| Short for regular
expression, a regex is a string of text that enables a user to
quickly create pattern matching and quickly and easily locate and
manage text. Perl is a great example of
a programming language that utilizes regular expressions. Below are
a few examples of regular expressions and pattern matching in Perl.
$data =~ s/bad data/good data/i;
The above example replaces any "bad data" with
"good data" using an insensitive case
match.
$data =~ s/a/A/i;
The above example replaces any lowercase "a" with an
uppercase "A".
$data =~ s/[a-z]/*/;
The above replaces any lowercase letter, a through z, with an asterisk.
Users who are interested in regular expressions in software
programs, such as grep, or in their
programming language of choice, should definitely check out the O'Reilly
book "Mastering Regular Expressions".
Also see: Escape sequence,
Expression, Meta-character,
Programming
definitions
|
|
| Resolved |
Were you able to locate the answer to your questions? |
|
|
