👋 I’m Geshan, Senior Software Engineer and a speaker.
I have more than 15 years of professional software engineering experience, currently located in Sydney, Australia serving Simply Wall St as a senior software engineer. I am a Google Developer Expert and I have actively participated as a speaker in:
and more. I am a technical writer too, blogging since 2007.
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Recently published
How to use JavaScript Promise.all with real-life code example
Learn how to use JavaScript Promise.all with a real-life Axios API get call code example compared to a sequential call.
Read postUsing Jest beforeEach to write better unit tests in JavaScript, with code example
Learn how to use Jest beforeEach to write better unit tests looking at given practial code example
Read postHow to use TypeScript optional parameters with example code
Learn how to use optional paramters in typescript function with a simple yet useful example in this post.
Read post10 useful Docker commands to get things done with a real-life example
Learn how to use 10 useful docker commands in this intro guide like run, exec, logs and cp to get more done with Docker.
Read postHow to append contents to a file using Node.js
Learn how to append text to a file using Node.js with callback, promise (async-await) and sync way in this easy to follow tutorial with code examples.
Read post