Functional Programming in Kotlin – Hadi Hariri

Learn the principles of functional programming in Kotlin, including immutability, higher-order functions, lambda functions, and more, and discover how to write more expressive and concise code with Kotlin's standard library and extension functions.

Key takeaways

Immutability is a key concept in Kotlin, and it’s recommended to use val instead of var to create immutable values.
Functional programming is a style of programming that emphasizes the use of pure functions, immutability, and the avoidance of side effects.
In Kotlin, you can create higher-order functions, which are functions that take other functions as arguments or return functions as output.
Extension functions allow you to add functionality to existing types, whereas higher-order functions allow you to compose functions together.
Lambda functions are small anonymous functions that can be used to simplify code.
Currying is a technique that involves breaking down a function into smaller functions that take one argument at a time.
Partial function application allows you to create functions that can be used with different arguments.
Memoization is a technique that involves caching the results of expensive function calls to improve performance.
Inlining functions can improve performance, but it’s not always necessary.
Kotlin has a standard library that includes functions for common tasks, such as filtering and mapping collections.
DSLs (Domain Specific Languages) can be created using Kotlin’s standard library and extension functions.
Functional programming can be used to create more expressive and concise code, but it may require a different mindset and approach to programming.

Functional Programming in Kotlin – Hadi Hariri

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