Abstraction and encapsulation

Encapsulation picks up where abstraction leaves off. Abstraction says, “You’re allowed to look at an object at a high level of detail.” Encapsulation says, “Furthermore, you aren’t allowed to look at an object at any other level of detail.”
 — Code Complete

Exceptions

1. If it’s a command, do not return a result, just throw an exception in case of fail (also related to CQRS cause you can not say if command succeed by returning value)
2. An exception suppose to be custom and detailed, don’t use basic exceptions, it make it harder to debug

Front Controller pattern

When you do OOP — you suppose to extract classes sometimes as well. This article will describe one of the cases.

GIVEN
Once I needed to implement redirect to some URL with some condition.

Why is this code written?

When we’re looking at code — we can see how it works, we can see that data comes inside, how is it being processed and how returned.

But often nobody can say why someone wrote this code.

The biggest problem in the programming

The main problem in programming nowadays is code coupling.

Every pattern and practice is dedicated to reduce this coupling.

• TDD allows you write minimally coupled code from very beginning, which is the most…

Single-task concentration in Scrum team

Concentration is considered crucial for developers.

Also concentration on single task considered a good practice, because that’s how you can maintain the concentration.

Removing dependencies on internal language functions

Currently I’m working on library which is going to read, modify and write IPTC tags for images.

It means I’m working with file-system and image functions integrated in the language. They work with real FS objects…

Extracting redirects from Controller

Not a new that controller suppose to be slim and have no business logic.

OK, fair enough.

But currently in the project I’m working on, I see a lot of redirects inside of Controllers. They pollute code and make…

Taking ownership

A lot of books/articles say about taking ownership.

The boy-scout rule says about leaving the place cleaner than it used to be.

But what is the scope of ownership? If I am changing a method in a class, am I responsible for all the class? How cam…