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OOP Concepts Medium technical

Q1. What does the Single Responsibility Principle actually mean?

The Single Responsibility Principle states that a class should have one reason to change, meaning it should serve one actor or concern. It is about change, not size: a sm...

1 Answer

Software Testing & QA Hard technical

Q2. How do you add tests to legacy code that has none?

Legacy code is often defined as code without tests, which makes changing it risky. The core technique is to introduce a seam, a place where behaviour can be substituted w...

0 Answer

OOP Concepts Hard system-design

Q3. How would you refactor a god class into a maintainable design?

A god class is large, does many unrelated things, has many dependencies and is touched by most changes. Treat the refactor as a series of safe, behaviour-preserving steps...

0 Answer