public void FindIndices () { Assert.AreEqual ("3,6", new[]{1,3,5,6,7,9,10}.FindIndices (v => (v % 2) == 0).Implode (",")); Assert.AreEqual ("", new[]{1,3,5,7,9}.FindIndices (v => (v % 2) == 0).Implode (",")); }