Do you trust me to fix the index origin trouble? The entire indexing
section needs revist. Thank you. I will start recommending this page
on the forums where I sell j.
In:http://code.jsoftware.com/wiki/Articles/APL_-_a_Glimpse_of_Heaven
Indexing
Returning to our vector of numbers:Val=: 22 37 41 19 54 11 34
In order to extract the fourth item, we write4{Val
...............
Val =: (300 77 111) 3 5 1}Val
Val
*111*37*300*19*77*11 34
................
Val =: (300 77 111) 3 5 1}Val
Val
*111*37*300*19*77*11 34
It is often necessary to extract the first items from a list of values,
for example the first 5. Nothing could be easier:
1 2 3 4 5 {Val
111 37 300 19 77
On 05/26/2018 12:38 AM, [email protected] wrote:
Date: Sat, 26 May 2018 05:38:39 +0100
From: Ian Clark<[email protected]>
To:[email protected]
Subject: [Jchat] A Glimpse Of Heaven, by Bernard Legrand
Message-ID:
<CAB2g=gaqfhctkulhf7e6gb9uohpamaz_p-_pdcc0egrxwka...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Way back in 2008 Chris Burke drew attention to an article in Vector 23/1 by
Bernard Legrand, translated by Sylvia Camacho, entitled *APL – a Glimpse of
Heaven.*
This was first presented at a conference of 22 June 2006, organized by
AFAPL: *Association Francophone pour la promotion du langage APL.*
It was an unashamedly evangelistic appeal to the "diplodocus generation" of
C/C++ programmers to take APL seriously as a professional language.
In:http://code.jsoftware.com/wiki/Articles/APL_-_a_Glimpse_of_Heaven
Chris conjectured that the article would need only minor changes to offer J
in place of APL. He offered it as an "interesting exercise for the
beginner".
However the challenge was never taken up… until now.
Ladies and Gentlemen, it gives me great pleasure to present to the world:
http://code.jsoftware.com/wiki/Articles/J_--_a_Glimpse_of_Heaven
by Bernard Legrand,
translated by Sylvia Camacho and done into J by yours-truly.
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