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Vash - A GDI+ Flash-Like Vector Animation Program

by Clayton Rumley

There are those who think I am crazy, and this just might be the proof.

Web Presentation, the Other Way Around

by Sergey Alexandrovich Kryukov

Another variant of the cross-platform replacement for all those office presentation applications in a single file, and now this file is JavaScript

Can QR Decomposition Be Actually Faster? Schwarz-Rutishauser Algorithm

by Arthur V. Ratz

Optimizing the performance of the large-sized matrices QR factorization and eigendecomposition, using Schwarz-Rutishauser algorithm

An Optimal Wagner-Fischer Algorithm For Approximate Strings Matching In Python And NumPy

by Arthur V. Ratz

Compute the Levenshtein distance of literal strings effectively by using the Wagner-Fischer (two matrix rows-based) algorithm.

Latest Articles

Understanding Vector Databases

by Nicolas DESCARTES

What are vector databases?

Web Presentation, the Other Way Around

by Sergey Alexandrovich Kryukov

Another variant of the cross-platform replacement for all those office presentation applications in a single file, and now this file is JavaScript

An Optimal Wagner-Fischer Algorithm For Approximate Strings Matching In Python And NumPy

by Arthur V. Ratz

Compute the Levenshtein distance of literal strings effectively by using the Wagner-Fischer (two matrix rows-based) algorithm.

Split Quick Sort a Multi-Threaded Sort

by spore123

This is a fast multi-threaded quick-sort based algorithm

All Articles

Vector

[tut 7] Drag & Drop points in lines

24 Jun 2016 by The Zakies

in this tut we will create a technique to enable the user to control points within a drawn line, by drawing circles around points of the line , when the user clicks a circle he would control the corresponding point.

[tut 8] Hand tool

29 Jun 2016 by The Zakies

we would create Hand_tool to pan through the drawing form, and we would use a custom cursor of open and closed hands

[tut 9] hand tool (part 2) navigator panel

3 Jul 2016 by The Zakies

we will continue the functionality of the hand tool with having a navigator panel which works as a map, we will also have a red rectangle which tells the user where he is actually viewing inside the whole form, also it can be moved to pan the form

[tut5] form communication,multi tab program, custom cursor for each tool

20 Jun 2016 by The Zakies

Learn how to implement a tecnique of a parent form that createes and controls other forms , through the tecnique of using the tab control, also learn how to implement a menu for the tools, and how to add cutom cursor for each tool

A Small Vector and Hash Table Implementation w/ No STL Dependencies

16 Mar 2022 by honey the codewitch

Get your data on, even on platforms without a reliable STL implementation using these simple but critical classes.

A VB.NET Implementation of the Douglas-Peucker Algorithm without Recursion

21 May 2016 by veen_rp

An add-on tip to articles already posted on Code Project

computational-geometry

A Wrapper for std::vector

23 Jun 2020 by Greg Utas

Replacing its erase() function

Adding max elements from each row in 2D vector such that row element a_I is less that a_(i+1)

8 Jan 2018 by CodeBlooded

So, I what I want is to collect maximum element from each row(in a 2D vector) and push it into a new vector. And if the new vector is sorted I want the sum of all vector elements. I tried it but the code is showing error : "cannot convert 'std::vector to 'int' assignment" also, is my code...

Adding max elements from each row in 2D vector such that row element a_I is less that a_(i+1)

8 Jan 2018 by CPallini

Quote: for (int i=0; i

Adding max elements from each row in 2D vector such that row element a_I is less that a_(i+1)

8 Jan 2018 by Patrice T

You try to solve this problem Contest Page | CodeChef[^]. As usual CodeChef challenges are not for beginners, and unfortunately you have read the requirements too fast and misunderstood it. All details count. Someone else have asked for help, read answers given, they should help you to...

Adding variables and functions to class through program

11 Sep 2016 by Emporea

So i am trying to code a program to sort and list some data. I use a vector with my class so every entry got its own object. But i realized i may want to add more tags/categorys to every entry and to store this new data i need a new variables or new functions in my class. How can i add...

Adding variables and functions to class through program

11 Sep 2016 by KarstenK

I think you should do some design wor with UML to clarify what you want to code. Here is a tutorial. An easy solution is also to draw it at paper - best with a pencil.Dont knowing the type of the variables is bad style. You can do such stuff by adding a dictionary which has a key (your...

An Optimal Wagner-Fischer Algorithm For Approximate Strings Matching In Python And NumPy

16 Sep 2022 by Arthur V. Ratz

Compute the Levenshtein distance of literal strings effectively by using the Wagner-Fischer (two matrix rows-based) algorithm.

Bitmap(jpg bmp etc...) to SVG

21 Mar 2015 by Member 11544807

Hi guysmy problem is to convert bitmap to SVG in c#. I found something like this http://docs.opencv.org/2.4.2/doc/tutorials/imgproc/shapedescriptors/find_contours/find_contours.html but this didn´t solve my problem. I need to convert for example a facewith white background from bitmap to...

Bitmap(jpg bmp etc...) to SVG

21 Mar 2015 by OriginalGriff

We aren't going to be able to give you an "out of the box" solution: this is not a trivial process in any way, shape or form.The problem is that Bimap, JPG, PNG, etc. files are raster graphics: they store a fixed array of pixels in various shades of red, green and blue (or hue, lightness and...

Bitmap(jpg bmp etc...) to SVG

21 Mar 2015 by phil.o

SVG being an xml-based format, if you do not want to use xml, you are going to have quite a hard time :)The following post on SO could perhaps shed a light on your requirement:SO: Convert Image (JPG,BMP,GIF) to SVG[^]

Bitmap(jpg bmp etc...) to SVG

22 Mar 2015 by Member 11544807

ok so now.. i need to trace that bitmap... and then vectorize it... and save as SVG... but i cant use freeware like inkscape... i need to make my own app.

C Programming vector of vectors usage

5 Dec 2014 by FoxRoot

Hello everyone,I' am working on vectors. I searched lots of resources. However, there is no data about vectors in C. Basicly, I should create an object(ie. Person) which should be a vector. Each property of actual object should be a vector. Is there any idea or source to read?Thank you.

C++ dynamic data – how to obtain it and how to get rid of it

6 Feb 2018 by rafaelfinalcut10

The code below – it's a skeleton of a program operating on the dynamic collection of data. The idea is to use a structure containing two fields: the first stores the number of elements in collections, and the second is the actual collection (a dynamically allocated vector of ints). As you can...

C++ dynamic data – how to obtain it and how to get rid of it

4 Feb 2018 by OriginalGriff

As I told you when you posted this earlier today, we do not do your work for you. Deleting the question and reposting it in the hope we won't notice is not a good idea - it won't get your work done for you, but it will annoy people. Read the instructions carefully, and think about what you...

C++ dynamic data – how to obtain it and how to get rid of it

4 Feb 2018 by CPallini

Quote: int *temp; temp = new[]; Let's fix your starting point. The above statemens should be int * temp; temp = new int[col.elno + 1]; Now your temp vector as the right number of items. You have to Copy all the col.elements items into temp. Add element at the end of temp. ...

C++ iterator for vector traversal, possible issue

23 Apr 2016 by Member 12371341

Hi all!So I have another problem.I have to traverse the vector and print out the values using an iterator.I know you say.... how hard can that be?I thought the same so i did like this// suppose we have a vector that takes a pointer to an object of abstract class//...

C++ iterator for vector traversal, possible issue

23 Apr 2016 by Patrice T

for(int a = 0; a print();}Are you sure this loop don't miss the last place in the vector ?[UpDate]Quote:It goes from zero to size - 1your code stops before size-1, so it stops at size-2, check again.

C++ iterator for vector traversal, possible issue

23 Apr 2016 by Philippe Mori

You probably want to docout print()

Calculating daily returns

10 Apr 2021 by Bhavini Amin

I am currently writing a programme to calculate the one day VaR using the historical simulation method. Within the programme I am first calculating the daily returns of the prices which the excel formula is Close_price_today -...

Can QR Decomposition Be Actually Faster? Schwarz-Rutishauser Algorithm

3 Jan 2022 by Arthur V. Ratz

Optimizing the performance of the large-sized matrices QR factorization and eigendecomposition, using Schwarz-Rutishauser algorithm

Change of Basis for Rotations and Vectors

3 Sep 2014 by milkboy31415

This code transforms rotations and vectors between reference frames such as Unreal, 3d Studio Max, etc.

Code feedback on vector of vectors implementation in C++ for finding points inside of an area

22 Feb 2022 by lock&_lock

(I posted this on CodeReview as well, I hope it's ok. I would love to get different perspectives & suggestion across different platforms). I am following a question on a programming challenge website (here's the original reference). What I have...

Code not working for generic type vector<T> in C++

10 Sep 2017 by raushanaj5

I am trying to send images to server. Earlier I had a simple function void fileSend(const char* fpath) This function is able to send one image file to the server. But, I am supposed to send many images to the server at once, that is why I went for vector. I overloaded the previous method...

Code not working for generic type vector<T> in C++

10 Sep 2017 by KarstenK

the path sound weired: string path = "C:\\Images:\\"; with the second ":" Resolve this and debug the code.Maybe the overloaded call isnt resolved as you wish. Try to rename one function.

Code not working for generic type vector<T> in C++

10 Sep 2017 by Jochen Arndt

There is no clear concept in your code and you are mixing C and C++ library functions for similar tasks (e.g. using C++ and C streams for file operations). I don't see actually where and why your code fails, but here are some tips: Your code does not check for errors. You should check the...

Convert coordinates (x,y) to VML RaphaelJS

20 Oct 2015 by Member 4581741

I have used Raphael to create a map. The map uses VML as a base for creating graphics. (http://raphaeljs.com/world/world.js) Ex: AE:...

Convert coordinates (x,y) to VML RaphaelJS

29 Oct 2015 by Member 4581741

Nevermind, i was able to convert the latitude and longitudes to pixels(points) and convert that into SVG format.Thanks

Create vector of custom class in java

11 Mar 2018 by Member 13720753

I do not understand this question: "In main method creates a (1) vector (not vector object) of the class type Animals.This should be of size 50" What I have tried: i have tried to create it in this way: Vector myAnimals = new Vector(50); did i do it right? Thank you

Creating opencv mat to 2d grid using vector<vector<node> >

7 Apr 2017 by Member 12157883

I am building a search algorithm using OpenCV Mat where I convert the Mat to gray image and then check the pixel to sign it to walkable or not walkable with their coordinate. I used a 2D vector to create a grid of node. The Node is a class to contain information about the pixel. when I try to...

artificial-intelligence

Creating opencv mat to 2d grid using vector<vector<node> >

7 Apr 2017 by Jochen Arndt

There are two errors in your code: You are never calling CreateGrid() (Grid::grid is empty) The Grid::grid vectors are never allocated To fix the first error call CreateGrid() in the constructor: Grid(cv::Mat _map){ map = _map; gridx = map.cols; gridy = map.cols; ...

artificial-intelligence

Deleting an element in a vector by value

17 Nov 2015 by ikon95

I'm new to C++ and my question is how can I retrieve an object from the Flight to be compared to the input (flightNumber) in the main? How do I declare the attributes type in the main? The error message displays "invalid conversion of 'int' to 'Flight' in the second last line.class...

Deleting an element in a vector by value

18 Nov 2015 by CPallini

Try:void Agent::delete(int flightNumber){ vector::iterator ptr; for(ptr=flightList.begin();ptr!=flightList.end();ptr++) { if( ptr->FlightNumber == flightNumber) { flightList.erase(ptr); return; } } if ((ptr)...

Error while reading the value of an array element by pointer

22 Sep 2014 by Igor-84

I use the following code for writing the vector to map container:int my_array[2];my_array[0] = 356;my_array[1] = 41; my_vector.push_back(my_array); std::map*> my_map;my_map.insert(std::pair*> (1, &my_vector));And when I try to...

Error while reading the value of an array element by pointer

22 Sep 2014 by jsolutions_uk

my_array is an array of 2 integer values, 356 and 41, all good so far ;) ...I am assuming that my_vector is declared as a std::vector ? So is a vector of pointers to integers, or in your case, I am assuming you intend it to be a vector of pointers to arrays (or rather a vector of...

Exercise I Can't Solve!

31 Oct 2015 by Stefano Lodico

I'm sorry for my bad English, but it isn't my language.I've done an exercise in C++11 for University:This is a program for understanding Templates:#include #include #include class matrix{ public: matrix(int riga, int colonna){ ...

Find if string exist in a vector of structs

3 Jul 2015 by Member 11401516

Good afternoon,I'm here with a doubt that i am not able to overcome and i've tried a number of ways. I'm doing a program that among other things the user has to enter data about a product where the serial number has to be unique and of type char. What is happening is that when i type the 1st...

Find if string exist in a vector of structs

5 Jul 2015 by Daniel Pfeffer

I will answer the specific question that you asked (leaving all other errors for you to find).When calling procurarNumeroserie() for the first time, contadorProdutos == 0. This means that the loop is not executed, leaving posicao as zero. The caller sees this as an indication that the...

How can I read vector elements into a linked list

21 Sep 2017 by Mwater07

I would like to write a program that stores nonzero elements of 2 different vectors into 2 different linked lists with their indexes. Then would like t to calculate the dot product and displays the result. I am struggling to read in vector values with indexes into a link list. Please advice ...

How can I read vector elements into a linked list

21 Sep 2017 by Patrice T

The code is not complete, you should use the debugger to see what your code us doing There is a tool that allow you to see what your code is doing, its name is debugger. It is also a great learning tool because it show you reality and you can see which expectation match reality. When you don't...

How do I compare the content of two Vectors

31 Jul 2014 by WENzER

I am trying to write a program in C++ which should input a string array, and string should contain Employee Name Salary and Its Manager Name with comma seperated delimeterThe input will be provided following format:Mr XX, 5200000, NONEMr YY,52000, Mr. XXMr ZZ, 34500, Mr. YYThere is...

How do I compare the content of two Vectors

30 Jul 2014 by nv3

The best approach would be to store your entire input data in a tree structure. If you are familiar with tree-structures, this will probably the most obvious solution.As you have not chosen that path, I assume that you are not familiar with building a tree in C++. So here is an easier way to...

How do I compare the content of two Vectors

30 Jul 2014 by chandanadhikari

hi,for simply comparing 2 vectors you can check this out [^]hope it helps !

How do I create a vector of functions with different argumen/return types?

5 Aug 2019 by Member 14549814

I want a vector of functions that would look something like this: vector>v; but obviously this didn't work... something like this: #include using namespace std; int f1(int n){ return n*2+2; } string f2(string n){ return n+'!'; } int main(){...

How do I create a vector of functions with different argumen/return types?

4 Aug 2019 by Rick York

Here's one way it can be done. typedef UINT( WINAPI * ThreadFunc )( PVOID ); typedef struct { ThreadFunc function; PVOID argument; } OneFunction; int main() { std::vector functions; OneFunction f; // set the members of f here ...

How do I create a vector of functions with different argumen/return types?

5 Aug 2019 by Stefan_Lang

Don't do this. It's probably doable with variadic templates, but judging by your code you already have enough trouble without templates. Moreover, putting functions (or rather references to functions) into a container eliminates readability, makes your code hard to read and prone to errors. ...

How do I delete an element from a vector?

12 Sep 2023 by Brennon Nevels

While I'm aware that this is just a simple thing to do, I've tried to make this into a function. While mine kind of works, I'm more interested in how other people would go about it. #include #include #include ...

How do I delete an element from a vector?

11 Sep 2023 by Rick York

That is done use the erase method of the vector class : https://cplusplus.com/reference/vector/vector/erase/[^]. It can be a very expensive operation to perform if deleting from anywhere except the tail end of the vector. If deletions are going...

How do I delete an element from a vector?

11 Sep 2023 by CPallini

With C++ 20, the single line std::erase(shoppingList, choice); would do the trick. See std::erase, std::erase_if (std::vector) - cppreference.com[^].

How do I delete an element from a vector?

12 Sep 2023 by Greg Utas

If the order of elements in the vector isn't important, an efficient way to do this is to move the last element into the slot of the element being erased. This is how I manage the list of open sockets for the poll function, and I wrote a simple...

How do I expand my array? !

17 Mar 2021 by Member 15104493

Hey! I have created an array that has 50 places. When the places are full, I want it to constantly expand with 1 place in the array, but it does not work... I need to use array and can not use List.. And I can not use array.resize... Please...

How do I expand my array? !

17 Mar 2021 by Richard MacCutchan

Use Array.Copy Method (System) | Microsoft Docs[^].

How do I expand my array? !

17 Mar 2021 by OriginalGriff

The best solution is to not use an array - use a List instead. Internally, it uses an array for storage, but externally it appears as expandable. This may help as to why your solution is a very bad idea from a performance point of view:...

How do I have to apply freeTransform around Its center to a vector shape

18 Oct 2015 by elGp

Hello there, I have a small project about creating vector shapes and manipulating with them. I stuck at creating a rotation tool. Can someone throw a quick eye at it and give me a hint how to deal with that ?

How do I merge two vectors while keeping the duplicates

11 Dec 2021 by John Brg

I have two vectors A,B and I want to merge them to a vector C but I want to preserve any duplicates in each vector while discarding duplicates between the two. For example if I have A{1,2,3,4,2,5} and B{7,8,2,2,2,3,3} I want C to be...

How do I merge two vectors while keeping the duplicates

11 Dec 2021 by John Brg

Well it seems std::set_union does this. Nothing else is needed.

How do I replicate C++'s .push_back() function in C?

24 Jan 2023 by Chillzy

I'm trying to convert C++ code to C and it was all fine until I got to the .push_back() function. After some research, I found out this wasn't a function in C. How do I write a function in C that replicates the uses of the .push_back() function? ...

How do I replicate C++'s .push_back() function in C?

24 Jan 2023 by Richard MacCutchan

You cannot do it easily, as this is a method of the STL vector class. So you would need to write a complete set of functions to manage whatever data you are trying to collect. Which all begs the question, why on earth are you trying to convert...

How do I replicate C++'s .push_back() function in C?

24 Jan 2023 by CPallini

Quote: ll the code is in C++ and not C, which is a problem because I work in C, due to it being better than C++ (rather structs and unions than classes and templates and whatever bs C++ has to offer). Use C++ if you can. C++ is multi-paradigm...

How do I replicate C++'s .push_back() function in C?

24 Jan 2023 by k5054

If you are using linux you can approximate a C++ vector using a dynamic memory buffer stream (aka a memstream). Here's an example of how you might go about that: #include #include int main() { int *ints = NULL; /* a...

How do I return an empty vector

7 Dec 2022 by Freddie Francis

This method finds all Alien objects in the AlienList object’s Vector whose humanoid field has the value false. It stores all matching Alien objects in a new Vector that is then returned from the method. The method must also remove all the...

How do I return an empty vector

7 Dec 2022 by OriginalGriff

This is the same question you posted 3 days ago: I need this method to return an empty vector if there are no matching alien objects[^] Please do not repost questions, it doesn't improve the chances of you getting an answer, it just wastes the...

How do I solve this std::sort and struct issue?

20 Nov 2020 by whataweird

hi, this code won't compile correctly using std::sort and a struct. How do I solve this? #include #include #include #include struct StudentDataTypes { std::string name{}; int grade{}; }; int...

How do I solve this std::sort and struct issue?

20 Nov 2020 by Richard MacCutchan

The sort function does not know how to sort a StudentDataTypes structure. You must provide a comparator, see functions | Microsoft Docs[^].

How do I solve this std::sort and struct issue?

20 Nov 2020 by k5054

You need to tell sort how to compare the two structs. since there's no default comparison for non basic types. Do you want to sort by name or by grade, or by grade then by name, or ...? Probably the easiest way is to add an operator

How do I sort a vector of struced data with sortorder of another vector

21 Jun 2016 by Dennis1990

Hi,unfortunately im sitting at this problem for 4hours now, and it drives me crazy:i got an 2 vectors as a members of my class.the firstvector contains structs and the vector with the sorting informations is filled by Enums...

How do I sort a vector of struced data with sortorder of another vector

20 Jun 2016 by KarstenK

To achieve your own sort order you must overwrite the sorting algorithm, by overwriting the comparison operator "

How do I sort a vector of struced data with sortorder of another vector

24 Jun 2016 by Dennis1990

thank you for your help.i used the STL Sort Comparision Funciton and could use the Member

How do i...calculate the dot product of an array of structure

19 Sep 2017 by Mwater07

I am trying write C++ programs that compute the dot product of two given vectors. In vectors a and b only nonzero elements will be stored into array of structures(row and col). Each time I am getting irrelevant results. The correct result should be 50. Please advice. Thank you in advance. ...

How do i...calculate the dot product of an array of structure

19 Sep 2017 by Jochen Arndt

There are three errors in your code. The first two ones: You have a fixed array size of 10 for row and col but are accessing 11 elements (out of bound access) and did not initialise all elements: for (int i=0; i

How do i...calculate the dot product of an array of structure

19 Sep 2017 by CPallini

You are trying to complicate a simple matter. Try #include #include using namespace std; // Please note: error handling (e.g. a.size()!=b.size()) left as exercise int dot(const vector & a, const vector &b) { int dp = 0; for (size_t n = 0; n

How do you implement a template function that accepts vectors and arrays

18 Oct 2014 by joedoeuse

I am attempting to assign random numbers to some array or vectorWhen I use this method on an array it works fine, however when I use this with an vector, it will not work. // declare small vector vector smallVector(smallSize); // call helper function to put random data in...

How do you implement a template function that accepts vectors and arrays

18 Oct 2014 by Andreas Gieriet

Try leaving away the address-of operator while instantiating the function and pass the data in the template by reference.CheersAndi

How do you implement a template function that accepts vectors and arrays

18 Oct 2014 by CubbiMew

Since data is an out-parameter (you're trying to populate it within genRand and make the result available in the caller, right?), you need to take it by reference:templatevoid genRand(T& data, int size){ ...genRand(smallVector, smallSize);genRand(smallArray,...

How to access class data members in a thread without passing them as arguments?

16 Apr 2015 by Amir Hossein Farzaneh

I am initializing a vector in a class using 4 threads by passing arguments to threads: //main.cpp #include "stdafx.h" #include #include #include "class.h" using namespace std; int main() { myCLASS* classObject = new...

multi-threading

How to access class data members in a thread without passing them as arguments?

16 Apr 2015 by KarstenK

You can declare some data structure (struct) which holds all of your data. That can be set at thread start or as global data.It is a common practice to use pointers to that data.struct DATA{ std::vector *cluster; int* iteration;};//possible array for 4 threadsDATA...

multi-threading

How to access to a Vector<Point(x,y)> vec() elements?

15 Jun 2014 by hor_313

HiI've declare a vector like this: Vector vec(3);for(Vector::iterator i=vec.begin(); i

How to access to a Vector<Point(x,y)> vec() elements?

16 Jun 2014 by Joren Heit

Assuming x and y are accessible as members of your Point type, for (Vector::iterator i = vec.begin(); i != vec.end(); ++i) // srsly, what's with the post-incr in ALL code??{ int x = i->x; // or whatever type it is // do stuff}If your compiler supports the C++11...

How to allocate dynamically a vector of a class?

15 Dec 2015 by Are Riff

I am learning about dynamic memory and have a question.Let say I have this class.class Elf {private: double _health = 0;public: Elf(const double &health){_health = health;}};I can create an Elf object using smart pointer like this.unique_ptr vec1 =...

How to allocate dynamically a vector of a class?

15 Dec 2015 by Leo Chapiro

You are just doing this :)Vector already internally dynamically allocates when you push_back into it.If you think about something like vector * pVec = new vector (size);so you don't need it: vector is already a wrapper around the process of dynamic allocating, so...

How to allocate dynamically a vector of a class?

15 Dec 2015 by User 59241

From your example I am guessing you are asking how to construct the vector of unique_ptr's to Elf and populate. Like so: vector> vec_uniqptrElf; for (auto i = 0; i (new Elf(90))); }

How to create a .dll for clients using either different compilers or different version of the same compiler

4 Aug 2015 by Makhno

Hi all,I'm a new member of code project and I'm not an expert software designer, therefore, please, use a simple language for your answers. Now I'm facing this problem: I have to create a dll which should be used by several clients, using either different compilers or different version of...

How to create a .dll for clients using either different compilers or different version of the same compiler

4 Aug 2015 by Pascal-78

I would advise you to avoid standard library in any exported method because even with the same compiler, the debug and release version of a std::vector can be different.I have write a complex interface for a project inside my company, it must be compatible with Borland C++ 2009 and VS2010.To...

How to delete specific vector from given class in C++

9 May 2018 by Member 13816159

Hello, I am writing a program that allows users to input a music album and store them into vectors. Then the program asks the user whether to borrow it. To do that I tried using .erase of the given vector. However the vector function is defined in a constructor of a class and the modification is...

How to delete specific vector from given class in C++

9 May 2018 by Richard MacCutchan

You have not explaine the problem. Although I suspect that your class declaration entry for Borrow1 is wrong. You have the following in your class: public: Album(); void Borrow1() {}; // Borrow1 is an empty function. }; And you later define Album::Borrow1() with a proper body. In my test this...

How to find object vector C++

11 Dec 2017 by Leo Chapiro

Just try to find object vector C++, that's all!

How to fix template error?

13 Aug 2023 by Brennon Nevels

My friend and I are building a text-based game. But the problem so far is I cannot figure out how to resolve this problem. The goal was to make two functions. One to print a vector and another to find a specific element within. #include...

How to fix template error?

13 Aug 2023 by Rick York

The function should look more like this : template void printVector( const std::vector & vec ) { for (int i = 0; i

How to fix template error?

13 Aug 2023 by merano99

It seems to me that templates might not be the right way for the desired functions. I would first overload only the output operator. There are several ways to do this. Instead of the function as before, a class VectorPrinter can be created that...

How to get coordinates of triangles in hexagon?

14 Mar 2015 by vezo11

Hi, I want to split hexagon into triangles and get the coordinates for the each of treangle point. How i want to split hexagon, you can see in this picture.I have class triangle and class point class Triangle { public Point A { get; set; } public Point B { get;...

How to get coordinates of triangles in hexagon?

14 Mar 2015 by Dave Kreskowiak

Google for "C# Triangle Mesh algorithms" and you'll come up with all kinds of examples to do it.

How to get coordinates of triangles in hexagon?

14 Mar 2015 by _Maxxx_

If point(0) is at (x,y)then it forms a triangle with points(x,y) , (x, y+n) , (x + SQRT(n2 - (n/2)2) , y + (n/2))where n is the length of side of the triangle - which is N / 3 where N is the hexagon side length.now you have the coordinates of triangle (0,1,5) every other triangle...

How to get Matrix of feature vector from quantized spectogram?

21 Apr 2015 by nizam qbixx

Hi..I was doing a research related to speech recognition. So far I already able to convert a sample waveform (.wav format) to a feature vector by using MFCC which generate .mfc file. I also able to read the .mfc file but I dont know how to related it to the spectogram. Actually, I'm not sure...

How to increase imageview's width and height but do not change the width and height of the content inside it?

27 Jun 2021 by Proton Vpn

Hello there.. I have an vector drawable that I have been using it for an ImageView inside my Project. Now I want to change the ImageView's height and width to custom dp but when i do it the content inside it also changes it's width and height....

How to initialize a vector of array

19 Oct 2015 by Mạnh Lê

Hi guy !I want to create a vector of arrayvector cKey;BYTE keyTemp[6];memset(keyTemp, 0xFF, sizeof(keyTemp)); // Key is FFF...FFcKey.push_back(keyTemp);but, push_back function is show errorError C3074: an array can only be initialized with an initializer-listHow to...