#readwise # Applicative Validation ![rw-book-cover](https://blog.ploeh.dk/assets/themes/ploeh/images/favicons/favicon.png) ## Metadata - Author: [[Mark Seemann]] - Full Title: Applicative Validation - URL: https://blog.ploeh.dk/2018/11/05/applicative-validation/ ## Highlights - Validation may be the poster child of applicative functors, but it *is* a convenient way to solve the problem. ... In order to collect all errors, instead of immediately short-circuiting on the first error, you have to deviate from the standard `Either` implementation of `<*>`.