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⚡ Bolt: [performance improvement] Avoid intermediate Vector allocations in iterators and strings#45

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⚡ Bolt: [performance improvement] Avoid intermediate Vector allocations in iterators and strings#45
cloudesize67-cmd wants to merge 1 commit into
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bolt-rust-iterator-allocations-14029785356204805004

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@cloudesize67-cmd
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💡 What: Optimized string splitting and concatenation operations in xdk-build/src/python.rs and xdk-lib/src/casing.rs to avoid intermediate Vector allocations. Replaced string-based splits with character-based splits where applicable. Logged these specific learnings in .jules/bolt.md.
🎯 Why: Generating vectors and intermediate structures (like converting Vec<&str> back to .into_iter()) during high-frequency loop and formatting operations incurs unnecessary memory allocation overhead. Character-based splits are also faster than full-string pattern matching when matching single characters.
📊 Impact: Reduces memory footprint and heap allocations by directly producing the resulting String or chaining iterators instead of passing through an intermediate array/vector structure, making standard execution moderately faster, particularly in string casing scenarios.
🔬 Measurement: Verify via make check (formatting & clippy) and make test-generator. Tests continue to pass, showing identical functionality with less overhead.


PR created automatically by Jules for task 14029785356204805004 started by @cloudesize67-cmd

…ns in xdk-build and xdk-lib

- Replaced string `.split("\n")` with character `.split('\n')` in `xdk-build/src/python.rs`.
- Removed intermediate `.collect::<Vec<&str>>().into_iter()` on string split in `xdk-build/src/python.rs`.
- Replaced `.collect::<Vec<_>>().join("")` with `.collect::<String>()` for String concatenation in `xdk-lib/src/casing.rs`.

Co-authored-by: cloudesize67-cmd <237356855+cloudesize67-cmd@users.noreply.github.com>
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