Here's a weird idea for you. Imagine you could overload the semicolon in C-like languages; you could make it any function you want! This is a little bit of the idea behind monads. You can build a pipeline of chained functions and the monad you choose can make decisions in between stages. One simple example of such a decision is an early return/exit; this use case is covered by the Maybe monad.
Another cool one is the continuation monad. This lets you stop a pipeline and return a partial result, along with a function that lets you resume where you left off. This approach is commonly used in parsing, where you want to stop and restart depending on the availability of input. Another use for the continuation monad is to transform a chain of nested callbacks into linear code, eliminating callback hell.
Another cool one is the continuation monad. This lets you stop a pipeline and return a partial result, along with a function that lets you resume where you left off. This approach is commonly used in parsing, where you want to stop and restart depending on the availability of input. Another use for the continuation monad is to transform a chain of nested callbacks into linear code, eliminating callback hell.