Software Development Forum

## Introduction ## Whenever we want to modify numbers from multiple threads running concurrently, such as modifying a counter, one of the best options is to use the AtomicX classes. The most basic numeric atomic classes are AtomicInteger and AtomicLong. In this tutorial, we will learn how to use the …

Hello, I need to convert C codes to Java codes.this promram calculates surface areas of a 3D geometry which is read from datas from text file.thanks for help. text file: [CODE=text]12 0 0 0 0 0 1 4 0 1 4 0 3 5 0 3 5 0 0 0 …

hi , I found this code on the internet , I changed and added some lines to it to make it the way I like . I am very weak in using functions and even worse in using classes , I appreciate it if some one can change this code …

Hi, i have this script but cant seem to open the browserframe in the correct place  import ctypes import platform from cefpython3 import cefpython as cef from tkinter import * import tkinter as tk import sys # platforms WINDOWS = platform.system() == 'Windows' LINUX = platform.system() == 'Linux' MAC …

I have MinGW installed on Windows 10. Can you help me compile something with it? I get this $ g++ first.cpp -o first bash: g++: command not found And then $ apt-get install g++ bash: apt-get: command not found

need help with this school project

## Introduction ## If you are a Java developer coming to Kotlin, you might have wondered how to use a language construct that is similar to the try-with-resource statement in Java to automatically close Autocloseable/Closeable resources for you. Luckily, Kotlin provides the inline extension function `use()` that provides similar functionality …

## Introduction ## In Java, a common way to express a type that is a combination of two or more types is to just create an interface that extends the other types. The problem with this approach is that your code might be littered with interface declarations, polluting your code …

Debug time Application run good all private sub and Function work properly, but with out debug not run properly please help me

so i have an assignment for a class to make a pick up sticks game. This is the actual assignment: "The rules of pick up sticks are as follows: The user chooses the number of matchsticks (5 to 50) to place in a pile. Then, the computer chooses who will …

Hello everyone, I am currently working on a project for a friend and have encountered some issues. I am attempting to fill out a form with a library called iTextsharp: [url]http://itextpdf.com/[/url] The form that I am attempting to fill out is [url]http://www.copyright.gov/forms/formco2d.pdf[/url] and I have been able to fill out …

Hi all, I've started to dive into OpenGL w/C++ to expand my library knowledge but I had a few questions. I've been following a tutorial online that basically walks step by step through the compiler linking, functions, and basics of an OpenGL program. I really would love to create some …

What I would like to do is to register a couple of shortcuts to move the mouse cursor. The cursor should jump from the one square area of the screen to the other. The question that comes to mind first is: which keys are not used (or at least not …

1. Write a program that would print the information (name, year of joining, salary, address) of employees by creating a class named 'Employee'. 2. Create a function in the Employee class that finds an employee by the given year of joining. 3. Create a function for sorting the employees according …

I'm trying to figure out why the regex code below gives me two different results, depending on where I use it. [A-Z]{0,1}[a-z]{2,}[:] **On phpliveregex.com, the above regex code matches the following:** narrator: Narrator: **When used in preg_match, the above regex code matches the following:** narrator: Narrator: NARRATOR: PS I'm not …

The alarm clock application works by setting a certain time and then it perform a certain task eg:sound an alarm, display a messagebox test message. But the problem comes where i need to snooze(delay) the alarm clock for a certain time period like 10 second... Then it will re-initialise the …

## Introduction ## RxJava 3 includes 5 core classes: 1. Flowable, 2. Observable, 3. Single, 4. Completable, 5. Maybe. This tutorial aims to teach the basic concepts behind Observable, which serves as a foundation for understanding the other 4 classes. ## Goals ## At the end of the tutorial, you …

## Introduction ## In this tutorial, we will look at the RxJava `mergeWith()` and `concatWith()` operators. Amongst others, they are used to combine Observables together. All of the RxJava operators have ambiguous names, and behave differently, so let us take a look at 2 operators, `mergeWith()` and `concatWith()`, to see …

## Introduction ## `launch()` and `async()` are two of the most common coroutine builders to use in Kotlin, but they are somewhat different in usage. `launch()` returns a `Job` object, which can be used to cancel or perform other operations on the underlying coroutine. If our coroutine lambda returned a …

## Introduction ## In Kotlin, we can extend classes without subclassing via extension functions and extension properties. This feature is useful whenever we want to extend 3rd party libraries or final classes. In this tutorial, we will learn what extension functions and extension properties are, and how to create our …

i have code for write on console and change the text color and backcolor and clear screen(and much more) inside of a nice class console. these function change the text color and back color: void SetColorAndBackground(int ForgC, int BackC=0) { SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), ForgC|(BackC<<4) ); } but is there any way for …

The arithmetic mean of two numbers is the result of dividing their sum by 2. The geometric mean of two numbers is the square root of their product. The harmonic mean of two numbers is the arithmetic mean of their reciprocals. Write a C++ program that asks the user for …

hi all...i am a not that much in programming ... i would ask you how i can generate a multiple choice question chosen randomly from a list of questions with answers using functions in C program ...i know how to generate random numbers only ... help me please ,,, as …

## Introduction ## The `java.nio.file.Files` class includes many convenient methods to read file attributes, but sometimes these convenient methods just are not enough to meet our needs. In this tutorial, we will go over 5 ways to use the `Files` class to read file attributes so you can choose the …

## Introduction ## With coroutines in Kotlin, we are able to execute suspending functions without blocking the current thread. By default, most coroutine builder functions use the `Dispatchers.Default` context, but it is also possible to use other implementations of `CoroutineContext`. In this tutorial, we will learn about the 2 `CoroutineDispatchers`: …

Hi pals, I am a Newbie in C++ Programming field. I plan to add graphics.h header class in Dev -C++ Version 4.9.9.2 from Bloodshed which is come along with Borland Compiler. I follow the Steps in URL : [url]http://www.uniqueness-template.com/devcpp/#step2[/url] But I Got Error in the Sample code which test the …

Just started learning PEP/8 what would the correct way to convert numbers into roman numericals? for exemple How can input let say 6 and have it come out as VI in the output? I know what i did is far from being the correct way to do things as i …

## Introduction ## Although not included in the headlines, the release of JDK 17 also added 3 sets of new methods to the class `java.lang.Process`: 1. `inputReader()` to read from stdout. 2. `inputWriter()` to write to stdin. 3. `errorReader()` to read from stderr. In this tutorial, we are going to …

## Introduction ## When working with an application with a global user base, there is usually a need to display text, numbers, currency, date, and time in multiple localized formats. For example, the **en-US** (*English-USA*) version of the date September 22, 2021 is written as 22 сентября 2021 г. when …

Hello everyone, I've been using this website and it has helped me with it's hundred of solved cases, but I couldn't find one appropriate for this one. I have created a Menu() function that looks like this: [CODE=C]int Menu() { int i; printf("MENU\n\n"); printf("1 - ...\n"); printf("2 - ...\n"); printf("3 …