codechenx / FastTableViewer / 19460100670

Pull #23

github

Optimize string operations and filter performance

- Replace manual toLower/stringContains with optimized stdlib functions
- Consolidate duplicate date format lists into shared constant
- Pre-compile regex patterns in filterByColumn to avoid repeated compilation
- Pre-parse numeric thresholds and case conversions for filter operations
- Add evaluateFilterOptimized for better performance in hot paths

Co-authored-by: codechenx <38947240+codechenx@users.noreply.github.com>

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