Functional Programming Patterns in Scala and Clojure (for Lorinda Hartzler) by Michael Bevilacqua-Linn

Author:Michael Bevilacqua-Linn
Language: eng
Format: epub, mobi
Tags: Pragmatic Bookshelf
ISBN: 978-1-937785-47-5
Publisher: The Pragmatic Bookshelf, LLC (448677)

​ ​def​ subtract(a: ​Int​, b: ​Int​) = a - b

​ ​def​ multiply(a: ​Int​, b: ​Int​) = a * b

​ ​def​ divide(a: ​Int​, b: ​Int​) = a / b

To wrap our calculator functions in logging code, we use ​makeLogger​ . This is a higher-order function that takes in a calculator function and returns a new function that runs the original calculator function and prints the result to the console before returning it.

ScalaExamples/src/main/scala/com/mblinn/mbfpp/oo/decorator/Examples.scala

​ ​def​ makeLogger(calcFn: (​Int​, ​Int​) => ​Int​) =

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