Chapter 7 - While You Are Coding

Question 1

Should we run auto-pilot when coding?

Answer 1

No. We should watch our thoughts carefully. We should be critical about our work.

Question 2

Should we program by coincidence?

Answer 2

No. We should avoid programming by coincidence - relying on luck and accidental successes - in favor of programming deliberately.

Question 3

What is the Big-O notation?

Answer 3

it is a mathematical way of dealing with approximations. It uses the worst case to determine how execution time will vary based on the input.

Question 4

What is refactoring?

Answer 4

It is a disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior.

Question 5

Why should we refactor?

Answer 5

We should refactor our code daily because we want a clean and easy-to-change codebase. In this way, we don’t reduce team productivity.

Question 6

When should we refactor?

Answer 6

We should refactor when we find code that is duplicated, unclear, coupled, or outdated.

Question 7

Why should we test our code?

Answer 7

We should write tests for our code because with them we:

• Make sure our code works as expected
• Document the expected behavior
• Write better, loosely-coupled code when thinking make it testable.

Question 8

What are the basics security principles?

Answer 8

1 - Minimize Attack Surface Area
2 - Principle of Least Privilege
3 - Security Defaults
4 - Encrypt Sensitive Data
5 - Maintain Security Updates