The Magic Function: Crafting Elegant Abstractions in Rust
2025-01-06
This excerpt from "The Secrets of Rust: Tools" by John Arundel demonstrates elegant abstraction design in Rust using a simple line-counting command-line tool. The 'magic function' approach is employed: first imagining an ideal function, then designing its API based on how it's called, resulting in a clean, reusable library. A unit test ensures correctness, highlighting the importance of API design prioritizing user needs over implementation details.
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