SelectSaver

NAME

SelectSaver - save and restore selected file handle

SYNOPSIS

use SelectSaver;

{
   my $saver = SelectSaver->new(FILEHANDLE);
   # FILEHANDLE is selected
}
# previous handle is selected

{
   my $saver = SelectSaver->new;
   # new handle may be selected, or not
}
# previous handle is selected

DESCRIPTION

A SelectSaver object contains a reference to the file handle that was selected when it was created. If its new method gets an extra parameter, then that parameter is selected; otherwise, the selected file handle remains unchanged.

When a SelectSaver is destroyed, it re-selects the file handle that was selected when it was created.

© 1993–2016 Larry Wall and others
Licensed under the GNU General Public License version 1 or later, or the Artistic License.
The Perl logo is a trademark of the Perl Foundation.
https://perldoc.perl.org/5.22.0/SelectSaver.html