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Diffstat (limited to 'ch02/2_b_3.txt')
| -rw-r--r-- | ch02/2_b_3.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/ch02/2_b_3.txt b/ch02/2_b_3.txt new file mode 100644 index 0000000..2b818de --- /dev/null +++ b/ch02/2_b_3.txt @@ -0,0 +1,14 @@ +-- Load your lastButOne function into ghci, and try it out on lists of different +-- lengths. What happens when you pass it a list that's too short? + +ghci> :l 2_b_2.hs +[1 of 1] Compiling Main ( 2_b_2.hs, interpreted ) +Ok, one module loaded. +ghci> lastButOne [1, 2, 3, 4] +3 +ghci> lastButOne [1, 2, 3] +2 +ghci> lastButOne [1, 2] +1 +ghci> lastButOne [1] +*** Exception: Prelude.tail: empty list |