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What are Objects in Golang? Objects are defined on the structs and store Key-value pairs of data together in go programming. There are numerous methods for producing an object. A struct is a user-defined type that groups together a collection of fields (also known as properties or data members) and methods. A struct can be defined using the type keyword, followed by the struct name and a struct literal that defines the fields of the struct. Method 1: Using a user-defined function Algorithm Step 1 − First, we need to import the fmt package. Step 2 − Then we ... Read More
What is a Matrix? A matrix is a collection of numbers that are arranged in rows and columns, which is a two-dimensional array. Here we will use three examples to find the sum of elements and compare each element of the matrix for the same using the Golang program. Algorithm Step 1 − Import the fmt package. Step 2 − Now we need to start the main() function. Step 3 − Then we are creating a matrix naming matrixA. Step 4 − Print the matrix on the screen using fmt.Println() function. Step 5 − Initialize a new variable called ... Read More
The price range selector allows us to select two values representing the range. Sometimes, we require to create a range slider to allow users to select a range. For example, we can allow users to select a minimum and maximum price using the price range selector. We can also show the products by filtering based on the selected minimum and maximum prices. In this tutorial, we will learn to create a price range selector using various libraries in ReactJS. Using the material UI to create a range selector The material UI provides various components we can import into the ... Read More
Nowadays, applications use a one-time password or magic link for authentication, but we can’t ignore the authentication using the username and password. Whenever we allow users to register with a username and password, we should ensure that the password users have entered is strong. So, it can be unbreakable by hackers. In this tutorial, we will learn to verify the security level of the password in ReactJS. Create a Custom Validation Algorithm We can create a custom validation algorithm to check if the password is strong or weak. We can create regular expressions for lowercase, uppercase, and numeric ... Read More
The HTML collection is an array of HTML elements. We can access every element of the collection using its index. Also, we can iterate through the array of HTML collections and get all HTML elements of the collection one by one. Sometimes, we require to use for loop to iterate through the collection of all HTML elements. For example, we have created a group of checkboxes, and when the user presses the clear button, we require to clear all checkboxes. We can access all checkboxes in the HTML collection, iterate through it, and uncheck every checkbox. In this tutorial, ... Read More
Sometimes, we require to uncheck a radio button using JavaScript or JQuery. For example, we use the radio button in the form. When the user presses the clear form button, we need to uncheck all radio buttons and allow again users to choose any option from the radio button. In this tutorial, we will learn various methods to uncheck single or multiple radio buttons using JQuery or JavaScript. Use the JavaScript to uncheck the radio button We can access the radio button in JavaScript using id, tag, name or other ways. After that, we can uncheck the radio ... Read More
While working with the data, removing the unnecessary white spaces from the string is necessary. So, we need to trim a string at the beginning or end. If we keep unnecessary white spaces in the data, it can cause some issues. For example, while storing the password, if we don’t trim the white space, it can mismatch when users try to log in another time to the app. In this tutorial, we will learn to trim a string at beginning or ending in JavaScript. Use the trimRight() method to trim the end of the string The trimRight() method ... Read More
We have given a string and need to convert it into a function in JavaScript. Sometimes, we get mathematical or function expressions in the form of the string, and executing that expression, requires converting strings into the function expression. In this tutorial, we will learn different approaches to converting the given string into a functional or mathematical expression. Use the eval() method The eval() method takes the expression as a parameter and evaluates the expression. For example, if we pass the ‘2 + 2’ string as a parameter of the eval() method, it returns 4 as it evaluates the ... Read More
What is Static Keyword in Golang? The term "static" is used to describe variables, functions, and methods that have a fixed or unchanging value or behavior. In Go, the static keyword does not exist. In go we use the term "variables" to describe the memory locations where data is stored and manipulated. Static variables have a property of preserving their value even after they are out of their scope! Hence, static variables preserve their previous value in their previous scope and are not initialized again in the new scope. Algorithm Step 1 − First, we need to import ... Read More
In JavaScript, the iterator is a collection of elements through which we can iterate and access a single element every iteration. The set, map, or object is an iterator in JavaScript, and we can’t access the elements of the iterator using the index like the array. So, we first require to convert the iterator into the array. Here, we will use different methods like an array.from(), etc., to convert an iterator to the array. Use the for-of loop The for-of loop iterates through every element of the iterator lie set and map. Inside the for-of loop, we can ... Read More