PerlIO::scalar man page on CentOS

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PerlIO::scalar(3pm)    Perl Programmers Reference Guide	   PerlIO::scalar(3pm)

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-mem‐
       ory" on a scalar variable.  All the normal file operations can be per‐
       formed on the handle. The scalar is considered a stream of bytes.  Cur‐
       rently fileno($fh) returns "undef".

IMPLEMENTATION NOTE
       "PerlIO::scalar" only exists to use XSLoader to load C code that pro‐
       vides support for treating a scalar as an "in memory" file.  One does
       not need to explicitly "use PerlIO::scalar".

perl v5.8.8			  2001-09-21		   PerlIO::scalar(3pm)
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