Can you elaborate? If you remove the braces, you break one of Rust's most import... | Hacker News

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		fluffything on April 2, 2020 \| parent \| context \| favorite \| on: State Machines in Rust Can you elaborate? If you remove the braces, you break one of Rust's most important language features, an LL(2) grammar. That is, those braces give Rust an LL(2) grammar, and therefore, are not redundant. If you know how to preserve the LL(2) grammar in Rust while removing those braces, please explain why, since the answer would revolutionize many fields of computer science.

jfkebwjsbx on April 2, 2020 [–]

The braces are redundant because they do not introduce any new information, which is the definition of being redundant.

Whether the resulting grammar is or not LL(2) is orthogonal.

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