my @emptyfiles = grep { /^\d+$/ } grep { -f } glob '*';

##</code><code>##

my @emptyfiles = grep { /^\d+$/ } grep { -f } [ 1 temp.dat testdirectory 10 resume.wd ]

##</code><code>##

my @emptyfiles = grep { /^\d+$/ } [1 temp.dat 10 resume.wd ]

##</code><code>##

my @emptyfiles = [1 10]