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[Caml-list] "List.index" or "List.unique" functions?
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Date: 2004-05-01 (10:03)
From: Richard Jones <rich@a...>
Subject: Re: [Caml-list] "List.index" or "List.unique" functions?
On Fri, Apr 30, 2004 at 01:54:29PM -0400, Rahul Siddharthan wrote:
> I have a question: suppose I have a list l1, and I want to create a new
> list l2 with only one copy of any repeated members of the first list
> (eg, l1=[1;2;3;4;3;4;5;6;5] -> l2=[1;2;3;4;5;6])

This is actually another function which could be usefully added to
the standard library, along with:

frequency : 'a list -> (int * 'a) list     (requires input list to be sorted)

and group_by, defined by Isaac Trotts here:



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