HashCash - crypto currencies' algorithm
Introduction At the moment of writting this post, Bitcoin just hit $60,000 with a market cap over 1 ...
[CI] Webhook to trigger Jenkins' job
Happy New Year 2021, goodbye 2020 - the Covid Year 1. These days, I'm setting up CI tool for my tea ...
All new SwiftUI Property Wrappers in iOS 14
There are some new property wrappers added to SwiftUI. I will explain them by showing you the Old w ...
[Combine] assign(to:on:) causes memory leak
It seems Apple did fix this issue in iOS 14, by introducing the assign(to:) operator, which takes a ...
Renew Ghost Let's Encrypt SSL
SSH to your instance and switch to ghost's user. Then following these commands: 1. Install latest ...
From Coin Change to ATM withdrawals
Problem Just curious about how ATM works. Example, we provide it set of denominations {10k, 20k, 50k ...
May Leetcode Challenge - Day 31
Edit Distance Given two words word1 and word2, find the minimum number of operations required to co ...
May Leetcode Challenge - Day 30
K Closest Points to Origin We have a list of points on the plane. Find the K closest points to the ...