fast_blank
A C-optimized Ruby gem providing a faster implementation of Active Support's String#blank? method.
What is fast_blank?
fast_blank is a Ruby C extension that provides a highly optimized implementation of the `String#blank?` method, which checks if a string is empty or contains only whitespace. It solves the performance bottleneck of repeatedly checking string emptiness in Ruby applications by offering significantly faster execution times compared to Active Support's standard implementation.
Ruby developers working on performance-sensitive applications, particularly those using Active Support's `String#blank?` method extensively in loops, validations, or data processing pipelines.
Developers choose fast_blank for its substantial performance gains—up to 20x faster in some cases—and its zero-allocation design that reduces garbage collection pressure, making it an ideal drop-in replacement for Active Support's method without changing application code.
Overview
fast_blank is a Ruby C extension that delivers a high-performance alternative to Active Support's String#blank? method. It offers significant speed improvements while maintaining compatibility with Ruby's standard behavior for determining if a string is empty or contains only whitespace.
Key Features
- Performance Optimized — Provides 1.2–20x faster execution compared to Active Support's implementation, depending on string length.
- Zero String Allocation — Operates without allocating additional strings, reducing garbage collection overhead.
- Full Compatibility — Includes
blank_as?method for 100% compatibility with Active Support's Unicode-awareblank?behavior. - MRI & Rubinius Support — Compatible with MRI Ruby 1.9.3 through 2.2 and Rubinius 2.x.
Philosophy
fast_blank prioritizes raw performance and minimal memory overhead while maintaining behavioral parity with Ruby's native string handling, making it an ideal drop-in replacement for performance-critical applications.
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