Re: [Caml-list] Construct a list of records from several lists

[John Whitington <john@coherentgraphics.co.uk>]

Hi Casey,

Casey Basichis wrote:
> Hi,
>
> I'm new to Ocaml.

There is also this list, for beginners specifically:

http://groups.yahoo.com/neo/groups/ocaml_beginners/info

> I have five lists of ints, how can I can I combine them into a list of
> records where the fields are filled with values from each of the lists?

Do you mean that the lists are fixed-length, that you have a record type 
something like

type t = {a : int; b : int; c : int; d : int}

and you want to convert each list, which is something like

[1; 2; 3; 4]

into a record something like

{a = 1; b = 2; c = 3; d = 4}

?


In which case, you want to use pattern matching to write a function of type

int list -> t

which converts a (fixed-length) list to a thing of type t and then you 
can use List.map to deal with all your lists, producing a t list from an 
int list list.

If you meant something different entirely, please clarify!

With Thanks,

-- 
John Whitington
Director, Coherent Graphics Ltd
http://www.coherentpdf.com/