Case sensitivity 区分大小写 Case insensitive: Differences between uppercase and lowercase characters are ignored. cat matches CAT, Cat, or cAt or any other capitalization in addition to cat. 不区分大小写:忽略大小写字符之间的差异。cat匹配CAT, Cat,cAt或cat的其他任何大写字母. Case sensitive: Differen...
0: Case sensitive 1: Case insensitive Notes: When writing regex patterns, symbols called ‘tokens’ can be used that match with a variety of characters. These are some simple tokens for reference: “[0-9]”: any numerical digit “[a-z]”: a character in the range of a to z “....
a-zmatches a single character in the range betweena(index 97)andz(index 122)(case insensitive) \s matches any whitespace character (equivalent to[\r\n\t\f\v]) *matches the previous token betweenzeroandunlimitedtimes, as many times as possible, giving back as needed(greedy) ...
[Character set.Match any character in the set. A-ZRange.Matches a character in the range "A" to "Z" (char code 65 to 90). Case sensitive. ] ) \wWord.Matches any word character (alphanumeric & underscore). +Quantifier.Match 1 or more of the preceding token....
有以下几个测试 Case: 正则表达式/.qt/g只可以匹配到bqt 正则表达式/.qt/gs或/(?s).qt/g可以匹配到bqt和\nqt(\n表示一个换行符) 正则表达式/.*qt/g可以匹配到bqt和qt(前面没有换行符) 正则表达式/.*qt/gs或/(?s).*qt/g可以匹配到整个结果(默认启用贪婪匹配导致的) ...
{601,} matches the previous token between 601 and unlimited times, as many times as possible, giving back as needed (greedy) " matches the character " with index 3410 (2216 or 428) literally (case sensitive) Global pattern flags g modifier: global. All matches (don't return after first...
For case sensitive regular expression queries, if an index exists for the field, then MongoDB matches the regular expression against the values in the index, which can be faster than a collection scan. Further optimization can occur if the regular expression is a “prefix expression”, which me...
0:Case sensitive 1:Case insensitive Notes:When writing regex patterns, symbols called ‘tokens’ can be used that match with a variety of characters. These are some simple tokens for reference: “[0-9]”: any numerical digit “[a-z]”: a character in the range of a to z ...
Scenario: You would like to use a route step to to route files based on filename, but would like to ignore case sensitive. Solution: Use regular exp
Regular expressions are normally case-sensitive so the regular expression The would not match the string the."The" => The fat cat sat on the mat. Test the regular expression2. Meta CharactersMeta characters are the building blocks of regular expressions. Meta characters do not stand for ...