Tag: Validation

Practical Intro to Monads in JavaScript: Validation

Few weeks ago I published a practical Intro to Monads in JavaScript where I covered basics of Identity and Maybe monads. Some time later I added a tutorial on Either monad and fails-fast error handling. This time I will show you error accumulation in a simple Validation use case.


Practical Intro to Monads in JavaScript

If you’ve heard about Monads but never had time learn them, here’s a simple explanation. Not a theoretical nonsense. It’s a simple, practical tutorial for JavaScript developers showing how some monads can be used. It’s for engineers, not scientists.