Tim Mouskhelichvili • January 16, 2023 • 4 minutes to read
An array is one of the most frequently used foundational data structures in programming. But what is it exactly, and how does it work in TypeScript? In TypeScript, an array is a structure that stores values in sequential order [...]
Tim Mouskhelichvili • December 3, 2022 • 2 minutes to read
Often, a TypeScript developer needs to define an array of objects. Luckily, this is easy to achieve. In TypeScript, to define an array of objects, you can: Use an existing type or interface. Use an inline type. Use the [...]
Tim Mouskhelichvili • October 5, 2022 • 2 minutes to read
In TypeScript, arrays are one of the most useful data structures. They can store a collection of values of any data type. Sometimes, a developer might need to get the last element of an array. Luckily, it is easy [...]
Tim Mouskhelichvili • October 3, 2022 • 2 minutes to read
When declaring an empty array in TypeScript, the compiler cannot infer its type by default. That's why you need to specify the array's type explicitly. Luckily, it is easy to do. Here is one way to declare an empty [...]
Tim Mouskhelichvili • September 20, 2022 • 2 minutes to read
JavaScript offers many ways to iterate over an array, for example, the for loop, the map function, and the forEach function, which is the subject of this React guide. In React, the forEach function is used to iterate over [...]
Tim Mouskhelichvili • September 14, 2022 • 3 minutes to read
Often when developing a React application, a developer needs to filter data. Luckily, JavaScript offers a simple way to do it. In React, the easiest way to filter data is to use the built-in JavaScript filter function. This article [...]
Tim Mouskhelichvili • August 10, 2022 • 3 minutes to read
A common task for web developers when working on a React web application is to loop through an array of objects and render components for each item. Luckily, React with JavaScript offer different simple ways to archive it. To [...]
Tim Mouskhelichvili • August 9, 2022 • 3 minutes to read
One of the most typical tasks when working on a React application is rendering a list of objects as components. The easiest way to map an array of objects in React is to use the JavaScript map function. This [...]
Tim Mouskhelichvili • June 8, 2022 • 3 minutes to read
The reduce function lets the developer iterate over an array and execute a reducer on each array element. This function returns a single result. Here is a simple example of the reduce function in TypeScript. const arr = [ [...]
Tim Mouskhelichvili • March 25, 2022 • 3 minutes to read
The forEach function lets the developer iterate over an array and executes a callback function on each element of the array. Here is a basic example of the forEach function in TypeScript. const animals = [ 'dog', 'cat', 'cow' [...]