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Postings from February 2022
On Mon, Feb 28, 2022 at 02:15:42AM -0800, Darren Duncan wrote:
> On 2022-02-28 1:41 a.m., Dan Book wrote:
>
> Likewise, "0+$w" produces a number so its result is "originally" a
> number, so do that, or some other explicit cast operator like "int $w"
> etc, with values pulled from JSON to make them canonically numbers. --
> Darren Duncan
I think it all depends if a new SV was created. We've seen that some
string operations operate on the original string. I doubt this is the
case with assignment or numbers, so I expect the result of 0+ is indeed
a new original SV.
Actually, let me follow Yves' suggestion and test my assumptions:
$ perl -MDevel::Peek -e '$a="1";Dump($a); $b=0+$a; Dump($b)'
SV = PV(0x564576205ec0) at 0x564576230d80
REFCNT = 1
FLAGS = (POK,IsCOW,pPOK)
PV = 0x564576231b90 "1"\0
CUR = 1
LEN = 10
COW_REFCNT = 1
SV = IV(0x564576230e18) at 0x564576230e28
REFCNT = 1
FLAGS = (IOK,pIOK)
IV = 1
--
Philippe Bruhat (BooK)
"Did I err?" (Groo, in too many issues to count - ...and *YES* he did!)
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