{def nums 1 2 3 4 5}
-> nums
{S.reduce {lambda {:a :b} {+ :a :b}} {nums}}
-> 15
{S.reduce {lambda {:a :b} {- :a :b}} {nums}}
-> -13
{S.reduce {lambda {:a :b} {* :a :b}} {nums}}
-> 120
{S.reduce min {nums}}
-> 1
{S.reduce max {nums}}
-> 5