Learn Functional Programming in Kotlin in this intensive online course brought to you by 47 Degrees Academy and led by Jorge Castillo.

# Functional Programming Fundamentals in Kotlin with Arrow

In this intensive course, we’ll cover Functional Programming essentials in Kotlin over four days / 16-hrs. By the end of this course, you will have a solid grasp on the course concepts.

### Course Dates:

• Thursday, December 10th
• Friday, December 11th
• Monday, December 14th
• Tuesday, December 15th

#### Course content

##### Lesson 1: Functional Programming

Functional programming essentials.​

• Fundamentals of FP. What is it, what is it good for.
• Purity, referential transparency, substitution model.
• Side effects.
• Higher order functions.
##### Lesson 2: Domain Modeling and ADTs

Modeling your program’s data through the concept of Algebraic Data Types.

• Kotlin type system and its impact on how compiler understands code.
• Algebraic Data Types.
• Modeling program choices by ADTs.
• The Nothing bottom type and inference.
• Kotlin standard library product types.
• Arrow product and sum types.
• Arrow Coproducts.
##### Lesson 3: Immutable Data and Optics

How to optimize reusability and composition for immutable data structures using Optics.

• Understanding optics as a path for reading / modification.
• How optics improve Kotlin standard library copy syntax.
• Going over all the available types of optics.
• Optics composition and reusability.
##### Lesson 4: Error-Handling and Data Validation​

Learning how to handle errors in our programs.

• Option datatype.
• Either datatype.
• Computational bias: Having a happy path in our types.
• Fail fast vs error accumulation strategies.
• ValidatedNel as a mean to accumulate errors.
• How to handle errors on concurrent contexts? 👇
##### Lesson 5: Diving into Suspend
• `suspend` from Kotlin stdlib, what it represents, how it works.
• What does `suspend` translate to at compile time (CPS).
• How we leverage that with Arrow Fx Coroutines.
• The power of delimited continuations, “the mother of all monads”.
• Equivalence between wrapped approaches and Kotlin suspend.
• Removing the need for IO wrappers.
• `suspend` as a mean to track side effects at compile time.
##### Lesson 6: Arrow Fx Coroutines
• A pure functional implementation of Kotlin `suspend` system.
• Handling errors in concurrent contexts by leveraging `suspend` + `Either`.
• Concurrency solved by Arrow Fx Coroutines operators.
• Collaborative cancellation checked by all operators.
• Cancellable effects.
• Evaluating effects on arbitrary contexts.
• Fibers as lightweight threads: ForkAndForget / ForkConnected / ForkScoped.
• Concurrent resource safety.
• Handling concurrent mutable state.
• parallelization operators.
• Traversing effects.
• Racing effects.
• Reusable and highly composable retry & repeat strategies.
• Resource
• Bracket
##### Lesson 8: Functional Streams
• Lightweight streams.
• Pull based - key differences vs other known streaming libraries.
• Built-in backpressure.
• Chunk based streams.
• Embedded effects.
• Stream interruption.
• Queues.
• Lightweight stream apis.
• Safely streaming resources with automatic scoping.

• \$1100
• -50%

Enroll for \$550Starts on December 10 at 09:00 - 13:00 CET

Company and Private Group Training

• 4 Days
• Instructor-Led Course
• Beginner
• Online
• I would like to apply for financial aid.

### Trainers

Jorge Castillo

Senior Software Engineer

### Skills

• Kotlin
• Functional Programming Essentials
• Type classes
• Error Handling
• Output

### This Instructor-Led Course includes:

• Maximum Class Size of 15
• Certificate of Completion

### Requirements:

• One year of experience using Kotlin or similar Functional Programming-oriented languages

Is this course 100% online?

Yes

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