React Native Boilerplate

A React Native boilerplate using React Native, React Navigation, React Redux Toolkit, React Native Bootsplash, React Native Onboarding Swiper, Redux Persist, Formik, Yup, Lottie, Axios…

04/11/202104/11/2021React Native

BUG! exception in phase ‘semantic analysis’ in source unit ‘_BuildScript_’ Unsupported class file major version 61

Issue: In Arch Linux, when try to execute npm run android, it throws the following error. Solution: Do not use Java 17 Open JDK as…

04/11/202104/11/2021Linux

Change Java OpenJDK version in Arch Linux

Issue: When execute npm run android for React Native, the build error occurred as below: Solution: It’s because currently Java version is lower than 11.…

30/04/202130/04/2021Databases

MongoDB exception in initAndListen: old lock file, terminating

Reference: https://github.com/docker-library/mongo/issues/62#issuecomment-568308941 Error Message: Fix for docker-compose.yml:

26/04/202126/04/2021Platforms

Disable Swap in Raspberry Pi

Reference: https://www.element14.com/community/thread/21377/l/how-do-i-permanently-disable-the-swap-service

21/03/202129/07/2021Finance

바이낸스 자동 매매 트레이딩 봇

추적 매수/매도 기법(Trailing buy/sell strategy)을 이용한 자동화된 바이낸스 자동매매 프로그램 소스 코드: https://github.com/chrisleekr/binance-trading-bot 최신 업데이트 정보는 README.md에 서 확인 가능합니다. 이 페이지는 한국어로 프로그램에 대한 설명만 적혀있습니다.…

26/01/202126/01/2021React.js

React.js – TypeError: Cannot read property ‘setState’ of undefined

Problem code Error Solution https://stackoverflow.com/questions/32317154/react-uncaught-typeerror-cannot-read-property-setstate-of-undefined https://reactjs.org/docs/handling-events.html With ES5 With ES6

13/12/202013/12/2020Linux

Convert gnome-boxes virtual machine image to Oracle Virtual Box image

First convert gnome-boxes image to Virtual Box image Open Virtual Box Click Add button and follow below steps

05/12/202005/12/2020Uncategorized

Clear Kubernetes current context

https://github.com/kubernetes/kubectl/issues/483#issuecomment-503568886

21/11/202028/11/2020Frameworks

실시간 환율 받아오기 (Get real-time currency information)

Code snippet to retrieve real-time currency from exchangeratesapi.io

07/11/202029/07/2021Finance

Binance Auto Trading Bot – Buy low/Sell high with stop loss limit/Trade multiple coins

Automated Binance trading bot with trailing buy/sell strategy Github: https://github.com/chrisleekr/binance-trading-bot Warnings I cannot guarantee whether you can make money or not. So use it at…

24/07/202024/07/2020Server

Gitlab troubleshooting

Environment: Gitlab is running under docker Error with ActiveModel::UnknownAttributeError (unknown attribute ‘author_name’ for SecurityEvent.):

16/05/202029/08/2020Node.js

Image Optimisation Service

Github: https://github.com/chrisleekr/image-optimisation This is a practice project. The project contains Node.js API that optimise images – jpg, png, svg, and gif. Node.js, Express, Webpack, Imagemin…

10/04/202029/08/2020Frameworks

애자일 스프린트 회고 도구(Agile Sprint Retrospective Tool)

스프린트(Sprint)를 운영하면 2주에 한번 아니면 한달에 한번씩 정기적인 “회고(Retrospective)”를 해야한다. 모든 팀원이 솔직하게 익명으로 자신의 의견을 개진해야하고, 그 의견들을 다같이 토론하여 프로젝트 운영에 반영해야 팀의…

13/03/202029/08/2020MongoDB

Node.js + MongoDB RESTful API Boilerplate

Github: https://github.com/chrisleekr/nodejs-mongodb-api-boilerplate This is a sample project that I followed the tutorial Build Node.js RESTful APIs in 10 Minutes written by Olatunde Garuba. How to start $…

16/12/201928/11/2020Linux

Mount iPhone/iPad in Arch Linux

Install libimobiledevice and ifuse$ yays libimobiledevice ifuse (* important) Pair with iPad – make sure iPad is connected via USB cable$ idevicepair pair Run usbmuxd…

10/10/201929/08/2020Node.js

Node.js (REST API) + Vue.js/Nuxt.js (Frontend/Backend) + MySQL Boilerplate

Github: https://github.com/chrisleekr/nodejs-vuejs-mysql-boilerplate This is a boilerplate project. The project contains Node.js REST API and frontend/backend developed by Vue.js with BootstrapVue. API Node.js, Express, Webpack, Express…

05/09/201929/08/2020Linux

When Arch Linux installation, cannot find nvme0n1 in DELL XPS 13

When you do lsblk, it does not show your SSD, then it means RAID for SATA Operation is on. Simply open Bios -> System Configuration…

17/08/201929/08/2020Docker

Linux Docker uses excessive memory

Issue: I have a 16G memory and configured swap as 16G. When start mysql docker, mysqld uses crazy amount of memory and make the system…

12/07/201929/08/2020Linux

VirtualBox + Windows 7 USB storage not recognised

Environments: Arch Linux Oracle VM VirtualBox 6.0.8 + Extension Pack Issue: In “Device Manager”, Universal Serial Bus Controller driver is not installing correctly. USB storage…