Detailed guide on Regex
github.com
Detailed guide on Regex
1–6 of 6 posts
Re: Detailed guide on Regex
#2"Just like above example the regular expression ar[.] means: an lowercase character a, followed by letter r, followed by any character."
A period inside a character class is just a period. So that's only going to match "ar."
Re: Detailed guide on Regex
#3Haven't read the guide, but off the bat it would benefit by at least mentioning the potential for regex with poor performance characteristics or even catastrophic backtracking, and give a few tips on how to avoid them. Neither performance nor backtracking appear in the text anywhere, nor do possessive or atomic.
Re: Detailed guide on Regex
#4Haven't read the guide, but off the bat it would benefit by at least mentioning the potential for regex with poor performance characteristics or even catastrophic backtracking, and give a few tips on how to avoid them. Neither performance nor backtracking appear in the text anywhere, nor do possessive or atomic.
Word boundaries aren't mentioned either. I use \b quite a bit, was surprised to see it skipped.
Re: Detailed guide on Regex
#5There are many incompatible regexp dialects. This describes one of the dialects, but it doesn't even say which one.
It is full of errors and omissions. It's certainly not "detailed".
I don't recommend this as a learning source. Sorry.
Re: Detailed guide on Regex
#6"Just like above example the regular expression ar[.] means: an lowercase character a, followed by letter r, followed by any character." A period inside a character class is just a period. So that's only going to match "ar."
the example is even worse: the string should match three times, not two. (it misses the a, followed by r, followed by space)