[tester756]

Senior doesn't need to learn about loops, ifs and so on

For example when learning C++ while being proficient at C# I found useful this blog: https://www.jacksondunstan.com/articles/5530

"C++ For C# Developers: Part 1 – Introduction"

Author compares features between C# and C++ and shows what is similar, the same, different, non-existent, etc.

[ecuaflo]

These things are taught in the first semester of a CS degree and part of the interview process for an entry-level position.

[tester756]

What "these things"?

Differences between languages?