oracular (3) PerlIO::scalar.3perl.gz

Provided by: perl-doc_5.38.2-5_all bug

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 to use XSLoader to load C code that provides support for treating a scalar
       as an "in memory" file.  One does not need to explicitly "use PerlIO::scalar".