Summary
This episode examines the performance impact of the std::regex_constants::optimize flag and common regex usage patterns. Jason conducts several benchmarks comparing regex construction and matching with and without the optimize flag, finding virtually no performance difference. The tests reveal that the greatest performance cost comes from reconstructing regex objects repeatedly, rather than from specific flag settings, highlighting the importance of careful regex object lifecycle management.
Related C++ Standard Sections
This episode covers topics found in these sections of the C++ standard:
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[re]75% match -
[re.alg]75% match -
[re.regex.construct]62% match -
[re.const.general]60% match -
[re.const]56% match