This Perl Tutorial shows how to use the qr operator to create compiled regular expressions.
This Perl Tutorial shows how to use the o modifier in regular expressions to compile the regex only once.
This Perl Tutorial shows how to use the x modifier in regular expressions to allow whitespace and comments to make regex's easier to read ...more
This Perl Tutorial demonstrates the use of the ee modifier in regular expressions.
This Perl Tutorial demonstrates how to use function calls and expressions inside regular expressions (Regex) with the e modifier.
The Perl Tutorial demonstrates the use of regular expressions pos function and the \G assertion.
This Perl Tutorial demonstrates the use of regular expressions lookahead and lookbehind assertions.
This Perl Tutorial demonstrates the use of regular expressions (regex) backreferences to refer to previous successful matches.
This Perl Tutorial demonstrates the use of regular expressions assertions.
This Perl Tutorial demonstrates regular expressions quantifiers.
This Perl Tutorial demonstrates some regular expressions such as matching the beginning and end of a line, match a digit, match a word ...more
This Perl Tutorial explains the default variable, which is the most used predefined variable in Perl and how to work with it when scripting.
This Perl Tutorial demonstrates how to use the output record separator predefined variable to separate records easily.
This Perl Tutorial makes use of the current input line number predefined variable to count or fetch a number of records from a file.
This Perl Tutorial uses the predefined variables output field separators for the print operator and array values.
This Perl Tutorial uses predefined variables in pattern matching to find a match, pre-match and post-match in a string.
This Perl Tutorial demonstrates how to use the crypt function to encrypt a string.
This Perl Tutorial shows how to create a text file database.
This Perl Tutorial shows how to sort databases.
This Perl Tutorial shows how to write and read a database file.
