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回复 1# chenxianzai
$ perldoc -f bless
bless REF,CLASSNAME
bless REF
This function tells the thingy referenced by REF that it is now
an object in the CLASSNAME package. If CLASSNAME is omitted, the
current package is used. Because a "bless" is often the last
thing in a constructor, it returns the reference for
convenience. Always use the two-argument version if a derived
class might inherit the function doing the blessing. See perlobj
for more about the blessing (and blessings) of objects.
Consider always blessing objects in CLASSNAMEs that are mixed
case. Namespaces with all lowercase names are considered
reserved for Perl pragmata. Builtin types have all uppercase
names. To prevent confusion, you may wish to avoid such package
names as well. Make sure that CLASSNAME is a true value.
See "Perl Modules" in perlmod.
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