Title: RE: PerlHack - Adding new flag into a SV
From: Orton, Yves [EMAIL PROTECTED]
I thought you are just automagicaly weaken()ing the referenced
stored in the tied hash??? Something like package
Hash::NoRef; use
Scalar::Util qw(weaken); require Tie::Hash; @ISA =
On 27 Apr 2004, at 13:01, Orton, Yves wrote:
[snip]
No but I can describe one that would. Imagine a binary tree. We store
each
node using weakrefs in the structure you describe. Now I search and
find an
internal node of the tree. The root of the tree falls out of scope,
essentially stripping the
No, weakrefs cast backref magic onto their target to avoid this
problem. When the reference count drops to zero the magic ensures that
the weakref is set to undef.
See Perl_sv_rvweaken() in sv.c for more.
Sam.
Orton, Yves wrote:
From: Orton, Yves [EMAIL PROTECTED]
I thought you are just
