What Are Regexes?
| Regular Expressions are a set of special set search strings, which can contain powerful metacharacters to pattern match against a set of strings. |
Many tasks can be done with regular expressions.
You can:
- find out whether a given string matches a particular pattern.
- find out where the matching substring is located within the string.
- use a substitution command to replace matching sections with another string
- use the split() operator to return an array of all substrings your pattern did not match.