can

$

sub

 = $

obj


->can(


method


)

Checks if object $obj has a method method . If so, returns a reference to the subroutine, otherwise returns undef . Can be called as either a static or object method call, or as a subroutine:

$ref = UNIVERSAL::can(
val
, 
method
)

Returns a reference to the subroutine if val is a blessed reference with a method method , and undef if val is not blessed or does not have method .