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Re: [Bug-apl] IOTA

From: Kacper Gutowski
Subject: Re: [Bug-apl] IOTA
Date: Thu, 3 Mar 2016 12:53:44 +0100

On Thu, Mar 3, 2016 at 12:40 PM, Juergen Sauermann
<address@hidden> wrote:
> the IBM APL2 language reference says (page 111):
> If R is a simple scalar, ⊂ R is R. If R is not a simple scalar, the depth of
> R is 1+ ≡R.
> And the ISO standard says the same (page 169):
> Z ← ⊂B
>  Note: If B is a simple-scalar, Z is B.

Jay is nevertheless correct, because ⊂x is NOT a simple-scalar
according to ISO.  On page 21 it has the following definitions:

> Simple: An array is simple if each item of its ravel-list is either
>   a character or a number.
> Simple-scalar: A simple array whose rank is zero.

The sole item of ⊂x is an enclosed array, not a character or number.


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