The Freedom of Static Typing
summary
Rust shows concrete wins: algebraic enums let code express exclusivity so a value is either variant A or B not both; Option/Result plus the or_else method lets chained fallbacks run only on error; the crates itertools and serde enable real extensions and zero-boiler deserialization into app types; return-type polymorphism makes one method serve boolean, Option, or collection callers; a few language experiments prove useful while others produce confusing errors and get rolled back.
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