iluwatar#1842 Improving documentation and README

Author: hkattt

currying/README.md

@@ -6,16 +6,16 @@ permalink: /patterns/currying/
 categories: Functional
 language: en
 tags: 
- - FIGURE OUT WHAT TAG
+ - Decoupling
 ---
 
 ## Name / classification
 Currying
 
 ## Intent
 Currying decomposes a function that takes multiple arguments into a sequence of functions that each take a single argument. 
-The parameters of a curried function can be initialised to create a new function with lower arity to perform a more specialised 
-task. 
+Curried functions are useful since they can be used to create new functions with lower arity to perform more specialised tasks
+in a concise and readable manner. This is done via partial application.
 
 ## Explanation
 Real-world example

currying/src/main/java/com/iluwatar/currying/Book.java

@@ -71,7 +71,7 @@ public String toString() {
   }
 
   /**
-   * Curried unary book create functions.
+   * Curried book builder/creator function.
    */
   static Function<Genre, Function<String, Function<String, Function<LocalDate, Book>>>> BOOK_CREATOR
       = genre