NAME
PerlIO::scalar - in-memory IO, scalar IO
SYNOPSIS
my
$scalar
=
''
;
...
open
my
$fh
,
"<"
, \
$scalar
or
die
;
open
my
$fh
,
">"
, \
$scalar
or
die
;
open
my
$fh
,
">>"
, \
$scalar
or
die
;
or
my
$scalar
=
''
;
...
open
my
$fh
,
"<:scalar"
, \
$scalar
or
die
;
open
my
$fh
,
">:scalar"
, \
$scalar
or
die
;
open
my
$fh
,
">>:scalar"
, \
$scalar
or
die
;
DESCRIPTION
A filehandle is opened but the file operations are performed "in-memory" on a scalar variable. All the normal file operations can be performed on the handle. The scalar is considered a stream of bytes. Currently fileno($fh) returns -1.
Attempting to open a read-only scalar for writing will fail, and if warnings are enabled, produce a warning.
IMPLEMENTATION NOTE
PerlIO::scalar
only exists as a stub. One does not need to explicitly use PerlIO::scalar
.