{"paper":{"title":"Escape with Your Self: Sound and Expressive Bidirectional Typing with Avoidance for Reachability Types","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.PL","authors_text":"Guannan Wei, Siyuan He, Songlin Jia, Tiark Rompf, Yuyan Bao","submitted_at":"2024-04-12T03:03:00Z","abstract_excerpt":"Reasoning about programs in the presence of mutation and aliasing is notoriously difficult. Rust has popularized lifetime-based ownership tracking in systems programming, but its \"shared XOR mutable\" model is fundamentally at odds with higher-level functional programming. Reachability types offer an alternative: they enable safe sharing and escape of mutable data by tracking which resources each expression's result can reach.\n  To track internal reachability within complex object graphs, reachability types adopt self-references that let components refer to enclosing resources from inside, just"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08217","kind":"arxiv","version":6},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.08217/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}