Rust Tutorial

Rust #[must_use] attribute explained: put it on structs, functions, or traits to force callers to handle critical return values. Compile-time warnings prevent transactions and payments from being silently dropped.

Rust enums are far more than a set of constants. They carry data, drive state machines, replace null, and unify error handling. This guide walks you from basics to recursive enums with real code examples.

Rust 1.93 is out with all musl targets upgraded to 1.2.5, #[cfg] conditional compilation in assembly, global allocators can now use TLS, and zero-copy APIs stabilized.