Perl Language Reference Manual - For Perl Version 5.12.1
Larry Wall · 2010
This manual is a printed edition of the official Perl reference documentation from the Perl 5.12.1 distribution. It describes the syntax of Perl and its built-in datatypes, operators, functions, variables, regular expressions and diagnostic messages. This manual is suitable for readers who need to be familiar with all the details of the Perl language. It is a full reference manual, not a tutorial. modules in the standard Perl library are documented separately in The Perl Library Reference Manual.