a value of type "int" cannot be assigned to an entity of type "Node<int> *"C/C++(513)

I have a linked list that contains a pointer to the first and last node and size which indicates how many nodes are there in the list. I have a function that returns the first node. I want to be able to change the m_data in the first node using queue1.front() = 3;. However, I… Read More a value of type "int" cannot be assigned to an entity of type "Node<int> *"C/C++(513)

Why weren't the newest version of dependencies fetched?

I have added dependencies in a Rust project like this: rust_wheel = { git = "https://github.com/jiangxiaoqiang/rust_wheel.git&quot; } When I built this project in GitHub Actions, I found it got the legacy version of rust_wheel: Compiling rust_wheel v0.1.0 (https://github.com/jiangxiaoqiang/rust_wheel.git#5dffd2f5) error[E0412]: cannot find type `Json` in module `content` –> /usr/local/cargo/git/checkouts/rust_wheel-8476ff1b418e67f8/5dffd2f/src/common/util/model_convert.rs:35:50 | 35 | pub fn box_rest_response<T>(data: T)… Read More Why weren't the newest version of dependencies fetched?

QProcess: The system cannot find the file specificed even when full path is provided

Here is my full code: #include <QCoreApplication> #include "iostream" int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); QProcess process; QString path = "C:\\Windows\\System32\\wbem\\WMIC.exe"; QString arg = "cpu get name"; QStringList arguments; arguments << arg; //process.start(path,arguments); process.start(path + " " + arg); //qDebug() << "Started"; std::cout << "Started" << std::endl; if (!process.waitForFinished()){ qDebug() << "ERROR"… Read More QProcess: The system cannot find the file specificed even when full path is provided

Valgrind message: Conditional jump or move depends on uninitialised value(s) unresolved

i’m trying a new assignment i’ve got: i need to copy the Environment variables from the shell into an array, then lowercase them and print them back. (i’m using Ubuntu 20.04.4 LTS, gcc for compiling, and writing my code in C language). i was adviced to use malloc to create the array but decided not… Read More Valgrind message: Conditional jump or move depends on uninitialised value(s) unresolved

How to write a function which returns complex in C++?

I am trying to do numerical calculations with C++. Here is the sample code #include <complex> using namespace std; complex<double> complexDo(float a, float b){ return (a+b,a-b); } int main(){ cout << "complexDo="<<complexDo(3,2) <<‘\n’; return 0; } The terminal will show after compiling complexDo=(1,0) But I expect to appear like (5, 1), and what is the… Read More How to write a function which returns complex in C++?

I'm writing my first ever java program and it's not compiling for a certain reason

This is the code i have tried running public class main { public static void main(String[] args) { System.out.println("Hello, world!"); } } and it gives me this error: tempCodeRunnerFile.java:1: error: class main is public, should be declared in a file named main.java public class main i don’t know what wrong tbh i have tried modifying… Read More I'm writing my first ever java program and it's not compiling for a certain reason

Installing a new kernel built from source takes too much time

I have built Linux kernel from source with make and make modules_install. But I issue the install command: $ sudo make -j8 V=1 install arch/x86/Makefile:142: CONFIG_X86_X32 enabled but no binutils support test -e include/generated/autoconf.h -a -e include/config/auto.conf || ( \ echo >&2; \ echo >&2 " ERROR: Kernel configuration is invalid."; \ echo >&2 "… Read More Installing a new kernel built from source takes too much time