I want to avoid using variable index outside of enhanced for loop as it is useless after the loop and pollutes the namespace but cannot find my way around it. Problem int index = 0; // I want to avoid using this variable outside the loop for (List<Integer> bucket : buckets) { for (int el… Read More How to avoid declaring variable outside of enhanced for loop

I wrote the following code : #include <iostream> using namespace std; class Shape { public : float lgth; public : void getLgth() { cin >> lgth;} }; class Square : public Shape { public : float calcArea() { return lgth * lgth; } }; class Circle : public Shape { public : float calcArea() {… Read More How to simplify this code where a variable is declared after an user input in c++?

I have the following C++ code: class ident {}; class Base { public: int ident; }; class Derived : public Base { ::ident var; // refers to the global identifier ident var; // syntax error, refers to the base member }; Is it possible to make it so ident refers to the global variable in… Read More Unshadow global identifier in a class

I have a function below that should be constantly running every second, making api calls and receiving data. Api_data is an instance of a class defined separately. I am building a list with 5 most recent data points. I want to be able to use my_DataPoints in other functions and modules, for example to build… Read More passing dynamic data from a while loop to other modules

I’m trying to figure out a JavaScript code scope problem and I have simplified this to const first = () => { console.log("first"); } const second = (first) => { first(); console.log("second"); } const third = (second) => { second(); console.log("third"); } Based on three functions above, I am supposed to write code using only… Read More How should I write the JavaScript code such that the output will be "first", "second" and "third"

I am looking to create a some functions that create a result in a variable within the scope of a function and then pass that variable from one function to another function. as a simplified example, say I wanted the test1 function to combine two strings and then have another function that can take an… Read More Function of Functions – pass variable between scopes – powershell

This error occurred FATAL ERROR: test case CRASHED: SIGABRT – Abort (abnormal termination) signal ::error::Error: Exit with code: 134 and signal: null when I was testing a string constructor "String::String(const char* other)" String::String(const char* other) // the constructor I’m talking about { if (other == nullptr) { String(); } else if (other != nullptr) {… Read More "FATAL ERROR: SIGABRT" when defining a string constructor in a custom String class

I have a std::string and pass that by reference to a function. The function dereferences the parameter (pointer) into a local std::string for ease of working. I update the local string’s value and then update the pointer. Have I just pointed to something that’s gone out of scope? Or have I updated the underlying value… Read More C++ pointer to std::string updated in function – scope issue? (ESP32)

I’m perplexed as to why I need to selectively refer to an instance variable with "self" inside a case statement inside a class method: I have a class with an instance method @working_dir: class FileSystem attr_accessor :sizes, :working_dir attr_reader :input def initialize(input) @input = input.split("\n") @sizes = Hash.new(0) @working_dir = [] end … end I’ve… Read More Ruby: Working with instance variables within a case statement

hello im new to programing with c# and i wanted to re-create an old proyect i made in scratch but with c# but i have several problems with the code i wrote. int qny = 4; int ADD = 1; int B = 1; string C = " "; for (int i = 0; i… Read More cannot be declared in scope (among other errors)