Am I the only one shocked to learn that to find something at the end of a string it starts at the beginning? Perhaps it's because of the simplicity of the example but I expected it to start at the end.
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Regular expressions are great and can always be matched in linear time with respect to the input string length.
The problem is that JS standard library RegExps aren't actually regular expressions, but rather a much broader language, which is impossible to implement efficiently. If RegExp switched to proper regular expressions, they would match much faster but supporting backreferences like /(.*)x\1/ would be impossible.
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The visualization was great! The double loops jump out immediately and make it easy to recognize problematic expressions.
Although I haven't fully read this article
feel free to crosspost in:
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This is why we need regex licenses https://regexlicensing.org/
/s
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guide to the dangers of Javascript, no?
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Is there one thing not screwed up in this language? I mean it's regex, there are so many good implementations for it.
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