Functional Programming Concepts

The paradigm OOP's own domain doesn't cover — pure functions, immutability, and composition as the alternative to classes and inheritance, plus the ideas (Option/Result types, monads, map/filter/reduce) that already show up constantly in ordinary Python and JavaScript code, explained as what they actually are.

20 lessons

Study 41 cards for this domain

Beginner

Intermediate

Function composition: building complex behavior from small, simple piecesIntermediate3 min read·Not started Currying and partial application: pre-filling some of a function's argumentsIntermediate2 min read·Not started Recursion over iteration, and why Python and JavaScript mostly don't optimize itIntermediate3 min read·Not started Referential transparency: the property that makes memoization actually safeIntermediate3 min read·Not started Lazy evaluation: computing a value only when, and if, it's actually neededIntermediate3 min read·Not started

Advanced

Algebraic data types: Option and Result as alternatives to null and exceptionsAdvanced3 min read·Not started The Functor pattern: transforming a value without unwrapping its containerAdvanced3 min read·Not started Monads, demystified: chaining operations that might fail, be absent, or be asyncAdvanced3 min read·Not started Where these ideas already live in your everyday code, named at lastAdvanced3 min read·Not started