}
	}
	return path.Join(elem...) + trailingSlash
}

func concatNaive(ss ...string) string {
	rs := ss[0]
	for i := 1; i < len(ss); i++ {
		rs += ss[i]
	}
	return rs
}

func benchmark(b *testing.B, data []string) {
	b.Run("concat naive", func(b *testing.B) {
		b.ResetTimer()
		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			concatNaive(data...)
		}
	})
	b.Run("concat fast", func(b *testing.B) {