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Golang, also known as Go, is a popular open-source programming language known for its simplicity and concurrency. However, it lacked one important feature that other modern programming languages have, which is generics. Generics allow a programmer to write flexible, reusable code that works with different types without sacrificing type safety. In this article, we'll explore the introduction, syntax, and examples of generics in Golang. Introduction to Generics in Golang Generics are a way to write code that can work with any type, rather than being restricted to a specific type. In other words, generics allow you to write a function ... Read More
Random numbers play an important role in many applications, from computer games to cryptography. Go has a built-in package called "math/rand" that provides a suite of functions to generate random numbers. In this article, we will explore how to use the "math/rand" package to generate random numbers in Go. Generating a Random Integer To generate a random integer, we can use the "Intn()" function from the "math/rand" package. The "Intn()" function takes an integer n as its argument and returns a random integer between 0 and n-1. Example package main import ( "fmt" ... Read More
In Go, it is common to write functions that take interfaces as arguments or pointers to interfaces. This can be useful when you want to write generic code that works with any type that satisfies a particular interface. Functions That Take an Interface Type as Value In Go, interfaces are defined as a set of methods. If a type implements all the methods of an interface, then it is said to satisfy the interface. This means that the type can be used wherever the interface is expected. Here is an example of a function that takes an interface type as ... Read More
Go is a modern programming language that offers a wide range of features for developing efficient and reliable software. One such feature is the ability to return multiple values from a function. In this article, we will explore how to use functions that return multiple values in Go. Introduction to Multiple Value Returns In Go, a function can return multiple values of different types. This feature is useful when you want to return more than one value from a function, such as returning both the result of a computation and an error value that indicates whether the computation was successful. ... Read More
Functions are a first-class citizen in Go programming language, which means they can be treated as values and used as arguments or return values from other functions. This also extends to structs, where you can include a function as a field in a struct. In this article, we'll explore how to include a function as a field in a Golang structure and how to use it. Defining a Function as a Field in a Golang Structure To define a function as a field in a Golang structure, we first need to declare the type of the function using the type ... Read More
When it comes to writing programs in Golang, understanding how to pass values to functions is essential. In this article, we will explore the basics of function arguments in Golang and learn how to pass values to functions effectively. What are Function Arguments? In Golang, a function argument is a value that is passed to a function when it is called. These values are used by the function to perform a task or calculation, and they can be of any data type, such as integers, strings, or booleans. How to pass Function Arguments in Golang? In Golang, function arguments are ... Read More
The fmt package is one of the most commonly used packages in GoLang. It is used for formatting text and printing it to standard output or to a file. This package is part of the Go standard library, and it is included with every Go installation. In this article, we will explore the fmt package and learn how to use it effectively in our Go programs. What is the fmt Package? The fmt package is a built-in package in GoLang that provides functions for formatting text and printing it to the console or to a file. It includes a wide ... Read More
In Golang, the flag package provides a way to parse command-line arguments. It allows us to define flags that can be set when running a program from the command line. The flag.Bool() function is used to define a boolean flag. It creates a new bool flag with the specified name, default value, and usage string. In this article, we will explore the flag.Bool() function with examples. Syntax The syntax of the flag.Bool() function is as follows − flag.Bool(name string, default bool, usage string) *bool Parameters name − A string that specifies the name of the flag. default − ... Read More
A simple buzzer can be connected to the ESP32 controller for producing sound. It can also be used to produce melodies. In this article, using two different examples, the C code is used on Arduino to make the buzzer play the melody. In the first example, “Twinkle Twinkle Little Star”, the poem’s notes are played and in the second example, another famous poem “Jingle Bell” is used for playing the note while making two colored LEDs on and off to create a light show with music. Example 1: Playing the poem notes using buzzer and ESP32 The circuit is made ... Read More
Covid-19 and coronavirus are terms that have become synonymous with the ongoing global pandemic. However, it is essential to understand that these two terms are not interchangeable. While both refer to the same disease, there are some critical differences between Covid-19 and coronavirus that everyone should be aware of. What is Covid-19? Covid-19 is the name for new coronavirus, which was initially discovered in Wuhan in China in late 2019. Countries in which cases have occurred − The covid-19 disease has now been declared a pandemic by the WHO since it has spread to every continent. The first place ... Read More