feat(models): add MemoHandle for user-controlled memoization #71
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Add MemoHandle, a memoization table for explicit caching of expensive MeTTa computations. Features: - O(1) lookup for previously evaluated expressions using hash keys - Optional LRU eviction with configurable max size - Thread-safe via RwLock for concurrent access - Hit/miss statistics tracking for performance analysis - Clear and stats retrieval methods MemoHandle will be used by the `memo` special form to cache evaluation results, providing significant speedups for repeated computations. Includes tests for basic operations, LRU eviction, and hit rate tracking. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
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Summary
Add memoization and binding models:
Part of Stacked PR Series
This is PR #7 in a 28-PR stacked series implementing the bytecode VM and JIT compiler.
Base:
pr06/metta-value-helpersNext:
pr08/bytecode-caches-registriesThis PR series implements tiered compilation: tree-walker → bytecode VM → JIT native code