Question About lists

[Jong Keun Na]

> long =3D sum . map (const 1)
How's this?

/JongKeun

-----Original Message-----
From: William Lee Irwin III [mailto:wli@holomorphy.com]=20
Sent: Tuesday, December 31, 2002 5:18 AM
To: Artie Gold
Cc: Cesar Augusto Acosta Minoli; haskell@haskell.org
Subject: Re: Question About lists

On Mon, Dec 30, 2002 at 01:47:37PM -0600, Artie Gold wrote:
> One suggestion, though is that you're working too hard; there's really

> no reason to define a locally defined function. The much simpler:
> long [] =3D 0
> long (x:xs) =3D 1 + long xs
> will do quite nicely.
> HTH,
> --ag

There is already a length function in List and/or the Prelude.


Bill
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