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What does this comment mean? Since not particularly well-versed in programming, all I understood was that this project has something that can read data? What is impressive about a tool that can read C++?

Would appreciate if someone can explain, thanks!

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C++ is a notoriously difficult language to parse [1], so hand-rolling a parser (even for a subset of the language) is an impressive feat. It's also interesting that they decided to implement their own tokenizer and lexer instead of using something "off the shelf".

[1] - https://en.wikipedia.org/wiki/Most_vexing_parse

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