VERSION will return the value of the variable $VERSION in the
package the object is blessed into. If REQUIRE is given then
it will do a comparison and die if the package version is not
greater than or equal to REQUIRE.
VERSION can be called as either a static or object method call.
The isa and can methods can also be called as subroutines
UNIVERSAL::isa ( VAL, TYPE )
isa returns true if one of the following statements is true.
VAL is a reference blessed into either package TYPE or a package
which inherits from package TYPE.
VAL is a reference to a TYPE of Perl variable (e.g. 'HASH').
VAL is the name of a package that inherits from (or is itself)
package TYPE.
UNIVERSAL::can ( VAL, METHOD )
If VAL is a blessed reference which has a method called METHOD,
can returns a reference to the subroutine. If VAL is not
a blessed reference, or if it does not have a method METHOD,
undef is returned.
These subroutines should not be imported via use UNIVERSAL qw(...).
If you want simple local access to them you can do
*isa = \&UNIVERSAL::isa;
to import isa into your package.
UNIVERSAL - base class for ALL classes
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Last Modified : Sun Sep 7 18:20:27 2008
