Beginners - June 2022 (Page 3)

 by JamieAl Eliminating use of for loop with Eigen I am trying to build a row vector and column vector using Eigen library to multiply them together to get a matrix without a use of for loop. Original code: ... Jun 16, 2022 at 2:43am UTC [1 reply] : See: https://eigen.tuxfamily.org/dox-devel/group__TutorialSTL.html (by JLBorges)
 by JamieAl Extract rows/columns of matrices in C++ vs MATLAV In MATLAB you can extract the first and last rows of a matrix by A(1,:); A(N,:); Is there a similar way in C++ where we can do this? For example, ... Jun 16, 2022 at 1:09am UTC [18 replies] Last: Thanks everyone for the incredible feedback/info! I am working with Ei... (by JamieAl)
 iterator problem I am copying an example from a book and it wont compile. I am trying to copy a vector to a set using transform, as it will make all the strings... Jun 15, 2022 at 8:46pm UTC [4 replies] Last: Just been looking at it and I noticed the return type. Thanx for look... (by mickydint)
 by sarvcr Linked List with templates Question Solved. Look at SeePlus comment if you have a problem like this. Hi! Long story short, I've been struggling way more than I'd like to admit to unde... Jun 15, 2022 at 7:18pm UTC [9 replies] Last: It's working perfectly now. I really appreciate all the help you've gi... (by sarvcr)
 by Al Green char*/string function type Hi folks! I'm trying to write DLL with a function that accepts a string, manipulates it and returns shorter version of it. Previously I was able to create si... Jun 15, 2022 at 6:49pm UTC [4 replies] Last: @thmm Thank you, I used your code and it works now! You are awesome! ... (by Al Green)
 What's the difference between overloading operator<(Class& a) and operator<(Class& a, Class& b)? What is the difference between overloading operator<(Class& a) and operator<(Class& a, Class& b) ? Which needs to be defined for a user class for the std... Jun 15, 2022 at 6:54am UTC [8 replies] Last: How many calls are used when it's sorted Apparently still just 1. M... (by Peter87)
 A calculator question Hello I'm trying to implement a simple calculator supporting variables. And my question is the LValue can be int or var, and if it's unused the initial value s... Jun 14, 2022 at 2:07pm UTC [10 replies] Last: istringstream gives a stream from a string. This can be used as a stre... (by seeplus)
 by MHS1986 Undefined reference? Hi, i am new to C++ and while practicing i am getting an undefined reference error from the compiler and i dont know why... Can anyone see what the problem is b... Jun 14, 2022 at 6:51am UTC [4 replies] Last: Part of the problem is that you have global: const int NUMBER_OF_ROWS... (by keskiverto)
 by Pen72 Graph problem I'd like to know what condition have I not considered in the code, this should be a DAG problem right? My code appears to be wrong in the first sample test case... Jun 14, 2022 at 4:42am UTC [6 replies] Last: Hello, yes I think it should be m, must be typo mistake. Thank you for... (by Pen72)
 by SITHESH Adding a blocker in a board to restrict cell access. I have game of Abalone that I have created I am looking for ideas to insert a blocker on the board. This blocker should be randomly inserted on the space that ... Jun 13, 2022 at 6:06pm UTC [5 replies] Last: Thank you, @jonnin, for the feedback on this and to @George P for the ... (by SITHESH)
 by Pen72 Find words I don't know where my code went wrong, I got two correct answers and 8 wrong answers, thanks in advance for any help. A word is defined as a string of w chara... Jun 13, 2022 at 1:15pm UTC [4 replies] Last: #include #include #include #include ... (by seeplus)
 by Pen72 inorder traversal Hi I'm trying to implement inorder traversal in BST. The issue I got here is, if the data is already in BST, the operation must be ignored. I used a vector to ... Jun 13, 2022 at 1:15pm UTC [3 replies] Last: Your question asks about Inorder traversal but your post alludes to tr... (by ElusiveTau)
 by rozick1 map with iterator as key? Hi I'd like to have a map where the key type is an iterator. This will not work out of the box because a map requires the availability of the less than operato... Jun 13, 2022 at 4:59am UTC [4 replies] Last: > Does anyone know a way of defining a less than operator to an iterat... (by JLBorges)
 by Geckoo Format integer as a string Hello. Is there a way to format an integer according its memory size using to_string ? I explain my will by an example : std::string message = "my message"... Jun 12, 2022 at 9:58pm UTC [7 replies] Last: Now the message is simply concatenated this way : snprintf(message, ... (by Geckoo)
 No idea whats wrong Hi, I have two weird questions, not sure if its something wrong with my code... 1) Why is my output 0 ? shouldnt it be 11 divided by 100 multipied by 50 = 5.... Jun 12, 2022 at 9:35pm UTC [7 replies] Last: However, for a computing system, if you divide an integer by an inte... (by Geckoo)
 by yonagy82 Failure of parameters transfer Hello, I'm trying to build an ESP32-TMC2209 application. The setup of the TMC2209 includes invocation of a hardware serial port to send serial commands from th... Jun 12, 2022 at 1:43pm UTC [6 replies] Last: Unfortunately it didn't help. (by yonagy82)
 by Geckoo Color spectrum Hello everyone. I hope that all is fine for you. I am still playing with pixels. Now I am searching for a way to display a cool color spectrum using a simple lo... Jun 12, 2022 at 8:59am UTC [3 replies] Last: Done. Thank you ++ https://ibb.co/VDt23qs (by Geckoo)
 by Ch1156 What is this code doing? So i'm following this book called SFML Game Development By Example and I've run into some code I'm not too sure what its doing. This entire function I have s... Jun 12, 2022 at 8:32am UTC [1 reply] : Hello. This code is a good exercise to understand "complex" logical co... (by Geckoo)
 decrement size_t in loop (1,2) Hi everyone, I was recommended to turn on compiler warnings for debugging purposes. The compiler frequently complained that I was comparing signed and unsigned... Jun 11, 2022 at 4:10pm UTC [25 replies] Last: > That approach works fine with VS release... >> Compile without it a... (by JLBorges)
 Process exited with value 3221225477 Hello friends, I am currently working on a homework. But the code i wrote is not works as expected what i mean is that when i run the code sometimes i get the ... Jun 10, 2022 at 4:48pm UTC [6 replies] Last: Thank you all. That helps a lot. (by hakanxdurak)
June 2022 Pages: 12345
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