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Golang is a powerful programming language that provides a variety of features to work with structured data. One of these features is the ability to use structs as keys in maps. In this article, we will explore how to write a Golang program that uses structs as map keys. What is a Struct? In Golang, a struct is a composite data type that groups together zero or more values of various types. Structs are used to create more complex data types that can represent a range of objects. A struct is defined using the type and struct keywords, followed by ... Read More
Golang is a popular programming language that offers a range of powerful features. One of these features is the ability to use the switch statement with a string type variable. In this article, we will explore how to write a Golang program that uses a string switch statement. What is a String Switch? In Golang, the switch statement can be used to test a variable against a list of values. A string switch statement is a type of switch statement that is specifically designed to work with string variables. A string switch statement works by comparing the value of a ... Read More
Golang is a powerful programming language that offers a range of features and tools for building efficient and reliable applications. One such feature is the ability to use named return values and defaults in functions. In this article, we will discuss how to use named return values and defaults in Golang and why this feature is useful. What are Named Return Values and Defaults in Golang? In Golang, you can define named return values in a function signature, which can help make your code more readable and maintainable. Named return values allow you to define the names and types of ... Read More
Golang is a powerful programming language that offers a range of features and tools for building efficient and reliable applications. One such feature is the ability to define functions with variable argument lists. In this article, we will discuss how to use functions with variable argument lists in Golang and why this feature is useful. What are Functions with Variable Argument Lists in Golang? In programming, a function with a variable argument list is a function that takes an unknown number of parameters or inputs. These inputs can be of any data type, including integers, strings, or even other functions. ... Read More
Golang is a powerful programming language that offers a range of features and tools for building efficient and reliable applications. One such feature is the ability to define functions with multiple arguments. In this article, we will discuss how to use functions with two arguments in Golang and why this feature is useful. What are Functions with Two Arguments in Golang? In programming, a function is a set of instructions that performs a specific task. A function with two arguments, as the name suggests, is a function that takes two parameters or inputs. These inputs can be of any data ... Read More
Golang is a popular programming language that offers a range of features and tools for building efficient and reliable applications. One such feature is the ability to use functions as local variables. In this article, we will discuss how to use functions as local variables in Golang and why this feature is useful. What are Local Variables in Golang? Before we dive into how to use functions as local variables in Golang, let's first understand what local variables are. In programming, a local variable is a variable that is defined within a function or block of code. Local variables are ... Read More
Golang is a powerful programming language that has gained a lot of popularity in recent years. It offers many features and tools that make it easier for developers to create efficient and reliable applications. One of the features that sets Golang apart from other programming languages is the fallthrough keyword. In this article, we will take a look at how you can use the fallthrough keyword in your Golang programs. What is the Fallthrough Keyword in Golang? In Golang, the fallthrough keyword is used in switch statements to transfer control to the next case statement. When a case statement contains ... Read More
BMP180 sensor is a sensor that can be attached to a microcontroller on a breadboard and can measure the pressure, temperature, and altitude of a place. It can be connected to controllers such as ESP32 or Arduino and can be used by programs to read the values. In this article, using three different examples, the use of the BMP180 Sensor is demonstrated using ESP32. The circuit is made using an ESP32 microcontroller and BMP180 sensor and the programs to measure the temperature or pressure or altitude are written using Arduino software. Example 1 − Measuring the temperature of a place ... Read More
In Go, the switch statement can also be used with floating-point numbers. This feature can be useful in certain scenarios, where a floating-point value needs to be compared against different thresholds or ranges. In this article, we will go through an example program that demonstrates the use of switch statement on floating-point numbers. Syntax of Switch Statement with Float The syntax of switch statement with floating-point numbers is the same as that with any other type. The only difference is that the cases need to be specified as floating-point values. switch expression { case value1: ... Read More
In this article, using two different examples, the use of potentiometers is demonstrated using ESP32. In the first example, the trimmer type of potentiometer is used to vary the voltage between 0 and 3V. In the second example, the slider potentiometer is used on Wokwi Simulator to show the control of a servo motor. Wokwi simulator is software that can be used for running the code and virtually testing the results without buying the components. The actual diagram of the components is often different from those used in Wokwi, so the actual form of the slider potentiometer is given in ... Read More