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Re: [Bug-apl] Strange bug (more info)


From: Juergen Sauermann
Subject: Re: [Bug-apl] Strange bug (more info)
Date: Wed, 01 Jun 2016 15:38:31 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

Hi Xtian,

thanks, fixed in SVN 734.

All lambdas are now "unnamed" and assigning them to a name, like in

A←{ ... }

does no longer change the name of the lambda (that was one of the earlier problems)

//// Jürgen


On 05/31/2016 12:04 AM, Christian Robert wrote:
I was pretty certain this bug will really be hard to fix.


address@hidden:/home/xtian] $ apl

                    ______ _   __ __  __    ___     ____   __
                   / ____// | / // / / /   /   |   / __ \ / /
                  / / __ /  |/ // / / /   / /| |  / /_/ // /
                 / /_/ // /|  // /_/ /   / ___ | / ____// /___
                 \____//_/ |_/ \____/   /_/  |_|/_/    /_____/

                     Welcome to GNU APL version 1.5 / 733

                Copyright (C) 2008-2015  Dr. Jürgen Sauermann
                       Banner by FIGlet: www.figlet.org

                This program comes with ABSOLUTELY NO WARRANTY;
                          for details run: apl --gpl.

     This program is free software, and you are welcome to redistribute it
         according to the GNU Public License (GPL) version 3 or later.

      )wsid test
WAS CLEAR WS
      ⎕pw←1000
      ]boxing 8
      a←20?100
      b←15?100
      cmp_a←{{⍵[⍋⍵]} (∨/[1] ⍺∘.= ⍵) / ⍵}
      cmp_b←{{⍵[⍋⍵]} (∨⌿ ⍺∘.= ⍵) / ⍵}
      )fns
cmp_a   cmp_b
      a cmp_a b
┌→──────────┐
│26 50 76 95│
└───────────┘
      b cmp_a a
┌→──────────┐
│26 50 76 95│
└───────────┘
      ⎕nl 3
┌→────┐
↓cmp_a│
│cmp_b│
└─────┘
      )save
2016-05-30  17:56:37 (GMT-4) test
      )load test
SAVED 2016-05-30 17:56:37 (GMT-4)
      )fns
cmp_a   cmp_b   λ1
      ⎕cr ¨ ⊂[2] ⎕nl 3
┌→──────────────────────────────────────────────────────────┐
│┌⊖┐ ┌→────────────────────────┐ ┌→────────────────────────┐│
│⌽ │ ↓λ←⍺ λ1 ⍵                 │ ↓λ←⍺ λ1 ⍵                 ││
│└─┘ │λ←{⍵[⍋⍵]} (∨⌿ ⍺∘.= ⍵) / ⍵│ │λ←{⍵[⍋⍵]} (∨⌿ ⍺∘.= ⍵) / ⍵││
│    └─────────────────────────┘ └─────────────────────────┘│
└∊──────────────────────────────────────────────────────────┘
      ⍝ lambda functions lost their names
      ⍝ cmp_a definition has disapear
      ⍝ a function name 'λ1' appear

      D←{24 ⎕cr ⍵}
      )fns
D   cmp_a   cmp_b   λ1
      )save


====================================================
SEGMENTATION FAULT

----------------------------------------
-- Stack trace at main.cc:63
----------------------------------------
0x7f3283b029f0
0x4493e7
========================================
====================================================

Goodbye.
address@hidden:/home/xtian] $

On 2016-05-29 14:15, Juergen Sauermann wrote:
Hi Xtian,

I believe I have corrected the fault. *SVN 732*.

Unfortunately that has required a major rework (actually a simplification) of the lambda
stuff - I hope everything else still works as expected.

It is no longer possible to ∇-edit a lambda, but *⎕CR* still works for displaying
a variable to which a lambda was assigned. The function name of the lambda
now always begins with *λ* followed by a number:

*      FOO←{⍺ + ⍵}**
**      ∇FOO[⎕]∇**
**DEFN ERROR+**
**      ∇FOO[⎕]∇**
**             ^**
**      )more**
**function is a lambda

****      ⎕CR 'FOO'**
**λ←⍺ λ1 ⍵**
**λ←⍺ + ⍵ **
*
/// Jürgen


On 05/26/2016 04:38 AM, Christian Robert wrote:
       )clear
CLEAR WS

      a←20?100
      b←15?100
      a
77 7 19 54 24 32 84 40 5 95 97 76 82 92 63 26 10 98 21 50
      b
38 80 99 90 26 30 74 50 85 81 47 76 93 95 88
      a∘.=b
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
      cmp←{(∨/[1] ⍺∘.= ⍵) / ⍵}
      a cmp b
26 50 76 95
      b cmp a
95 76 26 50
      )save
NOT SAVED: THIS WS IS CLEAR WS
      )wsid test
WAS CLEAR WS
      )save
2016-05-25  22:33:41 (GMT-4) test
      cmp←{{⍵[⍋⍵]} (∨/[1] ⍺∘.= ⍵) / ⍵}
      )save
2016-05-25  22:34:23 (GMT-4) test
      a cmp b


====================================================
SEGMENTATION FAULT

----------------------------------------
-- Stack trace at main.cc:63
----------------------------------------
0x7fc41397d9f0
0x4495e7
========================================
====================================================

Goodbye.
address@hidden:/home/xtian] $ apl

                    ______ _   __ __  __    ___     ____   __
                   / ____// | / // / / /   /   |   / __ \ / /
                  / / __ /  |/ // / / /   / /| |  / /_/ // /
                 / /_/ // /|  // /_/ /   / ___ | / ____// /___
                 \____//_/ |_/ \____/   /_/  |_|/_/    /_____/

                     Welcome to GNU APL version 1.5 / 731

                Copyright (C) 2008-2015  Dr. Jürgen Sauermann
                       Banner by FIGlet: www.figlet.org

                This program comes with ABSOLUTELY NO WARRANTY;
                          for details run: apl --gpl.

     This program is free software, and you are welcome to redistribute it
         according to the GNU Public License (GPL) version 3 or later.

SAVED 2016-05-17 21:09:56 (GMT-4)
      )load test
SAVED 2016-05-25 22:34:23 (GMT-4)
      a cmp b
26 50 76 95
      b cmp a
26 50 76 95
      )off

Goodbye.
address@hidden:/home/xtian] $






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