? propagates the error to the caller, which is why Rust functions rarely need explicit error branches.
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Snippets written in Rust
Filter and map fuse into a single pass; collect decides what comes out the other end.
Snippets written in Rust
? propagates the error to the caller, which is why Rust functions rarely need explicit error branches.
Filter and map fuse into a single pass; collect decides what comes out the other end.