Kotlin Functional Programming: Lambdas, Higher-oder Functions, and Lambda Expressions

Functional programming in Kotlin enables writing concise and efficient code by using immutable data, pure functions, and function transformations. This course covers the core concepts of functional programming and its differences from OOP. You'll learn to use lambdas and higher-order functions to simplify operations, transform collections with map, filter, fold, and reduce, and optimize performance with sequences, memoization, and tail recursion. You'll also explore function composition, currying, inline functions, and control flow in lambdas. By the end, you'll be able to write modular, reusable, and expressive Kotlin code.

Codelab Objectives

In this codelab, you’ll explore:

  • Understand functional programming and its difference from OOP
  • Understand how lambdas work as function parameters
  • Use lambdas to simplify operations on collections
  • Transform collections with filter and map
  • Use fold and reduce to aggregate values in collections efficiently
  • Use all, any, count, and find for predicates
  • Optimize collection processing with sequences
  • Convert lambdas into functional interfaces with SAM constructors
  • Compose multiple functions to create reusable transformations
  • Apply currying and partial function application to simplify function calls
  • Implement function pipelines for structured data processing
  • Use memoization and lazy evaluation to optimize performance
  • Leverage tail recursion for optimizing recursive functions
  • Optimize performance with inline functions
  • Manage control flow in lambdas using labeled returns
  • Use anonymous functions for precise local returns

Codelab Content

Meet the instructor

Belal Khan

Content Author & Course Instructor

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