Trevor BrownandClaude Opus 5.5 153fa08d07 M4: reopen_loops looks up each closing segment's chain in a map (#1951) ...

Checking a loop's closing segment against every closing already accepted was quadratic in the
number of open loops. A map from closing segment to the chain that took it first answers it in
one lookup; behaviour is unchanged. A test closes 50 independent chains through their own
segments.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Model-Effort: Opus 5.5 drove and wrote

2026-11-11 04:38:33 -05:00

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src

M4: reopen_loops looks up each closing segment's chain in a map (#1951)

2026-11-11 04:38:33 -05:00

tests/it

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Cargo.toml

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clippy.toml

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