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⚡ Bolt: Optimize MaterialExtractor loop complexity and redundant string operations #84

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⚡ Bolt: Optimize MaterialExtractor loop complexity and redundant string operations #84

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3 changes: 3 additions & 0 deletions .jules/bolt.md
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## 2025-05-20 - Pre-compiling Regex in Loops
**Learning:** `re.findall(pattern, string)` recompiles (or retrieves from cache) the pattern on every call. In high-frequency functions called inside loops (like complexity estimation), this overhead adds up.
**Action:** Always pre-compile regexes (`re.compile`) into module-level or class-level constants if they are used repeatedly, especially in tight loops or recursive functions.
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Copilot AI Apr 23, 2026

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Falta una línea en blanco antes de este encabezado ## para mantener el formato consistente entre secciones en Markdown (mejora la legibilidad y evita que algunos renderizadores lo peguen al bloque anterior).

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**Action:** Always pre-compile regexes (`re.compile`) into module-level or class-level constants if they are used repeatedly, especially in tight loops or recursive functions.
**Action:** Always pre-compile regexes (`re.compile`) into module-level or class-level constants if they are used repeatedly, especially in tight loops or recursive functions.

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## 2025-05-24 - O(N*M) Loop to O(N) Dictionary Lookup Refactor
**Learning:** Nested loops (O(N*M)) for mapping relational data (like exercises to their solutions) can be a significant performance bottleneck. Refactoring to build a pre-computed dictionary (hash map) reduces the time complexity to O(N), yielding order-of-magnitude speedups for large data sets. However, when simulating the behavior of a `break` statement in the original loop, a naive dictionary comprehension will map the *last* matching item.
**Action:** When refactoring search loops with a `break` to dictionary lookups, populate the dictionary manually and check `if key not in dict:` to preserve the *first-match* behavior safely.
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