Victor's Notes

When 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…

In 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…

When you’re developing a web application, you would need to consider browser compatibility issues. The problem I faced was an android…

A colleague of mine encounters an error message while developing an Angular frontend app. The error message is like this:

I 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…

It 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.

Apps 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…

Ubuntu 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…

For 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…

When you create a node.js lambda function on Amazon Web Service (AWS), and start editing using the online editor, then you want to npm…

Problem: When I try to install a plugin at WordPress, I hit an error:

Problem: I encounter a weird problem in WordPress, where the homepage is able to load properly, but all the pages are failing to load. An…

Problem: I set up a WordPress blog at 2 Amazon Web Service (AWS) EC2 instances at different availability zone. In front of them, a elastic…

Problem: When you start a new Amazon Linux 2 AMI server, and try to install php via command:

I 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…

In this article, I am going to explain how to migrate your WordPress local MySQL database to Amazon Web Service (AWS) Relational Database…

If 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…

I 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…

Problem: Sometimes when you start a local node.js server, it may be stuck running at the background. When you try to start the server…

I 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…

In Adobe Experience Manager (AEM), a Sling servlet can be used for handling some RESTful request-responses ajax call. It is written in…

I want more privacy, so I decided to minimize the use of Google products. I can replace Chrome with Firefox, replace Gmail with ProtonMail…

In javascript, you can console.log(‘whatever”) in your browser for troubleshooting. However, in php code, a little bit trick is required…

I 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…

I’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:

Ghost 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…

It’s painful to work behind a corporate network and everything does not work out of the box. Simple command like npm install would not…

The key personal learning from the Germany trip is anti-fragile. Travelling involves many uncertainty and randomness. Despite my flight…

In 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 is designed to bring greater transparency and investor protection to the financial markets. It introduces more protection for all…

An undergraduate student asked me how to get real-time data from a website into an excel. The data is used for his homework assignment…

I 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…

Yesterday I was working at a client site. It is a Windows server isolated from the external network. It is not allowed to install any…

Yesterday I was working at a client site. It is a Windows server isolated from external internet access and prohibited to install any new…

In retrospective, my Chile trip was amazing. Despite it was tough to fly over 30 hours from Hong Kong and suffering from jet lag, the…

I 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…

I 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 means consciously working with the higher level manager to obtain the best possible results for you in the traditional…

The research found that six distinct leadership styles have a direct impact on the working atmosphere and financial results in terms of…

I’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…

In order to get people to follow your lead, the only way to succeed is by getting the people to motivate themselves. The common mistakes…

Charisma can be learned. We can practice acquiring the ability to inspire followers towards a clear vision and instil deep levels of trust…

Life is a series of decisions. From day to day business operations to critical decision for the future directions of a firm, managers are…

I am in a project running with scaled scrum using Nexus framework. Nexus means a relationship or connection between people, which is a unit…

This article is about the Internet Border Gateway Protocol (BGP). It is a standardised exterior gateway protocol to exchange routing and…

Let 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…

I 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…

It was challenging to work on an Internet of Thing (IoT) project for a Bluetooth smart device in the last year, which is different from…

I 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…

Once upon a time, my teacher taught me that Hong Kong is an international financial centre. Every day, we enjoy economic success with a…

A lot of friends ask me questions about the emerging of the Blockchain revolution. According to the recent news, four of the world’s…

I’m using Anaconda way to install the jupyter notebook.

RancherOS is a Linux distro for running Docker container. There is an AMI (Amazon Machine Images) in the marketplace, but it took me a…

I am deploying a Java Spring server using Docker. Here are the steps:

I am implementing a Java Spring Framework server which sends an Apple Push Notification to an iPhone using Swift. Here are the things you…

After 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…

I’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…

Fact 1:

I 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…

The 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…

I was setting up a project today using Webpack, React and Bootstrap without jQuery. This supposed to be a straight forward task but turns…

I’m a Software Engineer with a leading Australian technology company. I’m smart, skilful, hard-working… but these are not enough to be a…

Swift is very strongly typed. All variables have a type. There is a type in Swift called optional. Optional can have only two values:

When first open an objective-C project in X-code, the .h and .m files look confusing. It is important to understand the simple connections…

15 October 2015

Firstly, install homebrew, which is the missing package management tool for OS X:

My goal is to travel around the world! Yep, this is a bit too ambitious. One important principle I learnt from software engineering is how…

The Problem

24 August 2015

The problem I got:

One 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…

28 June 2015

Step 1: Change directory into your path that installed the ghost blog. For example, mine is:

The problem

The Problem

Aluum-dabbda! This is how to say “beautiful” in Korean. Same phrase could be used to describe the gorgeous environment in Busan, Gyeongju…

I am learning Java. One of the important concepts to understand is whether arguments of a function is passing by copy or reference.

Recorded at the Hong Kong JavaScript and Node.js meetup on 3 Mar 2015.

If 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 includes a command line tool, subl. However, it does not work out of the box after you install the editor in OS X Yosemite.

ECMAScript 6 is the next version of the JavaScript standard. Here are the 12 cool things you need to know about ES6:

I took the Hack Reactor remote beta at the second cohort in Hong Kong to improve my technical skills in JavaScript. It was well structured…

We all love beers. And today, we face an unprecedented variety of options. We are overwhelmed by too many choices and couldn’t decide..

It 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 …

92% of New Year’s resolutions fail. Why? This sounds like an fascinating problem waiting to be solved.

When 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.

I am working on a project using BreweryDB. I was trying to load some data from the API, but they don’t support jsonp.

I 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..

In this blog post, we are going to walk through a couple error messages to install dependencies for Android platform of Ionic framework…

I was setting up continuous integration using CircleCI with karma test for Angular on Heroku. The test was working on local host, but…

NOTE: This tutorial is using Meteor 1.1.3 with cfs:standard-pacage 0.0.2 (15th December, 2014). Since this feature is under active…

I was invited by General Assembly (GA) Hong Kong to talk about my experience in the Web Development Immersive (WDI) course.

I 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.

Why do arrays not compare the way other values do? Because typeof array is an object.

I use Sublime text 3 everyday, especially the JavaScript autocomplete feature.

In this tutorial, I am going to show you how to write a simple chat application using MeteorJS.

Sydney or Melbourne? This is a childish rivalry between the two cities. I always think it’s like comparing apples to oranges.

The status is complicated. I love you. Cause you are amazing, just the way you are.

You 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…

Visit Brisbane is fun. Friendly people. Beautiful environment. Also, it is less expensive than Sydney and Melbourne for price sensitive…