Introduction to Functional Programming

Treehouse

Course Summary

Functional Programming is an old paradigm, but one that is relatively new to Java world. In this course we will explore how to take advantage of the power that comes with thinking declaratively.

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Course Description
About this Course Functional Programming is an old paradigm, but one that is relatively new to Java world. In this course we will explore how to take advantage of the power that comes with thinking declaratively. What you'll learn
- Imperative vs. Declarative Syntax
- Lambdas & Method References
- Streams
- Functional Programming concepts
- Higher Order Functions and Closures
About the Teacher
I am a developer / mentor seeking to make this world better than it was yesterday. I am a proud father. You can find me around Internettown as craigsdennis.

Course Description

About this Course Functional Programming is an old paradigm, but one that is relatively new to Java world. In this course we will explore how to take advantage of the power that comes with thinking declaratively. What you'll learn

Imperative vs. Declarative Syntax
Lambdas & Method References
Streams
Functional Programming concepts
Higher Order Functions and Closures

About the Teacher
I am a developer / mentor seeking to make this world better than it was yesterday. I am a proud father. You can find me around Internettown as craigsdennis.

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Course Syllabus
Java's Functional Toolset
Java 8 introduced new Functional Programming capabilities. Let's explore them! 13 steps
- Introduction 5:08
- Why Now? 4:56
- Imperative vs. Declarative 7:47
- Imperative vs. Declarative 3 questions
- A More Functional Loop 5:46
- Lambdas 5:36
- Using forEach 5 minutes
- Method References 5:21
- Using method references 5 minutes
- Function Shapes 9:31
- Supplier and Consumer 2 questions
- Function Shapes - Function and Predicate 4:36
- Function Shape Review 4 questions
Meet Streams
Let's explore the Streams API which provides powerful declarative ways to process sequences of elements. 10 steps
- Understanding Streams 4:56
- Setting Up the Project 2:33
- Filtering 9:36
- Filtering High Scores 10 minutes
- Collecting and Limiting 11:16
- Collecting 3 NES Scores 10 minutes
- Transforming With Map 9:29
- Mapping Player's Names 10 minutes
- flatMap 12:18
- Creating a Word Cloud 10 minutes
Reduction and Aggregation
Reduce, aggregate and use ranges! 7 steps
- Reduction Operations 7:25
- Reduce Housing Records 15 minutes
- Optionals 9:56
- Optional Quiz...Homonym Fail, it is Required 3 questions
- Ranges 6:11
- Using a Range to Produce a Menu 15 minutes
- Infinite Streams 4:29
Functional Programming Fundamentals
Now that you've had some hands on experience, let's review some of important functional programming concepts with broader strokes. 10 steps
- Pure Functions 4:06
- Side Effects 4:45
- Keeping Things Pure 3 questions
- Higher Order Functions 8:22
- Higher Order Function 2 questions
- Function Composition 8:36
- Compose Price Conversion Functions 20 minutes
- Closures 9:15
- Functionally Over 1:48
- Higher Order Function for Price Conversion 20 minutes