-- -*- M2-comint -*- {* hash: -123515275 *}

i1 : fib = n -> if n <= 1 then 1 else fib(n-1) + fib(n-2)

o1 = fib

o1 : FunctionClosure

i2 : time fib 16
     -- used 0.001999 seconds

o2 = 1597

i3 : fib = memoize fib
--warning: function fib redefined

o3 = fib

o3 : FunctionClosure

i4 : time fib 16
     -- used 0. seconds

o4 = 1597

i5 : time fib 16
     -- used 0. seconds

o5 = 1597

i6 :