Tag: fail fast error handling

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.

Read more...

Practical Intro to Monads in JavaScript: Either

My simple and practical Intro to Monads in JS, where I covered basics of Identity and Maybe monads, seemed to be helpful for a lot of folks, so I’ve decide to continue the topic. Now it’s time for Either – a tool for fast-failing, synchronous computation chains. A tool that may increase readability and quality of code while reducing error proneness. The best part is that we can still ignore the category theory!

Read more...