RBS is a language to describe the structure of Ruby programs. You can write down the definition of a class or module: methods defined in the class, instance variables and their types, and inheritance/mix-in relations. It also allows declaring constants and global variables.
https://dry-rb.org/gems/dry-monads/1.6/
dry-monads is a set of common monads for Ruby. Monads provide an elegant way of handling errors, exceptions and chaining functions so that the code is much more understandable and has all the error handling, without all the ifs and elses. The gem was inspired by the Kleisli gem.
What is a monad, anyway? Simply, a monoid in the category of endofunctors. The term comes from category theory and some believe monads are tough to understand or explain. It’s hard to say why people think so because you certainly don’t need to know category theory for using them, just like you don’t need it for, say, using functions.
Moreover, the best way to develop intuition about monads is looking at examples rather than learning theories.
dry-rb is a collection of next-generation Ruby libraries, each intended to encapsulate a common task
https://blog.logrocket.com/10-best-tailwind-css-component-libraries/