Asterinas: OS kernel written in Rust and providing Linux-compatible ABI

Re:Asterinas: OS kernel written in Rust and providing Linux-... by oniony on Wednesday October 16, 2024 @10:45AM (#41859658)

Result is whether an operation returned an error or not. Option is whether you have a value or no value.

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Re:Asterinas: OS kernel written in Rust and providing Linux-... by thesuperbigfrog on Wednesday October 16, 2024 @11:31AM (#41860266)

Exactly.

That is why a query that successfully returns no items can be represented as Ok(None).

A successful query with items returned would instead be Ok(Vec<Item>).

An error in the completing the query (for example, problem with the database), would be Err(DatabaseError) or Err(SomeOtherError).

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