Questions tagged [pointers]

In computer science, a pointer is a programming language data type whose value refers directly to (or "points to") another value stored elsewhere in the computer memory using its address.

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2
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4answers
98 views

I'm deallocating objects created but I'm unsure whether my code is leaking memory or not

I have a simple application which requires the user to input details about students and their grades. I have two different classes Student and ...
2
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1answer
61 views

Basic LinkedList implementation [closed]

Please bear in mind, I've only started learning c++ this week, and as such, would love topic suggestions for which I should master, to become better at C++. Below, is my code for a singly linkedlist. ...
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0answers
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A lightweight version of std::shared_ptr<T> V2

This is a lightweight version of std::shared_ptr<T> called res_ptr<T> This post is a continuation of: A lightweight ...
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3answers
116 views

Simple shared pointer implementation in a single threaded environment (revised)

std::shared_ptr does not stop you from having the same resource managed by multiple control-blocks (and thus independent sets of shared-pointers), even though it is ...
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2answers
291 views

A lightweight version of std::shared_ptr<T>

I wrote a simple lighter version of std::shared_ptr<T> called res_ptr<T>. ...
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1answer
33 views

Finding frequency of unique array elements by using single pointer [closed]

I am supposed to find the frequency of the unique array elements of a character array via a user defined function like int *unique(char *s), which takes a pointer to a character and returns a pointer ...
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2answers
757 views

C - Learning Linked Lists, Pointer Manipulation - Store some ints, print and free memory

I'm learning C, and wrote this program outside of my assignments in order to practice pointer manipulation and data structures, step by step. I want to ensure that this program follows well known ...
4
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0answers
96 views

Polymorphic deleter for unique_ptr

There is a basic difference in the way C++ manages the deleter for std::unique_ptr and std::shared_ptr, mainly for allowing ...
4
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2answers
72 views

Replace part of the string with n size with string of m size

I wanted to understand memory and pointers better before I endeavour into file path manipulations for larger project. This is simple replace part of the string test function that I need to rewrite ...
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0answers
109 views

Parse DOM Tree in C++ [closed]

Problem I need to read custom text input of a sample document object model (DOM) represented in a json format from a file and store it in a struct I've defined as ...
2
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1answer
119 views

A heap-allocated texture class for a console renderer

I am working on a console renderer and I want a heap-allocated dynamic texture class. Since I am quite new to C++, I just want to check the memory management, if I destroy all pointers correctly etc. ...
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0answers
53 views

Helper to convert arbitrary function into a custom deleter

If you want to use a custom deleter in unique_ptr you either have to pass a functor or the signature of a delete function as template argument. If you have a ...
2
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0answers
58 views

Managed Vulkan API Wrapper (create/destroy an instance)

I'm trying to follow this Vulkan API tutorial and have come up with an implementation that I don't completely loathe. The VkUtf8StringArray class is my least ...
3
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0answers
93 views

Rich data types - boolean object

Context You can probably skim most of this, it's unlikely to be useful for a review and is just for background info. Also download the files I've tried to create a ...
4
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0answers
47 views

Generalizing std::shared_ptr for all handle-types, even non-pointers

I created this shared pointer mainly to use it as RAII for handles that have to be shared between classes or threads. For pointers: It supports raw pointers and pointer to classes and arrays and also ...
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1answer
118 views

AVL tree implementation using shared_ptr/unique_ptr

I have implemented an AVL tree using shared_ptr. I know that there is an overhead regarding using shared_ptr and instead a unique_ptr could be used. But the thing is that my node contains also a ...
5
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1answer
252 views

My unique_ptr implementation

This is my simple unique_ptr implementation. Anything that could be improved upon or should be added? ...
3
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2answers
149 views

Merge Sort C++11 C++17

Question Any way I can optimize this further using new C++11 or C++17 features? Would also like feedback on my variable naming, memory management, and style (notice my placement of ...
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3answers
1k views

Array Dynamic resize in heap

I have answered a Question in Stackoverflow link. a) Create a function called resize that can be used to increase the size of integer arrays dynamically. The function takes three parameters. ...
3
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2answers
136 views

Mario Party Snake and Ladders Board

Context Was inspired from this LeetCode post to do my own System Design exercise of the common Snake and Ladders problem. As I was writing the code Mario Party kept coming to mind so I added a little ...
5
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1answer
76 views

Implementation of std::experimental::observer_ptr (library fundamentals TS v2)

I made an implementation of std::experimental::observer_ptr (library fundamentals TS v2). observer_ptr basically behaves like a normal pointer and does no ...
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3answers
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malloc in main() or malloc in another function: allocating memory for a struct and its members

When initializing a struct in C, we can allocate memory inside the main function or within another function and return a pointer to the newly created struct. This ...
4
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0answers
249 views

C++ shared_ptr memory pool

I put together this little memory pool class to help avoid the costs associated with heap allocation and deallocation of objects that are frequently created & destroyed. It creates C++ standard <...
4
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2answers
94 views

Simple device (fancy) pointer implementation

device_raw_ptr is a simple fancy pointer. It essentially wrap pointers to GPU memory. It's sole purpose is to separate out host pointers from device pointers, i.e. ...
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0answers
86 views

Writing Go object code that respects Go guidelines

I'm learning Go and I wrote this for a programming challenge. It is working (building and running) but I feel the code is not what Go code should be: Am I using the ...
5
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3answers
797 views

Stack Interview Code methods made from class Node and Smart Pointers

Mainly looking for feedback on my use of smart pointers to implement a standard stack. For interview level production code I have also include a namespace and asserts to test my class, let me know if ...
5
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1answer
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wrapper for common subset of auto_ptr and unique_ptr API

I read an interesting old question on the Software Engineering SE about how to transition away from std::auto_ptr. So I wrote a wrapper around the common subset of <...
2
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1answer
46 views

Queue Interview Code basic methods made from struct Node optimized

Using feedback from my previous implementation I'm writing a very simple Queue of struct Nodes with only these methods get_front(), get_back(), pop_front(), push_back(), and a ostream friend method. I ...
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2answers
70 views

shared_ptr basic implementation for non array types

This is an implementation to simulate the basic functionality of c++ shared_ptr. This doesn't provide features like custom deleter and make_shared(). I would really appreciate any feedback to improve ...
3
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3answers
118 views

Linked List Interview Code methods, runtime, and edge cases refactored

In my previous post I had a number of steps given to me from the accepted answer on how I can write more production ready code. In this post I want this code to be reviewed as near production code I'd ...
2
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3answers
104 views

Queue Interview Code basic methods made from struct Node

Thanks for all the feedback, I optimized the code here. Here I'm Writing a very simple Queue of struct Nodes with only these methods get_front(), ...
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2answers
124 views

Binary Search Tree implementation with unique pointers

I have implemented a binary search tree using templates and unique_ptr in C++ 11. At present, only insertion and deletion are implemented. Please provide your feedback for improvements. ...
4
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2answers
1k views

Implementing a binary tree in C++ using “std::unique_ptr”

I have implemented a simple binary search tree class in C++ using std::unique_ptr objects to hold the pointers to each node. In doing this I have come across a ...
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1answer
79 views

Passing objects atomically across threads without locks or data races for audio synchronization

I am learning about one of the hardest parts of Audio development: the synchronization between the audio thread and the GUI thread. Per the discussion here https://forum.juce.com/t/timur-doumler-...
6
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1answer
79 views

Smart pointer like implementations

For educational purposes I implemented standard library smart pointers like class templates. They are definitely not a full replacement for the library classes but I'd like to get some comments on the ...
8
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3answers
1k views

Binary Search Tree implementation using smart pointers

I have implemented below code for binary search tree implementation using shared pointer. At present, I have considered only integers. It supports insertion and deletion of values. Also, a print ...
6
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1answer
145 views

unique_ptr basic implementation for single objects

This is an implementation to simulate the basic functionality of unique_ptr. This doesn't provide features like custom deleter and ...
3
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0answers
43 views

Basic Qt5 UI with button [closed]

I have the following Qt class: mainwindow.h class MainWindow : public QWidget { Q_OBJECT QPushButton* m_button; public: explicit MainWindow(); }; mainwindow....
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2answers
1k views

C++11 smart pointer 'library'

Edit: NOTE I'm a C++ "beginner" still in undergrad trying to teach myself modern C++ (because they don't do that in uni) so I'm sure this is riddled with errors that I am unaware of. Made a subset of ...
3
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1answer
158 views

value_ptr<T> - a C++11 header-only, deep-copying smart pointer that preserves value semantics for polymorphic and undefined types (updated)

My previous iteration was here. I've since finalized the concept as described in the title, and would appreciate any feedback GitHub Link Introduction: ...
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1answer
94 views

Simple Object Management System

I am attempting to create a fast & robust object management system that allows adding, removing and retrieving objects from a "scene". I am trying to wrap my head around the best way to do this ...
5
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1answer
645 views

C++ grades calculator using pointers

I have a program to calculate grades that uses pointers and I am trying to figure out if I did it right and if there are any problems with my implementation. I'm trying to get a more firm grasp on ...
6
votes
1answer
146 views

Implementing a doubly linked list with smart pointers

I've been learning Rust for the past few days and I just passed the "Smart Pointers" chapter. To check what I've learned I've decided to implement a doubly linked list. My question is, is this ...
1
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1answer
987 views

C++ wrapper for GLFW window object

I'm creating a window class in C++ to provide a bit of abstraction for a GLFW window. window.h ...
0
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2answers
914 views

C++ - Hash map implementation using smart pointers

I am trying a simple Hash Map implementation in c++. I have used this and this as reference. The implemented design uses a class HashEntry to manage individual key-...
3
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2answers
260 views

Circular / Cyclic Buffer implementation

I am learning circular / cyclic buffer using this link. Here is the code that I have written so far: ...
2
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0answers
170 views

Yet Another Non-Intrusive Reference Counted Smart Pointer Implementation

I needed a reference counted smart pointer for my project, and for some reason early in my project, I decided that I did not like the std::shared_ptr. I can't ...
1
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1answer
327 views

Queue implementation using unique_ptr

I am trying out different data structures to learn more about smart pointers. I have created a queue implementation which has push, ...
2
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1answer
107 views

Linked List using templates and smart pointers

I have an implementation of Linked List with push, pop, ...
3
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0answers
91 views

Generic stack data structure using linked list and smart pointers

I have decided to rewrite what I did here, following the suggestions to use smart pointers. I will rewrite the other data structures as well using smart pointers where appropriate. I just want to see ...