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Hakjoon Sim

Developer who lives in Seoul. Like programming and doing nothing.

About me

Blog renewal with Gatsby

January 14, 2020

Starting new year 2020, I decided to renew my blog. I built my previous blog with jekyll. It was almost 4 years ago, and at that time, I…

Javascript(ES6) - Map and Set

May 03, 2018

Before ES6, when we needed Map(keys, values) or Set like any other languages provides, it is a quite pain point. Because javascript does not…