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Monday, September 19 • 11:00am - 12:00pm
Regular Expressions in C++, Present and Future

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Regular expressions are widely used in application development and data processing, yet it is challenging to design and implement a regular expression library that is expressive, efficient and safe.

In this talk, Tim Shen, the current maintainer of libstdc++'s <regex>, will introduce the basics of implementing regular expressions in C++, the status of existing implementations, and what is expected from the standardization process.

For the implementation, several data structures and algorithms will be introduced, with pros and cons listed; we will show how several popular implementations (Boost.Regex, Boost.Xpressive, <regex> from standard library implementations, RE2, etc) pick their algorithms. Several popular features/patterns that hurt performance will be explained, with a "safe" regex usage suggested. Finally a wishlist of features will be presented, in order to deliver a more efficient and usable regex library.

Speakers
avatar for Tim Shen

Tim Shen

Software Engineer, Google
Tim Shen is a compiler engineer in Google LLVM team. His major focus is the performance of C++ on various LLVM backends. He also maintains libstdc++'s <regex>.


Monday September 19, 2016 11:00am - 12:00pm
White (Room 407) Meydenbauer Center