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SelectSaver(3perl) | Perl Programmers Reference Guide | SelectSaver(3perl) |
NAME¶
SelectSaver - save and restore selected file handleSYNOPSIS¶
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.
2018-11-29 | perl v5.24.1 |