[33007] in Perl-Users-Digest
Perl-Users Digest, Issue: 4283 Volume: 11
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Sat Sep 13 14:09:14 2014
Date: Sat, 13 Sep 2014 11:09:03 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Sat, 13 Sep 2014 Volume: 11 Number: 4283
Today's topics:
Re: Devel::Peek's character count (or bytes, maybe?) <hjp-usenet3@hjp.at>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
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Date: Sat, 13 Sep 2014 19:56:16 +0200
From: "Peter J. Holzer" <hjp-usenet3@hjp.at>
Subject: Re: Devel::Peek's character count (or bytes, maybe?)
Message-Id: <slrnm191a0.ppu.hjp-usenet3@hrunkner.hjp.at>
On 2014-09-12 19:41, G.B. <bauhaus@futureapps.invalid> wrote:
> $ perl -w -e 'use Devel::Peek; $a = "\x{20AC}"; Dump($a);'
> SV = PV(0x7fe8f2003080) at 0x7fe8f202ddd8
> REFCNT = 1
> FLAGS = (POK,pPOK,UTF8)
> PV = 0x7fe8f1c0d980 "\342\202\254"\0 [UTF8 "\x{20ac}"]
> CUR = 3
> LEN = 16
[...]
> Is CUR the number of bytes as opposed to Perl characters, currently
> present in ${a}'s PV up to \0?
Yes.
> (The docs say "characters" for CUR,
> do they mean C characters?)
Probably. Or "the docs" (you don't say which docs) haven't been updated
since 5.005.
The length in characters is cached in special magic block:
% perl -w -e 'use Devel::Peek; $a = "\x{20AC}"; $x = length($a); Dump($a);'
Name "main::x" used only once: possible typo at -e line 1.
SV = PVMG(0x8674888) at 0x86540b0
REFCNT = 1
FLAGS = (SMG,POK,IsCOW,pPOK,UTF8)
IV = 0
NV = 0
PV = 0x8659e50 "\342\202\254"\0 [UTF8 "\x{20ac}"]
CUR = 3
LEN = 10
COW_REFCNT = 1
MAGIC = 0x864f020
MG_VIRTUAL = &PL_vtbl_utf8
MG_TYPE = PERL_MAGIC_utf8(w)
MG_LEN = 1
hp
--
_ | Peter J. Holzer | Fluch der elektronischen Textverarbeitung:
|_|_) | | Man feilt solange an seinen Text um, bis
| | | hjp@hjp.at | die Satzbestandteile des Satzes nicht mehr
__/ | http://www.hjp.at/ | zusammenpaßt. -- Ralph Babel
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Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>
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End of Perl-Users Digest V11 Issue 4283
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