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SelectSaver - save and restore selected file handle
use SelectSaver; { my $saver = new SelectSaver(FILEHANDLE); # FILEHANDLE is selected } # previous handle is selected { my $saver = new SelectSaver; # new handle may be selected, or not } # previous handle is selected
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.