Functional Kotlin

Differences between the currying and partial application

There is some confusion between currying and partial application. Some authors treat them as synonymous, but they are different:

import arrow.syntax.function.curriedimport arrow.syntax.function.invokefun main(args: Array<String>) {   val strong: (String, String, String) -> String = { body, id, style -> "<strong id=\"$id\" style=\"$style\">$body</strong>" }   println(strong.curried()("Batman Begins")("trilogy1")("color:black")) // Curried   println(strong("The Dark Knight")("trilogy2")("color:black")) // Fake curried, just partial application   println(strong(p2 = "trilogy3")(p2 = "color:black")("The Dark Knight rises")) // partial application   }

The differences are significant and they can help ...