The First Cry of Atom

ActiveRecord in Rails provides a way called scope to keep the readability along with encapsulating the detail of the business logic in the model class. It enables us to add a more intuitive interface to the model so that we can quickly call the scoped method without caring about the... [Read More]

When you get a chance to learn a new programming language or framework, you might encounter the exercise to develop a TODO app. The reason behind this kind of exercise is that the TODO app generally covers all functionality most web/mobile app needs, such as user identity management, data persistence,... [Read More]

We might have the experience to remove the white space in the string recorded in PostgreSQL. There is a function TRIM, but it only removes the white space on the left/right side of the string. How can we do that when we want to omit the whitespace in the middle... [Read More]

Visualization often provides us a vivid image to grasp the situation at a glance. It is one of the recommended ways as a starting point of more in-depth understanding and investigation in general. [Read More]

The epicenter of the outbreak of COVID-19 moves to Europe in these weeks. The situation is still highly unpredictable. We need to manage to keep away from the threat of the COVID-19. Washing hands properly and staying away from the crowded area is our duty to stop the spread of... [Read More]