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Open/Closed Principle (OCP) Explained: SOLID with Examples
The Open/Closed Principle states: Software entities should be open for extension, but closed for modification.
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Explore foundational engineering pillars
The Open/Closed Principle states: Software entities should be open for extension, but closed for modification.
In this article, we'll focus on the first principle: Single Responsibility Principle. The Single Responsibility Principle is commonly expressed as: A class should have one, and only one, reason to change.
SOLID is an acronym that represents five software design principles. These principles are mainly associated with object-oriented programming (OOP), where we organize applications using classes and objects.
Imagine opening a newspaper where every article, headline, and paragraph is printed in the same font size, without any clear separation. Finding the information you're interested in would be quite difficult, wouldn't it?
Have you ever wondered why almost every HTML document begins with the following line?
Imagine you're learning HTML for the first time. You open a text editor, write your first HTML document, and save it as index.html.
A good place to start, chosen from the published archive.
Follow connected lessons through a topic, one idea at a time.
# Learn by building understanding
01 Choose a series that sparks your curiosity.
02 Read each lesson at your own pace.
03 Carry the ideas into your next project.
A guided route through related articles.