Re: [Bug-apl] Question about behavior of ⍋

On 9 July 2014 10:52, Blake McBride <address@hidden> wrote:

No, same results as IBM APL 2.

On Tue, Jul 8, 2014 at 9:42 PM, Elias Mårtenson <address@hidden> wrote:

So NARS is giving the same results as GNU APL then?

On 8 July 2014 22:50, Blake McBride <address@hidden> wrote:

Interestingly, in NARS200 I get all of the same results as in IBM APL 2 except the following:

⍋⊃z
1 3 2 4

On Tue, Jul 8, 2014 at 9:41 AM, Blake McBride <address@hidden> wrote:

For what it is worth, IBM APL 2 gives:

⍋'AAA' 'Y' 'BBB' 'CC'
DOMAIN ERROR

⍋'AAA' 'Y' 'BBB' 'CC'
∧

Z←'AA' 'XX' 'AAA' 'XXX'
⎕UCS¨Z
65 65 88 88 65 65 65 88 88 88

⍋⎕UCS¨Z
DOMAIN ERROR
⍋⎕UCS¨Z

∧

⊃Z

AA
XX
AAA
XXXX

⍋⊃Z
DOMAIN ERROR
⍋⊃Z
∧

I have no real preference regarding this. I am just providing this for informational purposes. Please feel free with other tests you would like me to perform.

Thanks.

Blake

On Tue, Jul 8, 2014 at 5:45 AM, Juergen Sauermann <address@hidden> wrote:

Hi Elias,

nice trick!

/// Jürgen

On 07/08/2014 08:58 AM, Elias Mårtenson wrote:

By the way, I found a workaround to the string ordering. The workaround requires memory on the order of ↑(⍴V)×⌈/⍴¨V for a vector V. This should be enough justification for the proposed extension.

Here's what I do: instead of doing the following:

z[⍋z←'foo' 'bar' 'test' 'aaaaaa']

┌→──────────────────────────┐

│┌→──┐ ┌→──┐ ┌→───┐ ┌→─────┐│

││bar│ │foo│ │test│ │aaaaaa││

│└───┘ └───┘ └────┘ └──────┘│

└∊──────────────────────────┘

I do this:

z[⍋⊃z←'foo' 'bar' 'test' 'aaaaaa']

┌→──────────────────────────┐

│┌→─────┐ ┌→──┐ ┌→──┐ ┌→───┐│

││aaaaaa│ │bar│ │foo│ │test││

│└──────┘ └───┘ └───┘ └────┘│

└∊──────────────────────────┘

Regards,

Elias

From:	Elias Mårtenson
Subject:	Re: [Bug-apl] Question about behavior of ⍋
Date:	Wed, 9 Jul 2014 10:59:50 +0800