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SelectSaver.3perl

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.