Hello, I'm Gopi. 👋
I am a software engineer with over 14 years of experience. I specialize in Java-based technology stacks and have worked for various startups, the European government, and technology giants in India and Europe.
I've mostly taught myself and am a digital nomad. I wanted to share my life lessons and experiences with everyone and encourage engineers to learn programming languages in a fun way.
Check out my written notes to uncover the most trending software topics and Online Courses to learn or upskill yourself.
How To Prevent cannot read property map of undefined
The "cannot read property map of undefined" error occurs when we try to call the map method on a variable that stores an undefined or null value.
How can I remove a specific item from an array in JavaScript?
Removing a specific item from an array is the most use case a developer runs into. You will learn more than 7 ways to achieve this.
A Complete Guide To JavaScript LocalStorage
localStorage is a property of the window object in JavaScript that allows you to store key/value pairs in a web browser. The data stored in localStorage persist even after the browser is closed, making it a useful tool for saving user data on the client side.
Java Strings Mastery
Arrays are fundamental data structures in computer science and serve as building blocks for complex ones.
How Strings Are Used In Collections?
Strings are often used as keys in various data structures in Java, such as HashMap, TreeMap, and HashSet. Understanding how strings work with these data structures is important for efficient and correct programming. Let's explore how strings are used in these data structures, how comparison and hash codes
StringBuilder vs. StringBuffer, Thread Safety
Thread Safety with StringBuffer When working with strings in Java, you might encounter situations where multiple threads need to modify a string simultaneously. In such cases, you need to ensure that your string manipulation is safe and does not lead to unexpected results or errors. StringBuffer is a class designed
Performance Comparison Of StringBuilder vs. String Concatenation
When working with strings in Java, the way you handle concatenation can significantly impact performance, especially if you are performing many operations. Let's compare the performance between using regular string concatenation and StringBuilder to understand which approach is more efficient and why. String Concatenation In Java, string concatenation
String, StringBuilder, and StringBuffer in Java
Efficient String Manipulation with StringBuilder When working with strings in Java, performance can be a concern, especially when you need to make frequent changes to a string, like appending or inserting characters. This is where StringBuilder comes in handy. It’s designed to be more efficient than using regular strings
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