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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-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.

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".