UNIVERSAL

Base class; all blessed references inherit from it:

$sub = $obj->can('print');

$yes = UNIVERSAL::isa($ref, "HASH");

Provides the following methods.

Get Perl in a Nutshell, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial