Functional Programming Principles in Scala (Scala 2 version) from Coursera

Functional programming is becoming increasingly widespread in industry. This trend is driven by the adoption of Scala as the main programming language for many applications. Scala fuses functional and object-oriented programming in a practical package. It interoperates seamlessly with both Java and Javascript. Scala is the implementation language of many important frameworks, including Apache Spark, Kafka, and Akka. It provides the core infrastructure for sites such as Twitter, Tumblr and also Coursera.

In this course you will discover the elements of the functional programming style and learn how to apply them usefully in your daily programming tasks, such as modeling business domains or implementing business logic. You will also develop a solid foundation for reasoning about functional programs, by touching upon proofs of invariants and the tracing of execution symbolically.

The course is hands on; most units introduce short programs that serve as illustrations of important concepts and invite you to play with them, modifying and improving them. The course is complemented by a series programming projects as homework assignments.

Recommended background: You should have at least one year programming experience. Proficiency with Java or C# is ideal, but experience with other languages such as C/C++, Python, Javascript or Ruby is also sufficient. You should have some familiarity using the command line.

What's inside

Syllabus

Getting Started + Functions & Evaluation

Get up and running with Scala on your computer. Complete an example assignment to familiarize yourself with our unique way of submitting assignments. In this week, we'll learn the difference between functional imperative programming. We step through the basics of Scala; covering expressions, evaluation, conditionals, functions, and recursion

Higher Order Functions

This week, we'll learn about functions as first-class values, and higher order functions. We'll also learn about Scala's syntax and how it's formally defined. Finally, we'll learn about methods, classes, and data abstraction through the design of a data structure for rational numbers.

Data and Abstraction

This week, we'll cover traits, and we'll learn how to organize classes into hierarchies. We'll cover the hierarchy of standard Scala types, and see how to organize classes and traits into packages. Finally, we'll touch upon the different sorts of polymorphism in Scala.

Types and Pattern Matching

This week we'll learn about the relationship between functions and objects in Scala; functions *are* objects! We'll zoom in on Scala's type system, covering subtyping and generics, and moving on to more advanced aspects of Scala's type system like variance. Finally, we'll cover Scala's most widely used data structure, Lists, and one of Scala's most powerful tools, pattern matching.

Lists

This week we dive into Lists, the most commonly-used data structure in Scala.

Collections

After a deep-dive into Lists, this week we'll explore other data structures; vectors, maps, ranges, arrays, and more. We'll dive into Scala's powerful and flexible for-comprehensions for querying data.

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explores functional and object-oriented paradigms in a practical context

Taught by renowned Scala expert Martin Odersky, the inventor of the language

Develops a solid foundation in functional programming principles and techniques

Applies functional programming concepts to real-world scenarios, making the learning practical

Requires some prior programming experience, ideally with Java or C#

Involves hands-on projects and assignments to reinforce learning

Reviews summary

Knowledgeable scala foundations

Learners say this course offers a clear and accessible introduction to functional programming with Scala. Theories are well-balanced with practical applications, and the course is considered a valuable resource for understanding Scala's capabilities and exploring functional programming. Martin, the course's creator, is highly praised for his expertise and ability to teach complex topics effectively.

The course offers a clear and accessible introduction to functional programming.

""Functional Programming Principles in Scala" (Scala 2 version) is a remarkable course that deserves a resounding 5-star rating. It offers a clear and accessible introduction to functional programming, perfectly balancing theory and practice."

This course is a valuable resource for anyone looking to explore functional programming.

Theories are well-balanced with practical applications.

Martin is an excellent instructor who teaches complex topics effectively.

"The course gives a much deeper understanding than a basic course on Scala. It's from the Scala creator himself.Martin is the best"

"It was excellent learning experience! Since there are less learning materials and courses about functional programming, especially scala, compared to others, I could easily and beneficially improve my development skill through this course."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Functional Programming Principles in Scala (Scala 2 version) with these activities:

Review basic programming fundamentals

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Revisit essential programming concepts, such as data types, variables, and control flow, to strengthen your foundation and make learning more efficient.

Browse courses on Programming Fundamentals

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Go through online tutorials or documentation on programming fundamentals.
Solve practice problems on coding platforms to test your understanding.
Review your notes and textbooks from previous programming courses.

Read 'Scala for the Impatient'

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Gain a comprehensive foundation in Scala by reading 'Scala for the Impatient'. This book provides a thorough introduction to essential concepts, syntax, and best practices.

View Core Java, Volume I on Amazon

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Obtain a copy of 'Scala for the Impatient'.
Read through each chapter, taking notes and highlighting key concepts.
Solve the practice exercises provided in the book.

Practice solving Scala exercises

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Engage in regular practice by solving Scala exercises and challenges to reinforce your understanding of syntax, concepts, and problem-solving techniques.

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Find online resources or textbooks with Scala exercises.
Set aside dedicated time for practice and consistently solve exercises.
Review solutions and identify areas for improvement.

Five other activities

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Participate in Scala study groups

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Connect with fellow learners through study groups to discuss concepts, share knowledge, and collaborate on projects. This social learning environment can enhance your understanding and motivation.

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Join or create a study group with other Scala learners.
Regularly participate in group discussions and problem-solving sessions.
Share your knowledge and assist other members of the group.

Explore advanced Scala concepts

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Seek out in-depth tutorials and resources to dive deeper into advanced Scala topics, such as type systems, concurrency, and functional design patterns.

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Identify specific advanced Scala concepts you want to explore.
Search for reputable online tutorials or video courses on those topics.
Follow the tutorials, take notes, and try out the examples.

Develop a small Scala application

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Apply your Scala skills by building a functional Scala application. This hands-on project will solidify your understanding and provide a practical demonstration of your abilities.

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Brainstorm and choose a small application idea that aligns with the course concepts.
Design the application's architecture and functionality.
Implement the application using Scala and appropriate libraries.
Test and debug the application to ensure it meets the requirements.

Attend Scala workshops or conferences

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Immerse yourself in the Scala ecosystem by participating in workshops or conferences. These events provide opportunities to connect with experts, learn about cutting-edge advancements, and enhance your Scala knowledge.

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Research upcoming Scala workshops or conferences.
Register for an event that aligns with your interests and skill level.
Attend the event, actively participate in sessions, and network with other attendees.

Contribute to Scala open-source projects

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Immerse yourself in the Scala community by contributing to open-source projects. This practical experience will expose you to real-world Scala codebases, development practices, and collaborative teamwork.

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Identify Scala open-source projects that interest you.
Review the project's documentation and codebase.
Identify areas where you can contribute and submit pull requests.
Collaborate with project maintainers to improve the codebase.

Career center

Learners who complete Functional Programming Principles in Scala (Scala 2 version) will develop knowledge and skills that may be useful to these careers:

Software Engineer

Scala, the topic of this course, is a language used for many business applications, such as Apache Spark, Kafka, and Akka. It also provides the core infrastructure for sites including Twitter, Tumblr, and Coursera. This means that Software Engineers who learn Scala will become valuable to companies across industries. Additionally, Scala is considered to be in the top 10 programming languages, which will help any Software Engineer's resume stand out.

See salaries and explore the career path for Software Engineer

Data Analyst

Data Analysts work with structured data to find patterns and draw insights that help businesses. Scala is a popular programming language for working with data, so this course will teach learners the foundations of Scala so that they can solve real-world business problems.

See salaries and explore the career path for Data Analyst

Data Scientist

Functional programming is important to a Data Scientist. This course will teach learners to reason about functional programs, cover proofs of invariants, and the tracing of execution symbolically. Those are advanced topics that are relevant to professionals working with big data sets, especially those working with machine learning models.

See salaries and explore the career path for Data Scientist

Software Architect

Software Architects need to have a solid foundation in programming, including functional programming. This course will help them learn the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Software Architect

Backend Developer

Scala is a language used to build server-side applications, which is what Backend Developers work on. This course will teach the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Backend Developer

Web Developer

Scala can be used to build web applications, and this course will teach Web Developers its basics, such as expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Web Developer

Systems Analyst

Systems Analysts need to have a solid foundation in programming, and this course will teach them the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Systems Analyst

Database Administrator

Database Administrators need to have a solid foundation in programming, including functional programming. This course will help them learn the basics of Scala, which they can then use to work with databases.

See salaries and explore the career path for Database Administrator

Product Manager

Product Managers need to be able to understand the technical specifications of any software their team is working on. This course will help Product Managers build a solid foundation in Scala so that they can better understand the way that products' features are built.

See salaries and explore the career path for Product Manager

Computer Scientist

Computer Scientists need to have a strong foundation in programming, including functional programming. This course will help them learn the basics of Scala, which they can then use to work with databases.

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Information Security Analyst

Information Security Analysts need to have a strong foundation in programming, and this course will teach them the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

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Technical Writer

Technical Writers need to be able to understand the technical specifications of any software they are writing about. This course will help Technical Writers build a solid foundation in Scala so that they can better understand the way that software works.

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Mobile Developer

While Scala is not as commonly used for mobile development, it is still possible to build mobile apps with it. This course will teach the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion, which will give Mobile Developers a strong foundation in programming.

See salaries and explore the career path for Mobile Developer

Web Designer

While Web Designers do not typically need to know how to code, having a foundation in programming can be helpful. This course will teach Web Designers the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Web Designer

Graphic designer

While Graphic Designers do not typically need to know how to code, having a foundation in programming can be helpful. This course will teach Graphic Designers the basics of Scala, including expressions, evaluation, conditionals, functions, and recursion.

See salaries and explore the career path for Graphic designer