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[Caml-list] Please help a newbie
- Johann Spies
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| Date: | -- (:) |
| From: | Johann Spies <jspies@m...> |
| Subject: | [Caml-list] Please help a newbie |
I have read a lot of tutorials and examples and am now trying to write
something myself. My problem will show that I do not understand a
basic thing in functional programming. I will appreciate some help on
this.
The following illustrates my problem:
------------------
$ ocaml
Objective Caml version 3.01
# let lys = ['a';'b';'c'];;
val lys : char list = ['a'; 'b'; 'c']
# let wys_dit woord = print_string woord;;
val wys_dit : string -> unit = <fun>
# let rec wys_die_lys l = function
[] -> []
| h :: t -> wys_dit h :: wys_die_lys l t;;
val wys_die_lys : 'a -> string list -> unit list = <fun>
# wys_die_lys lys;;
- : string list -> unit list = <fun>
# wys_die_lys ['x','y','z'];;
- : string list -> unit list = <fun>
------------------------------------------------
Now my question: I expected
wys_die_lys lys to print out a b c
and
wys_die_lys ['x','y','z'] to print x y z
Why did this not happen?
Johann
--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"All scripture is given by inspiration of God, and is
profitable for doctrine, for reproof, for correction,
for instruction in righteousness;"
II Timothy 3:16
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