Ruby

What is Fiber in Ruby?

What is the conceptual difference between an array and a hash?

Which is cheaper: sorting an array and then searching, or using a linear search for an element?

What are multi-stage builds?

What is network looping?

What is eager loading in the context of Ruby on Rails?

Is it possible to implement the same functionality with a class as in a module?

What are green threads?

What is GVL (Global VM Lock) in Ruby?

What do square brackets in a hash signify?

What is a hash function?

What is faster: a block, a process, or a lambda?

What does the join method do in the Thread class in Ruby?

What is the difference between Joins and Includes in Ruby on Rails?

Where do you draw the line between front-end and back-end development?

Describe in detail the processes that occur after opening a browser.

What is a class in Ruby?

What is an HTTP request?

What are curly braces in the Ruby programming language?

Name a programming language that has no classes.