This commit is contained in:
Ilya Kantor 2019-09-06 01:15:24 +03:00
parent 20547570ff
commit 681cae4b6a
16 changed files with 505 additions and 362 deletions

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@ -65,7 +65,7 @@ That regexp is not perfect, but mostly works and helps to fix accidental mistype
## Parentheses contents in the match
Parentheses are numbered from left to right. The search engine remembers the content matched by each of them and allows to get it in the result.
Parentheses are numbered from left to right. The search engine memorizes the content matched by each of them and allows to get it in the result.
The method `str.match(regexp)`, if `regexp` has no flag `g`, looks for the first match and returns it as an array:
@ -347,4 +347,4 @@ If the parentheses have no name, then their contents is available in the match a
We can also use parentheses contents in the replacement string in `str.replace`: by the number `$n` or the name `$<name>`.
A group may be excluded from remembering by adding `pattern:?:` in its start. That's used when we need to apply a quantifier to the whole group, but don't remember it as a separate item in the results array. We also can't reference such parentheses in the replacement string.
A group may be excluded from numbering by adding `pattern:?:` in its start. That's used when we need to apply a quantifier to the whole group, but don't want it as a separate item in the results array. We also can't reference such parentheses in the replacement string.