12 июл. 2011 г. · \b is a zero-width word boundary. Specifically: Matches at the position between a word character (anything matched by \w) and a non-word character.

30 сент. 2011 г. · \b is a zero width assertion. That means it does not match a character, it matches a position with one thing on the left side and another thing on the right ...

19 сент. 2014 г. · You should escape \ to represent \ literally. Otherwise \b means a backspace characters.

28 окт. 2016 г. · \b doesn't match a character, it matches a spot between characters, a boundary. It's impossible for there to be a word boundary there when the two characters ...

27 дек. 2010 г. · A word boundary ( \b ) is a zero width match that can match: Between a word character ( \w ) and a non-word character ( \W ) or ...

8 апр. 2021 г. · The problem you have here is that \b matches at any word separator, and $foo isn't considered a single word -- it has a word boundary between the $ and the foo.

22 апр. 2020 г. · The difference betweeen b and B is that b marks word boundaries whereas B is its negation. That is, \\bcat\\b matches only if cat is separated by white space.

24 нояб. 2019 г. · \b is a newer construct from Perl et al., and is direction neutral, ie it is true at a word boundary either on the left or on the right of a sequence of word ...

15 мая 2016 г. · I want a regular expression to match a substring of the big file that begins with abc, contains 123 somewhere in the middle, ends with xyz, and there are no ...

27 сент. 2017 г. · \B is a zero-width non-word boundary. Specifically: Matches at the position between two word characters (ie the position between \w\w ) as well as at the ...