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⚡ Bolt: [performance improvement] Optimize string and iterator allocations#55

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bolt-iterator-optimizations-7320209209507359780
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⚡ Bolt: [performance improvement] Optimize string and iterator allocations#55
cloudesize67-cmd wants to merge 1 commit into
mainfrom
bolt-iterator-optimizations-7320209209507359780

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@cloudesize67-cmd
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💡 What

  • In xdk-lib/src/casing.rs, replaced .collect::<Vec<_>>().join("") with .collect::<String>() when converting Pascal case.
  • In xdk-build/src/python.rs, replaced string .split("\n") and .split(" ") with char .split('\n') and .split(' ').
  • Removed intermediate .collect::<Vec<&str>>() calls from both splits in python.rs, preferring to chain .for_each directly on the iterator and extracting parts using .next() with pattern matching.

🎯 Why

  • Intermediate .collect::<Vec<_>>() calls force the runtime to heap-allocate temporary vectors just to hold string slices before immediately iterating over them or joining them. This wastes memory and adds latency.
  • Character-based splits ('\n') execute slightly faster than string-based splits ("\n") since the iterator only has to match a single character byte instead of searching for a full string slice match.

📊 Impact

  • Reduces memory allocations in hot code paths by directly yielding and concatenating/processing elements without temporary vectors.
  • Minimal overhead during string casing conversion and build output parsing.

🔬 Measurement

  • Verified functionality parity by running cargo test --all and make check. Existing behavior is identical, just more efficient under the hood.

PR created automatically by Jules for task 7320209209507359780 started by @cloudesize67-cmd

- Avoids intermediate Vec allocations in `xdk-lib/src/casing.rs` by using `.collect::<String>()`
- Replaces string splits with char splits and removes intermediate `Vec` allocations in `xdk-build/src/python.rs`

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