Guru on Rails

When I was a teenager, my dad used to call me 'Hollywood' because I wore sunglasses all the time, even at night. Cue song. - Michael Weatherly
Thu 01 Nov 2018

Problem Solving

I'm sitting here at Trung Nguyen coffeeshop in Vietnam near the Airport. I'm solving a problem for traversing tree. Some ideas just came up, I really want to write it down. We are totally wrong abo...

Wed 24 Oct 2018

Data Structures

You might know, algorithm almost needs data structure. Any data structure is born with at least one reason. What problems does it solve? Speaking of hash table, it's efficient for complex structure...

Tue 23 Oct 2018

Blockchain

Transactions move value from transaction inputs to transaction outputs. An input is a reference to a previous transaction's output, showing where the value is coming from. An output is a specific ...

Sat 20 Oct 2018

Problem Solving

Problem solving is the essential skill. So what is the good way to improve this skill? So many developers with good problem solving skill tell us that we need to train this one on daily basic. Howe...

Fri 19 Oct 2018

Security Blockchain

We use digital signature a lot nowaday. In order to understand the blockchain technology - it's more likely the design pattern, we have to understand the digital signature. How does it work? Which ...

Wed 17 Oct 2018

Javascript

In this article, I introduce some modern syntaxes of JavaScript. If you are backend developer, you need to know these things if you want to get into MERN Stack. Variable: let & const Read how t...

Wed 17 Oct 2018

MERN Stack Automated testing Javascript

If we are ruby on rails developer, it's pretty cool. Why did I say that? Because as we know, we use Rspec for testing for rails application. And now I'm going to introduce to you the same way of te...

Sun 14 Oct 2018

MERN Stack Javascript

Redis is a database which stores data in RAM so it's pretty fast. However, if server restarted, we will lose data. We use it in cases that we need the speed, storing the data structure in RAM inste...

Thu 11 Oct 2018

Software Architecture

We talk so much about programming. In an ecosystem, there are not only the source code but also the database. We have to admit that the data is very important. Almost the application we are program...

Wed 10 Oct 2018

MERN Stack Design Patterns Javascript

Learning a language programming is pretty simple. People think it's hard just because they don't really understand the "way of coding". We might find that we really understand all of syntaxes but w...

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