libdevel-refcount-perl - 0.10-3+b1 main

Devel::Refcount provides a single function which obtains the reference count
of the object being pointed to by the passed reference value.
.
Internally, Perl maintains a count of the number of 'things' referring to each
variable, as a means of providing automatic memory management. Every time a
reference is made to a scalar value, for example, the reference count is
incremented; every time that reference is lost (eg. when a lexical variable
goes out of scope) then the reference count is decremented.