Path: news.cs.au.dk!not-for-mail
From: Ole Lehrmann Madsen <olm@daimi.cs.au.dk>
Newsgroups: comp.lang.beta
Subject: Re: Curry
Date: 20 Oct 1999 23:08:07 -0000
Organization: University of Aarhus, Department of Computer Science (DAIMI)
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> How to write the curry function in beta ?
>=20
> In haskell we write things like that:
>=20
> curry f x y =3D f(x,y)
>=20
> add(x,y) =3D x+y
> addc =3D curry add
> inc =3D addc 1
> =20
> Is this possible in haskell ??
>=20
> I write those things in beta, but my function curry
> is not generic. Moreover we can't make easyly anonymous function in BETA,=
 why=20
??
>=20
> I mean that i must write :
>=20
>=20
> curry : (# anonsub: (# .... #)
>            ...
>            exit anonsub##
>         #)
> =20
>=20
> Why can't we write
>          exit (# .... #)##
>=20
This was simply forgotten when the syntax for pattern variables was
added to the BETA grammar. There are no problems in supporting=20
such anonymous functions - we will probably do it in some future
release. It will unfortunately not be in the fortcoming r5.0.

I assume that you also saw the answer by Kasper =D8sterbye?

In=20

=09Madsen, M=F8ller-Pedersen, Nygaard:
=09OO Programming in the BETA Language,
=09Addsion Wesley/ACM Press
=09
the examples in section 12.2 may be useful.

---olm
=20
> --=20
> pad