Functional Rust - An Exploration
summary
Rust code shows immutability by default with opt-in mutability and constants requiring type annotations, demonstrates closures that capture environment and type-inferred anonymous functions, and proves iterator power with concrete examples: fold summing 1..4 to 10 and a custom Counter struct implementing Iterator that yields numbers up to 5 then filters to produce [2,4]. The claim of zero-cost abstractions appears repeatedly and the compiler-enforced expression vs statement rules (semicolon) materially affect function returns.
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chapters (14)
- 0:00$ whoami
- 1:08Rust is
- 2:50Two reasons
- 5:05Disclaimer
- 9:25Immutability pt2
- 13:42What does a fn return?
- 14:48Statements vs Expressions pt2
- 15:49Generic Types and Traits
- 17:14Enums and Pattern matching
- 20:33Higher Order Functions
- 22:43Closures
- 26:16Iterators pt2
- 29:46Implementing the Iterator trait pt3
- 33:14Checklist
