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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
BEGIN {
if (!eval { require 5.016; 1 }) {
plan skip_all => "This test requires 5.16";
}
}
use 5.016;
use Fun;
fun fact ($n) {
if ($n < 2) {
return 1;
}
return $n * __SUB__->($n - 1);
}
is(fact(5), 120);
is(fun ($n = 8) { $n < 2 ? 1 : $n * __SUB__->($n - 1) }->(), 40320);
done_testing;
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