SelectSaver(3p) Perl Programmers Reference Guide SelectSaver(3p) #
SelectSaver(3p) Perl Programmers Reference Guide SelectSaver(3p)
NNAAMMEE #
SelectSaver - save and restore selected file handle
SSYYNNOOPPSSIISS #
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
DDEESSCCRRIIPPTTIIOONN #
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.
perl v5.36.3 2009-10-12 SelectSaver(3p)