C#.Net Performance Pointers Unsafe

Does const-correctness give the compiler more room for optimization?

C++C Pointers Constants Const Correctness

With arrays, why is it the case that a[5] == 5[a]?

C Arrays Pointers Pointer Arithmetic

What is the difference between const int, const int const, and int const *?

C++C Pointers Constants C++ Faq

How does dereferencing of a function pointer happen?

C++C Pointers Function Pointers

When is an integer<->pointer cast actually correct?

C++C Pointers Casting

Passing pointers between C and Java through JNI

Java Pointers Java Native-Interface Cuda

How to use an iterator?

C++Pointers Vector Iterator Using Statement

What exactly is meant by "de-referencing a NULL pointer"?

What is the function of an asterisk before a function name?

C Function Pointers

Duplicating objects in Java

Java Variables Object Pointers Reference

Meaning of "referencing" and "dereferencing" in C

C Pointers Reference Dereference

Why not use pointers for everything in C++?

C++Pointers Heap Memory Stack Memory

How to avoid memory leaks when using a vector of pointers to dynamically allocated objects in C++?

C++Stl Pointers Vector Derived

What is the size of a pointer?

C++Pointers Sizeof

Why doesn't polymorphism work without pointers/references?

C++Pointers Polymorphism Virtual

Pointers to pointers vs. normal pointers

Deleting Objects in JavaScript

Javascript Pointers Object Memory Management Garbage Collection

Why can a string be assigned to a char* pointer, but not to a char[] array?

C String Pointers Initialization Reusability

How to access the contents of a vector from a pointer to the vector in C++?

C++Pointers Vector

how does the ampersand(&) sign work in c++?

C++Pointers Reference Ampersand

How to find the 'sizeof' (a pointer pointing to an array)?

C Arrays Pointers Sizeof

Pointers in C: when to use the ampersand and the asterisk?

Difference between passing array, fixed-sized array and base address of array as a function parameter

C++Arrays Pointers

Pointer values are different but they compare equal. Why?

C++Pointers Multiple Inheritance

Is it legal to compare dangling pointers?

C++Pointers Language Lawyer Dangling Pointer

difference between a pointer and reference parameter?

C++Pointers Reference Object Slicing

Returning a pointer to a vector element in c++

C++Pointers Containers Iterator

gsl::not_null<T*> vs. std::reference_wrapper<T> vs. T&

C++Pointers Cpp Core-Guidelines Guideline Support-Library

How can I get the size of an array from a pointer in C?

C Memory Management Pointers Malloc

What is the reason for using a double pointer when adding a node in a linked list?

C Pointers Linked List

Pointer to incomplete class type is not allowed

C++List Class Pointers Iterator

What is the difference between returning a char* and a char[] from a function?

C String Pointers

How do I modify a pointer that has been passed into a function in C?

C Function Pointers Parameters Pass by-Value

What's the difference between a null pointer and a void pointer?

When should I use raw pointers over smart pointers?

C++Pointers Boost Smart Pointers

Length of array in function argument

what's the point of std::unique_ptr::get

C++C++11 Pointers Unique Ptr

What is the difference between NULL, '\0' and 0?

C Pointers Null

Post-increment on a dereferenced pointer?

C Pointers Operator Precedence

Pointer to a map

Pointers Dictionary Go

How can I check if char* variable points to empty string?

C Pointers Char

Free memory allocated in a different function?

C Pointers Memory Management Malloc Free

C++ inserting unique_ptr in map

C++Pointers Map Stl Unique Ptr

Are there pointers in javascript?

Javascript Pointers

Does Function pointer make the program slow?

C Pointers Function Pointers

Why do some people prefer "T const&" over "const T&"?

C++Syntax Pointers Reference Types

Javascript pointer/reference craziness. Can someone explain this?

Javascript Pointers Reference

Dot (".") operator and arrow ("->") operator use in C vs. Objective-C

Objective C C Pointers Dot Operator

Is NULL always zero in C?

C Pointers Null Zero

What happens to memory after '\0' in a C string?

C String Pointers Malloc C Strings

How to get the real and total length of char * (char array)?

C++C Arrays Pointers Char

Are pointers considered a method of calling by reference in C?

C Pointers Pass by-Reference

When to use pointers

Pointers Struct Go

Are there any platforms where pointers to different types have different sizes?

C Pointers Sizeof

Proper way of casting pointer types

C++Pointers Casting Reinterpret Cast Static Cast

Efficiency: arrays vs pointers

C Arrays Pointers Performance Memory Access

Declaring array of int

C++Arrays Pointers Initialization

What is a dangling pointer?

C++Pointers Dangling Pointer

Dynamically allocating an array of objects

C++Memory Management Pointers Destructor Copy Constructor

Function pointer as parameter

C++Function Pointers Function Pointers

C++ Returning Pointers/References

C++Pointers Return

What is the difference between char * const and const char *?

C Pointers Constants

Using pointers to remove item from singly-linked list

C Pointers Linked List

C vs C++ struct alignment

C++C Pointers Struct Object Layout

What does "int* p=+s;" do?

C++Arrays Pointers Unary Operator

Determine the size of a C++ array programmatically?

C++Arrays Pointers Memory Management

Is it possible to store the address of a label in a variable and use goto to jump to it?

C Pointers Label Goto Memory Address

Checking if this is null

C++Pointers Null

When should I use the new keyword in C++?

C++Pointers Reference New Operator Keyword

How do I properly map a `MagImageScalingCallback` using JNA?

Java Pointers Winapi Jna

In C, how would I choose whether to return a struct or a pointer to a struct?

C Pointers Struct Malloc

Convert iterator to pointer?

C++Stl Pointers Vector Iterator

Is it safe to delete a NULL pointer?

C++Pointers Memory Management Null Pointer Delete Operator

How to access a local variable from a different function using pointers?

C++C Pointers Local Variables

Why use double indirection? or Why use pointers to pointers?

Crash or "segmentation fault" when data is copied/scanned/read to an uninitialized pointer

C Pointers Segmentation Fault

Why does C++11 contain an odd clause about comparing void pointers?

C++C++11 Pointers Language Lawyer Comparison Operators

What does ((void (*)())buf)(); mean?

C Function Pointers Function Pointers

Why can't I convert 'char**' to a 'const char* const*' in C?

C Pointers Constants Const Correctness

Pointer Arithmetic

C Pointers Pointer Arithmetic

Are there pointers in php?

Difference between pointer to a reference and reference to a pointer

C++Memory Pointers Reference

In C, what does a variable declaration with two asterisks (**) mean?

How to assign pointer address manually in C programming language?

C Memory Pointers

Changing address contained by pointer using function

C Function Pointers

cpp / c++ get pointer value or depointerize pointer

Hiding nil values, understanding why Go fails here

Pointers Go Interface Null

C: pointer to struct in the struct definition

C Struct Pointers

Could I ever want to access the address zero?

C++C Memory Pointers