Hm. There are still plenty of places where references to typeglobs are relevant in Perl5:

  1. File handles: Even lexical file handles are references to an underlying typeglob:
    open my $fh, '>', 'fred.junk'; 

Dump( $fh );;
SV = RV(0x3c728b0) at 0x3c728a0
  REFCNT = 1
  FLAGS = (PADMY,ROK)
  RV = 0x3c72950
  SV = PVGV(0x3c82d38) at 0x3c72950
    REFCNT = 1
    FLAGS = ()
    NAME = "$fh"
    NAMELEN = 3
    GvSTASH = 0x36bde0  "main"
    GP = 0x3c93298
      SV = 0x0
      REFCNT = 1
      IO = 0x3c72168
      FORM = 0x0
      AV = 0x0
      HV = 0x0
      CV = 0x0
      CVGEN = 0x0
      LINE = 1
      FILE = "(eval 18)"
      FLAGS = 0x0
      EGV = 0x3c72950   "$fh"

    [download]
  2. Directory handles: Even lexical ones:
    opendir my $dir, '.'; 

Dump( $dir );;
SV = RV(0x2762e8) at 0x2762d8
  REFCNT = 1
  FLAGS = (PADMY,ROK)
  RV = 0x3c721e0
  SV = PVGV(0x3c82d38) at 0x3c721e0
    REFCNT = 1
    FLAGS = ()
    NAME = "$dir"
    NAMELEN = 4
    GvSTASH = 0x36bde0  "main"
    GP = 0x3c93298
      SV = 0x0
      REFCNT = 1
      IO = 0x3c72198
      FORM = 0x0
      AV = 0x0
      HV = 0x0
      CV = 0x0
      CVGEN = 0x0
      LINE = 1
      FILE = "(eval 22)"
      FLAGS = 0x0
      EGV = 0x3c721e0   "$dir"

    [download]
  3. Coderefs: Every time you call, or cause to be called, a subroutine indirectly:
    sub cmp { $_[0] <=> $_[1] };;

Dump( \&cmp );;
SV = RV(0x2762e8) at 0x2762d8
  REFCNT = 1
  FLAGS = (TEMP,ROK)
  RV = 0x3c72858
  SV = PVCV(0x3c5a028) at 0x3c72858
    REFCNT = 2
    FLAGS = ()
    COMP_STASH = 0x36bde0       "main"
    START = 0x3d0ef48 ===> 0
    ROOT = 0x3d0eed0
    GVGV::GV = 0x3c721f8        "main" :: "cmp"
    FILE = "(eval 9)"
    DEPTH = 0
    FLAGS = 0x0
    OUTSIDE_SEQ = 1935
    PADLIST = 0x3c72840
    PADNAME = 0x3c72828(0x3cf7358) PAD = 0x3c72210(0x3cf7618)
    OUTSIDE = 0x36beb8 (UNIQUE)

    [download]

Being dismissive of these more obscure but still totally current and relevant areas of Perl because you rarely interact with them directly or don't understand them is of no help to anyone.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^2: Dereferencing a reference to a typeglob? by BrowserUk
in thread Dereferencing a reference to a typeglob? by Anonymous Monk

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