With XS code you can even got to TripleVar SV's :)

$ perl -wl \
? -e 'use charnames ":full";' \
? -e 'use Data::Peek qw(triplevar DDump);' \
? -e 'my $tv = triplevar ("\N{GREEK SMALL LETTER PI}", 3, 3.1415);' \
? -e 'DDump $tv'
SV = PVNV(0x1217860) at 0x76a528
  REFCNT = 1
  FLAGS = (PADMY,IOK,NOK,POK,pIOK,pNOK,pPOK,UTF8)
  IV = 3
  NV = 3.1415
  PV = 0x7773e0 "\317\200"\0 [UTF8 "\x{3c0}"]
  CUR = 2
  LEN = 8

[download]

or in one line

perl -MData::Peek=triplevar,DDump -wle'DDump (triplevar ("\x{3c0}", 3,
+ 3.1415))'
SV = PVNV(0x11d8f20) at 0x74b0e0
  REFCNT = 1
  FLAGS = (IOK,NOK,POK,pIOK,pNOK,pPOK,UTF8)
  IV = 3
  NV = 3.1415
  PV = 0x75b470 "\317\200"\0 [UTF8 "\x{3c0}"]
  CUR = 2
  LEN = 8

[download]

You could go even further by adding magic and controling the magic by a combination of the IV, NV, and PV parts. That however is sick :)


Enjoy, Have FUN! H.Merijn

In reply to Re: Question on SV internals by Tux
in thread Question on SV internals by John M. Dlugosz

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