Should be }. instead of {. .
----- Original Message -----
From: Henry Rich <[EMAIL PROTECTED]>
Date: Saturday, October 13, 2007 8:26
Subject: RE: [Jgeneral] paradoxes - (2) Behead (1) arrays
To: 'General forum' <[email protected]>
> The key concept is that of 'item'. An array (no, wait, a
> non-atomic array) is a list of its items. Many of J's
> primitives treat the items as unbreakable.
>
> {. removes the first item. That leaves 0 items. The
> shape of an item remains unchanged, but there are still
> 0 of them.
>
> So 1 - 1 is indeed zero. In fact, the way J does it is
> the only way to make that true. If the shape of
> {. 1 1 $ 67
> were not 0 1, you would be taking one item from one item
> and being left with something other than 0 items.
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