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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votes
2answers
113 views
A doubly linked list implementation using C++ smart pointers
I am new to "modern" C++ and decided to learn about smart pointers by implementing a doubly linked list.
I have a few problems with this code: Should the tail pointer be a weak pointer? Should the ...
4
votes
1answer
43 views
Linked List simple implementation
I made a simple linked list in C with the following functionalities:
Create(creates the list); Find(searches for an element in the list); Insert(inserts a value at the beginning of the list); Destroy(...
3
votes
1answer
59 views
C++ lock wrapper class around pointer
I have created a class which wraps pointers and behaves like a pointer would behave, minus a few cases. It is a lock wrapper class which simply locks before usage of the pointer and unlocks once the ...
0
votes
1answer
52 views
RAII object for releasing pointer with arbitrary function
The following class is a sort of "smart pointer" that can be used for automatically releasing pointers:
...
3
votes
2answers
82 views
shared_ptr code implementation
I have never used std::shared_ptr before and I don't really know how this smart pointer actually works but I decided to create one to verify my knowledge. Here is my code :
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1
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1answer
47 views
List implementation with shared_ptr using C++11
I wrote list, which I think is more elaborate than usual. I would like to ask you for some tips, criticisms, and general feedback about my code.
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4
votes
1answer
139 views
Find the first occurrence of a substring in a string
This is a simple version from the function strstr. It returns the address of the first occurrence of the substring s2 in s1. I want to know possible problems in the code, and how to improve it, in ...
0
votes
1answer
32 views
Implementation of the binary search algorithm [closed]
This is my first implementation the binary search algorithm. I have tested it and so far it is okay. But I need an experienced eye to review the code and recommend best practices.
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3
votes
1answer
35 views
Exercise to create an insertString function to linked-list
Working from 'Programming in C' by Kochan. I'm on an exercise in the chapter 'Pointers'.
This was the exercise:
'Write a function called insertEntry() to inset a ...
2
votes
0answers
81 views
Intrusive weak pointer
WeakPtr can point to any object provided it inherits from WeakBase. So, for example, you could use it to observe an object ...
5
votes
2answers
79 views
NamedPoint class using unique_ptr for members
After reading this old article from 2001 I have tried to implement the class from it using unique_pointer.
An author's claim is that C++ is not appropriate for ...
6
votes
1answer
164 views
Using pointers and type cast to break up integers into byte array
Usually I don't start using pointers for a few microseconds here and there.
But with this implementation I started getting results of factor 2.
...
1
vote
1answer
47 views
Using a map of shared_ptr instead of single pointers as class members
I'm working on a node.js bindings for libcurl. As libcurl accepts many callback functions as options (like CURLOPT_READFUNCTION for example), I had to store their respective javascript callbacks ...
11
votes
2answers
509 views
Beep-beep I'm a car factory
I have implemented to following generic factory in C++11 using smart pointers and I would like to get some feedback about it.
(Please note that I can't use C++14)
Due to company policies I have to ...
4
votes
1answer
45 views
Polymorphic pointers-to-functions whose parameters are void pointers as arguments in C
My question is about this sort of table that's simplified here. Often, I find myself putting this element, (int (*)(const void *, const void *))&strcmp for <...
2
votes
1answer
89 views
Pointer lists for a C++ garbage collector
The problem
My intention is to have a class A and class B. class B has a ...
4
votes
2answers
122 views
Doubly linked list reimplemented with smart pointers
I need some suggestions on my reimplementation of a doubly linked list with smart pointers since I'm new to smart pointers in C++.
I read some docs on smart pointers and found out there are ...
-3
votes
1answer
50 views
Creating a struct
Mat told me to create a struct
create a struct for the individual commands and arguments. It should
have something like the "executable" name, number of args and arg
list. Create a few ...
0
votes
1answer
26 views
C function for copying array into matrix
I want a matrix that can grow dynamically and build up a structure in RAM as input arrives from standard input och terminal (shell). First I tried with a matrix like ...
6
votes
2answers
162 views
An optional<T> implementation
This is an implementation of optional<T> from C++17, it is mostly standard conforming.
I'm looking for a review on efficiency, correctness and performance.
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0
votes
1answer
65 views
Shell command line program
I have refactored a for loop into a function. I'm still a beginner at using C utility functions such as strtok, ...
4
votes
1answer
83 views
Avoiding pointers in this C++ linked list
As I know it is not good idea to have so many pointers in c++ code.
But I have written this simple implementation of linked list in c++ and there are many pointers in it, how can I improve that?
Also ...
1
vote
1answer
79 views
Operator Oveloading: “+” and “==” for two classes
I have one class Number (base class) and two child class Fraction and ...
6
votes
3answers
125 views
View programming pattern in C++ without raw pointers
I'm trying to achieve, for lack of a better term, a "view" pattern in C++. It's probably most comparable to "views" in the Database world, where one can make a query, and then perhaps aggregate the ...
-1
votes
1answer
53 views
&(array[index]) vs (array + index) [closed]
So I'm working with a function that returns a pointer to a list item. Right now, I'm using:
...
4
votes
2answers
129 views
Generate all permutations in C
I have written code for generating all the permutations in C as explained here. How can the code be optimized? Are there any memory leaks?
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4
votes
1answer
196 views
(C++14) Handling state in C-style function pointer callbacks
I'm having some issues coming up with a sensible solution for using shared state in a C-style function pointer. I am using GLFW to handle my OpenGL context and have created a thin wrapper around all ...
2
votes
0answers
60 views
Transform and transpose byte[] of 32bit image data in 24bit array image data
I would like to know if someone can think about a better solution for doing this stuff.
I have an array of raw bitmap data in 32bit format (RGBA). I need to transform and transpose this array into a ...
2
votes
2answers
991 views
ShoppingCart and Item Classes
I've built a class for an e-commerce Item, and the ShoppingCart class for checkout functions.
The thing I'm most concerned ...
3
votes
1answer
138 views
Overloading operator ->* for smart pointers
I am implementing a smart pointer class template and I want to overload operator ->* (even if it’s rarely done). I came across Scott Meyer’s article Implementing ...
5
votes
2answers
105 views
1
vote
2answers
130 views
Read characters from stdin into an resizeable array
As first steps in C, I'm trying to write a program that reads from stdin into an array allocated on the free store, until an exclamation mark ! is entered. The ...
3
votes
1answer
24 views
Given a string, print another one without a given char
My aim is to write a C program (I must create a function) that, given a string and a character, returns another string without the given char value.
For example: ...
6
votes
2answers
154 views
Fixed-Size Memory Pool
I've been reading about Memory Pools since I came across them in the book Game Programming Complete 4th Edition, and I decided to try and spin my own since I didn't quite understand how the one they ...
4
votes
2answers
314 views
Memory management for Red-Black Tree
I've written this program yesterday, and I was reminded why I dreaded C++ before turning to Java: pointers and associated terms (like destructors, initializations and copy/move constructors) are ...
3
votes
1answer
199 views
Efficient C++ Resource Manager
This is my final attempt of making an efficient ResourceManager class, which takes care of allocating OpenGL objects (like Shader, Textures, Meshes, ...). It stores ...
-3
votes
2answers
75 views
Array to function to int arithmetic
I want to get the value of an integer from within a struct pointer. Simply: int cool = *(*(&(coolPtr->map)) + x); can this be simplified? The rest of the ...
1
vote
2answers
343 views
C++ Winsock HTTP Request Library
I'm trying to write a HTTP Request library for practice with Sockets and C++ in general. I created a seperate function to setup the struct needed to Connect() however it is now breaking and I cant ...
3
votes
3answers
1k views
DeepPtr: a deep-copying unique_ptr wrapper in C++
When using the pimple idiom it is necessary to represent your "impl" as a forward declared pointer in the header file. This necessitates a lot of boilerplate code to implement the rule of five.
...
6
votes
1answer
212 views
Random String Generation - Base36 and optimization
This is some fairly heavily optimized C#. Aside from reading like C++ code due to all of the pointers, does this pass sanity checks, and is there any way to improve it, while keeping its speed (or ...
7
votes
1answer
181 views
Cancellable futures, interaction with throwing destructors
I'm reinventing std::future from scratch (for an upcoming talk). I'd like to incorporate as many of the latest and most likely-to-succeed proposals as possible, and ...
4
votes
1answer
211 views
0
votes
1answer
133 views
Refactor C# unsafe method [closed]
I have the following two unsafe methods that I would like to refactor:
...
4
votes
1answer
117 views
Passing variable pointer as string to another function
With Delphi 7 I need to create a TStream variable and use/free it in another part of the code. Unfortunately it cannot be passed as "normal" parameter.
I created a ...
8
votes
3answers
458 views
Generic stack in C
I tried to implement a generic stack in C using void pointers and tried to keep it as simple as possible by delegating all responsibility to the caller of the ...
5
votes
2answers
113 views
21
votes
5answers
1k views
Inventorizing the universe
I recently started re-factoring a project I hadn't touched in many months.
The original purpose was to be an inventory management system for a game I played, Ogame. In this game you play inside a ...
3
votes
2answers
70 views
Linked list insertion
I have written the code below for inserting an element at the position specified by the user.
I have seen the code in multiple books, and they have always used two pointers in the function that ...
8
votes
2answers
161 views
Smart pointer or how not to leak a pointer
Wrote a couple of blog articles about smart pointers.
Unique Pointer
Shared Pointer
Constructors for Smart Pointers
So I suppose it time to get the result reviewed.
This is not supposed to be a ...
3
votes
2answers
1k views
Finding the min and max of an array, using a pointer
Modify the maxmin.c program so that the max min function uses a
pointer instead of an integer to keep track of the current position in
the array.
maxmin.c
...
