About the Author

Federico Kereki is a Uruguayan Systems Engineer, with a Masters Degree in Education, and more than thirty years' experience as a consultant, system developer, university professor, and writer.He is currently a Subject Matter Expert at Globant, where he gets to use a good mixture of development frameworks, programming tools, and operating systems, such as JavaScript, Node.JS, React and Redux, SOA, Containers, and PHP, with both Windows and Linux.He has taught several computer science courses at Universidad de la República, Universidad ORT Uruguay, and Universidad de la Empresa, he has also written texts for these courses.He has written several articles-on JavaScript, web development, and open source topics-for magazines such as Linux Journal and LinuxPro Magazine in the United States, Linux+ and Mundo Linux in Europe, and for web sites such as Linux and IBM Developer Works. He also wrote booklets on computer security ("Linux in the Time of Malware" and "SSH: A Modern Lock for your Server") and a book ("Essential GWT: Building for the Web with Google Web Toolkit") on GWT programming.Kereki has given talks on Functional Programming with JavaScript in public conferences (such as JSCONF 2016) and has used these techniques to develop Internet systems for businesses in Uruguay and abroad.His current interests tend toward software quality and software engineering- with Agile Methodologies topmost-while on the practical side he works with diverse languages, tools, and frameworks, and Open Source Software (FLOSS) wherever possible!He usually resides, works, and teaches in Uruguay, but he is currently on a project in India, and he wrote this book in that country.Table of ContentsBecoming Functional - Several QuestionsThinking Functionally - A First ExampleStarting Out with Functions - A Core ConceptBehaving Properly - Pure FunctionsProgramming Declaratively - A Better StyleProducing Functions - Higher-Order FunctionsTransforming Functions - Currying and Partial ApplicationConnecting Functions - Pipelining and CompositionDesigning Functions - RecursionEnsuring Purity - ImmutabilityImplementing Design Patterns - The Functional WayBuilding Better Containers - Functional Data Types

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