12 lines
256 B
Haskell
12 lines
256 B
Haskell
import Debug.Trace
|
|
|
|
-- like + but each time this is evaluated print a trace
|
|
tracedPlus x y = trace ("> " ++ show x ++ " + " ++ show y) (x + y)
|
|
|
|
fib :: [Integer]
|
|
fib = 1:1:zipWith tracedPlus fib (tail fib)
|
|
|
|
main = do
|
|
print (fib !! 10)
|
|
print (fib !! 12)
|