为了匹配所有的东西直到某个字符X，最简单的应该是;
为了匹配所有的东西直到某个字符X，最简单的应该是;
[[:alpha:]] ASCII character class ([A-Za-z]). [[:^alpha:]] Negated ASCII character class ([^A-Za-z]). [x[^xyz]] Nested/grouping character class (matching any character except y and z). [a-y&&xyz] Intersection (matching x or y). [0-9&&[^4]] Subtraction using intersection...
3. Shorthand Character Sets There are a number of convenient shorthands for commonly used character sets/ regular expressions: ShorthandDescription . Any character except new line \w Matches alphanumeric characters: [a-zA-Z0-9_] \W Matches non-alphanumeric characters: [^\w] \d Matches digits:...
Regex.dot metacharacter Inside the regular expression, a dot operators represents any character except the newline character, which is\n. Any character means letters uppercase or lowercase, digits 0 through 9, and symbols such as the dollar ($) sign or the pound (#) symbol, punctuation mark...
A character except: a, b or c [^abc] A character in the range: a-z [a-z] A character not in the range: a-z [^a-z] A character in the range: a-z or A-Z [a-zA-Z] Any single character . Alternate - match either a or b ...
In regex, we can match any character using period "." character. To match only a given set of characters, we should use character classes.
2.2.1 Negated Character SetsIn general, the caret symbol represents the start of the string, but when it is typed after the opening square bracket it negates the character set. For example, the regular expression [^c]ar means: any character except c, followed by the character a, followed...
matches any character (except for line terminators) *?matches the previous token betweenzeroandunlimitedtimes, as few times as possible, expanding as needed(lazy) "matches the character"with index3410(2216or428) literally (case sensitive)
[^abc]</th<>td headers="matches classes negation">Any character except a, b, , or c (negation)<><[a-zA-Z]/th>a through z or A through Z, inclusive (range)<>[a-d[m-p]]a through d, or m through p: [a-dm-p] (union)<><[...