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…
Category: Frameworks
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…
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.…
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.…
실시간 환율 받아오기 (Get real-time currency information)
Code snippet to retrieve real-time currency from exchangeratesapi.io
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…
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…
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…
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 $…
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…
[PHP+MySQL] 간단한 카카오 i 오픈빌더 챗봇 만들기 (Kakao i Open Builder)
카카오 i 오픈빌더 (Kakao i Open Builder)를 이용한 플러스 친구 챗봇 (PHP + MySQL) 백엔드 프로젝트 이 프로젝트는 샘플 테스트용으로 카카오톡 플러스 친구 챗봇을 구현하기…
Workerbox (Service Worker)로 사이트 로딩 속도 향상 시키기
Service Worker: 웹페이지와 별개로 브라우저가 백그라운드에서 실행시키는 자바스크립트 코드. 푸쉬, 동기화, 오프라인 모드 지원 https://developers.google.com/web/fundamentals/primers/service-workers/ Workerbox: 구글에서 제공하는 자바스크립트 라이브러리로써 웹앱의 오프라인 지원을 쉽게 할…
Get all validation errors for Angular form
Reference 1: https://gist.github.com/JohannesHoppe/e8d07d63fc345a5fdfdf4fc4989ef2e4 import { FormGroup, ValidationErrors } from ‘@angular/forms’; export function getFormValidationErrors(form: FormGroup) { const result = []; Object.keys(form.controls).forEach(key => { const controlErrors: ValidationErrors =…
Yii2 errors – Failed to clone the git and “extra.asset-installer-paths” option is deprecated`
Error 1. The “extra.asset-installer-paths” option is deprecated, use the “config.fxp-asset.installer-paths” option Update composer.json by removing asset-installer-paths and add fxp-assets { … “extra”: { “yii\\composer\\Installer::postCreateProject”: { “setPermission”:…
Javascript project devtools
Javascript project development tools Babel: https://babeljs.io/docs/en/ Javascript compiler – Transform syntax, Polyfill features and so on $ babel -o dist/package.js dist/package.js Standard: https://standardjs.com/ Javascript style guide, linter…
Local workspace file (‘angular.json’) could not be found.
After upgrading Angular application using ncu -a, got an error message Local workspace file (‘angular.json’) could not be found.</code. $ ncu -a $ npm run…
Setup Gitlab & Jenkins on Raspberry Pi 2
Objective: Installing and configuring Gitlab and Jenkins on Raspberry Pi 2 Background: I currently have extra Raspberry Pi and would like to use for…
Time Clock Management System developed with Yii2 REST API + Angular 2 + Docker
Time Clock Management System (Yii2 REST API + Angular 2 + Docker) Source Repo: https://github.com/chrisleekr/time-clock-management-system-yii2-rest-api-angular2-docker This is a personal project for learning Angular 2.…
Missing Authroization header in request
When developing REST API in Yii2, I found some development environments do not populate Authorization header in the request; as a result, I was not…
Get AWS EC2 tags to environment parameters for apache2
Objective: AWS instances are assigned tags per instance. Need tags to be environment parameters for Apache2; thus, web application can retrieve environment parameter. Step…
PHP imap_open() error – INBOX: invalid remote specification (errflg=2)
INBOX: invalid remote specification (errflg=2) Got following error when use imap_open() in PHP? Notice: Unknown: Can’t open mailbox {imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX: invalid remote specification (errflg=2)…
PTV Timetable API sample code for PHP
API Page: https://www.ptv.vic.gov.au/about-ptv/ptv-data-and-reports/digital-products/ptv-timetable-api/ptv-timetable-api-reference/ 1. Request API key by sending email How to register for a key and developer ID > Send an email to APIKeyRequest@ptv.vic.gov.au…
Vagrant Scalable Web Application Architecture
Deploying scalable web application using Vagrant, Consul, Consul Template, nginx and HAProxy Source Repo: https://github.com/chrisleekr/vagrant-scalable-web-application-architecture This is proof-of-concept project to spin up scalable web application architecture…