Self and Scope Toolbox
A good grasp of how the self and scope changes is helpful to become good at Ruby. The table below summarizes how they change.
| Self | Scope | Tool |
|---|---|---|
| Changes | No Change | instance_eval, class_eval |
| Changes | Changes | class, def, module |
| No Change | No Change | block, Class.new, Module.new, define_method |
| No Change | Changes | Recursion, Top level method |
We have discussed most of the tools in this book.
As you continue your learning, you now have a way to put the tools into the appropriate slot. This helps you to choose the right tool for a given situation.