Introduction to
Functional
Programming
(Video Course)

Introduction to Functional Programming (video course)
Contents and Outline
A Look at Java/OOP Code and Data Types
Is Java/OOP Code That Simple? (stats)
Immutable Things
Pure Functions
Pure Functions Cannot Lie
Pure Functions: One Place The Side Door Is Okay
Expression-Oriented Programming
What is Functional Programming?
Solving Problems With Pure Functions, Types, And EOP
App 1: Implementing The Word Count App (Part 1)
App 1: Implementing The Word Count App (Part 2)
App 1: Implementing The Word Count App (Part 3)
One More Thing: Algebraic Substitution
A Quick Look at Parallel Programming
Recap: Java/OOP vs Pure Functions
A Change To The wc Application
Functional Error Handling (FEH)
FEH: Option
FEH: Try
FEH: Either
FEH: allCatch
Implementing wc with Try
Recap, and What’s Next
App 2: To-Do List (TDL)
App 2: The Database Class
App 2: insert Database Function
App 2: selectAll Database Function
App 2: delete Database Function
JIT: Understanding Errors in for-Expressions
App 2: Prompt the User
App 2: Read User Input
App 2: Show Help Text
JIT: Using Option and Try in for-Expressions
JIT: for Loops, Generators, and Guards
JIT: Code Blocks (Closures)
JIT: Recursion
App 2: Handling User Input
App 2: InputProcessor Class
App 2: Implementing handleUserInput
App 2: Handling Quit
App 2: Handling Help
App 2: Handling View
App 2: Handling Add
App 2: Handling Delete
App 2: Handling the Default Catch-All Case
App 2: Lessons Learned
App 2: Using Either Instead of Try
How Either Relates to ZIO
JIT: What’s an IO?
JIT: IO and Algebraic Substitution
JIT: IO, Option, Try, Either, and for-Expressions
ZIO and the Power of IOs (Part 1)
ZIO and the Power of IOs (Part 2)
Bonus: The Mindset of a Functional Programmer
Bonus: The M Word

App 2: InputProcessor Class

FOO

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