// Copyright © 2018 Inanc Gumus // Learn Go Programming Course // License: https://creativecommons.org/licenses/by-nc-sa/4.0/ // // For more tutorials : https://learngoprogramming.com // In-person training : https://www.linkedin.com/in/inancgumus/ // Follow me on twitter: https://twitter.com/inancgumus package pipe // DomainGrouper groups the records by domain. // It keeps the other fields intact. // For example: It returns the page field as well. // Exercise: Write a solution that removes the unnecessary data. func DomainGrouper(r Record) string { return r.domain } // Page groups records by page. func Page(r Record) string { return r.domain + r.page }