You should declare the version of your code. 'use v6;' for Perl 6 code (more specific versions will come up soon), and "use 5.014" for Perl 5.14, for example.

You should declare the version of your code. 'use v6;' for Perl 6 code (more specific versions will come up soon), and "use 5.014" for Perl 5.14, for example. This will give good error messages when trying to run your code with the wrong compiler.