|
Ok!
|
|
|
Ok!
|
---|---|---|---|---|
4 | Character Meaning Example . Matches any single character – c.t will match cat, cot, cut, etc. + Repeats the previous match one or more times – a+ matches a, aa, aaa, etc * Repeats the previous match zero or more times. – a* matches all the same things a+ matches, but will also match an empty string. ? Makes the match optional. colou?r will match color and colour. ^ Called an anchor, matches the beginning of the string ^a matches a string that begins with a $ The other anchor, this matches the end of the string. a$ matches a string that ends with a. ( ) Groups several characters into a single unit, and captures a match for use in a backreference. (ab)+ matches ababab - that is, the + applies to the group. For more on backreferences see below. [ ] A character class - matches one of the characters c[uoa]t matches cut, cot or cat. [^ ] Negative character class - matches any character not specified c[^/]t matches cat or c=t but not c/t | регулярные выражения, regexp | 10 | Значения символов регулярного выражения |