--- title: "Wiseman Umanah (@wisemanumanah) | Hashnode" description: "Code with purpose. Read the latest articles by Wiseman Umanah on Hashnode." url: "https://hashnode.com/@wisemanumanah" --- @wisemanumanah # Wiseman Umanah @wisemanumanah · Nigeria, Africa · Joined July 2023 Code with purpose. ### [Step-by-Step Guide to Launching an ERC20 Token on Sepolia via HardHat](https://techwhiz.hashnode.dev/step-by-step-guide-to-launching-an-erc20-token-on-sepolia-via-hardhat?utm_source=hashnode&utm_medium=feed) Learn to deploy your ERC20 token on Sepolia with Hardhat. Follow our step-by-step guide to setup, compile, and verify your smart contracts 7 min read · [techwhiz.hashnode.dev](https://techwhiz.hashnode.dev/step-by-step-guide-to-launching-an-erc20-token-on-sepolia-via-hardhat?utm_source=hashnode&utm_medium=feed) [Apr 25, 2025](https://hashnode.com/posts/step-by-step-guide-to-launching-an-erc20-token-on-sepolia-via-hardhat/680b060310ff8e2235f8d09d) ### [Postmortem: What Happened?](https://techwhiz.hashnode.dev/postmortem-what-happened?utm_source=hashnode&utm_medium=feed) Postmortem is simply a report of what previously happened usually after a bug fix in the software industry. A postmortem is a process intended to help you learn from past incidents. It typically involves an analysis or discussion soon after an event ... 4 min read · [techwhiz.hashnode.dev](https://techwhiz.hashnode.dev/postmortem-what-happened?utm_source=hashnode&utm_medium=feed) [Apr 13, 2024](https://hashnode.com/posts/postmortem-what-happened/661af6bda51c749c53033b0b) ### [What Happens When You Type Www.google.com Into Your Web Browser](https://techwhiz.hashnode.dev/what-happens-when-you-type-wwwgooglecom-into-your-web-browser?utm_source=hashnode&utm_medium=feed) It's a fascinating process, isn't it? You type in www.google.com, and within milliseconds, a fully interactive webpage appears before you. But pause for a moment and ponder—what magic occurs in those milliseconds? How does your web browser retrieve t... 12 min read · [techwhiz.hashnode.dev](https://techwhiz.hashnode.dev/what-happens-when-you-type-wwwgooglecom-into-your-web-browser?utm_source=hashnode&utm_medium=feed) [Mar 17, 2024](https://hashnode.com/posts/what-happens-when-you-type-wwwgooglecom-into-your-web-browser/65f77ec1692a49119d6997de) ### [Big O Notation And Time Complexity](https://techwhiz.hashnode.dev/big-o-notation-and-time-complexity?utm_source=hashnode&utm_medium=feed) Big O is a notation used for describing the complexity(whether space or time complexity) of a program. This concept describes how much time it takes to run your function with respect to the size of the input to the function. In this lesson, we will f... 4 min read · [techwhiz.hashnode.dev](https://techwhiz.hashnode.dev/big-o-notation-and-time-complexity?utm_source=hashnode&utm_medium=feed) [Mar 11, 2024](https://hashnode.com/posts/big-o-notation-and-time-complexity/65eed60e04cb70446f2ea6e1) ### [Process Management And Handling](https://techwhiz.hashnode.dev/process-management-and-handling?utm_source=hashnode&utm_medium=feed) What happens when you run a program or an app in your system, the system assigns a unique digit to it. This is what is know as the PID of running process, running programs are known as process in a computer system and they are properly managed by the... 6 min read · [techwhiz.hashnode.dev](https://techwhiz.hashnode.dev/process-management-and-handling?utm_source=hashnode&utm_medium=feed) [Feb 22, 2024](https://hashnode.com/posts/process-management-and-handling/65d7852ac39e7829d6077b5d)