Visual Studio Code with Python auto-formatting
December 08, 2020I was writing python code and facing issues with formatting. It becomes a problem with code review and toolings to detect these issues. Life…
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Blog Posts
Install ubuntu desktop on AWS instance with Chrome Remote Desktop
December 02, 2020Nowadays, we have moved many things to the cloud, including your photos, your files and your servers, what about your desktop environment…
Install ubuntu on an external drive using macOS
December 01, 2020If you are using mac hardware, but also want to use ubuntu, you can install ubuntu on an external hard drive without risk to remove your…
Fix AWS amplify angular app error on Access Denied error
September 19, 2020When deploy your angular app on AWS amplify, the first landing page is able to load. However, when you defined a path in your router, and…
Write your Android app to run in background mode as a service
September 12, 2020In some use cases, you may encounter a problem when your users put your app in the background mode or screen lock state, then your app…
Caveat on Android in app browser
September 07, 2020When you’re developing a web application, you would need to consider browser compatibility issues. The problem I faced was an android…
Angular Error Explained: Expression Changed After It Has Been Checked Error
September 07, 2020A colleague of mine encounters an error message while developing an Angular frontend app. The error message is like this:
Writing unit test cases with Karma for angular component
August 07, 2020I would like to convince you to start writing unit test cases for your angular web app. Shorten time to production is not an excuse to…
Setup Django server with Apache virtual host and Python virtual environment
August 05, 2020It took me a while to get everything works together, so I would like to document some of the steps and save you some time in the future.
Stop downloading app for anything and everything
May 02, 2020Apps are irrelevant. Most of the tasks you perform in a native mobile app can be performed in a browser web app as well. We don’t need to…
Install Ubuntu 20.04 LTS on MacBookPro14,1
April 24, 2020Ubuntu 20.04 just released and I can’t wait to try it out and install on my MacBook Pro 14.1 model. I am going to tell you what works and…
Handle user close browser event with JavaScript
April 17, 2020For some scenarios, you don’t want the user to close the browser and exit the journey. For example, if a user is filling in a form without…
Import npm modules to AWS lambda function
April 11, 2020When you create a node.js lambda function on Amazon Web Service (AWS), and start editing using the online editor, then you want to npm…
Fix WordPress plugin installation permission issue
April 10, 2020Problem: When I try to install a plugin at WordPress, I hit an error:
Fix WordPress with all pages returning 404 not found
April 10, 2020Problem: I encounter a weird problem in WordPress, where the homepage is able to load properly, but all the pages are failing to load. An…
Fix endless redirection with https setting at WordPress and using AWS load balancer
April 10, 2020Problem: I set up a WordPress blog at 2 Amazon Web Service (AWS) EC2 instances at different availability zone. In front of them, a elastic…
Install php7.2 instead of php5.4 on Amazon Linux 2
April 10, 2020Problem: When you start a new Amazon Linux 2 AMI server, and try to install php via command:
Reading large file using Node.js
April 04, 2020I got a task to analyse a massive amount of log files. When you open the file in Excel, it would simply freeze your laptop. Given the…
Migrate WordPress MySQL to AWS RDS
April 04, 2020In this article, I am going to explain how to migrate your WordPress local MySQL database to Amazon Web Service (AWS) Relational Database…
Remove .DS_Store files in git
March 27, 2020If you are a mac user and using git, you may accidentally commit a file with .DS_Store. Your windows colleague would be confused what does…
Git ignore already modified files
March 18, 2020I encounter a rare scenario that there is a file modified, but I don’t want to commit this change on git. There are many ways to do such…
Find and kill process locking specific port on Mac
February 18, 2020Problem: Sometimes when you start a local node.js server, it may be stuck running at the background. When you try to start the server…
How to work with Product Manager as a Software Engineer
February 12, 2020I know that feel bro, cuz I’m also a software engineer. With years of experience, I have met some great Product Managers (PM) and a couple…
Register Sling Servet in Adobe Experience Manager
January 29, 2020In Adobe Experience Manager (AEM), a Sling servlet can be used for handling some RESTful request-responses ajax call. It is written in…
Install Nextcloud on AWS EC2 and using S3 storage
December 07, 2019I want more privacy, so I decided to minimize the use of Google products. I can replace Chrome with Firefox, replace Gmail with ProtonMail…
Debug php code on browser
December 04, 2019In javascript, you can console.log(‘whatever”) in your browser for troubleshooting. However, in php code, a little bit trick is required…
Install Ubuntu 19.10 on Macbook Pro 13,1
November 10, 2019I was frustrated by the macOS Catalina, so I decided to switch to Ubuntu as the main operating system on my MacBook Pro, 13-inch version…
Setup MongoDB with Koa.js
November 03, 2019I’m building a Koa.js server and need to connect to MongoDB to store and retrieve data. Here is how to do it with some simple steps:
Migrate blog from medium to ghost 3.0
November 03, 2019Ghost 3.0 just released. I hate Wordpress with PHP but love Ghost with Node.js. It is open source and the dark theme is pretty cool. So I…
Setup npm proxy in a corporate network
October 01, 2019It’s painful to work behind a corporate network and everything does not work out of the box. Simple command like npm install would not…
My MBA study trip to Germany
August 24, 2019The key personal learning from the Germany trip is anti-fragile. Travelling involves many uncertainty and randomness. Despite my flight…
Case study: Li & Fung family business
August 24, 2019In this article, I would discuss the lesson we can learn from this Li & Fung’s family. The insights we can get from this family to last…
MiFID II — What are the impact and opportunities for investors?
May 18, 2019MiFID II is designed to bring greater transparency and investor protection to the financial markets. It introduces more protection for all…
Getting real-time data from Web to Excel
October 29, 2018An undergraduate student asked me how to get real-time data from a website into an excel. The data is used for his homework assignment…
Enable HTTPS on AWS EC2 instance with Node.js and Nginx on Ubuntu server
August 01, 2018I have an AWS EC2 instance running with NodeJS and Nginx on a Ubuntu 16.04 server. I am going to show you how to enable HTTPS instead of…
Replace text in XML files with Powershell
July 31, 2018Yesterday I was working at a client site. It is a Windows server isolated from the external network. It is not allowed to install any…
Replace text in a file using Batch script
July 31, 2018Yesterday I was working at a client site. It is a Windows server isolated from external internet access and prohibited to install any new…
A look into Chile’s startup ecosystem
July 12, 2018In retrospective, my Chile trip was amazing. Despite it was tough to fly over 30 hours from Hong Kong and suffering from jet lag, the…
Upgrade AppMon from version 6.5 to 7.1
July 10, 2018I am working on an upgrade for Dynatrace AppMon from version 6.5 to 7.1. AppMon is a tool for gathering performance data, trusted by many…
AWS Cognito User Pools with mobile SDK for iOS using custom challenge
June 07, 2018I was integrating AWS Cognito user pool to an iOS application. The sign-in feature is using a custom challenge for authentication, but…
Managing your boss
November 19, 2017Managing your boss means consciously working with the higher level manager to obtain the best possible results for you in the traditional…
Leadership that gets results
November 19, 2017The research found that six distinct leadership styles have a direct impact on the working atmosphere and financial results in terms of…
Debug iOS traffic on iPhone device
November 09, 2017I’m doing production support for an iOS mobile app. The pain point is hard to debug HTTPS traffic between the iPhone and our server. In…
How to motivate your problem people
November 06, 2017In order to get people to follow your lead, the only way to succeed is by getting the people to motivate themselves. The common mistakes…
Learning Charisma — Transform yourself into the person others want to follow
November 06, 2017Charisma can be learned. We can practice acquiring the ability to inspire followers towards a clear vision and instil deep levels of trust…
Evidence-based management
September 23, 2017Life is a series of decisions. From day to day business operations to critical decision for the future directions of a firm, managers are…
The challenge of Nexus, Scaled Professional Scrum (SPS)
July 16, 2017I am in a project running with scaled scrum using Nexus framework. Nexus means a relationship or connection between people, which is a unit…
Internet Border Gateway Protocol (BGP)
June 04, 2017This article is about the Internet Border Gateway Protocol (BGP). It is a standardised exterior gateway protocol to exchange routing and…
Pseudo-scrum – a hybrid of waterfall and agile
April 29, 2017Let me tell you the truth: you’re not agile. You claimed to be a scrum team, you did all the ceremonies: standup, demo and retrospective…
Deploy Koa.js Application to AWS EC2 ubuntu instance
January 07, 2017I am developing a Koa application, which is a new web framework designed by the team behind Express. Here is a step-by-step tutorial on how…
Things I learned from IoT project
November 29, 2016It was challenging to work on an Internet of Thing (IoT) project for a Bluetooth smart device in the last year, which is different from…
Fix iOS 10 permission crashes error
October 08, 2016I am developing an app with request access to the user’s microphone. It was working fine with iOS 9, but since upgrade to iOS 10, it…
Hello future Fin-Tech in Hong Kong
September 24, 2016Once upon a time, my teacher taught me that Hong Kong is an international financial centre. Every day, we enjoy economic success with a…
What is Blockchain and how is it used?
September 16, 2016A lot of friends ask me questions about the emerging of the Blockchain revolution. According to the recent news, four of the world’s…
Install Jupyter Notebook in Mac OS X
July 26, 2016I’m using Anaconda way to install the jupyter notebook.
Launching RancherOS on AWS EC2
June 13, 2016RancherOS is a Linux distro for running Docker container. There is an AMI (Amazon Machine Images) in the marketplace, but it took me a…
Deploy Java Spring server with Docker container
June 02, 2016I am deploying a Java Spring server using Docker. Here are the steps:
Apple Push Notification with Java Spring Framework
June 02, 2016I am implementing a Java Spring Framework server which sends an Apple Push Notification to an iPhone using Swift. Here are the things you…
Submit Unity 3D Game to Mac App Store
May 28, 2016After 3 months of development on the weekends, our unity 3D game is ready to release and deploy to App Store. However, it was not straight…
Resolve merge conflict for Unity Game Engine
May 21, 2016I’m working in a group of 4 teammates for a unity 3D game project on the weekends. It’s pretty fun, but we have encounter problems with…
Trivial facts about Javascript date
April 29, 2016Fact 1:
It’s not a tech problem, stupid
April 09, 2016I love helping people and solving complex problems, but it’s frustrating to see issues that are beyond the scope of a programmer to fix. If…
What I learned from building a large-scale application for overseas clients
March 20, 2016The I.T. industry in China is a rapidly growing market. Over the last 1 year in Hong Kong, I’ve been lucky enough to work on an exciting…
How to use Webpack with React and Bootstrap
March 06, 2016I was setting up a project today using Webpack, React and Bootstrap without jQuery. This supposed to be a straight forward task but turns…
How to be a good consultant?
December 20, 2015I’m a Software Engineer with a leading Australian technology company. I’m smart, skilful, hard-working… but these are not enough to be a…
Understanding Optional and Exclamation Mark in Swift
November 13, 2015Swift is very strongly typed. All variables have a type. There is a type in Swift called optional. Optional can have only two values:
Connection between .h and .m files in Objective-C
November 08, 2015When first open an objective-C project in X-code, the .h and .m files look confusing. It is important to understand the simple connections…
Install Hadoop on AWS Ubuntu Instance
October 15, 201515 October 2015
Install MongoDB on Mac OS X
October 09, 2015Firstly, install homebrew, which is the missing package management tool for OS X:
6 Fun Things To Do In Hanoi, Vietnam
October 09, 2015My goal is to travel around the world! Yep, this is a bit too ambitious. One important principle I learnt from software engineering is how…
Enable Automatic Login for OS X El Capitan
October 09, 2015The Problem
What To Expect From Coding Bootcamps
October 09, 201524 August 2015
Ember Inject Controller
October 09, 2015The problem I got:
Batch Crop Images using ImageMagick
July 18, 2015One of the tasks I perform today is batch cropping a lot of pictures. I have found ImageMagick very useful to scales and crop the images…
Switching from Sublime Text to Atom
June 28, 201528 June 2015
How To Upgrade Ghost Blog With Command Line
June 28, 2015Step 1: Change directory into your path that installed the ghost blog. For example, mine is:
SSH: Fix Unprotected Private Key Error
June 28, 2015The problem
Fix Ruby Gems Permission Error
June 28, 2015The Problem
6 SURVIVAL TIPS FOR NON-KOREAN SPEAKER IN BUSAN AND VICINITY
April 16, 2015Aluum-dabbda! This is how to say “beautiful” in Korean. Same phrase could be used to describe the gorgeous environment in Busan, Gyeongju…
Java: Variables are Always Passed by Copy
March 14, 2015I am learning Java. One of the important concepts to understand is whether arguments of a function is passing by copy or reference.
3 Reasons to love React
March 14, 2015Recorded at the Hong Kong JavaScript and Node.js meetup on 3 Mar 2015.
Common npm permission issue
February 20, 2015If you are using mac and install nodejs via pkg file downloaded from the official website, you are likely to encounter this error message…
Sublime Text 3: OS X Command Line
February 20, 2015Sublime Text 3 includes a command line tool, subl. However, it does not work out of the box after you install the editor in OS X Yosemite.
12 Things You Need To Know About ECMAScript 6
February 20, 2015ECMAScript 6 is the next version of the JavaScript standard. Here are the 12 cool things you need to know about ES6:
My Review of Hack Reactor Remote Beta
February 20, 2015I took the Hack Reactor remote beta at the second cohort in Hong Kong to improve my technical skills in JavaScript. It was well structured…
Beer Recommendation Engine using PredictionIO
February 20, 2015We all love beers. And today, we face an unprecedented variety of options. We are overwhelmed by too many choices and couldn’t decide..
AngularUI: Mouseover event for Google maps markers
February 20, 2015It took me awhile to figure this out, so I think it probably deserves a blog post to explain the issue. I was a bit confused on how to …
Hacking New Year’s Resolutions 2015
February 20, 201592% of New Year’s resolutions fail. Why? This sounds like an fascinating problem waiting to be solved.
Angular.js factory: Handle $http asynchronously
February 20, 2015When I was using $http service to get data from a remote API, my code below was not able to return data back to the controller.
Setup proxy server with Express
February 20, 2015I am working on a project using BreweryDB. I was trying to load some data from the API, but they don’t support jsonp.
Angular UI bootstrap: Open first accordion with ng-repeat
February 20, 2015I was using accordion directive in Angular UI Bootstrap 0.1.2. Reading the demo page, there is an example to show how to open the first..
Note on Ionic framework: Android platform in OS X
February 20, 2015In this blog post, we are going to walk through a couple error messages to install dependencies for Android platform of Ionic framework…
Configure CircleCI with Karma test
December 22, 2014I was setting up continuous integration using CircleCI with karma test for Angular on Heroku. The test was working on local host, but…
How to upload files with Meteor.js?
December 22, 2014NOTE: This tutorial is using Meteor 1.1.3 with cfs:standard-pacage 0.0.2 (15th December, 2014). Since this feature is under active…
Q&A with General Assembly Hong Kong
December 22, 2014I was invited by General Assembly (GA) Hong Kong to talk about my experience in the Web Development Immersive (WDI) course.
Does Hack Reactor makes you smarter?
December 22, 2014I wake up at 12:00 am every morning. What wakes me up is not just the alerm clock, but also my goal to be a software engineer.
Testing with Mocha: Array Comparison
December 22, 2014Why do arrays not compare the way other values do? Because typeof array is an object.
How to customize Sublime Text default Auto-complete
December 22, 2014I use Sublime text 3 everyday, especially the JavaScript autocomplete feature.
Build awesome chat app in 5 mins with Meteor
December 22, 2014In this tutorial, I am going to show you how to write a simple chat application using MeteorJS.
6 funny facts that I discovered in Melbourne
December 22, 2014Sydney or Melbourne? This is a childish rivalry between the two cities. I always think it’s like comparing apples to oranges.
6 things I love and hate about Hong Kong
December 22, 2014The status is complicated. I love you. Cause you are amazing, just the way you are.
6 tactics in Sydney when there are too many things to do
December 22, 2014You only have a few days in Sydney? No worries at all, with my tactics you’ll discover the best things that this vibrant city has to offer…
6 reasons why you should travel to Brisbane
December 22, 2014Visit Brisbane is fun. Friendly people. Beautiful environment. Also, it is less expensive than Sydney and Melbourne for price sensitive…
About
Experience in software development, consulting services and technical product management. Understanding of business and technology with an MBA in Finance and a Master degree in Computer Science. AWS Certified Solution Architect and Developer associate with experience in building products from scratch and serving as a charismatic leader.
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