From: Peng Zang <peng.zang@gmail.com>
To: caml-list@yquem.inria.fr
Cc: "Ben Aurel" <ben.aurel@gmail.com>
Subject: Re: [Caml-list] newbie: how to call a function with multiple parameters?
Date: Tue, 5 Aug 2008 09:26:22 -0400 [thread overview]
Message-ID: <200808050926.25737.peng.zang@gmail.com> (raw)
In-Reply-To: <74a4f4670808041132p757cb91aofd8d0d826dd081b4@mail.gmail.com>
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You don't pass arguments like you do in C or Java. In those languages you
might do:
somefunction(arg1, arg2, arg3)
In OCaml, you do:
somefunction arg1 arg2 arg3
In OCaml, "(arg1, arg2, arg3)" means create a 3-tuple. "somefunction(arg1,
arg2, arg3)" is interpreted as make a 3-tuple and call "somefunction" on that
tuple.
You code, therefore, should look like this:
let print_logic a b =
Printf.printf "a and b is %B\n" (a && b);
Printf.printf "a or b is %B\n" (a || b);
Printf.printf "not a is %B\n" (not a)
;;
print_logic true false;;
Peng
On Monday 04 August 2008 02:32:36 pm Ben Aurel wrote:
> hi
> yeah - the question is low, but I-m struggling on different frontiers
>
> /////////////// print_logic.ml ///////////////////////////////
> ````````````````````````````````````````
> 1 let print_logic a b =
> 2 Printf.printf "a and b is %B\n" (a && b);
> 3 Printf.printf "a or b is %B\n" (a || b);
> 4 Printf.printf "not a is %B\n" (not a) (* Q1 *)
> 5
> 6 print_logic(true, false);; (* Q2 *)
>
> ```````````````````````````````````````
>
> Problem: the code doesn't compile and I don't find any help on the web.
>
> Questions:
> (* Q1 *): Somehow I don't get the concept with ";" and ";;". On line
> 4 do I need to end the statement with semicolon double-semicolon or
> nothing?
>
> (* Q2 *): How can I pass those parameters?
>
>
> Maybe there is something that's else wrong.
>
> thanks
> ben
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
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prev parent reply other threads:[~2008-08-05 13:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 18:32 Ben Aurel
2008-08-05 11:40 ` [Caml-list] " asmadeus77
2008-08-05 11:46 ` micha
2008-08-05 13:26 ` Peng Zang [this message]
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