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Documentation Index

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What this means

assignment conflicts with borrow checker guarantees

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Metadata

  • Code: E4009
  • Default level: Error
  • Phase: Borrow Check
  • Canonical docs URL: https://docs.brim-lang.com/diagnostics/E4009
  • Tags: borrow, assign

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How to fix

  • release borrows
  • use Cell/RefCell patterns

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Typical output

E4009: cannot assign through frozen borrow
note: assignment conflicts with borrow checker guarantees